Journal articles: 'Mouse population ecology'

1

Tokushima, Hideyuki, and Peter J. Jarman. "Ecology of the rare but irruptive Pilliga mouse, Pseudomys pilligaensis. III. Dietary ecology." Australian Journal of Zoology 58, no. 2 (2010): 85. http://dx.doi.org/10.1071/zo09107.

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The diet of the Pilliga mouse, Pseudomys pilligaensis, was analysed from 430 faecal samples collected from ~340 individuals across different seasons over a period of five years that included a wild fire and subsequent irruption and sharp decline of the population. The primary food items in all seasons were seeds and fruits from diverse plant species, but the mice also consumed a wide range of other foods, including leaves, invertebrates, fungi and mosses. Invertebrates, the second most abundant type of food item, were eaten in all seasons but, with fungi, increased in winter and spring when consumption of seeds and fruits declined. Mice consumed significantly more fungi and mosses before the wild fire than after it. Diets differed between sites rather little in the proportions of food categories, but greatly in the relative proportions of particular seed types in the seed+fruit category. The population irruption could have been triggered by a high reproductive rate that coincided with higher consumption by females of protein-rich foods such as invertebrates and fungi. Population density collapsed at sites as soil stores of utilisable seeds became depleted, mice surviving where their diet could remain diverse.

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Diete, Rebecca L., Paul D. Meek, Christopher R. Dickman, and Luke K. P. Leung. "Ecology and conservation of the northern hopping-mouse (Notomys aquilo)." Australian Journal of Zoology 64, no. 1 (2016): 21. http://dx.doi.org/10.1071/zo15082.

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The northern hopping-mouse (Notomys aquilo) is a cryptic and enigmatic rodent endemic to Australia’s monsoonal tropics. Focusing on the insular population on Groote Eylandt, Northern Territory, we present the first study to successfully use live traps, camera traps and radio-tracking to document the ecology of N. aquilo. Searches for signs of the species, camera trapping, pitfall trapping and spotlighting were conducted across the island during 2012–15. These methods detected the species in three of the 32 locations surveyed. Pitfall traps captured 39 individuals over 7917 trap-nights. Females were significantly longer and heavier, and had better body condition, than males. Breeding occurred throughout the year; however, the greatest influx of juveniles into the population occurred early in the dry season in June and July. Nine individuals radio-tracked in woodland habitat utilised discrete home ranges of 0.39–23.95 ha. All individuals used open microhabitat proportionally more than was available, and there was a strong preference for eucalypt woodland on sandy substrate rather than for adjacent sandstone woodland or acacia shrubland. Camera trapping was more effective than live trapping at estimating abundance and, with the lower effort required to employ this technique, it is recommended for future sampling of the species. Groote Eylandt possibly contains the last populations of N. aquilo, but even there its abundance and distribution have decreased dramatically in surveys over the last several decades. Therefore, we recommend that the species’ conservation status under the Environment Protection and Biodiversity Conservation Act 1999 be changed from ‘vulnerable’ to ‘endangered’.

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Scott, Marilyn E. "Regulation of mouse colony abundance by Heligmosomoides polygyrus." Parasitology 95, no. 1 (August 1987): 111–24. http://dx.doi.org/10.1017/s0031182000057590.

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SUMMARYDespite the ubiquitous presence of parasites, parasitism has not been considered among the list of regulatory factors in animal populations until recently. A detailed long-term study on the impact of the direct life-cycle nematode Heligmosomoides polygyrus on a breeding population of laboratory mice provides a clear example of the ability of helminths to regulate host abundance. In the absence of the parasite, the mouse population equilibrated at a density of 320 mice/m2 as a result of density-dependent effects on recruitment. When the parasite was added and transmission was maintained at high levels, infected mouse populations equilibrated at densities of < 18 mice/m2. Reduced rates of parasite transmission and elimination of the parasite from the system both resulted in an increase in mouse density. These results have implications for both ecology and parasitology as they demonstrate a potentially important but often ignored component of host populations that may well influence host abundance and community structure.

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Cawthorn, J. Michelle, and Robert K. Rose. "The Population Ecology of the Eastern Harvest Mouse (Reithrodontomys humulis) in Southeastern Virginia." American Midland Naturalist 122, no. 1 (July 1989): 1. http://dx.doi.org/10.2307/2425677.

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Skupski, M. P. "Population Ecology of the Western Harvest Mouse, Reithrodontomys megalotis: A Long-Term Perspective." Journal of Mammalogy 76, no. 2 (May 19, 1995): 358–67. http://dx.doi.org/10.2307/1382347.

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6

Tokushima, Hideyuki, and Peter J. Jarman. "Ecology of the rare but irruptive Pilliga mouse, Pseudomys pilligaensis. IV. Habitat ecology." Australian Journal of Zoology 63, no. 1 (2015): 28. http://dx.doi.org/10.1071/zo14057.

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We determined preferences of the Pilliga mouse, Pseudomys pilligaensis, for habitat attributes (ground and vegetation cover) through phases of a population irruption, and characterised refuge sites used when environmental conditions were unfavourable. In general, P. pilligaensis preferred areas with substrate dominated by sand and shrubs rather than rock or litter. However, its habitat selection changed with phases of the irruption. In the Increase phase, it showed no strong habitat preferences, perhaps because the abundance of food (seeds) overrode preferences for more stable habitat values. Its sensitivity to habitat variables increased in the Peak phase. In the Low phase, mice preferred ground cover with higher proportions of sand and shrubs, and lower proportions of rock and litter. Regression analyses suggested that sandy substrate is the most important factor for the refuge habitat of P. pilligaensis, perhaps because a sandy surface can support more understorey shrubs which provide seeds and protection from predators, and provides sites for burrows. Judging from areas where P. pilligaensis was caught during the Low phase, water run-on areas could also characterise refuge habitats. However, further studies are needed to define the species’ refuge habitats fully.

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Pople, Anthony, Joe Scanlan, Peter Cremasco, and Julianne Farrell. "Population dynamics of house mice in Queensland grain-growing areas." Wildlife Research 40, no. 8 (2013): 661. http://dx.doi.org/10.1071/wr13154.

