9 - Life-history and Reproductive Strategies of Bats

Citation

Material Information

Title:
9 - Life-history and Reproductive Strategies of Bats
Series Title:
Reproductive Biology of Bats
Creator:
Racey, Paul A.
Entwistle, Abigail C.
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Bats ( local )
Reproductive Strategies Of Bats ( local )
Bat Reproduction ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
The timing and frequency of reproduction are major determinants of life-history strategies, which have evolved to maximize lifetime reproductive output, and thus to maximize fitness in terms of an individual's genetic contribution to the next generation. Bats have distinctive life-history strategies for mammals of their size. Most small animals have evolved a “live fast - die young” strategy, characterized by rapid reproduction and high mortality. In contrast, bats generally have a life history characterized by longevity with multiple reproductive events, low litter size and delayed onset of sexual maturity. Typically a single young is produced, although twins are common in some species. The trend for smaller mammals to generally produce relatively larger young reaches its extreme in bats, in which the neonate may weigh up to 43% of maternal mass. Coupled with one of the lowest mass-specific fetal growth rates recorded within mammals, bats are characterized by long gestation lengths for mammals of their size. This is followed by a relatively long period of lactation and post-natal care. Longer gestation, coupled with a shorter period of lactation, may reflect lower energetic investment per day in gestation, compared to the high costs of lactation, and may represent a strategy by which energetic investment in young is optimized in relation to seasonal food abundance.
Original Version:
Reproductive Biology of Bats, Vol. 2000 (2000-12-01).

Record Information

Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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University of South Florida
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serial

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