Environmental conditions at sea-cages, and ectoparasites on farmed European sea-bass, Dicentrarchus labrax (L.), and gilt-head sea-bream, Sparus aurata L., at two farms in Greece

dc.contributor.author	Papoutsoglou, S	en
dc.contributor.author	Costello, MJ	en
dc.contributor.author	Stamou, E	en
dc.contributor.author	Tziha, G	en
dc.date.accessioned	2014-06-06T06:43:02Z
dc.date.available	2014-06-06T06:43:02Z
dc.date.issued	1996	en
dc.identifier.issn	1355557X	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/963
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0029669255&partnerID=40&md5=56f01a682cc30821a718b7bd68e8a282	en
dc.subject.other	Dicentrarchus labrax	en
dc.subject.other	Sparus aurata	en
dc.subject.other	Diplectanum aequans	en
dc.subject.other	Dipletanum aequans	en
dc.subject.other	Furnestinia echeneis	en
dc.subject.other	Sparicotyle chrysophrii	en
dc.subject.other	ectoparasite	en
dc.subject.other	ectoparasites	en
dc.subject.other	environmental conditions	en
dc.subject.other	European sea bass	en
dc.subject.other	fish culture	en
dc.subject.other	gilthead seabream	en
dc.subject.other	sea cage	en
dc.subject.other	sea-cages	en
dc.subject.other	Greece	en
dc.title	Environmental conditions at sea-cages, and ectoparasites on farmed European sea-bass, Dicentrarchus labrax (L.), and gilt-head sea-bream, Sparus aurata L., at two farms in Greece	en
heal.type	journalArticle	en
heal.publicationDate	1996	en
heal.abstract	Water quality in sea-cages, and metazoan ectoparasites on bass, Dicentrarchus labrax (L.), and bream, Spams aurata L., were sampled at two fish farms in south-west Greece over 2 years. The seabed and marine life around the cages of one farm was surveyed using scuba. The most frequent and abundant parasites were the monogeans Sparicotyle chrysophrii and Furnestinia echeneis on the gills of bream, and Dipletanum aequans on the gills of bass. The copepod Caligus minimus occasionally occurred in the buccal cavity of bass, but only in low numbers. Prevalence and abundance of parasites increased with bass size but E echeneis levels decreased with bream size. There were no other clear relationships between water quality, parasite levels and fish size. Ammonia varied seasonally with sea temperature, and with oxygen levels below 6 mg l-1 on many occasions, it is possible that fish suffered stress from a combination of high ammonia and low oxygen conditions. There was no accumulation of waste food or faeces below the cages at the one farm surveyed, but there were thousands of wild fish, including mullet (Mugilidae), Spicara sp. and Diplodus spp., present around the cages. Water quality may be improved by changes in farm management, such as reducing stocking densities below the present 16 kg m-3. Oxygen should be monitored at the cages on site daily. How comparable environmental conditions and impacts, and parasitization are at other bass and bream sea cage farms is unknown.	en
heal.journalName	Aquaculture Research	en
dc.identifier.issue	1	en
dc.identifier.volume	27	en
dc.identifier.spage	25	en
dc.identifier.epage	34	en