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Context Irregular plagues of house mice cause high production losses in grain crops in Australia. If plagues can be forecast through broad-scale monitoring or model-based prediction, then mice can be proactively controlled by poison baiting. Aims To predict mouse plagues in grain crops in Queensland and assess the value of broad-scale monitoring. Methods Regular trapping of mice at the same sites on the Darling Downs in southern Queensland has been undertaken since 1974. This provides an index of abundance over time that can be related to rainfall, crop yield, winter temperature and past mouse abundance. Other sites have been trapped over a shorter time period elsewhere on the Darling Downs and in central Queensland, allowing a comparison of mouse population dynamics and cross-validation of models predicting mouse abundance. Key results On the regularly trapped 32-km transect on the Darling Downs, damaging mouse densities occur in 50% of years and a plague in 25% of years, with no detectable increase in mean monthly mouse abundance over the past 35 years. High mouse abundance on this transect is not consistently matched by high abundance in the broader area. Annual maximum mouse abundance in autumn–winter can be predicted (R2 = 57%) from spring mouse abundance and autumn–winter rainfall in the previous year. In central Queensland, mouse dynamics contrast with those on the Darling Downs and lack the distinct annual cycle, with peak abundance occurring in any month outside early spring. On average, damaging mouse densities occur in 1 in 3 years and a plague occurs in 1 in 7 years. The dynamics of mouse populations on two transects ~70 km apart were rarely synchronous. Autumn–winter rainfall can indicate mouse abundance in some seasons (R2 = ~52%). Conclusion Early warning of mouse plague formation in Queensland grain crops from regional models should trigger farm-based monitoring. This can be incorporated with rainfall into a simple model predicting future abundance that will determine any need for mouse control. Implications A model-based warning of a possible mouse plague can highlight the need for local monitoring of mouse activity, which in turn could trigger poison baiting to prevent further mouse build-up.

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Khanam, Surrya, Muhammad Mushtaq, Muhammad Sajid Nadeem, and Amjad Rashid Kayani. "Population ecology of the house mouse (Mus musculus) in rural human habitations of Pothwar, Pakistan." Zoology and Ecology 27, no. 2 (March 28, 2017): 106–13. http://dx.doi.org/10.1080/21658005.2017.1307536.

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Mutze, GJ. "Mouse plagues in South Australia cereal-growing areas III. Changes in mouse abundance during plague and non-plague years, and the role of refugia." Wildlife Research 18, no. 5 (1991): 593. http://dx.doi.org/10.1071/wr9910593.

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Mouse populations were monitored at 15 sites between 1980 and 1990, during which time one severe mouse plague, in 1980, and one minor outbreak, in 1984, were recorded. Smaller annual peaks in autumn to early winter were followed by winter population declines. Crops were colonised each year in late winter or early spring by mice from winter refuge habitats with dense, low vegetation, including roadsides and grassland along a railway line. In most years mouse numbers in crops declined during summer, but in 1983-84 they rose continuously during summer and autumn, and reached very high levels. Crops planted in 1984 were invaded by large numbers of mice which had survived through winter in the paddocks, but population levels again crashed in late spring and summer. Recorded population changes were generally consistent with plague probabilities predicted from environmental variables, except in 1985 when numbers failed to reach the predicted high levels at most sites. Population changes in crops during late spring appear to be critical in the development of mouse plagues. Large litter sizes and pregnancy rates, and variable survival rates and size of the breeding population, appear to be important factors at that time.

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10

Gregory, R. D. "Parasite Epidemiology and Host Population Growth: Heligmosomoides polygyrus (Nematoda) in Enclosed Wood Mouse Populations." Journal of Animal Ecology 60, no. 3 (October 1991): 805. http://dx.doi.org/10.2307/5415.

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11

Yalden, D. W. "A population of the Yellow-necked mouse, Apodemus fEavicollis." Journal of Zoology 164, no. 2 (August 20, 2009): 244–50. http://dx.doi.org/10.1111/j.1469-7998.1971.tb01310.x.

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Berry, R. J., and M. E. Jakobson. "Vagility in an island population of the House mouse." Journal of Zoology 173, no. 3 (August 20, 2009): 341–54. http://dx.doi.org/10.1111/j.1469-7998.1974.tb04119.x.

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13

Choquenot, David, and Wendy A. Ruscoe. "Mouse population eruptions in New Zealand forests: the role of population density and seedfall." Journal of Animal Ecology 69, no. 6 (July 7, 2008): 1058–70. http://dx.doi.org/10.1111/j.1365-2656.2000.00462.x.

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14

Tokushima, Hideyuki, Stuart W. Green, and Peter J. Jarman. "Ecology of the rare but irruptive Pilliga mouse (Pseudomys pilligaensis). I. Population fluctuation and breeding season." Australian Journal of Zoology 56, no. 6 (2008): 363. http://dx.doi.org/10.1071/zo08042.

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During a 4-year study in the Pilliga Scrub, trappable densities of the Pilliga mouse, Pseudomys pilligaensis (Muridae), were low before a wildfire in November 1997, higher in late 1999 and February 2000 (5–30 mice ha−1) and very high (up to 83 mice ha−1) in April 2000; however, the densities fell sharply by July 2000, remaining low (0–5 mice ha−1) until trapping ended in October 2001. Site-specific densities and their fluctuations differed among the four trapping sites, although fluctuations were broadly synchronised by the irruption peak. Within-site distribution changed as density fluctuated, from sparse to almost ubiquitous and back to sparse, and within-grid pre-irruption distributions did not predict those after the irruption. After the population decline, mice virtually disappeared from three of the four sites. The species’ breeding season spanned at least October–April; some females bred repeatedly within a season. Prolonged good rains soon after the wildfire may have facilitated the irruption. The study suggested that P. pilligaensis is distributed in disjunct patches of (refuge) habitat within its range except when environmental conditions are favourable, and that it is able to irrupt and become briefly ubiquitous before suddenly declining to a low density and sparse distribution. We suggest approaches for monitoring of this rare species.

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Tokushima, Hideyuki, and Peter J. Jarman. "Ecology of the rare but irruptive Pilliga mouse (Pseudomys pilligaensis). II. Demography, home range and dispersal." Australian Journal of Zoology 56, no. 6 (2008): 375. http://dx.doi.org/10.1071/zo08043.

