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首页> 外文期刊>Journal of Fish Biology >Biogeographic patterns in the Australian chondrichthyan fauna.
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Biogeographic patterns in the Australian chondrichthyan fauna.

机译：澳大利亚软骨动物区系中的生物地理格局。

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摘要

The major biogeographic structure and affinities of the Australian chondrichthyan fauna were investigated at both interregional and intraregional scales and comparisons made with adjacent bioregions. Faunal lists were compiled from six geographical regions with species from these regions assigned to distributional classes and broad habitat categories. Australian species were further classified on provincial and bathomic structure following bioregionalization outputs from regional marine planning. About 40% of the world's chondrichthyan fauna occurs in Indo-Australasia (482 species) of which 323 species are found in Australian seas. The tropical Australian component, of which c. 46% of taxa are regional endemics, is most similar to faunas of Indonesia, New Guinea and New Caledonia. The temperate Australian component is most similar to New Zealand and Antarctica with about half of its species endemic. Highest levels of Australian endemism exist in bathomes of the outer continental shelf and upper slope. A relatively high proportion of regional endemism (57% of species) on the slope in the poorly surveyed but species-rich Solanderian unit is probably due to high levels of large-scale habitat complexity in the Coral Sea. The richness of demersal assemblages on the continental shelf and slope appears to be largely related to the spatial complexity of the region and the level of exploration. Much lower diversity off Antarctica is consistent with the pattern in teleosts. The complex chondrichthyan fauna of Australia is confirmed as being amongst the richest of the mega-diverse Indo-West Pacific Ocean. Species-level compositions of regional faunas across Indo-Australasia differ markedly because of moderate to high levels of intraregional speciation. Faunal assemblages in Australian marine provinces and bathomes differ from each other, supporting a broader pattern for fishes that underpins a marine planning framework for the region. Copyright 2011 CSIRO. Journal of Fish Biology Copyright 2011 The Fisheries Society of the British Isles.
机译：在区域间和区域内范围内调查了澳大利亚软骨动物区系的主要生物地理结构和亲和力，并与邻近的生物区进行了比较。从六个地理区域编制了动物群落清单，并将这些区域的物种划分为分布类别和广泛的栖息地类别。根据区域海洋规划的生物区域化结果，将澳大利亚物种进一步划分为省级和基础级结构。世界约有40％的软骨动物区系在印度洋-澳大利亚（482种）中，其中323种在澳大利亚海域发现。澳大利亚的热带成分，其中c。 46％的分类单元是区域特有的，与印度尼西亚，新几内亚和新喀里多尼亚的动物群最为相似。澳大利亚的温带成分与新西兰和南极洲最相似，约一半的物种是地方性的。澳大利亚大陆特有种的最高水平存在于外大陆架和上坡的浴盆中。在调查较少但物种丰富的Solanderian单元的斜坡上，区域特有物种的比例较高（占物种的57％），可能是由于珊瑚海中大规模栖息地的复杂性很高。大陆架和斜坡上的海底组合物的丰富程度似乎与该地区的空间复杂性和勘探水平有很大关系。南极洲的低得多的多样性与硬骨鱼的模式一致。澳大利亚的复杂的软骨鱼类动物区系被确认为巨型多样的印度西太平洋最丰富的动物之一。由于中到高水平的区域内物种形成，整个印度洋-大洋洲的区域动物群的物种水平组成明显不同。澳大利亚海洋省份和浮游动物的动物群彼此不同，支持了广泛的鱼类模式，为该区域的海洋规划框架奠定了基础。版权所有CSIRO 2011。鱼生物学杂志版权所有2011，不列颠群岛渔业协会。

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