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Journal articles on the topic 'Diel activity patterns'

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Author: Grafiati

Published: 1 June 2024

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1

Selvan, Kangaraj Muthamizh, Bawa Mothilal Krishnakumar, Pasiyappazham Ramasamy, and Thangadurai Thinesh. "Diel activity pattern of meso-carnivores in the suburban tropical dry evergreen forest of the Coromandel Coast, India." Journal of Threatened Taxa 11, no. 8 (June 26, 2019): 13960–66. http://dx.doi.org/10.11609/jott.4850.11.8.13960-13966.

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Sympatric and similar body-sized species exhibit interspecific competition for resources. The present study investigated diel activity of five meso-carnivore species (Canis aureus, Felis chaus, Paradoxurus hermaphroditus, Viverricula indica, and Herpestes edwardsii) in a human-dominated region of Auroville and around Pondicherry University using camera-trap survey data. Diel activity pattern and overlap were estimated using the kernel density method. The Jungle Cat Felis chaus and the Golden Jackal Canis aureus exhibited cathemeral diel activity with a high overlap between them (Δ̂1 = 0.78). The Indian Grey Mongoose Herpestes edwardsii displayed a diurnal activity pattern and had low overlap with the Small Indian Civet Viverricula indica (Δ̂1 = 0.34). Moderate overlap was found between the Small Indian Civet and the Palm Civet Paradoxurus hermaphroditus (Δ̂1 = 0.32). Therefore, diel activity patterns of mesocarnivores indicate inter- and intra-specific trade-off competition avoidance resulting in successful foraging. The present camera-trap survey has provided insights into diel activity patterns and more attention is required to be paid to the study of feeding and breeding ecology of these species in human-dominated landscapes.

2

Boyer, S., L. Maillot, L.-C. Gouagna, D. Fontenille, D. D. Chadee, and G. Lemperiere. "Diel Activity Patterns of MaleAedes albopictusin the Laboratory." Journal of the American Mosquito Control Association 29, no. 1 (March 2013): 74–77. http://dx.doi.org/10.2987/12-6259r.1.

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3

Frampton, Geoff K., Paul J. Van den Brink, and Steve D. Wratten. "Diel activity patterns in an arable collembolan community." Applied Soil Ecology 17, no. 1 (May 2001): 63–80. http://dx.doi.org/10.1016/s0929-1393(00)00128-1.

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4

Primavera, J. Honculada, and J. Lebata. "Diel activity patterns in Metapenaeus and Penaeus juveniles." Hydrobiologia 295, no. 1-3 (January 1995): 295–302. http://dx.doi.org/10.1007/bf00029136.

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5

Angielczyk, K. D., and L. Schmitz. "Nocturnality in synapsids predates the origin of mammals by over 100 million years." Proceedings of the Royal Society B: Biological Sciences 281, no. 1793 (October 22, 2014): 20141642. http://dx.doi.org/10.1098/rspb.2014.1642.

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Nocturnality is widespread among extant mammals and often considered the ancestral behavioural pattern for all mammals. However, mammals are nested within a larger clade, Synapsida, and non-mammalian synapsids comprise a rich phylogenetic, morphological and ecological diversity. Even though non-mammalian synapsids potentially could elucidate the early evolution of diel activity patterns and enrich the understanding of synapsid palaeobiology, data on their diel activity are currently unavailable. Using scleral ring and orbit dimensions, we demonstrate that nocturnal activity was not an innovation unique to mammals but a character that appeared much earlier in synapsid history, possibly several times independently. The 24 Carboniferous to Jurassic non-mammalian synapsid species in our sample featured eye morphologies consistent with all major diel activity patterns, with examples of nocturnality as old as the Late Carboniferous ( ca 300 Ma). Carnivores such as Sphenacodon ferox and Dimetrodon milleri , but also the herbivorous cynodont Tritylodon longaevus were likely nocturnal, whereas most of the anomodont herbivores are reconstructed as diurnal. Recognizing the complexity of diel activity patterns in non-mammalian synapsids is an important step towards a more nuanced picture of the evolutionary history of behaviour in the synapsid clade.

6

Cooper, William E., Carolee Caffrey, and Laurie J. Vitt. "Diel Activity Patterns in the Banded Gecko, Coleonyx variegatus." Journal of Herpetology 19, no. 2 (June 1985): 308. http://dx.doi.org/10.2307/1564192.

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7

Kaartvedt, S. "Diel activity patterns in deep-living cumaceans and amphipods." Marine Ecology Progress Series 30 (1986): 243–49. http://dx.doi.org/10.3354/meps030243.

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8

Mulder, I. M., J. B. Dempson, I. A. Fleming, and M. Power. "Diel activity patterns in overwintering Labrador anadromous Arctic charr." Hydrobiologia 840, no. 1 (March 19, 2019): 89–102. http://dx.doi.org/10.1007/s10750-019-3926-7.

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9

Lobo, Jorge M., and Eva Cuesta. "Seasonal variation in the diel activity of a dung beetle assemblage." PeerJ 9 (July 12, 2021): e11786. http://dx.doi.org/10.7717/peerj.11786.

