Parasites of cultured and wild brown-marbled grouper Epinephelus fuscoguttatus (Forsskal, 1775) in Lampung Bay, Indonesia

Parasites of cultured and wild brown-marbled grouper Epinephelus fuscoguttatus (Forsskal, 1775) in Lampung Bay, Indonesia
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印度尼西亚楠榜湾人工养殖和野生棕色大理石石斑鱼 Epinephelus fuscoguttatus(Forsskal,1775)的寄生虫

DOI:
10.1111/j.1365-2109.2009.02403.x
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发表时间:
2009
影响因子:
2
通讯作者:
Palm H.W.
Palm H.W.
中科院分区:
农林科学4区
文献类型:
--
作者:
Rückert S;Klimpel S;Palm H.W.

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对总共 210 条褐斑石斑鱼(棕色大理石石斑鱼)进行了寄生虫检查。在连续三个季节(2002年至2004年两个雨季和一个旱季)期间,对从国家海洋养殖发展中心(Balai Budidaya Laut)的浮动网箱和印度尼西亚南苏门答腊楠榜湾的野生渔获物中采集的35个样本进行了研究。鉴定出 25 种(养殖石斑鱼)和 30 种(野生石斑鱼)寄生虫物种/类群,群落范围从 1 到 9 种(养殖)和 3 到 14 种寄生虫物种(野生),表明即使在养殖鱼类中也存在物种丰富的寄生虫动物群。发现原生动物(1种)、小孢子动物(1种)、粘生动物(1种)、双殖动物(8种)、单殖动物(5种)、绦虫类(3种)、线虫类(8种)、棘头动物类(2种)和甲壳类动物(6种)。对于所有季节的养殖和野生石斑鱼来说,最丰富的寄生虫是单殖纲石斑鱼拟杆菌和大屿山拟杆菌。就养殖鱼类而言,单性体外寄生虫(例如石斑鱼、大屿山寄生虫、Capsalidae gen. et sp. indet.、石斑贝尼登虫)的流行率在大多数情况下高于异源体内寄生虫。这与野生石斑鱼形成鲜明对比,其中异源石斑鱼和石斑鱼等异源寄生虫。与相当丰富的假单胞菌属 (Pseudorhabdosynochusspp) 相比,发生率相似。养殖鱼和野生鱼均未观察到感染的季节性。全年潜在致病性单殖虫的高水平侵染可能会导致研究地点出现严重的寄生虫爆发。
A total of 210Epinephelus fuscoguttatus(brown‐marbled grouper) was examined for parasites. During three consecutive seasons (two rainy and one dry season from 2002 to 2004), 35 specimens each taken from floating net cages of the National Sea Farming Development Centre (Balai Budidaya Laut) and from wild catches in Lampung Bay, South Sumatra, Indonesia were studied. Twenty‐five (cultured grouper) and 30 (wild grouper) parasite species/taxa were identified, with an infracommunity ranging from one to nine (cultured) and three to 14 parasite species (wild), demonstrating a species‐rich parasite fauna even in the cultured fish. Protozoans (1 species), microsporeans (1), myxozoans (1), digeneans (8), monogeneans (5), cestodes (3), nematodes (8), acanthocephalans (2) and crustaceans (6) were found. The most abundant parasites were the monogeneansPseudorhabdosynochus epinepheliandPseudorhabdosynochus lantauensisfor both, cultured and wild grouper during all seasons. For the cultured fish, the prevalence of monoxenous ectoparasites (e.g.P. epinepheli, P. lantauensis, Capsalidae gen. et sp. indet.,Benedenia epinepheli) was in most cases higher than that of heteroxenous endoparasites. This contrasts the wild grouper, where heteroxenous parasites such asAllopodocotyle epinepheliandRaphidascarissp. occurred at a similar prevalence compared with the fairly abundantPseudorhabdosynochusspp. No seasonality of infestation was observed for both cultured and wild fish. The high levels of infestation of potentially pathogenic monogeneans throughout the year could result in significant parasite outbreaks at the locality studied.
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