Skip Navigation


ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on November 13, 2007
ICES Journal of Marine Science: Journal du Conseil 2007 64(9):1829-1835; doi:10.1093/icesjms/fsm159
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
64/9/1829    most recent
fsm159v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Motta, F. S.
Right arrow Articles by Braga, F. M. S.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Motta, F. S.
Right arrow Articles by Braga, F. M. S.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© 2007 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Reproductive biology of the Brazilian sharpnose shark (Rhizoprionodon lalandii) from southeastern Brazil

Fabio S. Motta1,, Rafael C. Namora2, Otto B. F. Gadig1 and F. M. S. Braga2

1 Universidade Estadual Paulista, Campus do Litoral Paulista, Praça Infante Dom Henrique s/n, Parque Bitarú, CEP 11330-900 São Vicente SP, Brazil
2 Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Av. 24-A, 1515, Bela Vista, CEP 13506-900, Rio Claro SP, Brazil

Correspondence to F. S. Motta: tel: +55 13 35699400; fax: +55 13 35699446; e-mail: motta{at}bignet.com.br

Motta, F. S., Namora, R. C., Gadig, O. B. F., and Braga, F. M. S. 2007. Reproductive biology of the Brazilian sharpnose shark (Rhizoprionodon lalandii) from southeastern Brazil. – ICES Journal of Marine Science, 64: 1829–1835.

The reproductive biology of the Brazilian sharpnose shark, Rhizoprionodon lalandii, off southeastern Brazil was investigated using data from gillnet landings. The size-at-maturity for males and females was estimated to be 59 and 62 cm total length (LT), respectively. Ovarian fecundity ranged from 3 to 7 follicles (mean = 4.54), and uterine fecundity from 1 to 5 embryos (mean = 3.3). There was a slight positive relationship between female LT and the number of ovarian follicles, but uterine fecundity was not related to female LT. Embryonic growth is fast following fertilization during summer and autumn. Gestation requires 11–12 months, and peak parturition is between August and September. A comparison of size-at-maturity between animals from northeastern and southeastern Brazil suggests the existence of at least two stocks of R. lalandii along the Brazilian coast.

Keywords: Elasmobranchii, fecundity, reproduction, shark, size-at-maturity

Received 22 January 2007; accepted 7 October 2007; advance access publication 13 November 2007.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.