Three members of Opisthomonorcheides Parukhin, 1966 (Digenea: Monorchiidae) from carangid fishes (Perciformes) from Indonesia, with a review of the genus

Autor: Bray, R.A., Palm, H.W., Cutmore, C.C., Cribb, T.H.
In:

Systematic Parasitology

Auflage: 94
ISBN: 0165-5752
DOI: 10.1007/s11230-017-9717-5
Seite: 443 - 462
Jahr: 2017

Einordung:
Institut: Professur Aquakultur und Sea-Ranching

Abstract:
Three species of Opisthomonorcheides
Parukhin, 1966 are reported for the first time from
Indonesian waters: O. pampi (Wang, 1982) Liu, Peng,
Gao, Fu, Wu, Lu, Gao & Xiao, 2010 and O. ovacutus
(Mamaev, 1970) Machida, 2011 from Parastromateus
niger (Bloch), and O. decapteri Parukhin, 1966 from
Atule mate (Cuvier). Both O. pampi and O. ovacutus
can now be considered widespread in the Indo-Pacific
region, with earlier records of these species being from
Fujian Province, China and Penang, Malaysia, respectively.
We redescribe O. decapteri from one of its
original hosts, Atule mate, off New Caledonia, and
report this species from Jakarta Bay, Indonesia,
extending its range throughout the Indian Ocean into
the south-western Pacific. All three species possess a
genital atrium that is long, sometimes very long, and a
genital pore that is located in the forebody. This
validates the interpretation that the original description
was erroneous in reporting the genital pore in the
hindbody, well posterior to the ventral sucker. These
observations verify the synonymy of Retractomonorchis
Madhavi, 1977 with Opisthomonorcheides.
A major discrepancy between the species of
Opisthomonorcheides is that some are described with
the uterus entering the terminal organ laterally and
some with it entering terminally; this feature needs
further analysis. Based on the length of the genital
atrium and the posterior extent of the vitellarium, the
27 species of Opisthomonorcheides considered valid
can be divided into four groups. Among the 53 host
records analysed, the families Carangidae (53% of
records), Stromateidae (17%) and Serranidae (5.7%)
are the most common; the reports are overwhelmingly
from members of the Perciformes (91%), with further
records in the Clupeiformes (5.7%), Gadiformes
(1.9%) and Pleuronectiformes (1.9%). Two fish genera

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