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We report aspects of demography, home range and movement of the rare Pilliga mouse, Pseudomys pilligaensis, during a population irruption, peaking in April 2000, and the subsequent decline. Population median weights were lower before than at, or after, the irruption peak. Individual mice grew more strongly immediately before the peak than later. The initial weight negatively influenced the growth rate, more so at the irruption peak than before it. At peak, mice at previously occupied sites were heavier than those at recently occupied sites, and male-biased, compared with the female-biased mice dispersing into new sites. The population at the most densely occupied site was strongly female-biased just before and at peak; female dispersers tended to survive better than males. After the irruption, residents survived better than the newly established mice at the only site that retained moderate densities. Individual movements mostly did not differ between sexes, or among sites or size classes. Range overlap, more extensive in spring than in other seasons, was equally frequent within and between sexes. The irruption was apparently initiated by spring breeding in a non-territorial population, with rapid individual growth, and led to dispersal especially by a female-biased subpopulation of lighter (and perhaps younger) mice. After the irruption peak, the rapid growth in weight stopped, suggesting resource restriction, and the social system may no longer have been non-territorial.

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Wilson, Kenneth, Paul Eady, and Adrian J. del Nevo. "Origin of an Insular Population of the Wood Mouse Based on Parasitological Evidence." Journal of Wildlife Diseases 34, no. 1 (January 1998): 150–54. http://dx.doi.org/10.7589/0090-3558-34.1.150.

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17

Moseby, K. E., H. Owens, R. Brandle, J. K. Bice, and J. Gates. "Variation in population dynamics and movement patterns between two geographically isolated populations of the dusky hopping mouse (Notomys fuscus)." Wildlife Research 33, no. 3 (2006): 223. http://dx.doi.org/10.1071/wr05034.

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The ecology of the dusky hopping mouse (Notomys fuscus) was studied at Pelican Waterhole in south-west Queensland and Montecollina Bore in north-east South Australia over an eight-year period. Population parameters of N. fuscus differed markedly between the two study sites. Whilst the population at Montecollina Bore exhibited large fluctuations in size, captures at Pelican Waterhole were lower but more consistent. Recaptures between sessions at Montecollina Bore peaked at 60% but no individuals were recaptured at Pelican Waterhole. No evidence of seasonal breeding was recorded at either site. Male N. fuscus captured at Montecollina Bore were significantly heavier (average 31.4 g) than Pelican Waterhole animals (average 26.6 g). Over a 1–4-night period, the maximum linear distance moved by radio-collared individuals was 1.5 km (average 481 m) at Pelican Waterhole and 400 m (average 199 m) at Montecollina Bore. Differences in population dynamics between the two sites are ascribed to food availability and habitat quality. Whilst Pelican Waterhole may constitute a more stable, less degraded environment, Montecollina Bore appears to be defined by periods of either very high or very low resource availability depending on rainfall. The abundance of dingoes and low cat and fox activity may contribute to the persistence of N. fuscus at the two study sites.

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Singleton, GR, GR Singleton, LK Chambers, LK Chambers, DM Spratt, and DM Spratt. "An Experimental Field Study to Examine Whether Capillaria Hepatica (Nematoda) Can Limit House Mouse Populations in Eastern Australia." Wildlife Research 22, no. 1 (1995): 31. http://dx.doi.org/10.1071/wr9950031.

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A replicated experimental field investigation to examine the effect of the nematode parasite Capillaria hepatica on populations of Mus domesticus is described. A 2-year study was conducted at 7 sites with matching farming practices, soil types, topography and habitat heterogeneity on the Darling Downs in south-eastern Queensland, Australia, where mice cause substantial economic, social and environmental problems. A 4 km2 sampling zone was designated on each site and sites were assigned randomly to one of 3 untreated and 4 treated groups. The parasite was released successfully on 3 occasions at 3 markedly different stages of mouse population dynamics. The first release was in winter 1992 into a low-density, non-breeding population. Mice on treated sites had significantly lower survival for 6 months after the release than mice on untreated sites. The parasite had a relatively high impact on survival of young mice (<72 mm long) 2 months after its release. The greatest impact on old mice (>76 mm) occurred a month later. The most pronounced effects of C. hepatica on mouse abundance occurred during the 4 months after its release (June-September). Mice on the untreated sites, however, had poor survival in September, so by October their population abundance was at a level similar to that of the treated populations. Once breeding began in mid-October C. hepatica had no noticeable effect on mouse population dynamics. This was because the parasite (i) had no effect on breeding of mice, (ii) had minimal transmission and (iii) had a diminishing effect on survival after October. The apparent lack of transmission of C. hepatica was probably due to a combination of low population density, the transient nature of the mouse population and predominantly dry weather for 6 months after the release. A second release was made in February 1993 into a breeding, medium-density host population that was rapidly increasing in abundance. Less than 2% of the population was affected during the release so interest focused on transmission rather than the effect of the parasite on the host's demographic machinery. Transmission did occur at a low rate and the parasite persisted for 4.5 months (to June) when it was decided to boost the proportion of mice infected in order to follow its effect on the overwintering population and the demographic effects during the next breeding season. This late release was compromised by synchronous, widespread and rapid decline in mouse densities. Densities fell from greater than 500 ha to less than 1 ha in less than 6 weeks. Two messages emerge from these studies. First, C. hepatica will not limit mouse populations if it is released into a low-density population during a long dry period on the Darling Downs. Second, more information is needed about the factors that influence the survival and transmission of the parasite under field conditions.

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Bengtson, Sven-Axel, Anders Nilsson, and Sten Rundgren. "Population structure and dynamics of wood mouse Apodemus sylvaticus in Iceland." Ecography 12, no. 4 (December 1989): 351–68. http://dx.doi.org/10.1111/j.1600-0587.1989.tb00910.x.

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Cittadino, Emilio A., María Busch, and Fernando O. Kravetz. "Population abundance and dispersal in Akodonazarae (pampean grassland mouse) in Argentina." Canadian Journal of Zoology 76, no. 6 (June 1, 1998): 1011–18. http://dx.doi.org/10.1139/z98-022.

