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The reproductive cycle of Callinectes danae Smith, 1869 (Decapoda, Portunidae) in the Ubatuba Region, Brazil
The reproductive cycle of this species was studied based on their moult cycle and the development of their gonads, evidenced by the presence of ovigerous females with ovaries in all the development phases.
Population biology of Callinectes ornatus Ordway, 1863 (Decapoda, Portunidae) from Ubatuba (SP), Brazil
Departamento de Zoologia Instituto de Biociencias Centro de Aquicultura - UNESP, C.P. 510, Cep 18.618-000 Botucatu, SP
Comparative analysis of the relative growth of Uca rapax (Smith) (Crustacea, Ocypodidae) from two mangroves in São Paulo, Brazil
A study on the relative growth of two populations of Uca rapax was performed primarily to determine the size at onset sexual maturity, finding positive allometric growth of females abdominal width is likely related to the incubation process, while positively allometry growth of male's cheliped almost certainly relates to reproductive behaviour.
Reproduction and recruitment of the South American red shrimp, Pleoticus muelleri (Crustacea: Solenoceridae), from the southeastern coast of Brazil
- A. Castilho, Rogério Caetano da Costa, A. Fransozo, M. L. Negreiros-Fransozo
- Biology, Environmental Science
- 30 September 2008
Investigation of reproduction, recruitment, and size at sexual maturity of the shrimp P. muelleri off the coast of the state of São Paulo, Brazil, suggest that the main reproductive months extend from late spring to early summer, and the hypothesis of the intrusion of the South Atlantic Central Water mass suggests that this species has a continuous reproductive pattern.
SPATIAL AND SEASONAL DISTRIBUTIONS OF CALLINECTES DANAE (DECAPODA, PORTUNIDAE) IN UBATUBA BAY, SÃO PAULO, BRAZIL
Abstract The spatial and seasonal distributions of Callinectes danae Smith, 1869, in Ubatuba Bay, São Paulo, Brazil, were investigated as a part of a broad study on the general biology of portunids…
ALLOMETRIC GROWTH IN THE FIDDLER CRAB UCA THAYERI (BRACHYURA, OCYPODIDAE) FROM A SUBTROPICAL MANGROVE
Remarkable ontogenetic changes were observed in the allometric growth of the male major cheliped and the female abdomen, indicating that these structures are closely connected to the timing of sexual maturity.
Ecology of the Rock Shrimp Sicyonia dorsalis Kingsley, 1878 (Crustacea: Sicyoniidae) in a Subtropical Region of Brazil
The present study analyzes the abundance and distribution of the rock shrimp Sicyonia dorsalis, in rela- tion to water temperature, salinity, depth, organic matter content, and sediment texture in…
Population biology of Uca maracoani Latreille 1802-1803 (Crustacea, Brachyura, Ocypodidae) on the south-eastern coast of Brazil
The population biology of Uca maracoani was investigated in an estuarine mudflat in the Jabaquara River, Paraty, Brazil, where males predominated during most of the year, except in July and August when the proportion of females was higher.
On the population biology of the mottled shore crab Pachygrapsus transversus (Gibbes, 1850) (Brachyura, Grapsidae) in a subtropical area
Annual size frequency distributions revealed clues of population stability and indicated that young individuals reach the adult habitat in a gradual process, and Ovigerous ratio shows a remarkable seasonality in which highest percentages of ovigerous females occur during summer months.
The megalopa and juvenile development of Pachygrapsus transversus (Gibbes‚ 1850)(Decapoda‚ Brachyura) compared with other grapsid crabs
A review of the available information indicated that settlement of large megalopae and fast juvenile development, preceding a precocious sexual maturity, are trends in Grapsinae and Plagusiinae.