Relevant bibliographies by topics / Juvenile survival

Academic literature on the topic 'Juvenile survival'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Juvenile survival"

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Webb, William C., William I. Boarman, and John T. Rotenberry. "Common Raven Juvenile Survival in a Human-Augmented Landscape." Condor 106, no. 3 (August 1, 2004): 517–28. http://dx.doi.org/10.1093/condor/106.3.517.

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AbstractAnthropogenic resource subsidies have contributed to the dramatic increase in the abundance of Common Ravens (Corvus corax) in the western Mojave Desert, California, during the past 30 years. To better understand the effects of these subsidies on raven demography, we examined whether survival to juvenile departure from the natal territory could be predicted by a set of environmental and morphological variables, such as nest proximity to anthropogenic resources and juvenile condition. We captured 240 juvenile ravens over 2 years and marked them prior to fledging. Nest proximity to anthropogenic resources and earlier fledging dates significantly predicted raven juvenile survival to departure from the natal territory. The best-fitting mark-recapture models predicted postdeparture survival as a function of time since fledging, nest proximity to anthropogenic resources, and year hatched. The positive effect of nest proximity to anthropogenic resources influenced postdeparture survival for at least 9 months after fledging, as revealed by the mark-recapture analysis. Annual survival was 47% for first-year, 81% for second-year, and 83% for third-year birds. Our results support the hypothesis that anthropogenic resources contribute to increasing raven numbers via increased juvenile survival to departure as well as increased postdeparture survival. We expect raven numbers to grow in concert with the growing human presence in the Mojave Desert unless raven access to anthropogenic resources is diminished.La Sobrevivencia Juvenil de Corvus corax en un Paisaje Mejorado por HumanosResumen. Los subsidios de recursos antropogénicos han contribuido al aumento dramático de la abundancia del cuervo Corvus corax en el occidente del desierto de Mojave durante los últimos 30 años. Para entender los efectos de estos subsidios en la demografía del cuervo, examinamos si la sobrevivencia hasta la salida de los juveniles del territorio natal podría ser predicha por un conjunto de variables morfológicas y ambientales, tales como su cercanía a los recursos antropogénicos y la condición de los juveniles. En dos años capturamos 240 cuervos juveniles y los marcamos antes que desarollaran plumas de vuelo. La cercanía del nido al punto de subsidio más cercano y las fechas tempranas de emplumamiento predijeron significativamente la sobrevivencia de los juveniles hasta su salida del teritorio natal. Los modelos de marcaje y recaptura más adecuados predijeron la sobrevivencia posterior a la salida del territorio como una función del tiempo desde el momento de emplumamiento, la cercanía al punto más cercano de subsidio y el año de nacimiento. Según el análisis de marcaje y recaptura, el efecto positivo de la cercanía a subsidios antropogénicos influye en la sobrevivencia después de la salida del territorio hasta por lo menos 9 meses después del emplumamiento. La sobrevivencia anual fue de 47% en el primer año, de 81% en el segundo año y de 83% para aves en su tercer año. Nuestros resultados apoyan la hipótesis de que los recursos antropogénicos contribuyen al crecimiento de los números de cuervos aumentando la sobrevivencia juvenil antes y después de su salida de los territorios natales. Esperamos que los números de cuervos aumenten en relación con la presencia humana en el desierto de Mojave a menos que su acceso a los recursos antropogénicos sea disminuido.
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Gillis, Elizabeth A. "Survival of juvenile hares during a cyclic population increase." Canadian Journal of Zoology 76, no. 10 (October 1, 1998): 1949–56. http://dx.doi.org/10.1139/z98-136.

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Snowshoe hares (Lepus americanus) are multilittered synchronous breeders that produce up to four distinct litters of young each summer. I used radiotelemetry to determine the effects of juvenile cohort (i.e., litter group) and food availability on postweaning survival of hares in the southwestern Yukon during the increase phase of a hare cycle. During the study, I monitored 86 juvenile hares from control areas and areas in which supplemental food was provided. Twenty-eight-day survival did not differ between food addition and control areas for any juvenile cohort, and survival rates of juveniles (all cohorts combined) did not differ significantly from those of adults (juveniles: 0.91 per 28 days; adults: 0.93 per 28 days). However, when examined by juvenile cohort, survival of third and fourth litters was significantly lower than that of adults and first and second litters. These differences were the result of differential survival among the juvenile cohorts during a 3-month period in the fall (September-November). Predation was the primary proximate cause of death for weaned juvenile hares, accounting for 86% of deaths.
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Gardali, Thomas, Daniel C. Barton, Jennifer D. White, and Geoffrey R. Geupel. "Juvenile and Adult Survival of Swainson's Thrush (Catharus Ustulatus) in Coastal California: Annual Estimates Using Capture-Recapture Analyses." Auk 120, no. 4 (October 1, 2003): 1188–94. http://dx.doi.org/10.1093/auk/120.4.1188.

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Abstract We estimated annual rates of survival for juvenile and adult Swainson's Thrushes (Catharus ustulatus) using capture-recapture analyses from 22 years of mist-neting data in coastal California (n= 2,651 individual captures). Our apparent survival estimate was 56% for adults and 25% for juveniles. We are the first to estimate an annual juvenile survival rate for a Neotropical migrant using capture-recapture probability estimates. Like most estimates of annual survival, we could not distinguish between dispersal away from our study area (which is likely high for juveniles) and mortality. Hence, survival is underestimated. However, our juvenile survival estimate did not include the period from fledging to independence, a time when mortality can be high. Many researchers have assumed juvenile survival to be half that of adult survival in population models (e.g. source-sink). Our juvenile to adult survival ratio was 45% (95% CI = 27 to 65%). We caution researchers from simply assuming that juvenile survival approximates half of adult survival when modeling populations and suggest using a range of values. Using a range of values is prudent because of the potential for annual variation, site-specific variation, and especially because estimates are imprecise or completely lacking.
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Spaan, Robert S., Clinton W. Epps, Rachel Crowhurst, Donald Whittaker, Mike Cox, and Adam Duarte. "Impact of Mycoplasma ovipneumoniae on juvenile bighorn sheep (Ovis canadensis) survival in the northern Basin and Range ecosystem." PeerJ 9 (January 19, 2021): e10710. http://dx.doi.org/10.7717/peerj.10710.

