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Revision of diplectanid monogeneans (Monopisthocotylea, Diplectanidae) in sillaginid fishes, with a description of a new species of Monoplectanum
Author(s) -
HAYWARD CRAIG J.
Publication year - 1996
Publication title -
zoologica scripta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.204
H-Index - 64
eISSN - 1463-6409
pISSN - 0300-3256
DOI - 10.1111/j.1463-6409.1996.tb00162.x
Subject(s) - biology , zoology , genus , sympatric speciation , ecology
Five species of diplectanids are described or redescribed on the basis of sclerotised parts, from a survey of 26 species of Sillaginidae in the Indo‐west Pacific. Diplectanum sillagonum Tripathi is widespread, and is recorded on Sillago sihama from tropical Australia north to Hong Kong and west to India, as well as on S. vincenti (in India) and S. attenuata (Persian Gulf). Diplectanum blairense Gupta & Khanna infects S. sihama and S. indica and is sympatric with D. sillagonum over some of its range (Hong Kong to India and south to Bali). Diplectanum flagritubus Nagibina is synonymised with D. blairense. Diplectanum puriense Tripathi is redescribed from S. chondropus in western Thailand, but was not found on specimens of its type host, Sillaginopsis panijus from the Bay of Bengal. Monoplectanum youngi sp. n. is described from Sillago analis, S. ciliata, S. sihama, S. parvisquamis, S. lutea and S. attenuata and is more widespread than D. sillagonum , extending into subtropical waters in Australia. Monoplectanum australe Young infects S. maculata and S. burrus , and appears to be endemic to Australia. The diagnosis of Monoplectanum , until now monotypic, is emended, the genus is unlikely to contain more new species on sillaginid fishes, and its two species probably share a common ancestor with D. blairense. Parasitological evidence favours a close relationship between Sillaginidae and Sciaenidae.