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The seasonal and diel variations of dung beetle species were studied in an Iberian mid-mountain locality to examine the interaction between these two temporal rhythms. We assume that a seasonal variation in the diel activity would support the notion that both rhythms may assist in achieving a quick and flexible response when the climatic conditions change. Data coming from 4,104 pitfall traps placed during 15 sampling periods and totalling 30 daily sampling cycles were analysed using circular statistics and General Linear Models. A wide variety of seasonal patterns are observed, highlighting those species with a clear unimodal or spring-autumn bimodal seasonal pattern. However, a midday diel pattern is the norm in most of the species, except in the case of those exhibiting a high body weight that prefer dusk or night periods. We hypothesize that most of the dung beetle species fly at noon to promote the passive heating of their muscle activity and minimize the metabolic energy expenditure. Results only partially support the seasonal variation in diel activity. Diel preferences are mainly manifested at the time of the year in which the abundance is greater. Approximately two-thirds of the considered species exhibit a similar diel activity along their seasonal active period. As consequence, a significant portion of the dung beetle species currently inhabiting Mediterranean mid-mountains are not able to use the daily variation in climatic conditions to limit the inconveniences of climate change.

10

Hertel, Anne G., Jon E. Swenson, and Richard Bischof. "A case for considering individual variation in diel activity patterns." Behavioral Ecology 28, no. 6 (September 11, 2017): 1524–31. http://dx.doi.org/10.1093/beheco/arx122.

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11

Larrucea, Eveline S., and Peter F. Brussard. "Diel and Seasonal Activity Patterns of Pygmy Rabbits (Brachylagus idahoensis)." Journal of Mammalogy 90, no. 5 (October 15, 2009): 1176–83. http://dx.doi.org/10.1644/08-mamm-a-272.1.

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12

Munro, R. H. M., S. E. Nielsen, M. H. Price, G. B. Stenhouse, and M. S. Boyce. "SEASONAL AND DIEL PATTERNS OF GRIZZLY BEAR DIET AND ACTIVITY IN WEST-CENTRAL ALBERTA." Journal of Mammalogy 87, no. 6 (December 2006): 1112–21. http://dx.doi.org/10.1644/05-mamm-a-410r3.1.

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13

Ohyama, Leo, Douglas B. Booher, and Andrea Lucky. "Diel Patterns Hold Promise as an Ecological Trait for Ants." Sociobiology 71, no. 1 (February 23, 2024): e10081. http://dx.doi.org/10.13102/sociobiology.v71i1.10081.

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Ecological traits have flourished in insect-based studies, resulting in a substantial and growing list of measurable traits. One trait that will likely become more attractive as data quality and curation improve is the diel patterns of insect activities. Diel patterns in ants can help better understand vital ecological processes such as competition and invasion biology. Because diel activity has the potential to be an informative trait in ants, we assessed the diel designations of foraging ants across the literature to quantify and assess the variation and sampling extent of this particular trait. We collected diel designations from 104 peer-reviewed scientific articles and quantified these data across important and documented ecological traits. We found that a disproportionate amount of solitary foraging ants were primarily diurnal foragers relative to ants that cooperatively forage. Our data show that diel patterns in foraging vary widely within and across ant genera. Importantly, we highlight the undersampling of this crucial ecological trait, which currently limits its utility. Our efforts highlight the importance of assessing an ecologically important trait’s landscape of reported data.

14

Larranaga, Nicolas, Magnus L. Wallerius, Haoyu Guo, Julien Cucherousset, and Jörgen I. Johnsson. "Invasive brook trout disrupt the diel activity and aggregation patterns of native brown trout." Canadian Journal of Fisheries and Aquatic Sciences 76, no. 7 (July 2019): 1052–59. http://dx.doi.org/10.1139/cjfas-2018-0110.

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In European streams, native brown trout (Salmo trutta) feed primarily on aquatic prey but consume a higher proportion of terrestrial prey in sympatry with non-native brook trout (Salvelinus fontinalis). This is a rare example of diet convergence that may be associated with changes in diel activity or aggregation pattern by brown trout in sympatry. We recorded the activity and positions of brown trout from two origins and in two competition modes (allopatry versus sympatry, four combinations) placed in replicated stream enclosures for 29 days to test these hypotheses. Brown trout originating from or placed in sympatry were more diurnal and aggregated than those originating from or placed in allopatry. Changes in the diel activity of brown trout placed in a novel competition mode occurred progressively throughout the study. Thus, brown trout show strong behavioral flexibility in response to the non-native competitor and can revert to allopatric behavior when brook trout is removed from the system. These behavioral adjustments may have unsuspected effects on food webs and ecosystem functioning, which deserve further attention.

15

James, M. C., C. A. Ottensmeyer, S. A. Eckert, and R. A. Myers. "Changes in diel diving patterns accompany shifts between northern foraging and southward migration in leatherback turtles." Canadian Journal of Zoology 84, no. 5 (May 2006): 754–65. http://dx.doi.org/10.1139/z06-046.