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Determining the demographic impacts of wildlife disease is complex because extrinsic and intrinsic drivers of survival, reproduction, body condition, and other factors that may interact with disease vary widely. Mycoplasma ovipneumoniae infection has been linked to persistent mortality in juvenile bighorn sheep (Ovis canadensis), although mortality appears to vary widely across subspecies, populations, and outbreaks. Hypotheses for that variation range from interactions with nutrition, population density, genetic variation in the pathogen, genetic variation in the host, and other factors. We investigated factors related to survival of juvenile bighorn sheep in reestablished populations in the northern Basin and Range ecosystem, managed as the formerly-recognized California subspecies (hereafter, “California lineage”). We investigated whether survival probability of 4-month juveniles would vary by (1) presence of M. ovipneumoniae-infected or exposed individuals in populations, (2) population genetic diversity, and (3) an index of forage suitability. We monitored 121 juveniles across a 3-year period in 13 populations in southeastern Oregon and northern Nevada. We observed each juvenile and GPS-collared mother semi-monthly and established 4-month capture histories for the juvenile to estimate survival. All collared adult females were PCR-tested at least once for M. ovipneumoniae infection. The presence of M. ovipneumoniae-infected juveniles was determined by observing juvenile behavior and PCR-testing dead juveniles. We used a known-fate model with different time effects to determine if the probability of survival to 4 months varied temporally or was influenced by disease or other factors. We detected dead juveniles infected with M. ovipneumoniae in only two populations. Derived juvenile survival probability at four months in populations where infected juveniles were not detected was more than 20 times higher. Detection of infected adults or adults with antibody levels suggesting prior exposure was less predictive of juvenile survival. Survival varied temporally but was not strongly influenced by population genetic diversity or nutrition, although genetic diversity within most study area populations was very low. We conclude that the presence of M. ovipneumoniae can cause extremely low juvenile survival probability in translocated bighorn populations of the California lineage, but found little influence that genetic diversity or nutrition affect juvenile survival. Yet, after the PCR+ adult female in one population died, subsequent observations found 11 of 14 ( 79%) collared adult females had surviving juveniles at 4-months, suggesting that targeted removals of infected adults should be evaluated as a management strategy.
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Dreitz, Victoria J., Wiley M. Kitchens, and Donald L. DeAngelis. "Effects of Natal Departure and Water Level on Survival of Juvenile Snail Kites (Rostrhamus Sociabilis) in Florida." Auk 121, no. 3 (July 1, 2004): 894–903. http://dx.doi.org/10.1093/auk/121.3.894.

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Abstract Survival rate from fledging to breeding, or juvenile survival, is an important source of variation in lifetime reproductive success in birds. Therefore, determining the relation-ship between juvenile survival and environmental factors is essential to understanding fitness consequences of reproduction in many populations. With increases in density of individuals and depletion of food resources, quality of most habitats deteriorates during the breeding season. Individuals respond by dispersing in search of food resources. Therefore, to understand the influence of environmental factors on juvenile survival, it is also necessary to know how natal dispersal influences survival of juveniles. We examined effects of various environmental factors and natal dispersal behavior on juvenile survival of endangered Snail Kites (Rostrhamus sociabilis) in central and southern Florida, using a generalized estimating equations (GEEs) approach and model selection criteria. Our results suggested yearly effects and an influence of age and monthly minimum hydrologic levels on juvenile Snail Kite survival. Yearly variation in juvenile survival has been reported by other studies, and other reproductive components of Snail Kites also exhibit such variation. Age differences in juvenile survival have also been seen in other species during the juvenile period. Our results demonstrate a positive relationship between water levels and juvenile survival. We suggest that this is not a direct linear relationship, such that higher water means higher juvenile survival. The juvenile period is concurrent with onset of the wet season in the ecosystem we studied, and rainfall increases as juveniles age. For management purposes, we believe that inferences suggesting increasing water levels during the fledging period will increase juvenile survival may have short-term benefits but lead to long-term declines in prey abundance and possibly wetland vegetation structure.
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Kershner, Eric L., Jeffery W. Walk, and Richard E. Warner. "Postfledging Movements and Survival of Juvenile Eastern Meadowlarks (Sturnella Magna) in Illinois." Auk 121, no. 4 (October 1, 2004): 1146–54. http://dx.doi.org/10.1093/auk/121.4.1146.

