Crustacean fish parasites from Segara Anakan Lagoon, Java, Indonesia

Abstract

The present study is the first investigation on ectoparasites of commercial important fish from Segara Anakan, a brackish water lagoon located at the southern coast of Java, Indonesia. Eight economically important marine fish species (Mugil cephalus, Siganus javus, Scatophagus argus, Caranx sexfasciatus, Lutjanus johnii, Eleutheronema tetradactylum, Johnius coitor, and Epinephelus coioides) were examined for crustacean parasites. Prevalence and intensity data for each parasite species are given, together with an analysis of the origin and possible transmission pathways. A highly divers copepod fauna consisting of 23 different species and two isopods was found. All fish species were at least infested with two copepod species, with the exception of L. johnii, S. argus, and M. cephalus. With seven and six species, respectively, they harboured the most species-rich ectoparasite fauna. The copepods Ergasilus sp. 3 and Caligus acanthopagri on S. argus showed the highest prevalence (78.6) and intensity [17.8 (1-233) and 5.3 (1-22)] of infestation. The recorded parasite fauna is represented by marine, brackish water, and probably also freshwater components. The brackish water environment of Segara Anakan does not prevent disease outbreaks due to parasitic copepods by preventing pathogenic marine or freshwater species to enter the lagoon. This might cause fish health problems if the Segara Anakan Lagoon would be developed for finfish mariculture in future.

Parasites of the grouper fishEpinephelus coioides(Serranidae) as potential environmental indicators in Indonesian coastal ecosystems

“…from E. coioides from Segara Anakan lagoon; it was also recorded within the present study but so far not identified to the species level. This provides further evidence for the high parasite biodiversity in Indonesian waters Palm, 2000;Carpenter & Springer, 2005;Yuniar et al, 2007), encouraging further parasitological studies within the region. Most recently, Justine et al (2010) added one more parasite record, Argathona rhinoceros, for E. coioides from New Caledonian waters.…”

A new species of <I>Thysanote</I> Krøyer, 1863 (Copepoda: Siphonostomatoida: Lernaeopodidae), a fish parasite from Thailand

“…It is worth to mention, however, that Thysanote sp., recently found by Yuniar et al (2007) in Indonesia, from the same fish, is probably conspecific with the one presently described by us. The paper of Yuniar et al (2007) contains only overall photograph with no morphological description and therefore the parasite is identified at the generic level only.…”

Effect of the parasitic isopod, Catoessa boscii (Isopoda, Cymothoidae), a buccal cavity parasite of the marine fish, Carangoides malabaricus

“…A low prevalence of 14% and a new occurrence of isopod Cymothoa sp. have been found in Seagara Anakan Lagoon, Indonesia [21] . The size of fishes that can be infested will be within certain maximumminimum variables depending upon the species of host [9] .…”