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| LOPES,ANA ELISA B.; GRABOWSKI,RAPHAEL C.; GARCIA,JOYCE R.; FRANSOZO,ADILSON; COSTA,ROGÉRIO C. DA; HIROKI,KÁTIA A.N.; CASTILHO,ANTONIO L.. |
| ABSTRACT This is the first study to evaluate in broad spatiotemporal scales the growth parameters and population structure of Rimapenaeus constrictus, a barely damaged species composing the bycatch from shrimp fishing in the Western Atlantic. The abundance and size-class frequency distribution, growth, longevity and sex ratio were evaluated from monthly samples obtained in the northern littoral of São Paulo state from Jan/1998 to Jun/2003. We measured 5,812 individuals in which the sex ratio was skewed toward females; this was more evident in size classes greater than 10 mm in CL (carapace length) (binomial test, p<0.05). We selected 16 growth cohorts of females, and 8 of males, the majority consisting of younger individual cohorts excluded from the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fisheries biology; Latitudinal variation; Recruitment cohorts; Roughneck shrimp; Stock conservation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301013 |
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| CASTILHO,ANTONIO L.; GRABOWSKI,RAPHAEL C.; SIMÕES,SABRINA M.; SANTOS,ANA PAULA F.; COSTA,ROGÉRIO C.; FRANSOZO,ADILSON. |
| ABSTRACT The present study investigated the growth, longevity and reproductive dynamics ofArtemesia longinaris in the southeastern coast of Brazil over a two-year period. Monthly collections were conducted in Ubatuba and Caraguatatuba using a shrimp fishing boat equipped with "double-rig" nets. Each region was divided into 7 sampling stations up to 35 m deep. Size frequency distributions, growth, longevity, sex ratio, and abundance of individuals in each demographic class, were compared. The relationship between abiotic factors and abundance of each demographic class was assessed using a Canonical Correlation Analysis. A total of 64,641 individuals were collected (6,928 measured) with an estimated longevity of 1.30 (Ubatuba) and 1.14 (Caraguatatuba) years... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Habitat selection; Latitudinal variation; Longevity; Penaeoidea; Reproductive dynamics. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502123 |
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| LIMA,DANIEL J.M.; COBO,VALTER J.; AQUINO,MARIANA A.B. DE; FRANSOZO,ADILSON. |
| The main goal of this investigation was to characterize the population structure and shell occupancy of two sympatric hermit-crab species, Pagurus brevidactylus and Paguristes tortugae. The study was undertaken at Couves Island on the southeastern coast of Brazil, from March 2010 through February 2011, on subtidal rocky bottoms. Specimens were collected by SCUBA diving sessions. A total of 195 individuals of P. brevidactylus and 132 of P. tortugae were examined. Both populations showed unimodal size-frequency distributions, which were non-normal for P. brevidactylus and normal for P. tortugae. The median size of P. brevidactylus was significantly smaller than P. tortugae; in both species, males were significantly larger than females. For both, juveniles... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Continuous reproduction; Rocky bottoms; Shell partitioning; Sympatric species. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401769 |
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