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Abstract The postfledging period is the least-studied stage of avian life cycles. Survival during this period has crucial effects on population dynamics. Survival of fledged young may be influenced by dispersal from their nest sites, because juveniles must cope with the hazards of novel environments. To better understand this important life stage, we used radiotelemetry techniques to study postfledging movements and survival of 50 juvenile Eastern Meadowlarks (Sturnella magna) at Prairie Ridge State Natural Area in Jasper County, Illinois, in 1999 and 2000. Juveniles began to move away from the nesting area in the third week after fledging. Most juveniles moved only 1–5 km from their birth site by the end of the study (90 days). Juvenile survival for the first 90 days after fledging was estimated as 56–69%. Mortality was greatest during the first week of the postfledging period, likely because of high rates of predation. Juvenile meadowlarks are flightless at fledging and thus are vulnerable to predators. We did not observe a second peak of mortality, as other studies have shown, at independence or when juveniles began to move away from their nest areas. The present study suggests that immediate postfledging movements may not be related to dispersal to future breeding sites, but rather occur in response to immediate needs for food resources and security from predators. Furthermore, the data suggest that presumed mortality patterns and estimated levels of juvenile survival are suspect; that interspecific variability of juvenile survival and postfledging movements may be considerable; and that detailed, longer-duration field studies are necessary to elucidate this important demographic period.
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Lougheed, Cecilia, Lynn W. Lougheed, Fred Cooke, and Sean Boyd. "Local Survival of Adult and Juvenile Marbled Murrelets and Their Importance for Estimating Reproductive Success." Condor 104, no. 2 (May 1, 2002): 309–18. http://dx.doi.org/10.1093/condor/104.2.309.

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Abstract Juvenile ratios estimated using numbers of hatch year (HY) and after-hatch-year (AHY) Marbled Murrelets (Brachyramphus marmoratus) counted concurrently during at-sea surveys have been used to estimate fecundity in this species. These “concurrent” juvenile ratios assume that HY birds remain in an area, and are likely biased because they do not account for potential differences in emigration rate of HY and AHY birds. We studied the emigration rates of adult and juvenile Marbled Murrelets marked with radio-transmitters. Juveniles had a high emigration rate compared to adults. The weekly local survival rate (ϕ) of newly radio-tagged HY birds was 27%. AHY local survival was 95% during incubation and early chick rearing, suggesting a resident population during the breeding season. We calculated juvenile ratios from 1996–1998 using (1) HY counts corrected for emigration and mean AHY counts around the breeding season peak, and (2) HY and AHY counts from concurrent at-sea surveys. The average “corrected” juvenile ratio (0.13 ± 0.05 SE) was higher than the “concurrent” juvenile ratio (0.04 ± 0.02 SE) but lower than estimates of fecundity from nest monitoring (0.18–0.22). Low juvenile ratios from at-sea surveys could result either from an unknown proportion of nonbreeding birds in the population, or, more likely, from differences in the at-sea distribution of AHY and HY birds. Fluctuation in the timing of the peak number of AHY birds across years might result in an uncorrectable bias in the counts. Because of biases and potential problems, caution is needed when interpreting juvenile ratios from at-sea surveys. Supervivencia Local de Brachyramphus marmoratus Adultos y Juveniles y su Importancia para Estimar Éxito Reproductivo Resumen. Utilizamos los cocientes entre individuos juveniles (nacidos en un año) y adultos (nacidos en años anteriores) de Brachyramphus marmoratus, censados simultáneamente durante conteos en el mar, para estimar la fecundidad de esta especie. Estos cocientes “simultáneos” de individuos asumen que los juveniles permanecen en una misma área, y podrían estar sesgados ya que no toman en cuenta diferencias en las tasas de migración de juveniles y adultos. Estudiamos las tasas de emigración de individuos juveniles y adultos de B. marmoratus marcados con radio-transmisores. Los juveniles tuvieron una tasa alta de emigración comparada con los adultos. La tasa de supervivencia local semanal (ϕ) para juveniles fue del 27%. La tasa de supervivencia local para adultos durante la incubación e inicio de la cría de polluelos fue del 95%, sugiriendo que se trata de una población residente durante la estación reproductiva. Calculamos el cociente entre juveniles y adultos para 1996–1998 utilizando (1) conteos de juveniles corregidos por emigración y promedio de adultos contados durante el pico de la estación reproductiva, y (2) juveniles y adultos contados simultáneamente durante los censos. El cociente “corregido” promedio entre juveniles a adultos (0.13 ± 0.05 EE) fue mayor que el cociente “simultáneo” (0.04 ± 0.02 EE) pero menor que las estimaciones de fecundidad obtenidas por medio del monitoreo de nidos (0.18–0.22). Los bajos cocientes obtenidos de conteos en el mar podrían explicarse por la presencia de una proporción desconocida de aves no-reproductivas en la población, o, más probablemente, por diferencias existentes en la distribución de juveniles y adultos en el mar. Fluctuaciones anuales en la sincronización del período pico de la estación reproductiva podrían introducir error a los conteos de adultos. Debido a estos sesgos y problemas potenciales, es importante interpretar con cautela los cocientes entre juveniles y adultos obtenidos de conteos en el mar.
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Kerr, Tricia D., Stan Boutin, Jalene M. LaMontagne, Andrew G. McAdam, and Murray M. Humphries. "Persistent maternal effects on juvenile survival in North American red squirrels." Biology Letters 3, no. 3 (March 29, 2007): 289–91. http://dx.doi.org/10.1098/rsbl.2006.0615.

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Maternal effects can have lasting fitness consequences for offspring, but these effects are often difficult to disentangle from associated responses in offspring traits. We studied persistent maternal effects on offspring survival in North American red squirrels ( Tamiasciurus hudsonicus ) by manipulating maternal nutrition without altering the post-emergent nutritional environment experienced by offspring. This was accomplished by providing supplemental food to reproductive females over winter and during reproduction, but removing the supplemental food from the system prior to juvenile emergence. We then monitored juvenile dispersal, settlement and survival from birth to 1 year of age. Juveniles from supplemented mothers experienced persistent and magnifying survival advantages over juveniles from control mothers long after supplemental food was removed. These maternal effects on survival persisted, despite no observable effect on traits normally associated with high offspring quality, such as body size, dispersal distance or territory quality. However, supplemented mothers did provide their juveniles an early start by breeding an average of 18 days earlier than control mothers, which may explain the persistent survival advantages their juveniles experienced.
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Mamuaya, Jimmy, Winda M. Mingkid, Ockstan J. Kalesaran, Hengky J. Sinjal, Reiny A. Tumbol, and John L. Tombokan. "The Survival Rate and Growth of Juvenile Crayfish (Cherax quadricarinatus) With Different Types of Shelter." JURNAL ILMIAH PLATAX 7, no. 2 (July 25, 2019): 427. http://dx.doi.org/10.35800/jip.7.2.2019.24510.

