Comparative Parasitology 67(2) 2000 - Peru State College

Comp. Parasitol.
67(2), 2000 pp. 145-164
Diplectanids (Monogenoidea: Dactylogyridea) from the Gills of
Marine Fishes of the Persian Gulf off Kuwait
DELANE C. KRITSKY,M F. AGUSTIN JiMENEZ-Ruiz,2 AND OTTO SEY3
1 Department of Health and Nutrition Sciences, College of Health Professions, Box 8090, Idaho State
University, Pocatello, Idaho 83209, U.S.A. (e-mail: kritdela@isu.edu),
2 Laboratorio de Helmintologfa, Institute de Biologia, National Autonomous University of Mexico (UNAM),
Apartado Postal 70-153, Ciudad de Mexico D.F., Mexico, and
3 Department of Zoology, University of Kuwait, P.O. Box 5969, Safat 13060, Kuwait; current address: H-7633
Pecs, Ercbanyasz u. 10, Hungary
ABSTRACT: Seventeen species of Diplectanidae were collected from the gills of 17 species of marine fishes from
the Persian Gulf off Kuwait. Lepidotrema kuwaitcnsis sp. n. from Terapon puta (Teraponidae), Lamellodiscus
furcillatus sp. n. from Diplodus noct (Sparidae), and Protolamellodiscus senilobatus sp. n. from Argyrops spinifer
and A. filamentosus (Sparidae) are described. Diplectanum cazauxi from Sphyraena jello and S. obtusata (Sphyraenidae)
(new host and geographic records), D. sillagonum from Sillago siharna (Sillaginidae) (new geographic
record), Pseudolarnellodiscus sphyraenae from Sphyraena chrysotaenia (Sphyraenidae) (new host and geographic
records), and Calydiscoides flexuosus from Nemipterus peronii and N. bipunctatus (Nemipteridae) (new host
and geographic records) are redescribed. An incidental geographic record for C. flexuosus on N. japonicus from
the western coast of India is included. Ten diplectanid species from 8 hosts were unidentified for lack of sufficient
specimens. Diplectanum longipenis (synonym: Squamodiscus longipenis) is transferred to Lepidotrema. Squamodiscus
is removed from synonymy with Diplectanum and becomes a junior subjective synonym of Lepidotrema.
Calydiscoides indianus (synonyms: Lamellospina Indiana and C. indicus) is a junior subjective synonym
of C. flexuosus.
KEY WORDS: Monogenoidea, monogenean, Diplectanidae, Calydiscoides flexuosus, Diplectanum cazauxi, Diplectanum
sillagonum, Diplectanum sp., Lamellodiscus furcillatus sp. n., Lamellodiscus sp., Lepidotrema kuwaitensis
sp. n., Lepidotrema longipenis comb, n., Protolamellodiscus senilobatus sp. n., Pseudolamellodiscus
sphyraenae, Pseiidorhabdosynochus sp., Acanthopagrus berda, Acanthopagrus bifasciatus, Acanthopagrus latus,
Argyrops filamentosus, Argyrops spinifer, Diplodus noct, Epinephelus areolatus, Epinephelus tauvina, Hemiramphus
marginatus, Nemipterus bipunctatus, Nemipterus peronii, Otolithes argenteus, Sillago sihama, Sphyraena
chrysotaenia, Sphyraena jello, Sphyraena obtusata, Terapon puta, Persian Gulf, Kuwait.
A survey of the helminth parasites infesting described by Kritsky et al. (1986). Measurements, all
marine fishes off the Kuwaiti coast by O.S. was in njicrometers, were made with a filar micrometer ac-
_. . *nn~ ?n i- cording to procedures of Mizelle and Klucka (1953);
conducted between October 1992 and December average measurements are followed by ranges and
1996. Species of Diplectanidae (Monogenoidea) number (n) of specimens measured in parentheses; unwere
found on the gills of 17 marine fishes rep- stained flattened specimens mounted in Gray and
resenting the Hemiramphidae, Nemipteridae, Wess' medium were used to obtain measurements of
Sciaenidae, Serranidae, Sillaginidae, Sparidae, the hap'oral sclerites and copulatory complex; other
„ . . , , m • j rr,, .
Sphyraemdae, and Teraponidae. The present pa-
^ J f . .
per includes descriptions and taxonomic considmeasurements
were obtained from unflattened specit
. , . „ ., t . , . v, .
mens stained in Gomon s tnchrome and mounted in
Canada balsam; the dimension of the pyriform ovary
erations of 3 new and 5 previously described is the greatest width. Numbering of hook pairs follows
species. the scheme proposed by Mizelle (1936; see Mizelle
and Price, 1963). Type specimens of new species and
Materials and Methods voucher specimens of previously described species
, . , . i i , /- . i . «•
Hosts were obtained from the local fish market, Ku-
, , ,. . ,. , . . . . ' .
wait, and examined directly tor helminth parasites. Diplectanids
were removed from the gills of respective
were deposited in the United States National Parasite
_, „ . /T TOXT~,x r» i* -n A* , ^ ^ ,
Collection (USNPC), Beltsville, Maryland, and the
, , - , ,, • r- i. TT • • AT i , n
helminth collection of the University of Nebraska State
hosts, fixed, and stored as described by Sey and Nah- Museum (HWML), Lincoln, Nebraska, U.S.A., as mhas
(1997); vials containing the helminths were then dlcated m the respective species accounts. For cornshipped
to Idaho State University. Methods of staining, Paratlve Purposes, the following specimens were exmounting,
and illustration of diplectanids were those ammed: 3 voucher specimens of Lepidotrema tenue
Johnston and Tiegs, 1922 (USNPC 63156); 4 voucher
specimens of Lepidotrema bidyana Murray, 1931
4 Corresponding author. (USNPC 63157); 5 voucher specimens of Lepidotrema
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