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Dispersal of Akodon azarae, the pampean grassland mouse, was studied during different phases of the annual cycleof population abundance in longitudinal habitats in agroecosystems. Dispersal rates were higher in the increasing and decliningphases than at times of low and peak densities. The pattern of variation in dispersal rates may have been caused by bothpopulation dynamics and structure, as well by changes in habitat variables that influence rodent survival and reproduction. Lowdispersal rates in spring were related to reproductive activity, which restricts females movements and causes large movementsof males within their home ranges. In autumn, with increasing density, dispersal should be a good strategy for individuals thatdid not gain access to vacant sites. In contrast, in early winter, when density is high and there are no vacant sites, the costs ofdispersal (mortality and competition) are not compensated for by enhanced chances of reproduction. Finally, dispersalincreases after the high mortality experienced by the population in winter, when individuals leave their home ranges, probablybecause of the impoverishment of the habitat during this period reported in earlier works. Dispersal plays a significant role inthe population dynamics of A. azarae and contributes to the persistence of local populations through recolonization.

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Chambers, L. K., G. R. Singleton, and L. A. Hinds. "Fertility control of wild mouse populations: the effects of hormonal competence and an imposed level of sterility." Wildlife Research 26, no. 5 (1999): 579. http://dx.doi.org/10.1071/wr98093.

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We report on a study of confined populations of wild mice in which 67% of females were surgically sterilised to simulate the possible effects of fertility control on population dynamics. Social structure can influence the breeding performance of female mice and, as this may be hormonally controlled, we examined whether the maintenance of hormonal competence by sterilised female mice was necessary to achieve a significant decrease in population size. We compared two methods of surgical sterilisation – tubal ligation, which leaves the animal’s reproductive hormone regulation intact, and ovariectomy, which disrupts the normal regulation of the hormones of the pituitary–ovarian axis. There was no difference in the population sizes produced by the two methods of sterilisation and thus the maintenance of hormonal structure is unlikely to influence the population’s response to fertility control. If anything, the population response to the presence of hormonally competent but sterile females was different from that expected – populations with tubally ligated females had slightly higher growth rates, recruitment of young, and breeding performance, than populations with ovariectomised females. The 67% level of infertility amongst females in the population successfully reduced population size and growth rate when compared with unsterilised populations. This reduction in population size was not related to the level of sterility imposed. Compensation occurred through improved breeding performance of unsterilised females, particularly in the tubally ligated populations.

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Mossman, Catherine A., and Peter M. Waser. "Effects of habitat fragmentation on population genetic structure in the white-footed mouse (Peromyscus leucopus)." Canadian Journal of Zoology 79, no. 2 (February 1, 2001): 285–95. http://dx.doi.org/10.1139/z00-201.

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Habitat fragmentation may have significant consequences for population genetic structure because geographic distance and physical barriers may impede gene flow. In this study, we investigated whether habitat fragmentation affects fine-scale genetic structure of populations of the white-footed mouse (Peromyscus leucopus). We studied 27 populations of P. leucopus, 17 in continuous forest and 10 in isolated woodlots. Populations were trapped in pairs that were either 500 or 2000 m apart. We estimated genetic variation at eight P. leucopus specific microsatellite DNA loci. We discovered significant genetic variation within all populations, but no significant differences in numbers of alleles or heterozygosity between populations. For given population pairs, we found significant genetic differentiation even at very short distances, based on multilocus FST estimates. The amount of genetic differentiation between population pairs was similar in the two habitats. Distance had a marginal effect on genetic differentiation when comparing paired populations separated by 2000 m with those separated by 500 m. However, at a larger geographic scale, there was no evidence of isolation by distance. This study confirms that microsatellite-based studies have the potential to detect interpopulation differentiation at an extremely local scale, and suggests that habitat fragmentation has surprisingly few effects on P. leucopus genetic structure.

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Sullivan, Thomas P. "Influence of Forest Herbicide on Deer Mouse and Oregon Vole Population Dynamics." Journal of Wildlife Management 54, no. 4 (October 1990): 566. http://dx.doi.org/10.2307/3809350.

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Dracup, Evan C., Daniel M. Keppie, and Graham J. Forbes. "The short-term impact of abundant fruit upon deer mouse (Peromyscus maniculatus), southern red-backed vole (Myodes gapperi), and woodland jumping mouse (Napaeozapus insignis) populations." Canadian Journal of Zoology 94, no. 8 (August 2016): 555–63. http://dx.doi.org/10.1139/cjz-2015-0234.

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Fruit has been identified as an important and potentially population-restricting food for southern red-backed voles (Myodes gapperi (Vigors, 1830)), deer mice (Peromyscus maniculatus (Wagner, 1845)), and woodland jumping mice (Napaeozapus insignis (Miller, 1891)). We added domestic dried strawberries (Fragaria × ananassa (Weston) Duchesne ex Rozier (pro sp.)) and European black currants (Ribes nigrum L.), which have native analogues and are preferred foods of these rodents, to white spruce (Picea glauca (Moench) Voss) plantations from May through August 2011 and 2012 to test fruit and fruit-based carbohydrate’s short-term (1–2 years) impact on these rodent populations. We used mark–recapture to estimate density, percentages of population that were juvenile and breeding female, mean home-range size, and body mass during spring and summer of both years, and fecundity via placental scars from euthanized females in summer 2012. Fruit enhancement had no apparent effect on our species’ fecundity, proportion of breeding females or juveniles during spring and summer of either year, nor were there differences among these metrics in spring 2012 following 2011 fruit additions. Overall, there were no impacts to the short-term adult population dynamics for any species during fruit addition. We are led to believe that short-term pulses of fruit and (or) fruit-based carbohydrate abundance do little to influence temperate forest small-mammal populations.

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Petri, B., S. Pääbo, A. Von Haeseler, and D. Tautz. "Paternity assessment and population subdivision in a natural population of the larger mouse‐eared bat Myotis myotis." Molecular Ecology 6, no. 3 (March 1997): 235–42. http://dx.doi.org/10.1046/j.1365-294x.1997.00176.x.

