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Showing 1 to 15 of 15 for “"Multiple paternity"”.
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Multiple paternity and the breeding biology of the red-eyed treefrog, Agalychnis callidryas
… DNA fingerprinting revealed the presence of multiple paternity in two egg clutches examined from two matings involving a female with two males. The breeding biology of females and the potential costs and benefits of mating with multiple males were examined. Females were found to decrease the …
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Multiple Paternity of Caretta Caretta within the Northwestern Atlantic Ocean Population on Wassaw Island, Ga
… of a species. Polyandry, resulting in multiple paternity can influence the maintenance of genetic variation within a population. Within Testudines, the frequency of multiple paternity varies extensively among species (0-100% of nests). Previous studies on the loggerhead turtle (Caretta …
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Determining parentage and the effects of relatedness on play partner preference in Belding's ground squirrels
<p>I investigated 1) multiple paternity in Belding’s ground squirrels (<em>Urocitellus beldingi</em>) and 2) social partner preferences in juvenile <em>U. beldingi</em>. Prior work with blood allozymes demonstrated multiple paternity in <em>U. beldingi</em> litters. I evaluated paternity using …
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Genetic Structure of the Copperhead (Viperidae: Agkistrodon Contortrix Mokasen) at its Most Northern Distribution
… were assigned to more than one male, indicating multiple paternity, with significant paternal skew detected in one litter. Our study detailed population genetic parameters of a non-threatened pitviper that may be useful in comparative studies with threatened and endangered pitvipers, and is the …
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Reproductive Ecology and Hatchling Behavior of Olive Ridley Sea Turtles in Honduras
… studies, I used microsatellite markers to assess multiple paternity levels of the Honduran population, and found evidence for multiple paternity in 75% of the nests examined. This rate, higher than expected for a population of solitary nesters, suggests that some females may be coming from …
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Using Pedigree Reconstruction to Test Head-Starting Efficiency for Endangered Amphibians: Field Tested in the Houston Toad (Bufo Houstonensis)
… Several of these groups (20%) showed evidence of multiple paternity but it is unclear if this is the result of multiple amplexus events, indirect fertilization, or physical cross contamination of egg strands either in captivity or upon collection from the wild. I estimated the over winter …
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The Conservation Genetics of Two Emydid Turtles: <i>Emydoidea blandingii</i> and <i>Malaclemys terrapin</i>
… explore genetic diversity, population structure, paternity and demographic history in two emydid turtles that are currently experiencing threats to their survival. The Blanding’s turtle, <em>Emydoidea blandingii</em>, has experienced habitat fragmentation throughout its range, and this study …
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Spatial ecology, habitat use, genetic diversity, and reproductive success: measures of connectivity of a sympatric freshwater turtle assemblage in a fragmented landscape
… and females engaged in mounting behaviors with multiple individuals. Males and females mated successfully with multiple individuals, but successful matings did not always correspond with observed mating attempts and parentage was strongly skewed in males. For males, the number of successful …
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Fine-scale genetic structure and parentage in Urocitellus beldingi
… burrow associated with that particular female. Paternity, however, can only be posited by observation of mating because the species exhibits multiple mating in both sexes, though not all matings necessarily result in offspring. Multiple paternity has been previously verified through allozyme …
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Molecular Genetic Assessment of Population Structure, Paternity, and Sex Ratios for the Reddish Egret
… located in and around Baja, Mexico, 6) assess paternity of nest mates, 7) determine offspring sex ratio. We collected blood samples of244 nestlings, each from a separate nest, from colonies in Texas, Baja California, Bahamas, and Florida. Genetic differentiation was dramatic (global Fst = .257) …
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Conservation genetics of Australian quolls
… were also investigated. In addition, analysis of paternity was performed in a spotted-tailed quoll population. Despite severe range contraction, western quolls (chuditch) have higher genetic variation than other Australian quoll species. Conversely, genetic variation is lowest in eastern quolls, …
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Salamander Mating Behaviors and Their Consequences for Individuals and Populations
… techniques. Less than half of females mated with multiple males. Based on comparative analyses, I recommend the parental reconstruction approach with the computer program GERUD for assessing multiple paternity. The third chapter describes an experiment designed to study sexual selection. As …
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Population ecology and conservation genetics of the smooth snake (Coronella austriaca) in a fragmented heath landscape
… in the laboratory provides the first evidence of multiple paternity occurring in C. austriaca.
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DNA+eDNA: integration of traditional and emerging tools for monitoring marine ecosystems
… and assessing reproductive strategies like multiple paternity. Moreover, genetic tools can help assess population vulnerabilities, providing vital data for conservation efforts. Environmental DNA (eDNA) has revolutionized biodiversity studies, offering high-throughput, non-invasive methods …
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A molecular and evolutionary study of skua breeding systems
… revealed a single instance of extra-pair paternity and a single instance of a chick which was parented by neither resident adult. The most likely explanation for the latter is the 'adoption' of a chick from a neighbouring territory. Similarly, DNA fingerprinting was used to assign the sex …