Issue |
Bull. Fr. Pêche Piscic.
Number 367, 2002
Crayfish special volume 4, knowledge-based management of European native crayfishes. Dialogues between researchers and managers
|
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Page(s) | 777 - 784 | |
DOI | https://doi.org/10.1051/kmae:2002065 | |
Published online | 01 May 2008 |
SPECIES OF BRANCHIOBDELLIDAE (ANNELIDA) ON FRESHWATER CRAYFISH IN SOUTH TYROL (NORTHERN ITALY)
LES ESPÈCES DE BRANCHIOBDELLIDAE (ANNELIDA) OBSERVÉES SUR LES ÉCREVISSES DANS LE SUD TYROL (ITALIE DU NORD)
1
Centro di Ricerca Interdipartimentale sulle Tecnologie e l’Igiene degli Allevamenti Intensivi delle Piccole Specie, University of Bologna, Via San Giacomo 9, 40126, BOLOGNA, Italy. E-mail : fquaglio@alma.unibo.it
2
Institute of Zoology and Limnology, University of Innsbruck, Technikerstrasse 25, 6020, INNSBRUCK, Austria.
3
Dipartimento di Sanità Pubblica Veterinaria e Patologia Animale, University of Bologna, Via Tolara di Sopra 50, 40064, OZZANO EMILIA (BO), Italy.
4
Dipartimento di Patologia, Malattie Infettive e Parassitarie e Ispezione degli Alimenti di Origine Animale, University of Messina, Via S. Cecilia 30, 98123, MESSINA, Italy.
Received:
15
November
2001
Accepted:
13
February
2002
Twenty-eight freshwater crayfish were collected from 8 streams and one small lake in the province of South Tyrol (North Italy) from autumn 1999 to spring 2001, in order to investigate the presence of branchiobdellidans. At 6 of the streams the white clawed crayfish (Austropotamobius pallipes italicus) was collected, while the noble crayfish (Astacus astacus), the exotic species: signal crayfish (Pacifastacus leniusculus) and spiny-cheek crayfish (Orconectes limosus) were respectively caught at the other 2 streams and at the lake. Except for O. limosus, branchiobdellidans were observed on all crayfish examined. On noble crayfish, specimens of Branchiobdella italica and Branchiobdella hexodonta were found on the same host. Branchiobdella italica was largely recovered from all white clawed crayfish. The specimens of signal crayfish were found to carry only Xironogiton victoriensis.
Résumé
A partir de l’automne 1999 jusqu’au printemps 2001 en Tyrol du Sud, 28 écrevisses ont été prélevées dans 8 ruisseaux et un petit lac dans le but de vérifier la présence des Branchiobdellidae. L’écrevisse à pieds blancs (Austropotamobius pallipes italicus) a été trouvée dans 6 ruisseaux, l’écrevisse à pieds rouges (Astacus astacus) et l’écrevisse de Californie (Pacifastacus leniusculus) dans deux ruisseaux et l’écrevisse américaine (Orconectes limosus) dans le lac. A l’exclusion de l’écrevisse américaine, on a trouvé chez toutes les autres espèces des Branchiobdellidae. Chez l’écrevisse à pieds rouges, Branchiobdella italica et Branchiobdella hexodonta sont présentes. Chez toutes les écrevisses à pieds blancs, on a relevé une grande quantité de B. italica alors que chez les écrevisses de Californie on a retrouvé seulement le Xironogiton victoriensis.
Key words: Branchiobdellidae / freshwater crayfish / annelids / North Italy
Mots clés : Branchiobdellidae / écrevisse / Annelida / Italie du Nord
© ONEMA, 2002
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