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Gregory, R. D., S. S. J. Montgomery, and W. I. Montgomery. "Population Biology of Heligmosomoides polygyrus (Nematoda) in the Wood Mouse." Journal of Animal Ecology 61, no. 3 (October 1992): 749. http://dx.doi.org/10.2307/5628.

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Sweeny, Amy R., Gregory F. Albery, Saudamini Venkatesan, Andy Fenton, and Amy B. Pedersen. "Spatiotemporal variation in drivers of parasitism in a wild wood mouse population." Functional Ecology 35, no. 6 (April 4, 2021): 1277–87. http://dx.doi.org/10.1111/1365-2435.13786.

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Krebs, CJ, GR Singleton, and AJ Kenney. "Six reasons why feral house mouse populations might have low recapture rates." Wildlife Research 21, no. 5 (1994): 559. http://dx.doi.org/10.1071/wr9940559.

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Many feral house mouse populations have low recapture rates (0-20%) in live-trapping studies carried out at 2-4-week intervals. We consider six hypotheses to explain low recapture rates. We radio-collared 155 house mice between September 1992 and May 1993 in agricultural fields on the Darling Downs of south-eastern Queensland during a phase of population increase. Low recapture rates during the breeding season were due to low trappability and during the non-breeding period to nomadic movements. During the breeding season radio-collared mice of both sexes survived well and moved mostly small distances (<ll m). Low trappability has consequences for the precision of population indices that rely on catch per unit effort. Capture-recapture models robust to heterogeneity of trap responses should be used to census feral Mus populations.

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Tokushima, Hideyuki, and Peter J. Jarman. "Ecology of the rare but irruptive Pilliga mouse, Pseudomys pilligaensis. V. Relationships with yellow-footed antechinus, Antechinus flavipes, and house mouse, Mus domesticus." Australian Journal of Zoology 65, no. 2 (2017): 120. http://dx.doi.org/10.1071/zo16063.

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We investigated relationships between Pseudomys pilligaensis and other small mammal species in terms of their population fluctuations and habitat selection during a population irruption of P. pilligaensis. Antechinus flavipes showed only seasonal fluctuations in numbers, suggesting that it did not respond to the same environmental factors as P. pilligaensis. A. flavipes consistently selected areas with less sand in all phases of the irruption of P. pilligaensis, resulting in a clear separation from P. pilligaensis except in the Peak phase of the latter’s irruption. Numbers of Mus domesticus fluctuated similarly to P. pilligaensis until the latter’s irruption peak in April 2000. However, M. domesticus disappeared after July 2000 from our sites. M. domesticus seemed to occupy the area only temporarily when seeds were abundant. In the Increase and Peak phases of the irruption of P. pilligaensis, M. domesticus occupied core habitats characterised by more sand and shrub, and less litter, while in the Low phase P. pilligaensis occupied the core habitats that M. domesticus used to occupy. This may suggest that M. domesticus was excluded from core habitats through competition with P. pilligaensis in the Low phase of the latter’s irruption. However, since increased anthropogenic disturbance might create conditions that M. domesticus prefers, it is important to assess carefully any impacts of such disturbance on P. pilligaensis.

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Thomas, William K., and Andrew T. Beckenbach. "Mitochondrial DNA restriction site variation in the Townsend's vole, Microtus townsendii." Canadian Journal of Zoology 64, no. 12 (December 1, 1986): 2750–56. http://dx.doi.org/10.1139/z86-399.

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The mitochondrial DNA (mtDNA) from the Townsend's vole, Microtus townsendii, was compared with mouse mtDNA by positioning vole restriction enzyme fragments on the known laboratory mouse mtDNA molecule by homology hybridization. The vole mitochondrial genome is conserved in general sequence organization and size but does contain a nonhomologous region of more than 600 base pairs not found in the mouse sequence. Thirty-five voles were collected from seven different localities throughout the range of the species, including insular populations on Bowen and Vancouver islands. The variation of vole mtDNA sequences within this species was assayed with six hexameric and four tetrameric type II restriction endonucleases. These individuals can be divided into seven distinct maternal lines. The level of nucleotide substitution between populations is shown to be as high as 0.896 ± 0.350%. The voles from Bowen Island showed no detectable variation within their population, or divergence from a mainland population on the adjacent coast. This fact suggests a recent colonization of Bowen Island. The samples from Vancouver Island fall into two major maternal lines, which show 0.453 ± 0.240% divergence. These insular maternal lines are 0.677 ± 0.257% divergent from the most closely related mainland population. These results suggest that the voles on Vancouver Island represent long-established maternal lines, and are not derived by a recent colonization from a mainland source population. Based on conservative estimates for rates of nucleotide substitution, Vancouver Island has been inhabited by the Townsend's vole since at least the Olympic interglacial.

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Evstafiev, Igor. "Mice of the genus Mus in the Crimea: species diagnostics, distribution, and ecology." Theriologia Ukrainica 2021, no. 21 (July 1, 2021): 37–53. http://dx.doi.org/10.15407/tu2105.

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The paper presents the first detailed summary of the current state of mice of the genus Mus in the Crimea, namely of the house mouse (Mus musculus Linnaeus, 1758) and steppe mouse (Mus spicilegus Petenyi, 1882). Morphological structures of the house mouse and steppe mouse are characterized and external and craniometrical features important for species diagnostics are presented. Most of the morphological characters tend to vary within the entire geographic range of both species. Body length of house mice is significantly greater compared to that of steppe mice. Tail length in house mice is greater than in steppe mice, but the tail index is greater in the latter. Therefore, house mice look more ‘short-tailed’, and this feature can be used as an additional diagnostic character. In steppe mice, the tail becomes thinner gradually from base to tip and thus it is awl-shaped. The tail of fit house mice, especially of autumn-winter generations, often has a thickened base, which increases the visual effect of a short tail. Among internal characters, the most significant are the differences between testicles size of mature males. For species diagnostics of mice of the genus Mus, the size and shape of the following cranial structures can be used: location of the root and frontal wall of the crown of the first upper molar (M1) in relation to the diastema; zygomatic process of the maxilla and zygomatic arch; palatine foramens foramina palatinum, and others. These are reliable characters for morphological identification of M. musculus and M. spicilegus in the territory of the Crimea, in the zone of their sympatry. Reliable diagnostic characters are the dimensions of palatine foramens. In general, the entire complex of characters analysed in this study should be used for correct morphological diagnostics of these species. Features of distribution and population dynamics of the house mouse and steppe mouse in the Crimea are studied. It has been revealed that both the house mouse and the steppe mouse are distributed mainly in the lowland part of the Crimea and the forest-steppe belt of the foothills. Data on the ecology of species are presented, including specifics of reproduction and habitat preferences. The place and role of house mice in small-mammal assemblages of various landscape and ecological zones are estimated.