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Diel diving patterns have been widely documented among plankton-feeding marine vertebrates. In many cases, these patterns have been interpreted as a response to the diel vertical migrations of prey. The leatherback turtle, Dermochelys coriacea (Vandelli, 1761), is a large marine predator that exploits gelatinous plankton in disparate foraging areas. Individuals of this species spend extended periods at northern latitudes before moving southward through pelagic waters. To identify and compare potential diel patterns of diving behaviour in temperate areas, where foraging has been observed, versus during southward migration, 15 subadult and adult leatherbacks were equipped with satellite-linked time–depth recorders off Nova Scotia, Canada. We observed variation in nocturnal versus diurnal behaviour, both at northern latitudes and during migration; however, diel differences in both diving and surface activity were much less pronounced while leatherbacks were in the north. We interpret the difference in leatherback diel diving regimen to reflect a response to changing resource conditions at these times, with leatherbacks foraging throughout the day and night at high latitudes, then changing to a bimodal pattern of diving during southward migration, with generally longer, deeper diving occurring during the night versus during the day. By quantifying diel changes in leatherback behaviour, we provide the first surface time correction factors based on multiple individuals for use in estimating abundance from aerial surveys.

16

Price, Christopher J., William M. Tonn, and Cynthia A. Paszkowski. "Intraspecific patterns of resource use by fathead minnows in a small boreal lake." Canadian Journal of Zoology 69, no. 8 (August 1, 1991): 2109–15. http://dx.doi.org/10.1139/z91-294.

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An isolated, single-species assemblage of fathead minnows (Pimephales promelas) was studied to identify patterns of feeding and diel activity among three life-history groups (adult males, adult females, and juveniles). Minnows were collected from inshore and offshore stations during monthly (May–August) 24-h sampling periods. Minnows appeared flexible in their choice of food items, concentrating their feeding on invertebrate taxa, such as emerging chironomid pupae, that were temporarily available, as well as on relatively large and vulnerable microcrustaceans, such as Daphnia. Adult males, larger than females and juveniles, consumed the amphipod Hyallela azteca to a greater extent than the two smaller-bodied groups. Patterns of habitat use and activity were also consistent with behavioral flexibility. Prior to the breeding season, when all three groups were abundant, the population displayed intraspecific differences in diel activity; adults were typically active at night, when chironomid pupae were most abundant, whereas juveniles were primarily day active. Later, as catches of males declined, spatial and temporal patterns of females and juveniles were similar and diet overlap was high. Characteristics of both the fish population and their prey interact to shape patterns of resource use in fathead minnows.

17

Pechmann, Joseph H. K., and Raymond D. Semlitsch. "Diel activity patterns in the breeding migrations of winter-breeding anurans." Canadian Journal of Zoology 64, no. 5 (May 1, 1986): 1116–20. http://dx.doi.org/10.1139/z86-167.

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Diel activity patterns in the breeding migrations of four winter-breeding anurans (Hyla crucifer, Pseudacris nigrita, Pseudacris ornata, and Rana utricularia) were examined at a breeding pond in South Carolina, U.S.A., using a terrestrial drift fence with pitfall traps. Traps were censused at 0600, 1200, 1800, and 2400 during six 24-h periods from 1982 through 1984. Census dates were selected during which the weather was expected to remain uniformly warm and rainy throughout all four time intervals. This allowed us to separate the effect of time of day on migratory activity from the effects of temperature and rainfall. There were significant differences in migratory activity among time intervals, but no significant differences among time intervals in either mean air temperature or rainfall. Males and females of all four species migrated to and from the pond primarily during the two night intervals. The absence of daylight appears to be a necessary trigger for migratory behavior in these anurans. Temperature and moisture conditions often limit their breeding migrations, and the failure to utilize suitable diurnal weather conditions represents an additional constraint. We suggest that the observed diel pattern of migratory activity may be an adaptation to avoid visual predators.

18

Kelly, Michael L., Errol R. P. Murray, Caroline C. Kerr, Craig A. Radford, Shaun P. Collin, John A. Lesku, and Jan M. Hemmi. "Diverse Activity Rhythms in Sharks (Elasmobranchii)." Journal of Biological Rhythms 35, no. 5 (June 11, 2020): 476–88. http://dx.doi.org/10.1177/0748730420932066.

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Sharks are an interesting group of vertebrates, as many species swim continuously to “ram” oxygen-rich seawater over their gills (ram ventilators), whereas other species “pump” seawater over their gills by manipulating buccal cavity volume while remaining motionless (buccal pumpers). This difference in respiratory physiology raises the question: What are the implications of these differences in lifestyle for circadian rhythms? We investigated the diel activity patterns of 5 species of sharks, including 3 ram ventilating species: the school shark ( Galeorhinus galeus), the spotted estuary smooth-hound ( Mustelus lenticulatus), and the spiny dogfish ( Squalus acanthias); and 2 buccal pumping species: the Port Jackson ( Heterodontus portusjacksoni) and draughtsboard ( Cephaloscyllium isabellum) sharks. We measured the amount, duration, and distance traveled while swimming over multiple days under a 12:12 light:dark light regime for all species and used modified light regimes for species with a clear diel rhythm in activity. We identified a surprising diversity of activity rhythms. The school shark and smooth-hound swam continuously; however, whereas the school shark swam at the same speed and covered the same distance during the day and night, the smooth-hound swam slower at night and traversed a shorter distance. A similar pattern was observed in the spiny dogfish, although this shark swam less overall. Both the Port Jackson and draughtsboard sharks showed a marked nocturnal preference for swimming. This pattern was muted and disrupted during constant light and constant dark regimes, although circadian organization of this pattern was maintained under certain conditions. The consequences of these patterns for other biological processes, such as sleep, remain unclear. Nonetheless, these 5 species demonstrate remarkable diversity within the activity rhythms of sharks.

