Enteric helminths of the shortfin squid Illex argentinus in San Matias Gulf [Argentina] as stock discriminants

• Autorzy: Gonzalez R A , Kroeck M A
• Języki publikacji: EN

Abstrakty

EN

The parasitic fauna composition of the spring-spawning (SPR) and the summer-spawning (SSS) stocks of the shortfin squid Illex argentinus was studied in San Matías Gulf, Southwest Atlantic. Seven parasite taxa were identified: 3 cestodes (Scolex polymorphic, Scolex pleuronectis and Nybelinia lingualis), and 4 nematodes (Anisakis sp., Hysterothylacium sp., Ascarophis? sp. and Pseudoterranova? sp.). Based on the prevalence (P) and mean intensity (MI) S. polymorphic [cf. Prosobothrium sp.], S. pleuronectis (Onchobothriidae) and Anisakis were the main parasites of both stocks. P and MI of these parasites were higher in SPR than in SSS. Composition, P and MI of the enteric parasitic fauna found in the subpopulations of I. argentinus in the San Matías Gulf were different from those previously reported for the other stocks of the species that occur on the Argentine continental shelf. These results provide a substantial additional evidence for statement that the SPR and SSS stocks of I. argentinus from San Matías Gulf are biotopically isolated from the stocks that inhabit neighbouring areas of the Argentine continental shelf.

Słowa kluczowe

EN

parasite; Argentina; stock discrimination; shortfin squid; parasitic fauna; squid; Atlantic Ocean; Illex argentinus; San Matias Gulf; helminth

• Wydawca: -
• Czasopismo: Acta Parasitologica
• Rocznik: 2000
• Tom: 45
• Numer: 2
• Opis fizyczny: p.89-93,fig.

Twórcy

autor

Gonzalez R A

• Instituto de Biologia Marina y Pesquera "Almirante Storni", Universidad Nacional del Comahue, Costanera s-n, CC 104, 8520 San Antonio Oeste, Rio Negro, Argentina

autor

Kroeck M A

• Instituto de Biologia Marina y Pesquera "Almirante Storni", Universidad Nacional del Comahue, Costanera s-n, CC 104, 8520 San Antonio Oeste, Rio Negro, Argentina

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