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Aivelo, Tuomas, Juha Laakkonen, and Jukka Jernvall. "Population- and Individual-Level Dynamics of the Intestinal Microbiota of a Small Primate." Applied and Environmental Microbiology 82, no. 12 (April 8, 2016): 3537–45. http://dx.doi.org/10.1128/aem.00559-16.

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ABSTRACTLongitudinal sampling for intestinal microbiota in wild animals is difficult, leading to a lack of information on bacterial dynamics occurring in nature. We studied how the composition of microbiota communities changed temporally in free-ranging small primates, rufous mouse lemurs (Microcebus rufus). We marked and recaptured mouse lemurs during their mating season in Ranomafana National Park in southeastern mountainous rainforests of Madagascar for 2 years and determined the fecal microbiota compositions of these mouse lemurs with MiSeq sequencing. We collected 160 fecal samples from 71 animals and had two or more samples from 39 individuals. We found small, but statistically significant, effects of site and age on microbiota richness and diversity and effects of sex, year, and site on microbiota composition, while the within-year temporal trends were less clear. Within-host microbiota showed pervasive variation in intestinal bacterial community composition, especially during the second study year. We hypothesize that the biological properties of mouse lemurs, including their small body size and fast metabolism, may contribute to the temporal intraindividual-level variation, something that should be testable with more-extensive sampling regimes.IMPORTANCEWhile microbiome research has blossomed in recent years, there is a lack of longitudinal studies on microbiome dynamics on free-ranging hosts. To fill this gap, we followed mouse lemurs, which are small heterothermic primates, for 2 years. Most studied animals have shown microbiota to be stable over the life span of host individuals, but some previous research also found ample within-host variation in microbiota composition. Our study used a larger sample size than previous studies and a study setting well suited to track within-host variation in free-ranging mammals. Despite the overall microbiota stability at the population level, the microbiota of individual mouse lemurs can show large-scale changes in composition in time periods as short as 2 days, suggesting caution in inferring individual-level patterns from population-level data.

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KEESING, FELICIA, and TARA CRAWFORD. "Impacts of density and large mammals on space use by the pouched mouse (Saccostomus mearnsi) in central Kenya." Journal of Tropical Ecology 17, no. 3 (April 26, 2001): 465–72. http://dx.doi.org/10.1017/s0266467401001328.

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Rodents in tropical Africa have been recognized for decades both as important pests of agriculture and as reservoirs of numerous diseases that affect humans and livestock (Keesing 2000). Despite this recognition, however, little is known about the ecology and behaviour of these abundant and widespread animals. Because the impacts of small mammals as pests are expected to be some function of their population density, most ecological research on African rodents has focused on their population dynamics (Delany 1972, 1986; Leirs et al. 1994, 1996a).

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Cuthbert, Richard J., Ross M. Wanless, Andrea Angel, Marie-Helene Burle, Geoff M. Hilton, Henk Louw, Paul Visser, John W. Wilson, and Peter G. Ryan. "Drivers of predatory behavior and extreme size in house mice Mus musculus on Gough Island." Journal of Mammalogy 97, no. 2 (February 28, 2016): 533–44. http://dx.doi.org/10.1093/jmammal/gyv199.

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Abstract In comparison to the mainland, populations of rodents on islands are often characterized by a suite of life history characteristics termed the “island syndrome.” Populations of rodents introduced to islands are also well known for their impacts on native species that have evolved in the absence of mammalian predators. We studied the ecology and behavior of introduced house mice Mus musculus on Gough Island where they are the only terrestrial mammal and where their predatory behavior is having a devastating impact on the island’s burrowing petrel (order Procellariiformes ) population and the Critically Endangered Tristan albatross Diomedea dabbenena . Mice on Gough exhibit extreme features of the island syndrome, including: a body mass 50–60% greater than any other island mouse population, peak densities among the highest recorded for island populations, and low seasonal variation in numbers compared to other studied islands. Seasonal patterns of breeding and survival were linked to body condition and mass, and mice in areas with high chick predation rates were able to maintain higher mass and condition during the winter when mouse mortality rates peak. Within-site patterns of chick predation indicate that proximity to neighboring predated nests and nesting densities are important factors in determining the likelihood of predation. We conclude that selection for extreme body mass and predatory behavior of mice result from enhanced overwinter survival. Small mammal populations at temperate and high latitudes are normally limited by high mortality during the winter, but on Gough Island mice avoid that by exploiting the island’s abundant seabird chicks.

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Buchthal, Joanna, Sam Weiss Evans, Jeantine Lunshof, Sam R. Telford, and Kevin M. Esvelt. "Mice Against Ticks: an experimental community-guided effort to prevent tick-borne disease by altering the shared environment." Philosophical Transactions of the Royal Society B: Biological Sciences 374, no. 1772 (March 25, 2019): 20180105. http://dx.doi.org/10.1098/rstb.2018.0105.

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Mice Against Ticks is a community-guided ecological engineering project that aims to prevent tick-borne disease by using CRISPR-based genome editing to heritably immunize the white-footed mice ( Peromyscus leucopus ) responsible for infecting many ticks in eastern North America. Introducing antibody-encoding resistance alleles into the local mouse population is anticipated to disrupt the disease transmission cycle for decades. Technology development is shaped by engagement with community members and visitors to the islands of Nantucket and Martha's Vineyard, including decisions at project inception about which types of disease resistance to pursue. This engagement process has prompted the researchers to use only white-footed mouse DNA if possible, meaning the current project will not involve gene drive. Instead, engineered mice would be released in the spring when the natural population is low, a plan unlikely to increase total numbers above the normal maximum in autumn. Community members are continually asked to share their suggestions and concerns, a process that has already identified potential ecological consequences unanticipated by the research team that will likely affect implementation. As an early example of CRISPR-based ecological engineering, Mice Against Ticks aims to start small and simple by working with island communities whose mouse populations can be lastingly immunized without gene drive. This article is part of a discussion meeting issue ‘The ecology and evolution of prokaryotic CRISPR-Cas adaptive immune systems’.

