Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"maternal investment"”.
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Maternal investment tactics in cooperative breeding systems
… to the care of offspring, the optimum level of investment for each carer depends on the behaviour of the others. Previous theoretical and empirical work has largely focused on carer contributions within a single stage of a breeding attempt, neglecting the potential for investment during earlier …
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Environmental and social influences of foraging behaviour and maternal investment with a note on the mating frequency of the eastern carpenter bee, Xylocopa virginica
This thesis studies how weather and sociality influence the foraging effort input costs of brood production, and that multiple mating contributes to low-group relatedness and non-kin sociality in the Eastern carpenter bee, Xylocopa virginica. In Chapter 2, using a natural experiment which included …
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Variation in Egg Components: A Study of Maternal Investment and Resource Partitioning in the Nesting Loggerhead Sea Turtle; Estimating Genic Variation and Mapping Genetic Lineage of a Rare Captive Helodermatid Population: <em>Heloderma Horridum Charlesbogerti</em>
… across the nesting season. This study shows that maternal condition declined across the nesting season and this decline correlated with the decrease in egg size, specifically the amount of water allocated to eggs. Late season clutches were incubating at the same time that seasonal rainfall …
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Intraspecific competition in Leucadendron xanthoconus (O.Knutze) K. Shun
… and Slauson (1986). Based on the hypothesis that maternal investment is far greater than paternal investment at reproduction, female resource requirements were presumed to be larger than males. Consequently, females are the stronger competitors. Evidence for intersexual and intrasexual competition …
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Mother-Offspring Relationships in Tibetan Macaques (<i>Macaca thibetana</i>) at Mt. Huangshan, China
… Researchers have found species differences in maternal behavior, as well as a female offspring bias in female philopatric societies. However, little is known about the mother-offspring relationship of Tibetan macaques (<em>Macaca thibetana</em>) from the two habituated sites in China, Mt. Emei …
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Infant care, nutritional development and lactation in chimpanzees at Ngogo, Kibale National Park, Uganda
… affecting the time from complete dependence on maternal milk to nutritional independence (i.e. infant nutritional development), and obtaining accurate data on the timing of infant feeding transitions are needed to ultimately understand species-specific life history components. I quantitatively …
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Life history, growth and dental development in young primates: a study using captive rhesus macaques
… related to patterns of pre- and early post-natal investment. Infant suckling and feeding behaviour are related to cranial development in males, and the size of the infant in relation to the mother may be important in the timing of weaning in daughters. A high degree of variation in neonate size …
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Understanding White-Tailed Deer Productivity: Population Ecology of Neonates
… from 2007–2009 in north-central South Dakota. Maternal investment plays a critical role in neonate survival, and adults can improve survival of offspring by defending them against predators. During captures of neonates in spring 2007 and 2008 in north-central South Dakota, we documented 24 …
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Effects of Habitat Quality on Reproduction in Two Georgia Populations of Gopherus Polyphemus
… of this study was to examine differences in maternal investment by examining variation in the habitat structure and reproductive parameters for two populations of Gopherus polyphemus in Southeast GA. Both habitat structure and reproductive parameters for these populations are known from a …
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Female Ornamentation in the American Robin
… female ornamentation, especially where male investment in offspring and variation in female quality are high. I investigated this in the American robin (Turdus migratorius), a socially monogamous species with bi-parental care and variable female ornamentation. Female robins display …
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The ontogeny of feeding behavior of Nicaraguan mantled howler monkeys (Alouatta palliata)
… lower toughness profile, extended reliance on maternal milk, and increased mortality rate during periods of dietary stress indicates that they struggled with the transition to dietary independence. Growing quickly throughout the juvenile period may be a life history strategy that howlers …
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Population ecology of wood ducks in Nevada under experimental manipulation of harvest
… In chapter four I investigated how variation in maternal investment in offspring by nesting female wood ducks affected duckling mortality (1-survival) to 60 days of age using capture-mark-recapture techniques. I used CMR data from 3,035 ducklings that were marked with uniquely coded webtags on …
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Reproductive Biology of Alligator Snapping Turtles: Behavior, Reproductive Investment, and Nest Predation
… I studied: (1) nesting behavior and (2) maternal reproductive investment patterns in a captive alligator snapping turtle population housed outdoors under semi-natural conditions, and (3) nest predation patterns in a reintroduced population. Both sites were located in the species' …