Oreochromis mossambicus (鱼类)

生态 分布 管理 影响 参考数据 联系

一般影响 吴郭鱼(Oreochromis mossambicu))被引入之后会由于食物以及筑巢空间的竞争，对本地原生物种造成威胁。记录显示吴郭鱼幼鱼会吃其它鱼。(de Moor et al. 1986) 如今吴郭鱼一般是被视为有害生物。在塔拉瓦（Tarawa）与诺鲁共和国（Nauru），扑灭行动被认为是较佳的政策。(Eldredge, 2000) 在夏威夷，此物种疑会对原生物种，如鲻（Mugil cephalus）造成威胁(Randall 1987; Devick 1991)。吴郭鱼也被视为是沙顿海（Salton Sea）区域中沙漠鱼（Cyprinodon macularius）数量下降的原因之一(Courtenay and Robins 1989; Swift et al. 1993) 。由于在佛罗里达的戴得县（Dade County）也发现其踪迹，Courtenay 在一九八九年指出吴郭鱼可能会进入大沼泽国家公园区。          地点特有的影响： Lake Cunningham (Bahamas)   竞争: Mozambique tilapia (Oreochromis mossambicus) compete with the threatened native Bahama pupfish (Cyprinodon laciniatus) resulting in declining abundance of these fish (Barton, 1999). Lake Killarney (Bahamas)   竞争: Mozambique tilapia (Oreochromis mossambicus) compete with the threatened native Bahama pupfish (Cyprinodon laciniatus) resulting in declining abundance of these fish (Barton, 1999). Bahamas   竞争: Mozambique tilapia (Oreochromis mossambicus) compete with the threatened native Bahama pupfish (Cyprinodon laciniatus) resulting in declining abundance of these fish (Barton, 1999). South India (India)   降低本地生物多样性: Mozambique tilapia (Oreochromis mossambicus) are thought to alter the assemblage of native fishes. Morelos (Mexico)   竞争: Stocking of Mozambique tilapia (Oreochromis mossambicus) in ponds has resulted in displacement of other fish species. 经济 /民生: Stocking of Mozambique tilapia (Oreochromis mossambicus) in ponds has resulted in a net decrease in fisheries production, due to competition with other fish species. Crater Lakes (Mexico)   威胁濒危物种: Mozambique tilapia (Oreochromis mossambicus) compete with the vulnerable silverside fish charal de la caldera (see Chirostoma bartoni in IUCN Red List of Threatened Species) that is endemic to La Alberca crater-lake. Laguna Chichancanab (Mexico)   竞争: Mozambique tilapia (Oreochromis mossambicus) compete with the native Cyprinodon species for habitat, resulting in declining abundance of these fish. Buada Lagoon (Nauru)   经济 /民生: Mozambique tilapia (Oreochromis mossambicus) have caused the collapse of milkfish aquaculture. New Caledonia (Nouvelle Calédonie)   威胁濒危物种: The introduction of two tilapia species (Oreochromis mossambicus and Sarotherodon occidentalis) in 1955, followed by that of the largemouth bass (Micropterus salmoides) in 1960, has led to a decrease in numbers of galaxias (Galaxias neocaledonicus). These introduced species preyed on the different stages of G. neocaledonicus (Keith 2002). Malakal Is. (Palau)   捕食: There is recent evidence that Mozambique tilapia (Oreochromis mossambicus), many of which feed on detritus or algae, will also eat small fishes (Courtenay, W., pers. comm., 2004). 竞争: Mozambique tilapia (Oreochromis mossambicus) can build large populations that often disrupt or eliminate populations of native species, usually due to their high numbers reached via reproduction (Courtenay, W., pers. comm., 2004). Western Cape (South Africa)   竞争: Mozambique tilapia (Oreochromis mossambicus) compete with native species of fish. Upper San Antonio River (United States (USA))   竞争: It is thought that competition by Mozambique tilapia (Oreochromis mossambicus) are affecting other species of fish.