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Woods, RE, and FD Ford. "Observations on the behaviour of the smoky mouse Pseudomys fumeus (Rodentia: Muridae)." Australian Mammalogy 22, no. 1 (2000): 35. http://dx.doi.org/10.1071/am00035.

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This study examined aspects of behaviour in a captive colony of smoky mice, Pseudomys fumeus, over a two year period. Wherever possible behaviours observed in the captive population are compared to data collected in a study of a wild population in south-eastern New South Wales. This paper provides the first recorded observations of behavior in this species. Both captive and wild populations of P. fumeus display strictly nocturnal circadian activity rhythms. In the captive study, P. fumeus were found to exhibit social interactions similar to some previously studied Pseudomys species. However, in the wild, the species was found to communally nest during the breeding season, behaviour not observed in other Pseudomys from similar habitats. P. fumeus in captivity can have more than two litters in one breeding season which suggests that their reproductive parameters are more flexible than previous studies of wild populations have shown. Field data indicate that post-partum oestrus can occur in this species, and that gestation lasts for approximately 30 days, although these observations are based on a small sample.

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Arthur, A. D., R. P. Pech, A. Drew, E. Gifford, S. Henry, and A. McKeown. "The effect of increased ground-level habitat complexity on mouse population dynamics." Wildlife Research 30, no. 6 (2003): 565. http://dx.doi.org/10.1071/wr02071.

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We investigated experimentally the influence of habitat structure on the population dynamics of house mice. Three habitat types were used. In one, dense stands of regenerating cypress pine were felled and left in situ to cover at least 40% of experimental plots, providing high complexity at ground level; in another, dense stands of regenerating pine were left intact, providing low complexity at ground level; in the third, open grassland adjacent to dense stands of regenerating pine also provided low complexity at ground level. Mouse populations occurred at higher densities in felled pine plots compared with both the standing pine and grassland plots, consistent with the hypothesis that the presence of increased habitat complexity at ground level reduced the impact of predation. Even though populations responded to the felled pine, they dropped to very low densities over winter, suggesting that the habitat was still marginal for the persistence of mice, probably due to a lack of food. The results are discussed with reference to their implications for the influence that habitat structure may have on the impact of introduced predators on native species.

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Pyke, GH, and DG Read. "Hastings River mouse Pseudomys oralis: a biological review." Australian Mammalogy 24, no. 2 (2002): 151. http://dx.doi.org/10.1071/am02151.

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The distribution and abundance of the Hastings River mouse (Pseudomys oralis) have declined since the Pleistocene, and it is now one of Australia?s rarest mammals. It was presumed extinct until rediscovered in south-east Queensland in 1969. Because of this past, and apparently ongoing decline, as well as the nature and extent of known or presumed threats, P. oralis is considered threatened with extinction. Like other ?threatened? species, P. oralis is presently the subject of a recovery process, which aims to improve its conservation status. Essential to the development of a recovery strategy for any species is a reasonable knowledge of its biology and the nature and extent of threatening processes. While there has been considerable recent interest in the biology of P. oralis and possible threats to its populations, there has not been a comprehensive and detailed review of its biology. The present review indicates that the necessary information for developing a recovery strategy for P. oralis is lacking. Progress has been made in understanding habitat requirements and developing the ability to predict its presence or absence, as well as knowledge of the biology of individuals. However, we presently have little understanding of the population biology or community ecology of the species. We do not, in particular, know what factors determine the distribution and abundance of P. oralis, nor how these factors operate. In this situation we can potentially provide some protection for P. oralis through strategies that avoid or minimise human impacts on habitat areas, but a strategy aimed at species recovery is impossible.

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Waudby, Helen P. "Population characteristics of house mice (Mus musculus) on southern Yorke Peninsula, South Australia." Australian Mammalogy 31, no. 2 (2009): 111. http://dx.doi.org/10.1071/am08021.

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Seasonal population characteristics of house mice (Mus musculus), including the effect of season on body mass, were studied at Innes National Park, southern Yorke Peninsula. Mice were caught with Elliott traps, ear-notched, and released. Over 1550 trap-nights (January to December 2006, excluding May), 202 mice were caught. The overall capture success rate was 13.03 mice per 100 trap-nights. The recapture rate was 42.57%. Body mass of adult house mice varied significantly among seasons (P = 0.009). In particular, mouse body mass varied between autumn and winter (P = 0.018), and spring and winter (P = 0.023). The body mass of mice captured in autumn and then recaptured in winter was also significantly different (P = 0.006). This study is the first published for M. musculus population characteristics on Yorke Peninsula and adds to the relatively limited information available on house mouse populations in non-agricultural habitats.

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Montgomery, W. I., and M. Dowie. "The Distribution and Population Regulation of the Wood Mouse Apodemus sylvaticus on Field Boundaries of Pastoral Farmland." Journal of Applied Ecology 30, no. 4 (1993): 783. http://dx.doi.org/10.2307/2404256.

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Bengtson, Sven-Axel, Anders Nilsson, and Sten Rundgren. "Unforeseen Disruption of Wood Mouse Population Dynamics after Food Reduction: A Field Experiment." Oikos 56, no. 3 (November 1989): 379. http://dx.doi.org/10.2307/3565624.

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Caire, William. "A Breeding Population of the Northern Pygmy Mouse, Baiomys taylori, in Southwestern Oklahoma." Southwestern Naturalist 36, no. 3 (September 1991): 364. http://dx.doi.org/10.2307/3671693.

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Sullivan, Thomas P. "Demographic responses of small mammal populations to a herbicide application in coastal coniferous forest: population density and resiliency." Canadian Journal of Zoology 68, no. 5 (May 1, 1990): 874–83. http://dx.doi.org/10.1139/z90-127.

