Reproductive biology of Hepatus pudibundus (Crustacea: Brachyura), the most abundant crab on the southeastern Brazilian coast
| Autor: | Vivian Fransozo, Paloma Aparecida de Lima, Lissandra Corrêa Fernandes-Goés, Giovana Bertini, Antonio Leão Castilho, Rafael Augusto Gregati |
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| Rok vydání: | 2013 |
| Předmět: |
biology
Ecology media_common.quotation_subject Cell Biology Plant Science biology.organism_classification Biochemistry Crustacean Reproductive biology Genetics Seasonal breeder Temperate climate Sexual maturity Animal Science and Zoology Carapace Development of the gonads Reproduction Molecular Biology Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | Biologia. 69:219-227 |
| ISSN: | 1336-9563 0006-3088 |
| DOI: | 10.2478/s11756-013-0301-4 |
| Popis: | This study analyzed the size at sexual maturity and reproductive period of populations of Hepatus pudibundus in three bays on the northern coast of Sao Paulo, Brazil. Crabs were collected monthly and the bottom-water temperature was measured at each collection point. The animals were sexed, measured for carapace width (CW), and their gonadal stages were determined. A total of 8,674 specimens were collected (2,435 males and 6,239 females). Adult males showed the highest mean CW; the size at maturity for both sexes was 32.5 mm CW. Reproduction was continuous and peaked in spring and summer, because of the greater availability of plankton food for the larvae. This pattern is typical in tropical and subtropical regions, unlike the seasonal reproduction found in temperate regions. Reproductive activity of females was not significantly correlated with bottom-water temperatures. Immatures and individuals in all stages of gonadal development were found throughout the sampling period and at all depths, probably because the species completes its entire reproductive cycle in that area. |
| Databáze: | OpenAIRE |
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