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首页> 外文期刊>Polar biology >A comparative study of diet in three sympatric populations of Patagonotothen species (Pisces : Nototheniidae)
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A comparative study of diet in three sympatric populations of Patagonotothen species (Pisces : Nototheniidae)

机译：三种巴塔哥尼亚语同养种群饮食的比较研究（双鱼：Nototheniidae）

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The diet of three Patagonotothen species was investigated from the bycatch of near-bottom trawls for squid on the southern Falkland Island shelf. Patagonotothen ramsayi had a moderately diverse diet that was mostly zooplankton, especially amphipods, but included benthos and discards from the fishery, especially squid. P. guntheri also had a moderately diverse zooplankton diet, especially copepods, and benthos and squid damaged by the fishery. The diet of P. tessellata was the most diverse and was mainly benthos, including damaged scallops, with some euphausiids and amphipods. Feeding niche overlap of fish between 10 and 20 cm TL for the three species was between 5.8 and 9.2% for each pair of species, indicating relatively little overlap even though all species scavenged on organisms made available by the fishery. Thus the diet of these three Patagonotothen species indicates substantial feeding niche separation, and that the three species are moderately specialised feeders. [References: 11]
机译：从福克兰岛南部陆架近端拖网鱿鱼的副渔获物中调查了三种Patagonotothen种类的饮食。 Patagonotothen ramsayi饮食适度多样，主要是浮游动物，尤其是两栖类，但包括便当和渔业废弃物，特别是鱿鱼。 P. guntheri还具有适度多样化的浮游动物饮食，尤其是co足类以及受渔业破坏的便当和鱿鱼。斑节对虾的饮食种类最全，主要是底栖动物，包括受损的扇贝，还有一些虾类和两栖类动物。三种鱼类在10到20厘米TL之间的觅食生态位重叠对于每对物种来说介于5.8％和9.2％之间，这表明即使所有物种都利用渔业提供的生物进行清除，重叠的情况也相对较少。因此，这三种巴塔哥乙素的饮食表明它们的饲料生态位基本分离，并且这三种是适度专业化的饲养者。 [参考：11]

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