Author: Yokota Leandro Lessa Rosângela
Publisher: Springer Publishing Company
ISSN: 0378-1909
Source: Environmental Biology of Fishes, Vol.75, Iss.3, 2006-03, pp. : 349-360
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Abstract
Elasmobranch nurseries are habitats where females give birth to their young and juveniles spend their early life history. Hypotheses concerning nurseries suggest that these provide the young a better source of food and protection against predation, however the degree of exposure to predatory risk in nursery areas vary. According to Branstetter hypothesis, 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 others factors. Primary nurseries are habitats where parturition occurs and in which the young live for a short time and secondary nurseries are habitats in which juveniles are found after leaving the primary nursery and before reaching maturity.
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