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Distribution and abundance of eggs and estimation of spawning stock biomass of anchovy, Engraulis encrasicolus (Linnaeus, 1758), in the south-eastern Adriatic Sea

Published online by Cambridge University Press:  23 January 2015

Milica Mandić ,
Slobodan Regner ,
Mirko Đurović ,
Aleksandar Joksimović ,
Ana Pešić  and
Jasmina Krpo-Ćetković
Milica Mandić*
Affiliation:
Institute of Marine Biology, Dobrota bb, 85330 Kotor, Montenegro
Slobodan Regner
Affiliation:
Institute for Multidisciplinary Research, Belgrade, Kneza Višeslava 1, 11000 Belgrade, Serbia
Mirko Đurović
Affiliation:
Institute of Marine Biology, Dobrota bb, 85330 Kotor, Montenegro
Aleksandar Joksimović
Affiliation:
Institute of Marine Biology, Dobrota bb, 85330 Kotor, Montenegro
Ana Pešić
Affiliation:
Institute of Marine Biology, Dobrota bb, 85330 Kotor, Montenegro
Jasmina Krpo-Ćetković
Affiliation:
Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia
*
Correspondence should be addressed to: M. Milica, Institute of Marine Biology, Dobrota bb, 85330 Kotor, Montenegro email: mamilica@ac.me
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Abstract

Seasonal distribution and abundance of anchovy eggs were analysed during three scientific cruises carried out from summer 2006 to summer 2007 in the Boka Kotorska Bay, and one cruise in July 2008 in the open waters of the south-eastern Adriatic Sea. Daily egg production method (DEPM) was applied for the first time for estimation of the anchovy spawning stock biomass in the south-eastern Adriatic Sea. The daily egg production was 13–581 eggs day−1 within the bay, and 42–110 eggs day−1 in the open waters. Anchovy egg abundance was highest in spring inside the Bay of Kotor (one of the innermost and eutrophic sub-bays of the Boka Kotorska Bay), which indicates that the conditions for anchovy spawning are very favourable in this part of the Adriatic Sea, even when temperatures are below the optimum. This study has shown that the Boka Kotorska Bay is an area of very intensive spawning of anchovy, and that small-size anchovies live and spawn in the bay, and after spawning migrate towards open waters. The length at which 50% of anchovy were mature (L50) was calculated as 9.28 for females and 9.02 for males. Spawning stock biomass was at a stable level during the period of investigation.

Keywords

European anchovydistributionfish eggssouth Adriatic Seadaily egg production method
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 95 , Issue 5 , August 2015 , pp. 1051 - 1059
Copyright
Copyright © Marine Biological Association of the United Kingdom 2015 

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