Global ETD Search
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Showing 1 to 20 of 147 for “"Parental Care"”.
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The evolution of parental care in insects
… on evolutionary costs and benefits of insect parental care. I use phylogenetic methods to test large-scale hypotheses, and field studies to test proximate hypotheses. Initially I look at the evolution of variation in the sex performing care, reconstructing transitions across insect …
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A psychological study of children legally removed from parental care
… of the child who is legally removed from their parental care, although it may only be on a temporary basis, is an enormously expensive undertaking, both in terms of financial and emotional expenditure. In every respect, to all concerned, the event is a painful and tragic one. there have been few …
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Physiological bases of parental care in the burying beetles, Nicrophorus orbicollis
… beetles, Nicrophorus orbicollis, have extended biparental care. They bury and prepare small vertebrate carcasses as food for their young. While females provide the most care, single males show a remarkable behavioral compensation after a mate loss. Here, I integrate behavioral and physiological …
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Family Conflicts over Parental Care in the Blue Tit, Cyanistes caerleus.
Current research into parental investment has focused on the influence of conflicts of interest between family members. This thesis examines how these conflicts affect parental investment into individual offspring within broods of blue tits, Cyanistes caeruleus. Experimental work mid-way through …
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Smallmouth bass mortality during parental care: implications for year-class strength
… influenced by life stage, density and growth, parental male attributes, fungus infection (egg stage), and predation during parental care in the North Anna River, Virginia. In 1994, stream discharge was relatively low and stable during spawning, and nest success was high (64%). Mortality …
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Spawning and parental care in the pink convict variety of Cichlasoma nigrofasciatum (Gunther)
Spawning and parental care in the pink variety of Cichlasoma nigrofasciatum (Gunther) was studied from September 1970 to May 1971. The objectives of the study were to determine: (1) the spawning behavior of C. nigrofasciatum when isolated as pairs; (2) the spawning behavior of a pair when sharing …
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Sex and Fear: Mathematical models of mate choice, parental care, and maladaptive anxiety
In many contexts, animals must infer salient information about another individual indirectly by observing some other characteristic of that individual. In Chapter 1 of this thesis, a model of costly signaling is developed to investigate how stochastic signal costs influence the overall cost of …
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Effects of exogenous androgens on parental care behaviour in male bluegill sunfish (Lepomis macrochirus)
… between nurturing and defensive behaviour during parental care. This research, however, comes from species with biparental care, where changes in behaviour of one parent can be compensated for by the other parent. I tested the validity of this trade-off by manipulating androgen levels in bluegill …
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Parental care in the common tern (Sterna Nirundo): sexual roles in a monogamous seabird
The parental behaviour of male and female Common Terns (Sterna hirundo) was documented throughout two breeding seasons at a colony near Port Colborne , Ontario. Thirteen and fourteen pairs of terns were chosen for intensive study in 1982 and 1983, respectively. The delivery of fish by males to …
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The neural and hormonal basis of the loss of parental care in threespine stickleback
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Perceptions of Parental Care and Overprotection in Childhood: Influences on the Neurobiological Adaptation to Motherhood
<p>Recalled memories of caregiving in childhood are especially salient during the postpartum period and inform mothers’ conceptualization of her new parenting role. Positive perceptions of care received from one’s parents are related to improved maternal-infant bonding and positive parenting …
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The Relationship Between Self-Reports of Delinquent Behaviors and Adolescents' Perceptions of Parental Care and Protectiveness
… results showed correlations between perceived Parental Care and self-reported levels of delinquent behaviors in both males and females. This study has shown that more males than females report participation in delinquent behaviors. As hypothesized, low levels of perceived Parental Care …
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Foraging ecology and parental care of common terns (Sterna hirundo) nesting in Windermere Basin, Lake Ontario
… rates. There was a clear separation of parental roles: males were primarily responsible for feeding chicks while females allocated more time to brood attendance. The prey species most commonly delivered to chicks by adults were rainbow smelt (Osmerus mordax) and alewife (A/osa …
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Role of Parental Care and Ontogenetic Diets Shifts in the Recruitment Variation of an Aquatic Predator
… DNA fingerprints were used to quantify parental effects on brood-specific contribution to fall recruitment in environments that differed in the presence of bluegill sunfish Lepomis macrochirus , an important brood predator. Overall, the majority of fall recruits originated from the …
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The pre-reproductive period in a tropical bird: parental care, dispersal, survival, and avian life histories
… this period is essential for studies of parental care, dispersal, demography, and life histories. Studies of the pre-reproductive period are particularly few in tropical regions, where the organization of life histories are predicted to differ compared to northern hemisphere species. For …
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Fluctuating human activity and associated anthropogenic food availability affect behaviour and parental care of Red-winged Starlings
… Town, South Africa alter their behaviour and parental care of nestlings in response to fluctuating numbers of people and associated food over a relatively short timescale. I used data from nest watches and behavioural observations collected during both incubation and nestling periods to test …
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Reproductive Decisions in American Robins (Turdus Migratorius): Relationships Among Paternity Allocation, Parental Care, Plumage Variation, and Mate Choice
… opportunity, extra-pair paternity (EPP), parental care, and mate choice in the American robin, Turdus migratorius, a socially monogamous, multi-brooded songbird. Reproductive success in American robins was strongly influenced by the number of nesting attempts made in a single breeding …
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