Titre : | COSEWIC Assessment and update status report on the white sturgeon Acipenser transmontanus in Canada : endangered 2003 |
Auteurs : | COMMITTEE ON THE STATUS OF ENDANGERED WILDLIFE IN CANADA |
Type de document : | rapport |
Editeur : | Ottawa, CAN : COSEWIC, 2003 |
Format : | 57 p. |
Note générale : | Sigle : COSEWIC |
Langues: | = Anglais |
Catégories : | |
Mots-clés: | CANADA ; ACIPENSERIDAE ; ACIPENSER TRANSMONTANUS ; DENSITE DE POPULATION ; STOCK ; ESPECE MENACEE |
Résumé : | A long-lived species with a 30-40 year generation time, and low survival to adulthood that has suffered over a 50 % decline in the last three generations. Three of six populations are in imminent threat of extirpation. Extant populations are subject to realized threats of habitat degradation and loss through damning of rivers, channelization, dyking and pollution. Illegal fishing and incidentat catches are also limiting. In addition, a developing commercial aquaculture industry may also impose additional genetic, health land ecological risks to wild populations. |
En ligne : | http://www.cosewic.gc.ca |
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Centre | Localisation | Section | Cote | Statut | Disponibilité | Département |
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Bordeaux-Aquitaine | Gazinet | Rapports | AP ESP EST 50 | Empruntable | Disponible pour le prêt |