Comparative Parasitology 67(1) 2000 - Peru State College
Comparative Parasitology 67(1) 2000 - Peru State College
Comparative Parasitology 67(1) 2000 - Peru State College
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Comp. Parasitol.<br />
<strong>67</strong>(1), <strong>2000</strong> pp. 85-91<br />
Species of Sciadicleithrum (Dactylogyridae: Ancyrocephalinae) of<br />
Cichlid Fishes from Southeastern Mexico and Guatemala: New<br />
Morphological Data and Host and Geographical Records<br />
EDGAR MENDOZA-FRANCO, '-3 VICTOR VIDAL-MARTINEZ,' LEOPOLDINA AGUIRRE-MACEDO,'<br />
ROSSANNA RODRIGUEZ-CANUL,1 AND TOMAS SCHOLZ1'2<br />
1 Laboratory of <strong>Parasitology</strong>, Center for Research and Advanced Studies, National Polytechnic Institute<br />
(CINVESTAV-IPN), Carretera Antigua a Progreso Km. 6, A.P. 73 "Cordemex", C.P. 97310 Merida, Yucatan,<br />
Mexico (e-mail: mfranco@kin.cieamer.conacyt.mx), and<br />
2 Institute of <strong>Parasitology</strong>, Academy of Sciences of the Czech Republic, Branisovska 31,<br />
370 05 Ceske Budejovice, Czech Republic<br />
ABSTRACT: A survey of species of Sciadicleithrum (Monogenca: Dactylogyridae) from the gills of cichlid fishes<br />
from the Yucatan Peninsula of Mexico and neighboring regions is provided. Sciadicleithrum mexicanwn Kritsky,<br />
Vidal-Martfnez, and Rodrfguez-Canul is reported from Cichlasoma urophthalmus (type host), Cichlasoma aureum,<br />
and Petenia splendida (new host records) from Mexico, and Cichlasoma trimaculatum from Guatemala<br />
(new host and geographical record); Sciadicleithrum bravohollisae Kritsky, Vidal-Martfnez, and Rodrfguez-Canul<br />
from Cichlasoma geddesi, Cichlasoma lentiginosum, Cichlasoma managuense, Cichlasoma salvini, and Cichlasoma<br />
sp. (all new host records); Sciadicleithrum splendidae Kritsky, Vidal-Martfnez, and Rodrfguez-Canul<br />
from Cichlasoma friedrichstahli and C. managuense (new host records); and Sciadicleithrum rneekii Mendoza-<br />
Franco, Scholz, and Vidal-Martfnez from Cichlasoma callolepis, Cichlasoma helleri, and C. managuense (new<br />
host records) from Mexico. Data on morphological and biometrical variability of individual species from different<br />
hosts are provided. Species of Sciadicleithrum from Mexico and Guatemala exhibit wide host specificity. The<br />
present records expand distributional areas of all of the species of Sciadicleithrum studied.<br />
KKY WORDS: Sciadicleithrum, Monogenea, Dactylogyridae, Cichlidae, host specificity, zoogeography, Mexico,<br />
Guatemala.<br />
Sciadicleithrum was proposed by Kritsky et<br />
al. (1989) to accommodate 9 species of Ancyrocephalinae<br />
(Monogenea: Dactylogyridae)<br />
from cichlid fishes from South America. Since<br />
then, 4 other species have been described from<br />
cichlids of the Peninsula of Yucatan, Mexico,<br />
namely Sciadicleithrum mexicanwn Kritsky, Vidal-Martfnez,<br />
and Rodrfguez-Canul, 1994, from<br />
Cichlasoma urophthalmus (Gunther, 1862);<br />
Sciadicleithrum bravohollisae Kritsky. Vidal-<br />
Martfnez, and Rodrfguez-Canul, 1994, from<br />
Cichlasoma pearsei (Hubbs, 1936), Cichlasoma<br />
synspilum Hubbs, 1935, and Petenia splendida<br />
Gunther, 1862; Sciadicleithrum splendidae Kritsky,<br />
Vidal-Martfnez, and Rodrfguez-Canul,<br />
1994, from Petenia splendida; and Sciadicleithrum<br />
meekii Mendoza-Franco, Scholz, and Vidal-<br />
Martfnez, 1997, from Cichlasoma meeki (Brind,<br />
1918) (Kritsky et al., 1994; Mendoza-Franco et<br />
al., 1997).<br />
During a recent helminthological study on<br />
cichlid fishes from southeastern Mexico, monogeneans<br />
assigned to Sciadicleithrum were found<br />
-' Corresponding author.<br />
on the gills of several species of Cichlidae, including<br />
hosts not reported previously. This new<br />
material allowed us to supplement the original<br />
descriptions (sometimes based on a limited number<br />
of specimens) by morphological and biometrical<br />
data on intraspecific variability of individual<br />
species from different fish hosts. Numerous<br />
new host and geographical records also<br />
made it possible to evaluate the specificity of<br />
species of Sciadicleithrum from the Yucatan<br />
Peninsula.<br />
Material and Methods<br />
Cichlids were collected by line and hook, throw<br />
nets, or electrofishing from the following localities<br />
in southeastern Mexico and Guatemala: Mexico.<br />
<strong>State</strong> of Chiapas: Cedros River (16°45'21"N;<br />
91°09'30"W) and Lacanja River (16°46'21"N;<br />
91°04'21"W). <strong>State</strong> of Tabasco: Santa Anita Lagoon<br />
(18°22'15"N; 92°53'10"W); El Yucateco Lagoon<br />
(18°11'33"N<br />
(18°25'35"N<br />
(17°59'46"N<br />
(18°14'57"N<br />
(18°00'37"N<br />
94°00'35"W); Parafso River<br />
93°12'00"W); Ilusiones Lagoon<br />
92°56'17"W); Horizonte Lagoon<br />
92°49'59"W); Yumka Lake<br />
92°48'12"W); Puyacatengo River<br />
(17°34'58"N; 92°53'22"W). <strong>State</strong> of Campeche: Palizada<br />
River (18°17'16"N; 91°56'52"W); Silvituc La-<br />
Copyright © 2011, The Helminthological Society of Washington
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