Parental investment in pinnipeds
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. 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 ...
Parental investment in pinnipeds
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WebPinnipeds—fur seals and sea lions, walruses and seals—are one of three major clades of modern marine mammals, having a fossil record going back at least to the late Oligocene. … 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
WebParental characteristics and environment can affect survival and future reproductive success of offspring. In pinnipeds, mothers provide maternal care by producing milk and … WebParental investment is defined by Triv ers (1972) as "any investment by the par ent in an individual offspring that in creases the offspring'schance of surviving (and hence …
WebAll pinnipeds give birth and undergo an annual moult on land and many make predictable seasonal movements for these reasons. Northern Elephant Seals ( Mirounga angustirostris ), however, make exceptionally long migrations totalling as much as 21,000 km every year. 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.
Web1 Oct 1996 · Pinni peds spend the majority of their time at sea foraging; however, with the exception of the walrus, they appear to require land (or sea ice) on which to give birth and nurse their young...
WebParental Investment Parent-child attachment, whether involving prox-imity-related systems or caregiving-warmth, is readily understandable in terms of the more general topic of parental investment; that is, parent-child attachment is a manifestation of the evolution of parental invest-ment. Trivers (1974) defined parental investment as re- tenis dc damaWebBalancing benefits and costs of care almost inevitably leads to tensions among individuals that provide and use the resource ‘parental care’. Thus parental care and with it parental … tenis dc bota para mujerWebParental 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 … tenis dc dama skate