19

Payne, NL, BM Gillanders, DM Webber, and JM Semmens. "Interpreting diel activity patterns from acoustic telemetry: the need for controls." Marine Ecology Progress Series 419 (November 30, 2010): 295–301. http://dx.doi.org/10.3354/meps08864.

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20

Alexander, Graham J., and Catherine L. Marshall. "Diel activity patterns in a captive colony of rinkhals,Hemachatus haemachatus." African Journal of Herpetology 47, no. 1 (January 1998): 29–32. http://dx.doi.org/10.1080/21564574.1998.9649997.

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21

Toobaie, A., J. W. Kim, I. J. Dolinsek, and J. W. A. Grant. "Diel activity patterns of the fish community in a temperate stream." Journal of Fish Biology 82, no. 5 (May 2013): 1700–1707. http://dx.doi.org/10.1111/jfb.12071.

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22

JAENSON, THOMAS G. T. "Diel activity patterns of blood-seeking anthropophilic mosquitoes in central Sweden." Medical and Veterinary Entomology 2, no. 2 (April 1988): 177–87. http://dx.doi.org/10.1111/j.1365-2915.1988.tb00068.x.

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23

Martin, Daniel J., Brock R. McMillan, John D. Erb, Thomas A. Gorman, and Daniel P. Walsh. "Diel activity patterns of river otters (Lontra canadensis) in southeastern Minnesota." Journal of Mammalogy 91, no. 5 (October 15, 2010): 1213–24. http://dx.doi.org/10.1644/09-mamm-a-083.1.

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24

Boda, Pál, and Zoltán Csabai. "Seasonal and diel flight activity patterns of aquatic Coleoptera and Heteroptera." SIL Proceedings, 1922-2010 30, no. 8 (January 2009): 1271–74. http://dx.doi.org/10.1080/03680770.2009.11923928.

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25

Kadar, Julianna, Monique Ladds, Johann Mourier, Joanna Day, and Culum Brown. "Acoustic accelerometry reveals diel activity patterns in premigratory Port Jackson sharks." Ecology and Evolution 9, no. 16 (July 27, 2019): 8933–44. http://dx.doi.org/10.1002/ece3.5323.

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26

Nixon, Asa J., and Samuel H. Gruber. "Diel metabolic and activity patterns of the lemon shark (Negaprion brevirostris)." Journal of Experimental Zoology 248, no. 1 (October 1988): 1–6. http://dx.doi.org/10.1002/jez.1402480102.

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27

Read, D. G. "Microhabitat separation and diel activity patterns of Planigale gilesi and P. tenuirostris (Marsupialia: Dasyuridae)." Australian Mammalogy 12, no. 2 (1989): 45. http://dx.doi.org/10.1071/am89008.

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Diel activity patterns and microhabitat use by the partially subterranean dasyurid marsupials Planigale gilesi and P. tenuirostris were studied in captivity. In the laboratory, a chamber was constructed that had a surface area and 'underground' cracks and cavities typical of the species' natural microhabitat. Infra-red light beams monitored the daily activity of individuals over 3 consecutive days under simulated photoperiods and temperatures typical of summer and winter. The larger species, P. gilesi, is more active than P. tenuirostris and, under summer conditions, is nocturnal; in winter it becomes more diurnal. Planigale tenuirostris is primarily nocturnal under summer and winter conditions. Both P. gilesi and P. tenuirostris exhibited short-term activity cycles that respectively, were: in summer 1 h 40 min and 1 h 25 min, and in winter 3 h 21 min and 2 h 56 min. Frequencies of activity bouts showed diel variations in P. gilesi but were constant in P. tenuirostris. Frequencies of rests showed diel variations in both species. Changes in total activity and in the proportion of surface-related activity are closely interrelated between P. gilesi and P. tenuirostris and may operate to reduce possible competitive interactions.

28

Stangel, Peter W., and Raymond D. Semlitsch. "Experimental analysis of predation on the diel vertical migrations of a larval salamander." Canadian Journal of Zoology 65, no. 6 (June 1, 1987): 1554–58. http://dx.doi.org/10.1139/z87-240.

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The effects of a predatory fish on diel vertical migrations of aquatic larvae of the salamander Ambystoma talpoideum were tested in artificial ponds. Associations between larval activity and water temperature and resource abundance were also examined. In the absence of fish, larval activity was associated with the onset of darkness and decreasing water temperature. Peak larval activity occurred at 2130, about 3.5 h after peak summer water temperatures. Resource abundance (zooplankton density) in the water column did not differ from day to night. Larvae were more active during the day in spring than in summer. The presence of a visually orienting fish predator restricted larval activity to the benthic layer. Our results suggest that the presence of a visually orienting predator can be a major factor affecting patterns of diel vertical migrations. Daily and seasonal changes in water temperatures may affect thermoregulatory behavior, thereby influencing diel vertical migration patterns.

