<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The reproduction biology of Caspian vimba, Vimba vimba (L.), was investigated on the southwestern coast of the Caspian Sea using 712 fish specimens collected at three fisheries catch stations located in Talesh, Anzali, and Kiashahr over a two-year period from April 2012 through June 2013. Seasonal changes in the gonadosomatic index, gonad histological status, size frequency distribution of oocytes, and the fecundity of the species were studied. The peaks of the gonadosomatic index (GSI) were observed both in females and males in June 2012 and May 2013 indicating the variable peak spawning time of this species. Histological examinations and oocyte frequency distribution patterns showed synchronous oocyte development in the Caspian vimba. Absolute fecundity ranged from 5873 to 35421 eggs. The size at first maturity for females was 120 mm FL. We concluded that the Caspian vimba is a total spawner with variable spawning dependent on environmental factors.</p></abstract>

The reproduction biology of Caspian vimba, Vimba vimba (L.), was investigated on the southwestern coast of the Caspian Sea using 712 fish specimens collected at three fisheries catch stations located in Talesh, Anzali, and Kiashahr over a two-year period from April 2012 through June 2013. Seasonal changes in the gonadosomatic index, gonad histological status, size frequency distribution of oocytes, and the fecundity of the species were studied. The peaks of the gonadosomatic index (GSI) were observed both in females and males in June 2012 and May 2013 indicating the variable peak spawning time of this species. Histological examinations and oocyte frequency distribution patterns showed synchronous oocyte development in the Caspian vimba. Absolute fecundity ranged from 5873 to 35421 eggs. The size at first maturity for females was 120 mm FL. We concluded that the Caspian vimba is a total spawner with variable spawning dependent on environmental factors.

Reproductive biology of Caspian vimba, Vimba vimba (L.), in the coastal waters of the southwestern Caspian Sea

Department of Fisheries, Faculty of Natural Resources University of Guilan, Sowmeh-Sara, Iran

International Research Institute for Sturgeon Fishes Rasht, Guilan, Iran

Department of Biology, Faculty of science, University of Guilan, Rasht, Iran

Fisheries & Aquatic Life

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The reproduction biology of Caspian vimba, Vimba vimba (L.), was investigated on the southwestern coast of the Caspian Sea using 712 fish specimens collected...

Reproductive biology of Caspian vimba, Vimba vimba (L.), in the coastal waters of the southwestern Caspian Sea

Published Online: Nov 26, 2015

Page range: 171 - 180

Received: Jan 19, 2015

Accepted: Aug 28, 2015

DOI: https://doi.org/10.1515/aopf-2015-0020

Keywords
Caspian Sea, Vimba vimba, gonadosomatic index, fecundity, oocyte development

© Archives of Polish Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Reproductive biology of Caspian vimba, Vimba vimba (L.), in the coastal waters of the southwestern Caspian Sea

Published Online: Nov 26, 2015

Page range: 171 - 180

Received: Jan 19, 2015

Accepted: Aug 28, 2015

DOI: https://doi.org/10.1515/aopf-2015-0020

KeywordsCaspian Sea, Vimba vimba, gonadosomatic index, fecundity, oocyte development

© Archives of Polish Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Caspian Sea, Vimba vimba, gonadosomatic index, fecundity, oocyte development