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首页> 外文期刊>Aquatic Invasions >Invasion frustration: can biotic resistance explain the small geographic range of non-native croaking gourami Trichopsis vittata (Cuvier, 1831) in Florida, USA?
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Invasion frustration: can biotic resistance explain the small geographic range of non-native croaking gourami Trichopsis vittata (Cuvier, 1831) in Florida, USA?

机译：入侵挫折：可以在美国佛罗里达州佛罗里达州的非本土烧结痛苦茯苓（Cuvier，1831）的非本土芦荟茯苓（Cuvier，1831）的小地理范围。

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Croaking gourami Trichopsis vittata is a non-native fish species that has maintained a reproducing population in Florida, USA, since at least the 1970s. However, unlike most other non-native fishes in Florida, T. vittata has not spread beyond its very small (ca. 5 km2) range. We suspected the inability of T. vittata to colonize new habitats may be due to biotic resistance by the native eastern mosquitofish Gambusia holbrooki. In laboratory experiments, we show that G. holbrooki causes physical damage to T. vittata and that T. vittata’s growth is reduced in the presence of G. holbrooki. While the effects of G. holbrooki on T. vittata were sub-lethal, they were severe enough to hamper its growth and could affect recruitment in the wild. These results support the hypothesis that small non-native fishes may be excluded from establishment or may only establish small ranges due to pressure from G. holbrooki. Biotic resistance may reduce invasion success and thus consideration of species interactions is useful for natural resource managers trying to evaluate the potential risk of new invaders.
机译：乳酸痛苦Trichopsis Vittata是一种非本土鱼类，其在美国佛罗里达州佛罗里达州的繁殖人口，因为至少20世纪70年代。然而，与佛罗里达州的大多数其他非本地鱼不同，Vittata没有超越其非常小（约5km2）范围。我们怀疑T.Vittata无法殖民，新栖息地可能是由于原住民东部蚊虫甘布鲁克的生物抵抗。在实验室实验中，我们表明G. Holbrooki对T.Vittata的身体损伤，并且在G. Holbrooki的存在下降低了T.Vittata的增长。虽然G. Holbrooki对Vittata的影响是亚致死的，但它们足以妨碍其增长，并且可能影响野外的招聘。这些结果支持小型非本地鱼类可能被排除在建立之外，或者可能只建立由于G. Holbrooki的压力而建立小范围。生物抗性可能会降低入侵成功，因此考虑物种相互作用对于试图评估新入侵者的潜在风险的自然资源管理人员有用。

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