29

Wang, Danfeng, Guang Yang, and Wenfeng Chen. "Diel and Circadian Patterns of Locomotor Activity in the Adults of Diamondback Moth (Plutella xylostella)." Insects 12, no. 8 (August 14, 2021): 727. http://dx.doi.org/10.3390/insects12080727.

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The Diamondback Moth (Plutella xylostella) is a highly destructive lepidopteran pest of cruciferous crops. However, there still is relatively little known about the locomotor activities of diel and the circadian patterns in P. xylostella. Here, we present an analysis of the diel locomotion of P. xylostella under several laboratory settings. We established a system for measuring the individual locomotor activities of P. xylostella and found that both males and females showed a nocturnal pattern of activity under 26 or 20 °C LD conditions, with activity peaking immediately after lights off and quickly declining after lights on. In addition, we showed that it is difficult to assess the free-running circadian rhythms of P. xylostella under 26 °C DD conditions. However, we found that males showed a higher power, rhythm index (RI) and rhythmic ratio than females under 20 °C DD conditions, which indicated that males in low-temperature conditions are much more suitable to study the free-running circadian rhythms of P. xylostella. The findings of this study will help us to have a better understanding of the diel activity of P. xylostella and may provide a foundation for the development of an effective pest management strategy.

30

Brady, Beth, Carly Sarbacker, Jake Andrew Lasala, Maria Maust-Mohl, Kristi Ashley Collom, Linda Searle, Laura J. May-Collado, and Eric Angel Ramos. "Manatees display diel trends in acoustic activity at two microhabitats in Belize." PLOS ONE 18, no. 11 (November 17, 2023): e0294600. http://dx.doi.org/10.1371/journal.pone.0294600.

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Many marine mammals exhibit diel trends in vocal production, which can provide information on habitat use and behavioral activity. In Belize, Antillean manatees (Trichechus manatus manatus) commonly inhabit small depressions in the substrate or deep-water coves known as “resting holes”. Determining if manatees exhibit diel temporal trends in their call production rate and call types between microhabitats can provide insights into their diurnal and nocturnal activity patterns. Here, we investigate the diel vocalization patterns of wild Antillean manatees in two adjacent resting holes off of St. George’s Caye, Belize. Recordings of manatees were made using a bottom-mounted hydrophone located near a reef barrier reef for nine days in July of 2017 and ten days in January of 2018. To explore if and how manatee acoustic activity differs between sites, we compared the number of calls per hour, the number of manatee positive hours, the number of tonal and atonal sounds, and the number of boats detected across sites. A total of 370 hours of acoustic recordings were analyzed resulting in the detection of 3,262 calls. There were no significant differences in the number of manatee calls produced per hour between sites. The average number of calls produced by manatees decreased over the course of several days. The proportion of tonal calls decreased with hours after sunset and increased in boat presence. These results suggest manatees in this region may exhibit different diel activity patterns which appear to be influenced by the characteristics of the environment. These findings can support ongoing conservation and management efforts to safeguard species in Belize.

31

Pereyra, L. C., M. S. Akmentins, E. A. Sanabria, and M. Vaira. "Diurnal? Calling activity patterns reveal nocturnal habits in the aposematic toad Melanophryniscus rubriventris." Canadian Journal of Zoology 94, no. 7 (July 2016): 497–503. http://dx.doi.org/10.1139/cjz-2015-0197.

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In diurnal species with short breeding seasons, an extension of diel activity to the night hours could be favoured to maximize mating opportunities, but individuals must deal with physiological and behavioural constraints. We tested this hypothesis in the Yungas Red-belly Toad (Melanophryniscus rubriventris (Vellard, 1947)). We registered the diel pattern of male calling activity in two localities using automated recording systems, and related it to abiotic factors such as temperature, relative air humidity, and precipitation. The diel pattern of vocalization was mainly diurnal. Interestingly though, nocturnal calling activity was a common feature, representing between 40% and 43% of call records in both localities. Vocal activity was significantly influenced by time of the day and presence of rainfall. Calling males showed high plasticity, with activity in the entire environmental range of relative air humidity and temperature. Nocturnal calling seems to play an important role in the mating strategy of males, and it is probably more frequent in the genus Melanophryniscus than currently assumed. We discuss the implications of our findings in relation to different aspects of ecology of the species and suggest that bright colouration in M. rubriventris might result from a compromise between several nonconflicting functions (e.g., aposematism and thermoregulation).

32

Reebs, S. G., L. Boudreau, P. Hardie, and R. A. Cunjak. "Diel activity patterns of lake chubs and other fishes in a temperate stream." Canadian Journal of Zoology 73, no. 7 (July 1, 1995): 1221–27. http://dx.doi.org/10.1139/z95-146.

