Parental investment in pinnipeds
Web24 Sep 1996 · A running theme throughout the chapters shows that parental care is anchored to the ecology, reproductive physiology, and embryonic development of a … WebFedak et al. (1996), the investment patterns of female of transfer of energy from mother to offspring is sup-southern elephant seals (Mirounga leonina) appear para- ported by the observation that pinnipeds have some of doxical in that large females invest as little as half the rel- the most concentrated milk of any mammals, especially
Parental investment in pinnipeds
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WebIn this way the fundamental relationship between the foraging ecology and reproductive pattern of pinnipeds can be examined. Information about feeding is difficult to acquire, and conclusions are often of necessity inferred from records from relatively new instruments like time/depth recorders. Web30 Oct 2015 · Despite limited detrimental effects on the individual, the challenge by Bacillus subtilis appears to act as a cue to increase reproductive investment. The challenge may indicate a suite of negative environmental conditions that could compromise future breeding opportunities. This could act as a cue to increase parental investment in the current ...
WebParental Investment in Pinnipeds @article{Trillmich1996ParentalII, title={Parental Investment in Pinnipeds}, author={Fritz Trillmich}, journal={Advances in The Study of … Web15 Jul 2024 · Abstract OBJECTIVE To identify factors associated with keratopathy in captive pinnipeds and to provide guidance for preventive measures. ANIMALS 319 captive pinnipeds (229 otariids [sea lions and fur seals], 74 phocids [true seals], and 16 odobenids [walrus]) from 25 facilities. PROCEDURES Descriptive data collected from questionnaires …
Web1 Sep 1999 · Three main hypotheses have been proposed with regard to the selective forces that modify the social system and gregariousness of pinnipeds. These hypotheses … WebParental investment can be split into two main categories: mating investment and rearing investment. Mating investment consist of the sexual act and the sex cells invested. The rearing investment is the time and energy expended to raise the offspring after conception.
WebParental investment is defined by Triv-ers (1972) as "any investment by the par-ent in an individual offspring that in-creases the offspring's chance of surviving (and hence …
Web15 Feb 2010 · The definition of parental investment is a subject of discussion and problems often arise concerning what should and should not be included. Today, the term is … easy fasting to boost weight lossWebParents' Socioemotional Investment in Children Parental Investment in Children (PIC) is a 24-item questionnaire designed to assess parents' so-cioemotional investment in their … easy fast healthy snacksWebMaternal investment, in terms of pup birth mass, in gestation by Antarctic fur seals ( Arctocephalus gazella) was related to the date of birth in two consecutive years. There were significant differences in birth mass between years and between the sexes within years. easy fast healthy lunch recipesWebNote that the parental investment hypoth-esis assumes that parental investment patterns determine the sexual selection patterns (Figure 1). However, this hypothesis was criticized, since there was no reason why a high initial investment would select for higher investment in the future. Furthermore, the parental investment cured meats cancerWebParental characteristics and environment can affect survival and future reproductive success of offspring. In pinnipeds, mothers provide maternal care by producing milk and protecting their young from threats on land, e.g., attacks from other females. Contest behaviour and dominance structure of females have been studied little in pinnipeds. I … easy fast healthy lunch ideasWeb14 Nov 2003 · Pinnipeds have characteristics that make them suitable subjects to study as examples of life-history evolution in a large mammal. In particular, the problem of allocation is simplified because almost all species are annual breeders and they produce a single offspring at each reproductive attempt, despite an order of magnitude variation in adult … easy fast home cooked mealsWebThe chapter also focuses on evidence for maternal investment and the relationship between energy expenditure and investment and the evidence for and against differential investment in male and female offspring. It presents the observation of post weaning care in pinnipeds for which it is not clear if investment is involved at all. easy fast loans near me