Endohelminths of some species of fishes from Lake Xochimilco, Mexico
Por:
de Lourdes Garcia-Lopez, Maria, Salguero-Vargas, Guadalupe, Garcia-Prieto, Luis, Osorio-Sarabia, David, Perez-Ponce de Leon, Gerardo
Publicada:
1 dic 2016
Categoría:
Ecology, evolution, behavior and systematics
Resumen:
The helminth fauna of 8 introduced and 1 native species (Chirostoma
jordani) of freshwater fishes from Xochimilco Lake in southern Mexico
City, Mexico, is studied for the first time. Five species of fishes from
the families Goodeidae, Atherinopsidae and Poeciliidae were positive to
helminth infections. Their helminth fauna consists of 5 species of
parasites, including 1 adult tapeworm (Schyzocotyle acheilognathi), 2
trematode metacercariae (Posthodiplostomum minimum and Tylodelphys
aztecae), and 2 larval stages of nematodes (Contracaecum sp. and
Eustrongylides sp.). Schyzocotyle acheilognathi is recorded for the
first time in the poeciliid Pseudoxiphophorus jonesii. The metacercariae
of P. minimum and T aztecae are the species that reached the highest
prevalence, mean intensity and mean abundance values among the analyzed
fish. The goodeid G. atripinnis exhibited the richest helminth fauna,
since this species was parasitized by 5 helminth species. We hypothesize
that the loW helminth species richness of the Xochimilco Lake
ichthyofauna, compared to that found in other water bodies in Central
Mexico, might be the result of the biotic and abiotic conditions of the
lake which are influenced by the pollution levels in the area. An
alternative explanation would be that 8 of the 9 species of fishes
analyzed are introduced species into Xochimilco Lake, and have not been
in the system long enough to allow other helminth species potentially
available to become established. (C) 2016 Universidad Nacional Autonoma
de Mexico, Instituto de Biologia.
Filiaciones:
de Lourdes Garcia-Lopez, Maria:
Univ Nacl Autonoma Mexico, Lab Helmintol, Inst Biol, Apartado Postal 70-157, Mexico City 04510, DF, Mexico
Salguero-Vargas, Guadalupe:
Univ Nacl Autonoma Mexico, Lab Helmintol, Inst Biol, Apartado Postal 70-157, Mexico City 04510, DF, Mexico
Garcia-Prieto, Luis:
Univ Nacl Autonoma Mexico, Lab Helmintol, Inst Biol, Apartado Postal 70-157, Mexico City 04510, DF, Mexico
Osorio-Sarabia, David:
Univ Nacl Autonoma Mexico, Colegio Ciencias & Humanidades, Ave Canal San Juan S-N, Mexico City 09210, DF, Mexico
Perez-Ponce de Leon, Gerardo:
Univ Nacl Autonoma Mexico, Lab Helmintol, Inst Biol, Apartado Postal 70-157, Mexico City 04510, DF, Mexico
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