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Baited and unbaited minnow traps were set in Catamaran Brook and the Little Southwest Miramichi River, New Brunswick, and checked every 4 h to determine the diel activity pattern of four species of stream-dwelling fish (threespine stickleback (Gasterosteus aculeatus), juvenile white sucker (Catostomus commersoni), blacknose dace (Rhinichthys atratulus), and lake chub (Couesius plumbeus)). Secondary goals were to determine whether the presence of bait inside minnow traps affected the diel patterns of captures and to compare patterns of lake chub captures in minnow traps with movement through a nearby fish-counting fence. All fish except lake chubs were diurnal, although strict diurnality was less obvious when bait was present in the traps. Lake chubs, which are normally diurnal in the laboratory, were captured mostly near dawn or dusk in unbaited traps, throughout the day in baited traps, and mostly at night at the fish-counting fence. We infer that chubs are active mostly at dawn or dusk, except (i) when strong food cues are present, in which case their activity may extend into the day, and (ii) during the spawning migration, when they move mostly at night. Relative inactivity by chubs during the day may be caused by the presence of piscivorous birds such as kingfishers and common mergansers, whose hunting efficiency may be higher under brighter light.

33

Bahamon, Nixon, Francesc Sardà, and Jacopo Aguzzi. "Fuzzy diel patterns in catchability of deep-water species on the continental margin." ICES Journal of Marine Science 66, no. 10 (July 8, 2009): 2211–18. http://dx.doi.org/10.1093/icesjms/fsp190.

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Abstract Bahamon, N., Sardà, F., and Aguzzi, J. 2009. Fuzzy diel patterns in catchability of deep-water species on the continental margin. – ICES Journal of Marine Science, 66: 2211–2218. Exploited deep-water fish communities on continental margins are poorly understood in terms of variations in species composition and abundance by depth and season as a response to diel changes in light intensity and length of photoperiod. Innovative fuzzy clustering and traditional agglomerative hierarchical clustering methods were applied to data from bottom trawls collected continuously for 4 d in October and June, on the shelf (100–110 m) and upper slope (400–430 m). Fuzzy clustering was more effective than hierarchical clustering at characterizing diel variations in catches from the upper slope because the species assemblage did not show a distinct day and night structure. On the shelf, the species assemblages shifted abruptly between a diurnal and a nocturnal structure at sunset and sunrise, and the two clustering methods yielded similar results. Endobenthic decapods with marked crepuscular-nocturnal emergence from the substratum were mostly responsible for this pattern. No clearly discernible diel pattern was found with the dampening of light intensity with depth, weakening the behavioural response of endobenthos to the day–night cycle. The results indicated that the regulatory effect of the light cycle on diel activity rhythms weakens with depth.

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Wellman, Sara T., and James M. Haynes. "Diel Activity Patterns of Mink, Neovison vison, Change with Habitat." Canadian Field-Naturalist 123, no. 4 (October 1, 2009): 368. http://dx.doi.org/10.22621/cfn.v123i4.1005.

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Using video traps, we tested the commonly held view that Mink, Neovison vison, are mostly nocturnal. We compared Mink passages during daylight and darkness in two habitats. Mink were significantly more nocturnal in uplands with streams and significantly more diurnal in wetlands. Assuming that uplands have a higher proportion of terrestrial prey active at night and wetlands have a higher proportion of aquatic prey, the observed difference in activity periods may be related to the difficulty of seeing aquatic prey at night and suggests a dynamic interaction between food visibility and diel activity in Mink.

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SMITH, GEOFFREY R., and JOHN B. IVERSON. "Diel Activity Patterns of the Turtle Assemblage of a Northern Indiana Lake." American Midland Naturalist 152, no. 1 (July 2004): 156–64. http://dx.doi.org/10.1674/0003-0031(2004)152[0156:dapott]2.0.co;2.

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Ould Ely, Sidi, Peter G. N. Njagi, Magzoub Omer Bashir, Salah El-Tom El-Amin, and Ahmed Hassanali. "Diel Behavioral Activity Patterns in Adult Solitarious Desert Locust,Schistocerca gregaria(Forskål)." Psyche: A Journal of Entomology 2011 (2011): 1–9. http://dx.doi.org/10.1155/2011/459315.

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The responses of adult solitarious desert locust to odors from a host plant were evaluated in a two-choice wind tunnel. Solitarious desert locusts collected from the field (Red Sea Coast) were more attracted to volatiles from pottedHeliotropium ovalifoliumin scotophase than in photophase. The attraction towards the host plant odors rather than to clean air, in both photophase and scotophase, concurs with previous observations on oviposition preferences near these plants. Diel behavioral activity patterns of adult solitarious desert locustsSchistocerca gregaria(Forskål) that were collected from the field in Port Sudan were investigated by monitoring, scanning, resting, taking off, and walking/running in a wind tunnel. Solitarious locusts that had been propagated in the laboratory for 20 generations were also observed for comparison. In both groups of locusts, insects were significantly more active after sunset and this activity attained peak level at 1-2 hours after dusk. Of the two groups, solitarious locusts collected from the field were significantly more active. In the scotophase, the former traversed distances that were about seven times those covered by laboratory-reared locusts. Overall, the results show that the repertoire of behavioral activities of solitarious locusts is maintained in laboratory-reared insects, albeit at a lower level. The implications of these observations in the behavioral ecology of the desert locust are discussed.

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Primavera, Jurgenne H., and MA Junemie Hazel L. Lebata. "Size and diel differences in activity patterns ofMetapenaeus ensis, penaeus latisulcatusandP. merguiensis." Marine and Freshwater Behaviour and Physiology 33, no. 3 (August 2000): 173–85. http://dx.doi.org/10.1080/10236240009387089.