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An experiment was designed to assess the relative performance of three shelter types on the survival and growth of red-claw crayfish (Cherax quadricarinatus). A 13 days old juvenile crayfish with an average length of 10 mm were cultured in 400 ml water of glass bowl and were provided with one of 3 types of shelter over 19 days. The various shelter types assessed were dried coconut leaves, bamboo and Hydrilla. Juveniles in each bowl were fed with Artemia twice a day morning and in the afternoon. There was no significant effect (P>0.05) of shelter type on the survival rate; however, there was a significant effect (P<0.05) on growth with dried coconut leaves (5.33%) performing significantly better than Hydrilla (2.33%) and bamboo (2.00%). This experiment showed that the shelter types provided had a significant effect on the growth but not in their survival.Keywords: Survival rate, Growth, juvenile Cherax quadricarinatus, ShelterABSTRAKTujuan penelitian ini adalah untuk menganalisis sintasan hidup dan pertumbuhan juvenil lobster air tawar (C. quadricarinatus) dengan shelter yang berbeda. Juvenil lobster yang berumur 13 hari dengan panjang rata rata 10 mm dipelihara dalam wadah toples kaca dengan diberikan ketiga perlakuan selama 19 hari. Ketiga jenis perlakuan adalah daun kelapa kering, bambu dan Hydrilla. Juvenil diberi pakan Artemia 2 kali sehari yaitu pada pagi dan sore hari. Hasil penelitian menunjukkan ketiga perlakuan tidak berbeda nyata terhadap sintasan hidup (P>0.05), namun berbeda nyata (P< 0.05 ) untuk pertumbuhan dengan daun kelapa kering (5.33%), Hydrilla (2.33%) dan bambu (2%). Penelitian ini menunjukkan bahwa jenis shelter memberikan pengaruh nyata terhadap pertumbuhan namun tidak berbeda nyata untuk sintasan hidup.Kata kunci: Sintasan hidup, Pertumbuhan, Juvenil Cherax quadricarinatus, Shelter
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Munasik, Munasik, Suharsono Suharsono, J. Situmorang, and Kamiso H. N. "Kerapatan dan Kelulushidupan pada Rekrutmen Karang Pocillopora damicornis (Density and Survivorship on the Recruitment of the brooding coral Pocillopora damicornis)." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 19, no. 3 (September 2, 2014): 171. http://dx.doi.org/10.14710/ik.ijms.19.3.171-180.

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Studi rekrutmen karang Pocillopora damicornis telah dilakukan dengan mengamati kerapatan juvenil pada substrat penempelan di dataran terumbu Pulau Panjang, Jepara, Jawa Tengah. Hasil menunjukkan bahwa rekrutmen terjadi sepanjang tahun dan tertinggi pada periode Agustus-Oktober. Laju rekrutmen karang di belakang terumbu (back reef) pada sisi bawah angin (selatan) lebih tinggi daripada di sisi atas angin (utara) Pulau Panjang, tampaknya hal ini berkorelasi dengan kerapatan populasi karang dewasanya. Kerapatan juvenil karang tertinggi pada substrat batu alam terjadi pada sisi bawah permukaan substrat, akan tetapi pertumbuhan juvenil karang tertinggi ditemukan di sisi atas permukaan substrat. Hal ini mengindikasikan bahwa kerapatan juvenil karang berhubungan dengan kelulusan hidup juvenil karang. Semakin tinggi kerapatan juvenil karang P. damicornis maka semakin rendah kelulusan hidup juvenil karang karena terjadinya peningkatan persaingan sesama juvenil karang dan akibat kekurangan cahaya. Kata kunci: rekrutmen, kerapatan, kelulushidupan, karang Pocillopora damicornis Recruitment of the brooding coral Pocillopora damicornis was studied by observing the juvenile density on the settlement plate substrate in reef flat of Panjang Island, Jepara, Central Java. The results show that recruitment occurs throughout the year and the highest in the period from August to October. The rate of recruitment of coral reefs in back reef on the leeward (south) is higher than on the windward (north) of the island, it seems to be correlated with population density of adult corals. The highest density of juvenile corals on natural substrata occurs on the lower side surface of the substrate, but the highest growth of juvenile are found on the upper side surface of the substrate. This indicates that the density of juvenile corals associated with the survival of juvenile corals. The higher density of juvenile corals P. damicornis, the lower the survival of juvenile corals due to an increase in competition among juvenile corals and due to lack of light. Keywords: recruitment, density, survivorship, coral Pocillopora damicornis
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Dissertations / Theses on the topic "Juvenile survival"

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Smith, Cyndi. "Survival and recruitment of juvenile Harlequin Ducks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0023/MQ51472.pdf.

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Anderson, Elizabeth Marie. "Survival and behaviour of juvenile red squirrels, Tamiasciurus hudsonicus." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ47002.pdf.

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Rash, Jacob Michael. "Comparative Ecology of Juvenile Striped Bass and Juvenile Hybrid Striped Bass in Claytor Lake, Virginia." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9850.

