Capacidad de natación en Poecilia reticulata (Pisces: Cyprinodontiformes)

• Autores: Sergio E. Gómez, Ricardo A Ferriz
• Localización: Revista del Museo Argentino de Ciencias Naturales, ISSN-e 1853-0400, ISSN 1514-5158, Vol. 4, Nº. 2, 2002, págs. 181-185
• Idioma: español
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• Resumen

  • Swimming capacity in Poecilia reticulata (Pisces: Cyprinodontiformes): The swimmingcapacity of Poecilia reticulata Peters, 1859 was analyzed using 265 specimens of three classes: longtailedmales, short-tailed males, and females, with a total range of standard length between 16.0 and 42.1mm. Experiments were carried out in a current tunnel under controlled laboratory conditions at a watervelocity of 15.4 cm s-1, and a temperature of 24.7° C. The fatigue time varied between 1.2 and 56.4 min.and it was correlated positively with the fish standard length in short-tailed males and females. Bothclasses showed a better swimming capacity than long-tailed males. Only large short-tail males (27.5 mm)have a significant better capacity than smaller females (24.2 mm). According to these data, and thesubcylindrical body form, Poecilia reticulata may be considered an intermediate type betweenacceleration and navigation specialists.