A New Species of Gnathiid (Crustacea: Isopoda) Parasitizing Teleosts from Lizard Island, Great Barrier Reef, Australia

Ferreira, M.L., Smit, N.J., Grutter, A.S. and Davies, A.J. (2009) A New Species of Gnathiid (Crustacea: Isopoda) Parasitizing Teleosts from Lizard Island, Great Barrier Reef, Australia. Journal of Parasitology, 95 5: 1066-1075. doi:10.1645/GE-1920.1

Author Ferreira, M.L.
Smit, N.J.
Grutter, A.S.
Davies, A.J.
Title A New Species of Gnathiid (Crustacea: Isopoda) Parasitizing Teleosts from Lizard Island, Great Barrier Reef, Australia
Journal name Journal of Parasitology   Check publisher's open access policy
ISSN 0022-3395
Publication date 2009-10
Year available 2009
Sub-type Article (original research)
DOI 10.1645/GE-1920.1
Volume 95
Issue 5
Start page 1066
End page 1075
Total pages 10
Editor G. W. Esch
Place of publication United States
Publisher American Society of Parasitologists
Collection year 2010
Language eng
Subject 070404 Fish Pests and Diseases
960506 Ecosystem Assessment and Management of Fresh, Ground and Surface Water Environments
Formatted abstract
During March 2002 and November 2005, teleost fishes were collected at Lizard Island, Great Barrier Reef (GBR), Australia. Gnathiid isopod juveniles were allowed to detach from these host fishes and were maintained in fresh seawater until they molted into adults. Adult males emerged 5 days post-detachment (d.p.d.) and females 10 d.p.d. of juveniles from host fish. The adults and juveniles were identified as new to science and described as Gnathia aureamaculosa n. sp. The species description is based on brightfield and scanning electron microscopy observations primarily of males, since the taxonomy of gnathiids is based on male morphology. This species has been widely employed in various studies on the Great Barrier Reef, from its involvement in feeding patterns in reef fish to its role in transmitting blood parasites, and has been referred to as Gnathia sp. A. Distinctive features of the male include gold-spotted pigmentation on the dorsal pereon of live specimens, a cephalosome with a conical superior fronto-lateral process, an inferior and conical medio-frontal process, and mandibles, each with an armed carina and an internal lobe. The female is characterized by its broad, rounded shape and cephalosome setae. The mandible of the third stage juvenile has 2 small teeth on the tip and 7 large teeth on the mesial margin. Differential pigmentation occurs in live male and female third-stage juveniles; females have greenish-yellow spots distributed over the pereon and males have white blotches and light brown and yellow spots on the pereon.
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Biological Sciences Publications
Ecology Centre Publications
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Citation counts: TR Web of Science Citation Count  Cited 15 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 24 Nov 2009, 14:19:06 EST by Hayley Ware on behalf of School of Biological Sciences