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Since the introduction of hybrid striped bass M. chrysops x M. saxatilis to Claytor Lake, Virginia in 1993, relative abundance of striped bass Morone saxatilis has dropped disproportionately to stocking density. Potentially deleterious interactions between the two fishes that may limit recruitment to age 1 were considered in terms of trophic relationships, physiological indices of health, overwinter survival, and post-stocking predation. Both fishes preferred habitat types characterized by structure-free sand or gravel substrates, but striped bass and hybrid striped bass did not exhibit significant diet overlap during the growing season. At a total length of approximately 120 mm, the juvenile moronids shifted from a mixed diet of zooplankton and invertebrates to a diet comprised primarily of age-0 fishes. However, after becoming piscivorous striped bass preyed primarily upon age-0 alewife Alosa pseudoharengus, while hybrid striped bass consumed age-0 sunfishes. Striped bass achieved mean total lengths of 229 and 173 mm by the end of the growing season in 2001 and 2002, respectively. Stocked into the reservoir three months later than striped bass, mean hybrid striped bass total lengths reached 133 mm at the end of the 2002 growing season. Condition factor, relative weight, and lipid index values were low, but nearly equivalent for both striped bass and hybrid striped bass throughout this study. Overwinter starvation of smaller (< 150 mm total length) striped bass was observed for the 2001-2002 sampling season. Predation upon stocked fingerlings was not considered significant in limiting juvenile survival; only three fingerling moronids were found in the examination of stomach contents of 200 potential predators captured near stocking sites. It does not appear that resource competition with hybrid striped bass during the growing season resulted in increased overwinter mortality of juvenile striped bass. Delayed stocking of hybrid striped bass lessens the potential for trophic competition between striped bass and hybrid striped bass at this early life-stage.
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Schulman, Jessica L. "Habitat Complexity as a Determinant of Juvenile Blue Crab Survival." W&M ScholarWorks, 1996. https://scholarworks.wm.edu/etd/1539617703.

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Hovel, Kevin. "The effect of seagrass habitat fragmentation on juvenile blue crab survival." W&M ScholarWorks, 1999. https://scholarworks.wm.edu/etd/1539616700.

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Habitat fragmentation leads to small, isolated habitat patches in which ecological processes may differ substantially from those in larger, continuous habitats. Seagrass is a structurally complex but fragmented subtidal habitat that serves as a refuge from predation for juveniles of the blue crab, Callinectes sapidus Rathbun. I compared the effects of eelgrass ( Zostera marina L.) patch size and shoot density on juvenile blue crab survival both before (June) and after (September) shoot defoliation and cownose ray disturbance changed eelgrass habitat, and used artificial seagrass to determine the influence of eelgrass patch size on juvenile blue crab survival in the absence of covarying shoot density. Under natural conditions, eelgrass patch size, eelgrass shoot density and density-dependent cannibalism all influenced juvenile blue crab survival, but crab survival varied temporally. Crab survival was inversely correlated with eelgrass patch size in the absence of covarying shoot density, in contrast to patterns typically observed in fragmented terrestrial landscapes; this was likely due to low predator abundance in small patches. I tested the hypothesis that crab survival is maximized at an intermediate level of seagrass fragmentation due to the inverse relationship between crab survival and patch size by modeling the joint effects of patch size and proportional cover on juvenile blue crab survival. When I assumed predation on crabs to be independent of crab density, maximal crab survival (ca. 34%) occurred at intermediate values of seagrass fragmentation. Approximately 18% of crabs survived irrespective of the proportion of the landscape covered by seagrass when crab survival was assumed to be density-dependent. My findings indicate that (i) effects of habitat fragmentation on survival may differ between seagrass and terrestrial landscapes, (ii) seagrass habitat fragmentation has a significant but not overriding influence on faunal survival, and (iii) seagrass patch size, seagrass complexity, and blue crab density all influence juvenile blue crab survival, but their effects vary temporally. Habitat fragmentation studies should incorporate multiple scales of space and time, as well as potentially confounding environmental variables.
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Hylton, Rebecca A. "Survival, movement patterns, and habitat use of juvenile wood storks, Mycteria americana." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0007007.

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Parker, Michael W. "Impact of adventure interventions on traditional counseling interventions /." Full-text version available from OU Domain via ProQuest Digital Dissertations, 1992.

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Kerr, Tricia D. "Direct and indirect energetic influences on juvenile red squirrel survival, recruitment, and reproduction." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99189.

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This thesis evaluates how developmental conditions influence settlement, survival, and yearling primiparity in juvenile red squirrels. This was accomplished by comparing the fates of offspring from food supplemented versus non-supplemented mothers, and by using logistic regression to evaluate the effects of body mass, resource availability, and reproductive parameters on juvenile success. Maternal nutrition, previous and present year's cone production, and body mass contributed significantly to settlement and survival during all juvenile life history stages (emergence, settlement, and overwinter survival). Heavier than average juveniles were also more likely to reproduce as yearlings. Nevertheless, natal body mass was not a predictor of recruitment, indicating persistent influence of early developmental conditions on life history fates above and beyond mass effects. A greater impact of resource availability than body size on fitness among red squirrels may reflect this species' reliance on hoarded food rather than body fat for energy reserves.
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Semones, John David. "Consequences of nesting date on nesting success and juvenile survival in white ibis." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000784.

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Fenton, Jenny. "Post-Release Survival and Habitat Utilization of Juvenile Swordfish in the Florida Straits." NSUWorks, 2012. http://nsuworks.nova.edu/occ_stuetd/191.

