Comparative Parasitology 68(2) 2001 - Peru State College
Comparative Parasitology 68(2) 2001 - Peru State College
Comparative Parasitology 68(2) 2001 - Peru State College
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206 COMPARATIVE PARASITOLOOY, <strong>68</strong>(2), JULY <strong>2001</strong><br />
Table 1. Fish species from the Lerma-Santiago river basin of west-central Mexico that were examined<br />
for helminths in 1997 and 1998.<br />
Fish species Common name<br />
Sample<br />
size (n)<br />
Cyprinidae<br />
*Algansea tincella (Valenciennes in Cuvier and Valenciennes, 1844) Spottail chub 17<br />
jCyprinux carpio Linnaeus, 1758 Common carp 45<br />
'•'"Notropis sallei (Giinther, 18<strong>68</strong>) Azteca chub 37<br />
*Yuriria alta (Jordan, 1880) Lerma chub 49<br />
Goodeidae<br />
''Girardinichthys multiradiatiis (Meek, 1904) Darkedged splitfin 503<br />
'•'•Goodea atripinnis Jordan, 1880 Blackfin goodea 143<br />
*Xcnotoca variants (Bean, 1887) Jeweled splitfin 56<br />
Poeciliidae<br />
Poecilia sphenops Valenciennes //; Cuvier and Valenciennes, 1846 Mexican molly 23<br />
*Poeciliopxis infans (Woolman, 1894) Lerma livebearer 16<br />
Poeciliopsis sp. 13<br />
Atherinidae<br />
*Atherinella crystallina (Jordan and Culver ;'/; Jordan, 1895) Blackfin silverside 48<br />
*Chirostoma humboldtianitm (Valenciennes in Cuvier and Valenciennes,<br />
1835) Shortfin silverside 46<br />
*Chirostoma jordani: Woolman, 1894 Mesa silverside 64<br />
*Chirostoma labarcae Meek, 1902 Sharpnose silverside 3<br />
*Chirostoma riojai Solorzano and Lopez, 1966 Toluca silverside 78<br />
Cichlidae<br />
Cichlasoma beani (Jordan, 1889) Sinaloan cichlid 32<br />
Centrarchidae<br />
t Lepomis macrochirus Rafinesque, 1819 Bluegill 2<br />
Gobiidac<br />
Awaous tajasica (Lichtenstein, 1822) River goby 2<br />
* Species endemic to the Lerma-Santiago river basin.<br />
t Species introduced to the Lerma-Santiago river basin.<br />
complanatum, Diplostomum sp., P. minimum, C.<br />
formosanus, L. intestinalis, C. cf. ralli, P. caballeroi,<br />
P. cf. urseus, P. cochlearii, V. campylane<br />
ristrota, V. mutabills, Eustrongylides sp.,<br />
Contracaecum sp., and P. brevis. Three species<br />
are recent, anthropogenically introduced colonizers:<br />
C. formosanus, P. tornentosa, and B. acheilognathi,<br />
which is the most widely distributed<br />
species in the basin. Twelve of the 33 fish species<br />
examined have not previously been surveyed<br />
for parasites, and present data expand the<br />
spectrum of fish hosts, to the effect that the list<br />
provides 75 new records for hosts and locations.<br />
Discussion<br />
Only 8 fish species have been examined in<br />
sufficient numbers to enable evaluation of helminth<br />
community composition and structure: Algansea<br />
lacustris, Chirostoma estor, C. attenu-<br />
Copyright © 2011, The Helminthological Society of Washington<br />
atutn, Goodea atripinnis, Alloophorus robustus,<br />
Allotoca diazi, Micropterus salmoides, and Cyprinus<br />
carpio. Patzcuaro Lake has been systematically<br />
sampled, while other localities have only<br />
been sampled occasionally and with few fish examined.<br />
From large areas of the basin no data<br />
on fish parasites exist at all. There is also limited<br />
information on the parasites of fish in rivers and<br />
other water bodies. Parasitological knowledge<br />
for the Lerma-Santiago river basin is fragmentary,<br />
as many studies did not record all the helminth<br />
species because they were prepared for<br />
taxonomic ends, such as the description of a single<br />
species. As a result, most of the research in<br />
the basin merely indicates where data are most<br />
needed.<br />
A notable aspect of the present data is a highly<br />
characteristic endemic helminth component in<br />
the Lerma-Santiago river basin. Of the 43 re-