Three new host records for the marine fish ectoparasite, <i>Nerocila phaiopleura</i> (Isopoda: Cymothoidae), with a list of its known hosts

Abstract

Abstract. The cymothoid isopod Nerocila phaiopleura Bleeker, 1857 is a skin parasite of actinopterygian fishes in the Indo-West Pacific. The isopod is reported from three species of fishes, viz

New Record of a Marine Fish Parasite <i>Nerocila trichiura</i> (Crustacea: Isopoda: Cymothoidae) from Japan, with its Confirmed Distribution in the Western North Pacific Ocean

“…The observed disease conditions were most probably induced by the skin feeding and deep insertion of the pereopod's dactyli of the species. Similar skin wounds are also found on marine fishes infested by N. phaiopleura in Japanese waters (Nagasawa and Tensha 2016;Nagasawa and Shirakashi 2017;Nagasawa and Isozaki 2017;Nagasawa and Kawai 2018).…”

“…In this study, the individual of Cypselurus hiraii infested with N. trichiura was collected in Kowaura Bay, central Japan, from which two other species of cymothoid isopods have been reported: Ceratothoa verrucosa (Schioedte and Meinert, 1883) from the crimson seabream, Evynnis tumifrons (Temminck and Schlegel, 1843) (Nagasawa and Isozaki 2016), and Nerocila phaiopleura from the Japanese barracuda, Sphyraena japonica Bloch and Schneider, 1801, the Japanese jack mackerel, Trachurus japonicus (Temminck and Schlegel, 1844), and the round herring, Etrumeus micropus (Temminck and Schlegel, 1846) (Nagasawa and Isozaki 2017).…”

“…The body surface-attaching cymothoid genus Nerocila Leach, 1818 currently comprise 43 valid species (Trilles 1975;Bruce 1987;Bokyo et al 2019). Little information is available on the cymothoids of the genus infesting Japanese fishes, and only two nominal species have been reported from Japan to date (Yamauchi 2016): Nerocila japonica Schioedte and Meinert, 1881 from 17 species of wild fishes in 10 families (Cyprinidae, Mugillidae, Latidae, Lateolabracidae, Sparidae, Embiotocidae, Terapontidae, Labridae, Gobiidae, Monacanthidae) from central and western Japan and from one species of farmed fish (Kyphosidae) from central Japan (Yamauchi and Nagasawa 2012;Nagasawa and Kawai, 2019); and Nerocila phaiopleura Bleeker, 1857 from eight species of wild fishes in six families (Clupeidae, Dussumieriidae, Engraulidae, Carangidae, Scombridae, Sphyraenidae) from central and western Japan and from one species of farmed fish (Scombridae) from central Japan (Mitani 1982;Bruce and Harrison-Nelson 1988;Nagasawa and Tensha 2016;Nagasawa and Shirakashi 2017;Nagasawa and Isozaki 2017;Nagasawa and Nakao 2017;Nagasawa and Kawai 2018).…”

<i>Nerocila phaiopleura</i> (Isopoda: Cymothoidae): a new record from Ibaraki Prefecture, central Japan, with a discussion of its distribution in Japanese waters

“…Isopods of the cymothoid genus Nerocila are skin parasites of marine fishes (Bruce, 1987). Currently, three nominal species of the genus are known from Japan: Nerocila phaiopleura Bleeker, 1857 (see Nagasawa & Isozaki, 2017), N. japonica Schioedte & Meinert, 1881 (Yamauchi & Nagasawa, 2012;Nagasawa & Tawa, 2019), and N. trichiura (Miers, 1877) (Nagasawa & Isozaki, 2019). In 1982, N. phaiopleura was reported for the first time from Japan (Mitani, 1982), where the species has since been recorded from nine species of coastal wild fishes (3 species from the Clupeidae, 1 species from the Dussumieriidae, 1 species from the Engraulidae, 1 species from the Carangidae, 2 species from the Scombridae, 1 species from the Sphyraenidae: Nagasawa & Isozaki, 2017) and from farmed Pacific bluefin tuna, Thunnus orientalis (Temminck & Schlegel, 1844) (Scombridae) (Nagasawa & Shirakashi, 2017).…”

“…The scientific and common names of fishes mentioned in this paper follow Froese & Pauly (2019), except for Sardinops melanostictus, which follows Nakabo (2013). Previously, the generic name of this fish was incorrectly reported as Sardinopsis by Nagasawa and his coauthors (Nagasawa & Tensha, 2016;Nagasawa & Shirakashi, 2017;Nagasawa & Isozaki, 2017). Sardinops is the correct generic name of Japanese sardine.…”