Prevalencia, abundancia y caracterización de morfoespecies de sanguijuelas (Annelida: Hirudinea) en peces intermareales de Chile central#

• Autores: G Muñoz P Moraga
• Localización: Archivos de Medicina Veterinaria, ISSN 0301-732X, ISSN-e 0717-6201, Vol. 42, Nº. 2, 2010, págs. 71-78
• Idioma: español
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• Resumen

  • The aim of this study is to describe and compare the morphology and morphometry of leeches from intertidal fish. A total of 2, 124 fish specimens that belonged to 15 species were collected from intertidal rocky pools from central Chile. They were externally examined for leeches. Twelve fish species harboured these parasites but only three of them had the sufficient number of individuals to perform morphometrical analyses. Five morphotypes of leeches were cJassified according to their colour and size; three morphotypes (MTl, MT2 and MT3) were from Scartichthys viridis, a morphotype (MT4) was from Sicyases sanguineus, and another morphotype (MT5) was from Aphos porosus. The five morphotypes were compared using six morphometrical measurements (length and width of the body, diarneter of oral and posterior suckers, length of cJitellum and position of cJitellum from the anterior end). Morphometrical comparisons were based on absolute and relative measurements. The results indicated that MT4 and MT5 differed from the other morphotypes, whereas MTl, 2 and 3 did not differ significantly among them. MT4 had body and suckers wider than the other four morphotypes, whereas MT5 was longer, thinner and with a longer clitellum than the other morphotypes. According to these results, each fish species, ofthe three analyzed, harboured a distinct morphospecies. These leeches belong to the Piscicolidae family; although it was not possible to identify them at a genus leve!. This study al so provides new records of leeches for nine intertidal fish species of Chile.