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Linner, J., E. Brannas, B. S. Wiklund, and H. Lundqvist. "Diel and seasonal locomotor activity patterns in Arctic charr, Salvelinm alpinus (L.)." Journal of Fish Biology 37, no. 5 (November 1990): 675–85. http://dx.doi.org/10.1111/j.1095-8649.1990.tb02532.x.

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Corkran, Julie L., and Conrad E. Wickstrom. "Diel patterns of nitrogenase activity associated with macrophytes in a Eutrophic Lake." Aquatic Botany 28, no. 3-4 (August 1987): 341–52. http://dx.doi.org/10.1016/0304-3770(87)90010-6.

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Diete, Rebecca L., Paul D. Meek, Christopher R. Dickman, Allan Lisle, and Luke K. P. Leung. "Diel activity patterns of northern Australian small mammals: variation, fixity, and plasticity." Journal of Mammalogy 98, no. 3 (February 10, 2017): 848–57. http://dx.doi.org/10.1093/jmammal/gyx003.

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Elliott, J. M. "Contrasting diel activity and feeding patterns of four species of carnivorous stoneflies." Ecological Entomology 25, no. 1 (February 2000): 26–34. http://dx.doi.org/10.1046/j.1365-2311.2000.00229.x.

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Ottesen, Preben S. "Diel activity patterns of South Scandinavian high mountain ground beetles (Coleoptera, Carabidae)." Ecography 8, no. 3 (October 1985): 191–203. http://dx.doi.org/10.1111/j.1600-0587.1985.tb01170.x.

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Lennox-Bulow, Danica, Robert Courtney, Brendan Ebner, and Jamie Seymour. "Diel activity patterns and habitat preferences of stonefish (Synanceia spp.) in captivity." Memoirs of the Queensland Museum – Nature 65 (2024): 1–7. http://dx.doi.org/10.17082/j.2204-1478.65.2024.2023-04.

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Synanceia verrucosa (reef stonefish) and Synanceia horrida (estuarine stonefish) are known as the world’s most venomous fishes. However, little is known about their habitat preference and activity patterns. This study aimed to determine the habitat preferences and diel activity patterns of stonefish. The movements of four adults of each species that were offered complex and simple habitats in captivity were recorded by filming during day and night periods. Generally, both species exhibited similar behaviour, though S. verrucosa travelled further per movement than S. horrida. Collectively, stonefish spent 94% of their time associated with complex habitat and moved significantly less frequently on complex (1.6 movements per hour) relative to simple habitat (17.3 movements per hour). Stonefish were least active around sunset in the late afternoon and evening, which may relate to an active feeding period during the morning or paradoxically to a higher probability of ambush feeding success near sunset. These findings have enhanced our current understanding of the ecology of these species.

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Sandoval-Serés, Elisa, Khiavett Sánchez-Pinzón, and Rafael Reyna-Hurtado. "Waterhole use and diel activity pattern of ocelots in Calakmul rainforest, Mexico." Revista Mexicana de Biodiversidad 93 (September 30, 2022): e933930. http://dx.doi.org/10.22201/ib.20078706e.2022.93.3930.

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We aimed to evaluate the temporal and spatial use of waterholes by ocelots in Calakmul Biosphere Reserve (CBR), Mexico. From 2014 to 2017, we monitored 11 waterholes with camera traps. We compared diel activity patterns with circular statistics depending on waterholes’ level of human intensity and distance to the Calakmul road, seasonality, and sex. We identified 40 different ocelots. Four waterholes were the most important ones, being 2 of them close to the road. Individuals took on average 19 days to return to waterholes. The diel activity of ocelots was 63.67% nocturnal, 20.70% crepuscular and 15.60% diurnal, and they were more diurnal in waterholes distant from the road. Their activity pattern was bimodal and it did not change between any of the categories tested. This is the first study to determine the spatial and temporal activity of ocelots in waterholes of Mexico. Ocelots are mainly nocturnal, and this pattern is conserved throughout CBR, however, they are able to adjust slightly their activity depending on extrinsic factors, such as an increased human presence. In the Calakmul region, all waterholes are crucial, and we particularly emphasize the conservation of the most important waterholes for ocelots, especially the ones close to the road.

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DeGregorio, Brett A., Jinelle H. Sperry, Daniel P. Valente, and Patrick J. Weatherhead. "Facultative nocturnal behaviour in snakes: experimental examination of why and how with Ratsnakes (Elaphe obsoleta) and Racers (Coluber constrictor)." Canadian Journal of Zoology 92, no. 3 (March 2014): 229–37. http://dx.doi.org/10.1139/cjz-2013-0255.

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Diel activity patterns are often fixed within species such that most animals can be classified as diurnal, crepuscular, or nocturnal, and have sensory abilities that reflect when they are active. However, many snake species appear capable of switching between diurnal and nocturnal activity. Here, we evaluate the hypothesis that some species are constrained in their activity by the sensory cues used for foraging. We experimentally assessed differences between two sympatric snake species in their ability to alter diel activity patterns, to address why those snakes that switch do so (do thermal constraints force them to be active in otherwise nonpreferred conditions?), and to explore how sensory abilities to locate prey facilitate or constrain this shift. Ratsnakes (Elaphe obsoleta (Say in James, 1823)) were active when temperature was optimal, regardless of light level, suggesting their activity pattern is genuinely plastic. Consistent with our predictions, Ratsnakes successfully detected prey in low and high light using visual or chemical cues, and were most successful when cues were coupled. Racers (Coluber constrictor L., 1758) were almost exclusively diurnal, regardless of temperature, and became less active when daytime temperatures were suboptimal. The ability of Ratsnakes to shift activity may confer a foraging advantage and should buffer Ratsnakes and similarly flexible species from climate change, whereas climate change may pose a more serious threat to inflexible species such as Racers.

