Spawning Migration of the European Eel: Reproduction index, a useful tool for conservation management (Fish & Fisheries Series)

"The European eel Anguilla anguilla is a common fish species in West European countries supporting several thousands of small-scale fisheries. In June 2007, it has been listed in Annex B of CITES after the 99% decline in recruitment observed over the last decades. A European Council Regulation was issued on September 2007 to arrest the collapse of the eel stock. In this book, we discuss the factors that may contribute to the collapse of the European eel population. With respect to conservation measures two important aspects have to be considered: quality and quantity of escaping silver eels." "Clearly, a poor condition of the silver eels can never be compensated by large numbers. Qualitative parameters were thus far hardly available for management applications. The main goal of this book is to provide useful quality parameters for migrating silver eels, indicating their contribution to recruitment. The process of migration and maturation also provides information about the natural conditions for eel reproduction. Therefore, this book will also be very useful for eel aquaculture; it may provide tools for reproduction as well as for suppression of precocious maturation. An integrative approach regarding eel maturation requires a combination of ecology and physiology. In this book we included both aspects, and we hope that this will contribute to the restoration of the European eel population."--BOOK JACKET How to estimate the reproductive success of European silver eels / Guido van den Thillart and Sylvie Dufour Seasonal evolution and individual differences in silvering eels from different locations / Caroline M.F. Durif ... [et al.] Silvering : metamorphosis or puberty? / Karine Rousseau ... [et al.] Silver eel migration and behaviour / Maarten C.M. Bruijs and Caroline M.F. Durif High pressure resistance and adaptation of European eels / Philippe Sébert ... [et al.] Acclimation to seawater in the European eel Anguilla anguilla : effects of silvering / J. Cliff Rankin Calcitonin gene-related peptide (CGRP), a new endocrine factor involved in the complex multi-hormonal control of the gill osmoregulation : evidence from studies in the European eel, Anguilla anguilla / Anne-Gaëlle Lafont, Sylvie Dufour, and Martine Fouchereau-Peron Energy requirements of European eel for trans Atlantic spawning migration / Guido van den Thillart, Arjan Palstra, and Vincent van Ginneken Impact of the swim-bladder parasite on the health and performance of European eels / Csaba Székely ... [et al.] Effects of swimming on silvering and maturation of the European eel, Anguilla anguilla L. / Arjan Palstra, Vincent van Ginneken, and Guido van den Thillart The gonadoliberin(S)-gonadotropin(S) axis in the eel : expression and regulation under induced maturation and sex steroid feedbacks / Salima Aroua ... [et al.] Dopamine inhibition of eel reproduction / Finn-Arne Weltzien ... [et al.] Artificial maturation and reproduction of the European eel / Arjan Palstra and Guido van den Thillart Testis development, sperm quality evaluation and cryopreservation in the European eel / Luz Pérez ... [et al.] The effect of PCBs on the spawning migration of European silver eel (Anguilla anguilla L.) / Vincent van Ginneken ... [et al.] Impact of eel viruses on the recruitment of European eel / Olga Haenen ... [et al.] Evolutionary consequences of eel migration / Gregory Maes, Marti Pujolar, and Filip Volckaert Proximate and ultimate control of eel continental dispersal / Eric Edeline, Sylvie Dufour, and Pierre Elie Reproduction capacity of European eels / Sylvie Dufour and Guido van den Thillart.

The European eel Anguilla anguilla is a common fish species in West European countries supporting several thousands of small-scale fisheries. In June 2007, it has been listed in Annex B of CITES after the 99% decline in recruitment observed over the last decades. A European Council Regulation was issued on September 2007 to arrest the collapse of the eel sk. In this book, we discuss the factors that may contribute to the collapse of the European eel population. With respect to conservation measures two important aspects have to be considered: quality and quantity of escaping silver eels. Clearly, a poor condition of the silver eels can never be compensated by large numbers. Qualitative parameters were thus far hardly available for management applications. The main goal of this book is to provide useful quality parameters for migrating silver eels, indicating their contribution to recruitment. The process of migration and maturation also provides information about the natural conditions for eel reproduction. Therefore, this book will also be very useful for eel aquaculture; it may provide tools for reproduction as well as for suppression of precocious maturation. An integrative approach regarding eel maturation requires a combination of ecology and physiology. In this book we included both aspects, and we hope that this will contribute to the restoration of the European eel population.