Capillaria plectropomin. sp. (Nematoda: Capillariidae), a new intestinal parasite of the leopard coral grouperPlectropomus leopardus(Serranidae) off New Caledonia

Abstract

A new nematode species, Capillaria plectropomi n. sp. (Capillariidae), is described from the intestine of the leopard coral grouper Plectropomus leopardus (Lacepède) from coral reefs off New Caledonia. The new species, belonging to the subgenus Neocapillaria Moravec, 1987, differs from other congeneric species of this subgenus from marine fishes mainly in the length (168–186 μm), shape and structure of the spicule. It is characterized, in the male, by the presence of two well-developed dorsolateral caudal lobes, a pair of lateral papillae, a heavily sclerotized spicule with many rough transverse grooves in the middle part, a spinose spicular sheath, and in the female, by eggs measuring 60–66 × 27 μm without protruding polar plugs. The buccal cavity contains a small finger-shaped stylet. Capillaria plectropomi n. sp. is the first known species of this genus parasitizing fishes of the perciform family Serranidae.

Lobocapillaria austropacifica n. g., n. sp. (Nematoda: Capillariidae) from the obtuse barracuda Sphyraena obtusata Cuvier (Sphyraenidae, Perciformes) off eastern Australia

“…However, this method has so far been rarely applied to these nematodes. It is apparent from this study that the structure of the lips, the shape of the oral aperture and the number and arrangement of the cephalic papillae of L. austropacifica are similar to those described by Baruš et al (1981) in Capillaria anatis (Schrank, 1790), by Moravec (2001b) in Paracapillaria philippinensis (Chitwood, Velasquez & Salazar, 1968), by González-Solís et al (2014) in Capillostrongyloides morae González-Solís, Carrassón & Pérez-del-Olmo, 2014 and by Moravec & Justine (2014) in Capillaria plectropomi Moravec & Justine, 2014. However, in contrast to species of Capillaria, Capillostrongyloides and Paracapillaria studied by the above-mentioned authors, the lobes of each of the two internal cephalic mounds supporting the lips of L. austropacifica are bipartite (vs undivided) and a stylet is absent (vs present Parasites of digestive tract of freshwater fishes ……………………………… Freitascapillaria 6b Posterior extremity of male not markedly expended laterally.…”

“…To date, it includes ten nominal species: three of them, Capillostrongyloides tandani (Johnston & Mawson, 1940), Paracapillaria plectroplites (Johnston & Mawson, 1940) and Pseudocapillaria nannupensis Hobbs & Hassan, 2010, were described from freshwater fishes, whereas seven others, Capillaria cooperi Johnston & Mawson, 1945, Capillostrongyloides physiculi (Johnston & Mawson, 1945), C. tasmanica (Johnston & Mawson, 1945), Gessyella latridopsis (Johnston & Mawson, 1945), Piscicapillaria orectolobi (Johnston & Mawson, 1951), P. rhinobati (Johnston & Mawson, 1945) and ''Capillaria'' lepidopodis Johnston & Mawson, 1944 (species inquirenda and incertae sedis), were reported from marine teleosts and elasmobranchs (Johnston & Mawson, 1940, 1944, 1945a, b, 1951Moravec, 1987Moravec, , 2001aHobbs & Hassan, 2010). An additional three nominal species of capillariids, Capillaria plectropomi Moravec & Justine, 2014, Pseudocapillaria echenei (Parukhin, 1967 and P. novaecaledoniensis Moravec & Justine, 2010, were found in marine fishes off nearby New Caledonia (Moravec & Justine, 2010. However, since the taxonomy of capillariids is mainly based on male characteristics, these parasites are frequently unidentified in faunistic surveys, being reported only as Capillaria (s.l.)…”

Phylum Nematoda: trends in species descriptions, the documentation of diversity, systematics, and the species concept

“…Significantly, the estimated total number of nematode species associated with invertebrates has increased as a result of extensive collecting and detailed molecular work concentrated on particular taxonomic groups of nematodes or hosts (Bartholomaeus et al 2012, Davies et al 2010a, b, 2012a, b, 2013a, b, 2014a, b, c, d, e, 2015, Zhao et al 2013a, b, 2015. Similar increases in numbers of species have been observed in some nematode groups associated with particular vertebrates (Fenner et al 2011, Justine & Iwaki 2014, Moravec & Ali 2014, Moravec & Barton 2015, Moravec & Diggles 2014a, b, Moravec & Jirku 2014a, b, 2015, Moravec & Justine 2014a, b, Moravec & Monoharan 2014a, b, Moravec & Van As 2015a, b, Moravec et al 2014, b, Purwaningsih & Smales 2010, Smales 2010, 2011a, b, c, 2012, Smales & Heinrich 2010, Spratt 2010,Weaver & Smales 2010. This highlights that the interests and areas of expertise of the most active systematists can have a strong influence on apparent diversity of particular groups, rather than the real biological diversity.…”

Occurrence and intensity of hepatic capillariasis in the barbel (Barbus rebeli) from the river Crn Drim in the Republic of Macedonia

“…In general, knowledge of capillariid nematodes in fish species is scarce and often they remain unidentified. However limited information for capillariasis has been recorded in the literature for some fish species (Simá et al 1996;Roganovic-Zafirova et al 2003;Moravec & Justine 2014).…”