Prevalence, intensity and abundance of Rhadinorhynchus pristis [Acanthocephala, Rhadinorhynchidae] in chub mackerel, Scomber japonicus [Pisces, Scombridae] from Madeira Island

• Autorzy: Costa G , Pontes T. , Rego A.A.
• Języki publikacji: EN

Abstrakty

EN

Males and females of the acanthocephalan Rhadinorhynchus pristis Rudolphi, 1802, were found in the intestine of several chub mackerels, Scomber japonicus Houttuyn, 1782, caught at Madeira, Atlantic Ocean. Prevalence of infection was 50.6% in 1999 (n = 154) and 60.0% in 2001 (n = 30) and intensity of infection was 3.19 ± 3.84 and 3.056 ± 2.92, respectively. R. pristis showed an aggregated distribution as indicated by the aggregation and discrepancy indices 0.72 and 0.627, respectively. Comparisons of prevalences by Fisher's exact test showed no significant differences between the two samples and no significant relationship between abundance of infection and fish length. The presence of R. pristis in S. japonicus from Madeiran waters provides further evidence of relationships between the Madeiran parasite fauna and those of the western tropical Atlantic and the Mediterranean-Atlantic regions.

Słowa kluczowe

EN

Scomber japonicus; abundance; Scombridae; Rhadinorhynchidae; prevalence; Pisces; chub mackerel; Madeira Island; Rhadinorhynchus pristis; Acanthocephala; intensity

• Wydawca: -
• Czasopismo: Acta Parasitologica
• Rocznik: 2004
• Tom: 49
• Numer: 1
• Opis fizyczny: p.41-44,fig.,ref.

Twórcy

autor

Costa G

• Centre for Macaronensian Studies, Campus da Penteada, 9000-390 Funchal, Portugal

autor

Pontes T.

autor

Rego A.A.

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