Egg development, hatching and early life-history of Dissonus manteri (Copepoda), parasitic on the gills of coral trout, Plectropomus leopardus

Bennett, S. M. (1999) Egg development, hatching and early life-history of Dissonus manteri (Copepoda), parasitic on the gills of coral trout, Plectropomus leopardus. International Journal of Parasitology, 29 2: 267-274. doi:10.1016/S0020-7519(98)00175-1


Author Bennett, S. M.
Title Egg development, hatching and early life-history of Dissonus manteri (Copepoda), parasitic on the gills of coral trout, Plectropomus leopardus
Formatted title
Egg development, hatching and early life-history of Dissonus manteri (Copepoda), parasitic on the gills of coral trout, Plectropomus leopardus
Journal name International Journal of Parasitology   Check publisher's open access policy
ISSN 0020-7519
1879-0135
Publication date 1999-02-01
Sub-type Article (original research)
DOI 10.1016/S0020-7519(98)00175-1
Volume 29
Issue 2
Start page 267
End page 274
Total pages 8
Place of publication Oxford, U.K.
Publisher Elsevier
Collection year 1999
Language eng
Subject C1
270599 Zoology not elsewhere classified
780105 Biological sciences
Formatted abstract
The early life-history of Dissonus manteri differs markedly from that of Caligidae and from that of its congener Dissonus nudiventris. The uniseriate egg strings are of typical caligid form, but the stage hatching from the egg is a pre-ecdysis nauplius which moults immediately to the copepodid. The empty naupliar cuticle remains tethered to the egg string by a pair of posterior threads which attach to the internal surface of the egg membrane. The duration of egg development is 112 h and the mean duration of hatching is 5.2 h at 25° C. Aeration and water movement are important for successful hatching. Under these conditions, hatching success is 94.8%, but decreases to 48.4% in static water with no aeration. Mean survival time of the copepodid in the absence of a host is 41.4 h at 25° C. The reduction of early free-living stages in the life-cycle and the high survival rate from egg to copepodid could be important in future coral trout aquaculture, since the potential for re-infection by this parasite is very high.
© 1999 Australian Society for Parasitology. Published by Elsevier Science Ltd. All rights reserved.
Keyword Parasitology
Dissonus
Copepod
Hatching
Ontogeny
Life-history
Coral Trout
Plectropomus Leopardus
Parasite
Gills
Lepeophtheirus-salmonis Copepoda
Caligidae
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biomedical Sciences Publications
 
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Created: Wed, 11 Jun 2008, 00:23:10 EST