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Wang, Kai, and Xiaozhen Mou. "Coordinated Diel Gene Expression of Cyanobacteria and Their Microbiome." Microorganisms 9, no. 8 (August 5, 2021): 1670. http://dx.doi.org/10.3390/microorganisms9081670.

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Diel rhythms have been well recognized in cyanobacterial metabolisms. However, whether this programmed activity of cyanobacteria could elicit coordinated diel gene expressions in microorganisms (microbiome) that co-occur with cyanobacteria and how such responses in turn impact cyanobacterial metabolism are unknown. To address these questions, a microcosm experiment was set up using Lake Erie water to compare the metatranscriptomic variations of Microcystis cells alone, the microbiome alone, and these two together (whole water) over two day-night cycles. A total of 1205 Microcystis genes and 4779 microbiome genes exhibited significant diel expression patterns in the whole-water microcosm. However, when Microcystis and the microbiome were separated, only 515 Microcystis genes showed diel expression patterns. A significant structural change was not observed for the microbiome communities between the whole-water and microbiome microcosms. Correlation analyses further showed that diel expressions of carbon, nitrogen, phosphorous, and micronutrient (iron and vitamin B12) metabolizing genes were significantly coordinated between Microcystis and the microbiome in the whole-water microcosm. Our results suggest that diel fluxes of organic carbon and vitamin B12 (cobalamin) in Microcystis could cause the diel expression of microbiome genes. Meanwhile, the microbiome communities may support the growth of Microcystis by supplying them with recycled nutrients, but compete with Microcystis for iron.

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Cervino, Nadia G., Agustín J. Elias-Costa, Martín O. Pereyra, and Julián Faivovich. "A closer look at pupil diversity and evolution in frogs and toads." Proceedings of the Royal Society B: Biological Sciences 288, no. 1957 (August 18, 2021): 20211402. http://dx.doi.org/10.1098/rspb.2021.1402.

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The eyes of frogs and toads (Anura) are among their most fascinating features. Although several pupil shapes have been described, the diversity, evolution, and functional role of the pupil in anurans have received little attention. Studying photographs of more than 3200 species, we surveyed pupil diversity, described their morphological variation, tested correlation with adult habits and diel activity, and discuss major evolutionary patterns considering iris anatomy and visual ecology. Our results indicate that the pupil in anurans is a highly plastic structure, with seven main pupil shapes that evolved at least 116 times during the history of the group. We found no significant correlation between pupil shape, adult habits, and diel activity, with the exception of the circular pupil and aquatic habits. The vertical pupil arose at least in the most-recent common ancestor of Anura + Caudata, and this morphology is present in most early-diverging anuran clades. Subsequently, a horizontal pupil, a very uncommon shape in vertebrates, evolved in most neobatrachian frogs. This shape evolved into most other known pupil shapes, but it persisted in a large number of species with diverse life histories, habits, and diel activity patterns, demonstrating a remarkable functional and ecological versatility.

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Moe, T. F., J. Kindberg, I. Jansson, and J. E. Swenson. "Importance of diel behaviour when studying habitat selection: examples from female Scandinavian brown bears (Ursus arctos)." Canadian Journal of Zoology 85, no. 4 (April 2007): 518–25. http://dx.doi.org/10.1139/z07-034.

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The goal of habitat selection studies is to identify important habitats for a particular species. However, most studies using radiotelemetry have focused on habitat-selection patterns using daytime positions only. We used 24 h data from six female brown bears ( Ursus arctos L., 1758) equipped with GPS–GSM collars and activity loggers to analyse variations in habitat selection related to diel variations in activity (foraging and resting). We found that the bears rested mainly during the daylight hours and foraged mainly during the crepuscular and nocturnal hours. The bears selected habitats differently when they were resting than when they were foraging. We found no selection for tall coniferous forest using all data, but this habitat was selected by resting bears and avoided by foraging bears. Thus, for studies of habitat selection, our results show the importance of obtaining data from all 24 h and dividing these data into relevant categories based on the diel activity pattern of the studied species.

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Sorrell, GeoffreyG. "Diel Movement and Predation Activity Patterns of the Eyelash Palm-Pitviper (Bothriechis schlegelii)." Copeia 2009, no. 1 (February 23, 2009): 105–9. http://dx.doi.org/10.1643/ce-06-284.

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Lundgren, Jonathan G., Sharon Nichols, Deirdre A. Prischmann, and Michael M. Ellsbury. "Seasonal and diel activity patterns of generalist predators associated withDiabrotica virgiferaimmatures (Coleoptera: Chrysomelidae)." Biocontrol Science and Technology 19, no. 3 (March 2009): 327–33. http://dx.doi.org/10.1080/09583150802696533.

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