General Fisheries Commission for the Mediterranean. Studies and Reviews No 91. Elasmobranchs of the Mediterranean and Black sea: status, ecology and biology. A bibliographic analysis

General Fisheries Commission for the Mediterranean. Studies and Reviews. No 91

Elasmobranchs of the Mediterranean and Black sea:
status, ecology and biology
A bibliographic analysis


by
Mohamed Nejmeddine BRADAI
Bechir SAIDI

and
Samira ENAJJAR
Institut National des Sciences et Technologies de la Mer (Tunisia)



Download Full Report pdf file -3 MB



Food and Agriculture Organization of the United Nations
Rome 2012


ABSTRACT

Bradai M.N., Saidi B. and Enajjar S.
Elasmobranchs of the Mediterranean and Black sea: status, ecology and biology. A bibliographic analysis.
Studies and Reviews. General Fisheries Commission for the Mediterranean. No 91. Rome, FAO. 2012. 108 pp.

The authors have compiled published information on taxonomy, distribution, status, statistics, fisheries, bycatch, biologic and ecologic parameters on age and growth, food and feeding habits, reproductive biology and stock assessment of elasmobranchs in the Mediterranean and Black Sea. This bibliographic analysis, through 661 papers dealing with elasmobranchs in the GFCM area, shows that cartilaginous species, including sharks, rays and chimaeras, are by far the most endangered group of marine fish in the Mediterranean Sea, with 31 species (40 percent of all) critically endangered, endangered or vulnerable. The biological characteristics of elasmobranchs (low fecundity, late maturity, slow growth) make them more vulnerable to fishing pressure than most teleost fish. Overfishing, wide use of non-selective fishing practices and habitat degradation are leading to dramatic declines of these species in the Mediterranean Sea. In general, elasmobranchs are not targeted but are caught incidentally. In many fisheries they are, however, often landed and marketed.


Table of Contents

Preparation of this document
Acknowledgements
Abstract

   

1.

INTRODUCTION

2.

MAIN CHARACTERISTICS OF THE GFCM MARINE AREA

3.

BIODIVERSITY OF ELASMOBRANCHS IN THE MEDITERRANEAN AND BLACK SEA

4.

ELASMOBRANCHS FISHERIES IN THE GFCM AREA

5.

DYNAMIC POPULATIONS AND STOCK ASSESSMENT OF ELASMOBRANCHS/ ABUNDANCE INDICES

6.

AVAILABLE BIOLOGIC PARAMETERS ON ELASMOBRANCHS IN THE GFCM AREA

7.

CONSERVATION MEASURES FOR ELASMOBRANCHS

8.

GENERAL CONCLUSION

9.

REFERENCES


APPENDIXES

 

Appendix I– Bibliographic references on elasmobranchs in the Mediterranean and Black Sea

 

Appendix II– Distribution of papers on elasmobranchs by geographic areas, species or group of species and topics

 

Appendix III– List of elasmobranchs of the Mediterranean and theBlack Sea

 

Appendix IV– The regional IUCN Red List status of all assessed Mediterranean elasmobranchs species

 

Appendix V– Colour plates of sharks and rays


The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO) concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. The mention of specific companies or products of manufacturers, whether or not these have been patented, does not imply that these have been endorsed or recommended by FAO in preference to others of a similar nature that are not mentioned.
The views expressed in this information product are those of the author(s) and do not necessarily reflect the views of FAO.


ISBN 978-92-5-107386-5

All rights reserved. FAO encourages reproduction and dissemination of material in this information product. Non-commercial uses will be authorized free of charge, upon request. Reproduction for resale or other commercial purposes, including educational purposes, may incur fees. Applications for permission to reproduce or disseminate FAO copyright materials, and all other queries concerning rights and licences, should be addressed by e-mail to:

Chief
Publishing Policy and Support Branch
Office of Knowledge Exchange, Research and Extension - FAO
Viale delle Terme di Caracalla, 00153 Rome, Italy
or by e-mail to: copyright@fao.org

© FAO 2013