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Academic & Professional Books  Insects & other Invertebrates  Molluscs  Molluscs: General

Naïades et Autres Bivalves d'Eau Douce de France [Naiades and Other Freshwater Bivalves of France]

By: Vincent Prié(Author)
336 pages, 641 colour photos and b/w line drawings, 44 colour distribution maps
Naïades et Autres Bivalves d'Eau Douce de France [Naiades and Other Freshwater Bivalves of France]
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  • Naïades et Autres Bivalves d'Eau Douce de France [Naiades and Other Freshwater Bivalves of France] ISBN: 9782856538098 Paperback Dec 2017 Usually dispatched within 1-2 weeks
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Naïades et Autres Bivalves d'Eau Douce de France [Naiades and Other Freshwater Bivalves of France]Naïades et Autres Bivalves d'Eau Douce de France [Naiades and Other Freshwater Bivalves of France]Naïades et Autres Bivalves d'Eau Douce de France [Naiades and Other Freshwater Bivalves of France]Naïades et Autres Bivalves d'Eau Douce de France [Naiades and Other Freshwater Bivalves of France]

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Language: French

Freshwater bivalves are not very charismatic animals, often difficult to observe and poorly known to naturalists. Yet, they can tell us extraordinary natural stories. Some species live up to 280 years and have as such experience two centuries of history of the rivers of France. The reproductive cycle of Naiads (family Unionidae), with the intervention of a fish host, makes them very mobile animals during the early stages of their life. On the other hand, the Cyclades are viviparous (giving birth to live young) and the adults protect the juveniles in the shelter of their valves during their first phase of growth. Shells and pearls have been much written about and there are many historical testimonials about them.

While they can account for more than 90% of the benthic biomass in preserved ecosystems, the Naiads have decreased dramatically during the twentieth century and it is difficult to imagine what the rivers of France were like when hundreds of thousands of bivalves were continuously filtering their waters.

This guide offers a panorama of France's freshwater bivalve species, with a general presentation and monographs for each species. The authors hope it will make users and managers of French rivers aware of the need for protection of these freswhater sentinels in France.

Summary in French:
Les bivalves d'eau douce sont des animaux peu charismatiques, souvent difficiles à observer et rnal connus des naturalistes. Pourtant, ils peuvent nous raconter des histoires naturelles extraordinaires. Certaines espèces vivent jusqu'à 280 ans et peuvent donc témoigner de deux siècles d'histoire des rivières de France. Le cycle reproductif des Naïades, avec l'intervention d'un poisson-hôte, en fait des animaux très mobiles pendant les premiers stades de leur vie. Au contraire les Cyclades sont vivipares et les adultes protègent les juvéniles à l'abri de leurs valves pendant leur première phase de croissance Les coquilles et les perles ont fait couler beaucoup d'encre et on dispose de nombreux témoignages historiques à leur sujet.

Alors qu'elles peuvent constituer plus cle 90% de la biomasse benthique dans des écosystèmes préservés, les Naïades ont régressé d'une manière alarrnante au cours du XXe siècle et il est difficile d'imaginer ce que pouvaient être les rivières de France à l'époque où des centaines de milliers de bivalves filtraient leurs eaux en permanence.

Ce guide propose un panorama sur les espèces de bivalves d'eau douce de France, avec une présentation générale et des monographies pour chaque espèce. Puisse-t-il sensibiliser les usagers et les gestionnaires de nos rivières à la protection de ces sentinelles des eaux douces de France.

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By: Vincent Prié(Author)
336 pages, 641 colour photos and b/w line drawings, 44 colour distribution maps
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