Ecological analysis of the helminths of round-tailed muskrats (Neofiber alleni True) in southern Florida

The helminths of 114 round-tailed muskrats (Neofiber alleni True) from sugarcane fields in southern Florida were studied. Eight species of helminths were found, one cestode and seven nematodes. Of the 114 muskrats studied, 113 were infected with one to five species (mean = 2.6). Intensities varied from 1 to 2543 (mean = 149.3). Strongyloides sigmodontis was more abundant in juveniles and males and during the wet season. Carolinensis kinsellai was more abundant in juveniles while Raillietina sigmodontis was found only in males. Trichostrongylus spp. were more abundant during the wet season and in juveniles. None of these variables was interactive. The helminth community of round-tailed muskrats was dominated by satellite species, most of which were apparently derived from cotton rats (Sigmodon hispidus).