Corlis, David (2004) Four new genera of monogenea (Dactylogridae) from the gills of Australian atheriniform freshwater fishes. Memoirs of the Queensland Museum, 49 (2). pp. 537-572.

PDF (Published Version) - Published Version Restricted to Repository staff only

4

Abstract

To date only 26 monogenean parasite species have been described from Australian freshwater fishes. In this study freshwater fishes of the Athcriniformes. represented in Australia by the Melanotaeniidae. Atherinidae and Pseudomugilidae, were examined for monogenean gill parasites. Nineteen new dactylogyrid monogeneans are described; Longidigitis auripontiformis gen. et sp. nov., L. rabustus sp. nov., lliocirrus iliocirrus gen. et sp. nov., Helicirrus sp/endidae gen. et sp. nov. and H. megaloanchor sp. nov. from Melanotaenia splendida sp/endida (peters, 1876); L. graCilis sp. nov. from M. utcheensis McGuigan, 2001; I. mazlini sp. nov. from M. eachamensis; L. maccullochii sp. nov. and H. maccullochii sp. nov. from M. maccullochi Ogilby, 1915; I. trifasciatae sp. nov., H. mcivor; sp. nov. and L. hopevalensis sp. nov. from M. trifasciata (Rendahl, 1922); I. ornatusi sp. nov. from Rhadinocentrus ornatus Regan, 1914; L. ulcheei sp. nov. from Cairnsichthys rhombosomoides (Nichols & Raven, 1928); Recurvatus chelatus gen. et sp. nov. and 1. rossi sp. nov. from Craterocephalus stercusmusearum stercusmuscarum (Gunther, 1867); H. marjoriaea sp. nov. from Cralerocephalus mary'on'ae Whitley> 1948; R. signiferi sp. nov. from Pseudomugil signifer Kner, 1865; and H gerlrudaea sp. nov. from Pseudomugil gertrudae Weber, 1911. Lollgidigitis, lliocirrus, Helicin'us and Reeunatus are defined by copulatory apparatus morphology of which 4 types are recognised. Species are recognised on morphological and morphometric variation of haptoral sclerites as well as copulatory apparatus morphology. Multivariate analysis of variance, principal component analysis and discriminant function analysis of morphometric variation are used to assess congruence of genera and species initially distinguished by morphology. Multivariate analysis identified significant differences (p<O.Ol) between species within each genus for 24 measured haptorai sclerite characters. Principal component analysis corroborated the species recognised by morphology, and discriminant function analysis identified morphometric characters that can best identify genera and species. Discriminant function analysis cross-validation classified 97. 1 % of the 591 measured parasites into their correct genus, and 99.5% were classified correctly into their respective species based on haptoral sclerite morphometric variation alone.

Actions (Repository Staff Only)

Item Control Page