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The use of pop-up satellite archival tags (PSATs) eliminates many of the limitations associated with acoustic and conventional tags by using fishery-independent data collection and retrieval. Previous research techniques have provided information on longer-term movements, migrations, and behavior patterns, but there is still a need for additional tagging studies using tags with depth and light data and increased memory that will further define the short-duration activity patterns and habitat utilization of juvenile swordfish in the western North Atlantic. PSATs have been successfully used on other large pelagic fishes, but have yet to be used on juvenile swordfish. This study investigated two main topics: a) the post-release survival rates of juvenile swordfish after being released from the recreational rod-and-reel fishery and commercial swordfish buoy gear fishery in the Florida Straits, and b) the habitat utilization of juvenile swordfish following release. High-resolution PSAT technology was used to estimate the post-release survival of 16 individual juvenile swordfish captured with standard recreational or buoy fishing gear and techniques in the southeast Florida swordfish fishery. Analysis of release mortality estimates was done using the “Release Mortality” Program. Five of the fourteen reporting tags showed a mortality within 48 hours, for a release mortality rate of 35.7%. However, no common thread could be found among the five mortalities. Results of the Release Mortality program indicated that if the true mortality rate was 35.7%, approximately 1800 tags would have to be deployed to increase the precision of the mortality estimates to +/- 5% of the true value. The nine surviving fish varied in straight-line distance traveled and in direction, and could withstand a wide range of temperatures. A deterministic, periodic model was developed to fit to the data and describe the fishes’ habitat utilization. This model identified both diurnal and lunar signals in the data, confirming that juveniles do move vertically based on the daily cycle of the sun and the lunar cycle of the moon and that their diurnal movements are much greater than their lunar movements. The results of this study can be valuable to management practices in future stock assessments and decisions regarding mandatory release of undersized fish.
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Books on the topic "Juvenile survival"

1

Anderson, David J., 1958- author, ed. Predictors of juvenile survival in birds. Washington, D.C: the American Ornithologists' Union, 2013.

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America, Boy Scouts of. Survival. Irving, Tex: Boy Scouts of America, 1995.

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Institute, Pennsylvania Bar. Juvenile court survival kit: Practice and procedure. [Mechanicsburg, Pa.] (5080 Ritter Rd., Mechanicsburg 17055-6903): Pennsylvania Bar Institute, 2000.

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Antarctic survival. London: Macdonald, 1987.

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Survival skills. Tunbridge Wells: Ticktock Media, 2006.

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Military survival. Oxford: Raintree, 2012.

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Hodge, Susie. Mountain survival. Milwaukee: Gareth Stevens Pub., 2007.

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Hodge, Susie. Ocean survival. Milwaukee: Gareth Stevens Pub., 2007.

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Green, Jen. Extreme survival. Great Bardfield: Miles Kelly, 2010.

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Survival! Desert. Huntington Beach, CA: Teacher Created Materials, 2012.

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Book chapters on the topic "Juvenile survival"

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Van Dijk, Catherine, Els Dumortier, and Christian Eliaerts. "Survival of the Protection Model? Competing Goals in Belgian Juvenile Justice." In International Handbook of Juvenile Justice, 187–223. New York, NY: Springer New York, 2006. http://dx.doi.org/10.1007/978-0-387-09478-6_8.

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Van Dijk, Catherine, Els Dumortier, and Christian Eliaerts. "Survival of the Protection Model? Competing Goals in Belgian Juvenile Justice." In International Handbook of Juvenile Justice, 187–223. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-4970-6_8.

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Murti, Lata. "Embodying Institutional Intersections: Juvenile School Educators as Agents of Survival." In Gender, Race, and Class in the Lives of Today’s Teachers, 249–67. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73551-7_23.

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Hong, Shuigen, Xian Zhang, Yingjun Zhao, Yongzhuang Xie, Yunwu Zhang, and Huaxi Xu. "Effect of Sediment Type on Growth and Survival of Juvenile Horseshoe Crabs (Tachypleus tridentatus)." In Biology and Conservation of Horseshoe Crabs, 535–40. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-89959-6_34.

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Carmichael, Ruth H., Emily Gaines, Zacharia Sheller, Amanda Tong, Amanda Clapp, and Ivan Valiela. "Diet Composition of Juvenile Horseshoe Crabs: Implications for Growth and Survival of Natural and Cultured Stocks." In Biology and Conservation of Horseshoe Crabs, 521–34. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-89959-6_33.

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Walzer, A., M. Castagnoli, S. Simoni, M. Liguori, E. Palevsky, and P. Schausberger. "Identification of a drought-adapted Neoseiulus californicus strain: egg hatchability, juvenile survival and oviposition at low humidities." In Trends in Acarology, 279–83. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9837-5_45.

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York, A. E. "Sea Surface Temperatures and Their Relationship to the Survival of Juvenile Male Northern Fur Seals from the Pribilof Islands." In Ecological Studies, 94–106. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76398-4_10.

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Spiga, Ilaria, Joe Fox, and Robert Benson. "Potential Effects of Long-Term Exposure to Boat Noise on the Growth, Survival, and Nutrient Retention in Juvenile Fish." In Advances in Experimental Medicine and Biology, 255–57. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-7311-5_56.

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Orell, Markku, and Kari Koivula. "Effects of Brood Size Manipulations on Adult and Juvenile Survival and Future Fecundity in the Willow Tit Parus Montanus." In Population Biology of Passerine Birds, 297–306. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75110-3_25.

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Schausberger, Peter. "Juvenile survival and development in Euseius finlandicus, Typhlodromus pyri and Kampimodromus aberrans (Acari: Phytoseiidae) feeding on con- and heterospecific immatures." In Ecology and Evolution of the Acari, 367–74. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-017-1343-6_26.