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This study was designed to assess the demographic responses of small mammal populations to herbicide-induced habitat alteration in a 7-year-old Douglas-fir plantation near Maple Ridge, British Columbia, Canada. Populations of the deer mouse (Peromyscus maniculatus), Oregon vole (Microtus oregoni), Townsend chipmunk (Eutamias townsendii), and shrews (Sorex spp.) were sampled in control and treatment habitats from April 1981 to September 1983 and from April to October 1985. Recolonization of removal areas by these species was also monitored in both habitats. There was little difference in abundance of deer mice, Oregon voles, and shrews between control and treatment study areas. Chipmunk populations appeared to decline temporarily on the treatment areas relative to controls. Recolonization by voles was not affected by habitat change, but for deer mice was lower on the treatment than control area. Both deer mouse and Oregon vole populations were at comparable densities on control and treatment areas in the second and fourth years after herbicide treatment. The proportion of breeding animals and average duration of life were similar in control and treatment populations of deer mice and voles. These small mammal species should be able to persist in areas of coastal coniferous forest that are treated with herbicide for conifer release.

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Allen, Daniel L., and David L. Otis. "Relationship between deer mouse population parameters and dieldrin contamination in the Rocky Mountain Arsenal National Wildlife Refuge." Canadian Journal of Zoology 76, no. 2 (February 1, 1998): 243–50. http://dx.doi.org/10.1139/z97-188.

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A small-mammal capture-recapture study was conducted in the Rocky Mountain Arsenal National Wildlife Refuge to quantify the effects of soil contamination with dieldrin on demographic parameters of deer mouse (Peromyscus maniculatus) populations. Increased dieldrin concentrations were significantly associated with larger deer mouse populations, although the size of populations on contaminated sites decreased during the study. The most parsimonious model for estimating survival rates was one in which survival was a decreasing function of dieldrin concentration. A significantly higher proportion of female deer mice in the populations residing on the more highly contaminated sites exhibited signs of reproductive activity. Development of genetic resistance in P. maniculatus to chronic chemical exposure is suggested as a possible mechanism responsible for the species' observed dominance and relatively high densities on contaminated sites. Under the additional stress of unfavorable environmental conditions, however, these populations may suffer disproportionately greater mortality. The design and analytical methods presented offer a rigorous statistical approach to assessing the effects of environmental contamination on small mammals at the population level.

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Jerry, Dean R., Tanya A. Dow, Martin S. Elphinstone, and Peter R. Baverstock. "Historical and Contemporary Maternal Population Structuring in the Endangered Hastings River Mouse (Pseudomys oralis)." Conservation Biology 12, no. 5 (October 1998): 1017–22. http://dx.doi.org/10.1046/j.1523-1739.1998.97258.x.

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Wilson, BA, NM White, A. Hanley, and DL Tidey. "Population fluctuations of the New Holland mouse Pseudomys novaehollandiae at Wilson?s Promontory National Park, Victoria." Australian Mammalogy 27, no. 1 (2005): 49. http://dx.doi.org/10.1071/am05049.

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The New Holland mouse (Pseudomys novaehollandiae) was first recorded at Wilson?s Promontory in 1972 in heathland vegetation, but has not been located in this habitat subsequently. The species was not trapped again until 1993 when it was found in calcarenite dune woodland on the Yanakie Isthmus. The aims of this study were to assess the population dynamics and habitat use of the species in this dune habitat. Mark-recapture trapping was conducted at three sites from 1999 to 2002. One site was located on low (0 - 5 m), flat sand dunes and open swales, another on medium (5 ? 10 m) vegetated dunes, and the third on high (20 m) steep vegetated dunes. The three sites had not been burnt for 30 to 50 years. The abundance of P. novaehollandiae was related to understorey vegetation density and differences in population densities on the sites are likely to be related to the primary succession stages on the sand dunes, rather than fire history. The maximum density (24 ha-1) recorded at one site was very high compared to other Victorian populations, however this was followed by a substantial decline in numbers within the year. At another site a small population declined to extinction. Populations on the isthmus are thus capable of achieving high densities but may decline quickly. Rainfall patterns may have affected the population fluctuations, but further research is required to elucidate fully the factors involved in the long-term dynamics of this species.

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Ramos-Jiliberto, Rodrigo, Eduardo González-Olivares, and Francisco Bozinovic. "Population-Level Consequences of Antipredator Behavior: A Metaphysiological Model Based on the Functional Ecology of the Leaf-Eared Mouse." Theoretical Population Biology 62, no. 1 (August 2002): 63–80. http://dx.doi.org/10.1006/tpbi.2002.1581.

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Berry, R. J., and M. E. Jakobson. "Ecological genetics of an island population of the House mouse (Mus musculus)." Journal of Zoology 175, no. 4 (August 20, 2009): 523–40. http://dx.doi.org/10.1111/j.1469-7998.1975.tb01415.x.

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BERRY, R. J., M. E. JAKOBSON, and J. PETERS. "Inherited differences within an island population of the House mouse (Mus domesticus)." Journal of Zoology 211, no. 4 (April 1987): 605–18. http://dx.doi.org/10.1111/j.1469-7998.1987.tb04474.x.

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Sutherland, Duncan R., Peter B. Banks, Jens Jacob, and Grant Singleton. "Shifting age structure of house mice during a population outbreak." Wildlife Research 31, no. 6 (2004): 613. http://dx.doi.org/10.1071/wr04010.

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A technique to age wild house mice, Mus domesticus, in Australia using the dry weight of the eye lens based on known-age mice from semi-natural enclosures is described and presented for 3–32-week-old mice. At four sampling periods from November 2000 to September 2001, the age frequency distributions of free-living house mice were determined using this relationship. The distributions of ages shifted between seasons from relatively young animals at the beginning of the breeding season (November 2001), coinciding with low mouse abundance, to progressively older distributions in each sample as breeding continued, ending with the cessation of breeding and a population crash before the last sample. No significant difference was detected between the sexes at any of the four periods. These results are consistent with the suggestion that the formation of mouse outbreaks requires a shift in age structure towards younger mice.

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Journal articles on the topic 'Mouse population ecology'

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