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An environmental assessment of the parasite fauna of the reef-associated grouper Epinephelus areolatus from Indonesian waters

Published online by Cambridge University Press:  25 October 2012

S. Kleinertz ,
I.M. Damriyasa ,
W. Hagen ,
S. Theisen  and
H.W. Palm
S. Kleinertz*
Affiliation:
Aquaculture and Sea-Ranching, Faculty of Agricultural and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, D-18059Rostock, Germany Leibniz Center for Tropical Marine Ecology GmbH, Fahrenheitstr. 6, D-28359Bremen, Germany
I.M. Damriyasa
Affiliation:
Center for Studies on Animal Disease, Faculty of Veterinary Medicine, Udayana University, Kampus Bukit Jimbaran, Bali80361, Indonesia
W. Hagen
Affiliation:
Marine Zoology, BreMarE Bremen Marine Ecology Centre for Research & Education, Bremen University, Leobener Straße, D-28359Bremen, Germany
S. Theisen
Affiliation:
Aquaculture and Sea-Ranching, Faculty of Agricultural and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, D-18059Rostock, Germany
H.W. Palm
Affiliation:
Aquaculture and Sea-Ranching, Faculty of Agricultural and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, D-18059Rostock, Germany
*
*Fax: +49 (0)641 99 38469 E-mail: [email protected]
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Abstract

Sixty Epinephelus areolatus were examined for metazoan fish parasites in Indonesia, off Segara Anakan lagoon, Java and in Balinese waters. The study revealed 21 different parasite species, and 14 new host and locality records. The anisakid nematodes Anisakis typica and, for the first time in Indonesia, Anisakis sp. HC-2005 were identified by using molecular methods. Ecological parameters were calculated for both sites off the anthropogenically influenced Segara Anakan lagoon and the relatively undisturbed reference site at the southern Balinese coast. The fish from Segara Anakan demonstrated a significantly higher enzymatic activity (Hepatosomatic index) and a significantly reduced number of heteroxenous gut helminths (e.g. the digenean Didymodiclinus sp., the nematode Raphidascaris sp. and the acanthocephalan Serrasentis sagittifer). Other regional differences for E. areolatus included ecto-/endoparasite ratio, endoparasite diversity, the parasite species composition and prevalence of infection of the respective parasite species. We applied the stargraph method to visualize observed regional differences using grouper parasites as biological indicators for the sampled coastal ecosystems at both sampling sites.

Type
Research Papers
Information
Journal of Helminthology , Volume 88 , Issue 1 , March 2014 , pp. 50 - 63
Copyright
Copyright © Cambridge University Press 2012 

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