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Early Life-History Implications of Selected Carcharhinoid and Lamnoid Sharks of the Northwest Atlantic
Branstetter, Steven
Branstetter, Steven
Abstract
The size of most newborn sharks makes them susceptible to predation from their own kind and other large fishes. In the northwestern Atlantic, juvenile nursery grounds can be generally classified according to whether or not the young are exposed to such predatory risk. Several related factors-breeding frequency, litter size, size at birth, early growth rate-may help offset early natural mortality. These factors are counterbalanced by the different species in several different ways, producing numerous early life history strategies. In general, slow growing species are either born at relatively large sizes or use protected nursery grounds, whereas faster growing species tend to rely more on growth rates than the other factors.
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1990-08-01
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U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service
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Branstetter1990.pdf
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VIMS Books and Book Chapters, Shark populations, shark life history
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Virginia Institute of Marine Science