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Population changes and reproduction of an alien spionid polychaete, Streblospio gynobranchiata, in shallow waters of the south Caspian Sea

Published online by Cambridge University Press:  03 March 2009

Mehrshad Taheri ,
Jafar Seyfabadi ,
Behrooz Abtahi  and
Maryam Yazdani Foshtomi
Mehrshad Taheri*
Affiliation:
Iranian National Center for Oceanography, 9, Etemad Zadeh Ave, Fatemi St, Tehran, Iran
Jafar Seyfabadi
Affiliation:
Faculty of Natural Resources and Marine Science, Tarbiat Modares University, Noor, Iran
Behrooz Abtahi
Affiliation:
Faculty of Natural Resources and Marine Science, Tarbiat Modares University, Noor, Iran
Maryam Yazdani Foshtomi
Affiliation:
Iranian National Center for Oceanography, 9, Etemad Zadeh Ave, Fatemi St, Tehran, Iran
*
Correspondence should be addressed to: M. Taheri, Iranian National Center for Oceanography, 9, Etemad Zadeh Ave, Fatemi St, Tehran, Iran email: [email protected]
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Abstract

Population changes and reproduction of the alien polychaete, Streblospio gynobranchiata, living in 5, 15 and 30 m depths of the south Caspian Sea (Noor coast) was studied seasonally during 2005. Density and biomass of S. gynobranchiata increased with increasing depth, total organic matter and decreased with sand percentage of the substrate. Maximum density was 10311.11 ± 1596.4 ind m−2 and biomass 2320 ± 359.19 mg m−2 were observed in 30 m depth in winter. The maximum and minimum densities and biomass were obtained in winter and summer, respectively. Mature females were observed in all seasons, but reproduction peaks were observed in summer and autumn.

Keywords

populationreproductionStreblospio gynobranchiatashallow waterCaspian Sea
Type
Research Article
Information
Marine Biodiversity Records , Volume 2 , January 2009 , e40
Copyright
Copyright © Marine Biological Association of the United Kingdom 2009

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