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Conference papers on the topic "Juvenile survival"

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Kearsley-Fleet, L., L. Vicente González, D. Steinke, R. Davies, D. De Cock, E. Baildam, M. W. Beresford, et al. "THU0586 Methotrexate drug survival and adverse effects in patients with juvenile idiopathic arthritis." In Annual European Congress of Rheumatology, EULAR 2018, Amsterdam, 13–16 June 2018. BMJ Publishing Group Ltd and European League Against Rheumatism, 2018. http://dx.doi.org/10.1136/annrheumdis-2018-eular.1276.

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Avila-Pedretti, M. G., Z. Morel, N. Cabrera, S. Cabrera-Villalba, I. Acosta Colman, P. Babak, P. Melgarejo, et al. "AB0454 Biological therapies survival in adults and juvenile onset arthritis. data from biobadaguay registry." In Annual European Congress of Rheumatology, EULAR 2018, Amsterdam, 13–16 June 2018. BMJ Publishing Group Ltd and European League Against Rheumatism, 2018. http://dx.doi.org/10.1136/annrheumdis-2018-eular.6652.

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Raupov, Rinat, Lubov Sorokina, Yuri Korin, Ilya Avrusin, Elizaveta Orlova, Ekaterina Gaidar, Margarita Dubko, et al. "AB1000 THE SURVIVAL OF METHOTREXATE IN JUVENILE IDIOPATHIC ARTHRITISCHILDREN AFTER DURING FIRST BIOLOGIC TREATMENT." In Annual European Congress of Rheumatology, EULAR 2019, Madrid, 12–15 June 2019. BMJ Publishing Group Ltd and European League Against Rheumatism, 2019. http://dx.doi.org/10.1136/annrheumdis-2019-eular.5233.

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Syukri, Muhammad, and Nurhikma Ramadhana. "The Effect of Stocking Density on The Growth and Survival Rate of Juvenile Seahorses (Hippocampus barbouri)." In International Conference on Environmental Awareness for Sustainable Development in conjunction with International Conference on Challenge and Opportunities Sustainable Environmental Development, ICEASD & ICCOSED 2019, 1-2 April 2019, Kendari, Indonesia. EAI, 2019. http://dx.doi.org/10.4108/eai.1-4-2019.2287201.

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Mustahal, Forcep Rio Indaryanto, Deri Hermawan, and Mas Bayu Syamsunarno. "Zeolite and Active Carbon Addition on Closed System Transportation for Milkfish Juvenile (Chanos chanos) Survival Rate." In 2nd and 3rd International Conference on Food Security Innovation (ICFSI 2018-2019). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/absr.k.210304.016.

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Kawan, I. Made, Semara Edi, and Dewa Sadguna. "Effect of Artificial Feed Feeding Engineering (pellets) on Survival Rate of Juvenile snakehead fish (Channa striata) on Adaptation in Happa Experiments." In Proceedings of the 3nd Warmadewa Research and Development Seminar, WARDS 2020, 21 December 2020, Denpasar-Bali, Indonesia. EAI, 2021. http://dx.doi.org/10.4108/eai.21-12-2020.2305838.

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Vilmos, Józsa, Jacek Kozłowski, Anna Zróbek-Sokolnik, Krzysztof Kozłowski, and Piotr Dynowski. "Classification of the Oxbow Lakes of the Hármas-Körös River and Determination of Ways for Further Exploiting the Various Water Regions in the Light of the Water Framework Directive." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.057.

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Hármas-Koros river lies between the mouth of the Tisza and the city Békés. In the nineteenth century, the work of regulatory her bed was made, which resulted in 44 oxbow lakes were created, of which 36 still exist till today. In presented work 14 oxbow lakes was selected and the following objectives were carried out: 1. The classification of oxbow lakes based on selected criteria: the manner and intensity of water exchange, sediment thickness, redox potential, usage, ichtiofouna. 2. The assessment of the state of spawning and its impact on ichtiofauna. 3. Determination the best methods of water management in particular types of oxbow lakes, which could stop their further degradation. The obtained results led to the following conclusions: - Tested oxbow lakes belong to different categories - Anthropogenic factors had a negative effect on the conditions of fish reproduction and survival of their juvenile stages. - The management of fisheries was not a factor differentiating the individual water regions, but had an impact on the ecological status. - For the maintenance and/or improvement of the natural environment of the individual oxbow lakes significant impact may have fishery management, carried out in the following years.
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Akhmedzhanova, A. B., S. V. Ponomarev, Y. V. Fedorovykh, and L. Y. Lagutkina. "THE CULTIVATION OF BELUGA (HUSO HUSO, (LINNAEUS, 1758)) JUVENILES IN CONDITIONS OF SERGIEVSKY STURGEON HATCHERY OF FGBU «GLAVRYBVOD»." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS Volume 2. DSTU-Print, 2020. http://dx.doi.org/10.23947/interagro.2020.2.427-430.

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The article presents data on the cultivation of Beluga stocking material, studies of the size indicators of embryos and morphometric indicators of Beluga larvae at different stages of development, analyzes of piscicultural- biological and hematological indicators. It was found that the Beluga juveniles reached the weight corresponding to the enlarged ones of sturgeon taking as standard at this enterprise. The survival rate was slightly higher than the norm.
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Lipinska, Joanna, Joanna Swidrowska-Jaros, Krystyna Wyka, and Elzbieta Smolewska. "FRI0562 CONCENTRATION OF SURVIVIN IN CHILDREN WITH JUVENILE IDIOPATHIC ARTHRITIS(JIA) – DIAGNOSTIC AND PROGNOSTIC VALUE." In Annual European Congress of Rheumatology, EULAR 2019, Madrid, 12–15 June 2019. BMJ Publishing Group Ltd and European League Against Rheumatism, 2019. http://dx.doi.org/10.1136/annrheumdis-2019-eular.7889.

