title: Taxonomical study into two new species of Philometra (Nematoda: Philometridae) previously identified as Philometra lateolabracis (Yamaguti, 1935).
abstract: Males of the nematode Philometra lateolabracis (Yamaguti, 1935), the type species of the genus Philometra Costa, 1845, were discovered for the first time in gonads of its type host, the Japanese seaperch, Lateolabraxjaponicus (Cuvier). Morphological comparisons carried out between the collected male and female P. lateolabracis with the male and female philometrid nematodes previously reported as P. lateolabracis infecting chicken grunt, Parapristipoma trilineatum (Thunberg), and red sea bream, Pagrus major (Temminck et Schlegel), revealed that the latter represent two new species, Philometra isaki sp. n. and Philometra madai sp. n., respectively. Molecular comparison of ITS2 rDNA between P. lateolabracis and P. madai supported the morphological conclusion that the two nematodes obtained from different fish species should be assigned to different species.
authors.affiliation: Department of Aquatic Biosciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan.
authors.forename: Karl Marx A
authors.initials: KM
authors.lastname: Quiazon
authors.forename: Tomoyoshi
authors.initials: T
authors.lastname: Yoshinaga
authors.forename: Kazuo
authors.initials: K
authors.lastname: Ogawa
mesh_terms: D000818:Animals; D018509:DNA, Helminth / Q000737:chemistry / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000737:chemistry / Q000235:genetics; D005260:Female; D006066:Gonads / Q000469:parasitology*; D008297:Male; D008853:Microscopy; D008855:Microscopy, Electron, Scanning; D009348:Nematoda / Q000033:anatomy & histology / Q000145:classification* / Q000302:isolation & purification* / Q000648:ultrastructure; D010473:Perciformes / Q000469:parasitology*; D017422:Sequence Analysis, DNA
chemical_list: D018509:DNA, Helminth; D021903:DNA, Ribosomal Spacer