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Ruud, T. E., W. Müller-Esterl, H. Fritz, J. O. Stadaas, and A. O. Aasen. "RELATIONS BETWEEN APROTININ CONCENTRATIONS AND HEMODYNAMICS IN EXPERIMENTAL ACUTE PANCREATITIS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644333.

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Acute pancreatitis (AP) was induced in juvenil pigs by injection of Na-taurocholate into the pancreatic duct. Eight animals remained untreated (group A), while 7 pigs (group B) received 60000 KIU/kg aprotinin (Tras-ylol, Bayer AG Leverkusen, West Germany) intravenously during 30 min before the induction of AP, thereafter 10000 KIU/kg/h during a 6 h observation period. Seven pigs (group C) received 60000 KIU/kg aprotinin during 30 min starting 3 h after the induction of AP, thereafter 10000 KIU/kg/h. The total infusion volume was the same in all 3 groups (5 ml/kg/h). Using an enzym-linked immunosorbent assay for aprotinin, maximum plasma concentration of aprotinin in group B was found 30 min after start of the infusion (2.8(1.9-5.4)umol/l). The aprotinin concentration thereafter remained elevated for the rest of the observation period (1.4(0.4-1.9) umol/1 after 6 h). The aprotinin concentration gradually increased in the peritoneal exudate during ongoing aprotinin infusion. After 1 h the aprotinin conc. in plasma and the exudate were within the same range. Similar results were observed in group C experiments, where the aprotinin conc. in plasma and peritoneal exudate both were approximately 2 umol/1 1 h after start of the infusion. Assayed by the chromogenic peptide substrate S-2302 (Kabi Vitrum AB, Stockholm, Sweden), markedly elevated values of plasma kallikrein inhibition were detected both in plasma and peritoneal exudate after start of aprotinin infusion in group B and C.In group A, 5 out of 8 animals died in a circulatory collapse, while the animals in group B and C remained hemodynamic stable and all survived the observation.Aprotinin concentrations of 1-3 umol/1 in plasma and peritoneal exudate improves the outcome during experimental acute pancreatitis in pigs.
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Reports on the topic "Juvenile survival"

1

Ham, K. D., J. J. Anderson, and J. A. Vucellck. Effect of multiple turbine passage on juvenile Snake River salmonid survival. Office of Scientific and Technical Information (OSTI), September 2005. http://dx.doi.org/10.2172/1218132.

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Ham, Kenneth D., James J. Anderson, and Jessica A. Vucelick. Effect of Multiple Turbine Passage on Juvenile Snake River Salmonid Survival. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/860427.

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Ploskey, Gene R., Mark A. Weiland, James S. Hughes, Shon A. Zimmerman, Robin E. Durham, Eric S. Fischer, Jina Kim, et al. Survival of Juvenile Chinook Salmon Passing the Bonneville Dam Spillway in 2007. Office of Scientific and Technical Information (OSTI), December 2008. http://dx.doi.org/10.2172/946673.

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Weiland, Mark A., Christa M. Woodley, Gene R. Ploskey, James S. Hughes, Matthew J. Hennen, Jin A. Kim, Zhiqun Deng, et al. Acoustic Telemetry Evaluation of Juvenile Salmonid Passage and Survival at John Day Dam, 2011. Office of Scientific and Technical Information (OSTI), June 2013. http://dx.doi.org/10.2172/1105102.

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Weiland, Mark A., Christa M. Woodley, Gene R. Ploskey, James S. Hughes, Jin A. Kim, Zhiqun Deng, Tao Fu, et al. Acoustic Telemetry Evaluation of Juvenile Salmonid Passage and Survival at John Day Dam, 2010. Office of Scientific and Technical Information (OSTI), May 2013. http://dx.doi.org/10.2172/1083415.

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Ploskey, Gene R., G. Batten, Aaron W. Cushing, Jin A. Kim, Gary E. Johnson, J. R. Skalski, Richard L. Townsend, et al. Survival and Passage of Juvenile Chinook Salmon and Steelhead Passing through Bonneville Dam, 2011. Office of Scientific and Technical Information (OSTI), February 2013. http://dx.doi.org/10.2172/1178913.

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Ploskey, Gene R., Mark A. Weiland, Derrek M. Faber, Zhiqun Deng, Gary E. Johnson, James S. Hughes, Shon A. Zimmerman, et al. Survival Rates of Juvenile Salmonids Passing Through the Bonneville Dam and Spillway in 2008. Office of Scientific and Technical Information (OSTI), December 2009. http://dx.doi.org/10.2172/971109.

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Ploskey, Gene R., Mark A. Weiland, James S. Hughes, Christa M. Woodley, Zhiqun Deng, Thomas J. Carlson, Jin A. Kim, et al. Survival and Passage of Juvenile Chinook Salmon and Steelhead Passing Through Bonneville Dam, 2010. Office of Scientific and Technical Information (OSTI), September 2012. http://dx.doi.org/10.2172/1057841.

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Ploskey, Gene R., Mark A. Weiland, James S. Hughes, Christa M. Woodley, Zhiqun Deng, Thomas J. Carlson, Jin A. Kim, et al. Survival and Passage of Juvenile Chinook Salmon and Steelhead Passing through Bonneville Dam, 2010. Office of Scientific and Technical Information (OSTI), December 2011. http://dx.doi.org/10.2172/1033082.

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Weiland, Mark A., Gene R. Ploskey, James S. Hughes, Christa M. Woodley, Zhiqun Deng, Thomas J. Carlson, J. R. Skalski, and Richard L. Townsend. Monitoring of Juvenile Subyearling Chinook Salmon Survival and Passage at John Day Dam, Summer 2010. Office of Scientific and Technical Information (OSTI), November 2012. http://dx.doi.org/10.2172/1097979.

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