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将经典动物区系与区系存在度分析方法相结合,探讨云南萨尔温江水系的南滚河、南汀河及勐波罗河3条一级支流的鱼类多样性相对于萨尔温江中游水系鱼类的代表性,比较其鱼类区系存在度差异,分析区系组成特征及科、属在区系建成中的重要性,旨在探讨区系存在度指标对鱼类保护区设置的指导作用。结果显示,萨尔温江中游水系(云南段)共记录土著鱼类74种,分隶于5目12科45属。3条支流共有土著鱼类53种,分隶于5目12科38属,其中南滚河鱼类有9科23属32种,南汀河有11科33属47种,勐波罗河有10科26属33种。按种类的绝对数排序,3条支流均是鲤科、鮡科和条鳅科排前3位。而按区系存在度结果排序,均是鳗鲡科、鳢科、刺鳅科、合鳃鱼科和鮡科等5个科位列前5位。两种方法排序结果显示,3条支流表现出完全的一致性。同一属级分类阶元的区系存在度在不同支流间变异较大,属级和种级分类阶元的地域性分布特点渐趋明显。这3条一级支流鱼类均是以老第三纪原始类群为主体,南方类群次之,还有少量青藏高原类群。结合鱼类区系存在度研究结果,在设置淡水鱼类保护区时,应考虑在大水系的上中下游分别选择1条或多条一级支流建立保护区;如果目、科级存在度高的阶元在鱼类保护区规划时涵盖得多,则保护了较多的高级阶元,但并非是必须考虑的阶元;而属级存在度值则是保护区规划时需要特别关注的事项。
The classical fauna and fauna abundance analysis method combined to explore the Southern Salween River in Yunnan Nangunhe, Nandinghe and Meng-Po Luo three tributaries of fish diversity relative to the Salween middle reaches The representativeness of aquatic fish, comparison of the differences in the existence of fish fauna, analysis of the floristic composition and characteristics of families, is the importance of the establishment of fauna in order to explore the existence of indicators of fauna of fish reserves set Guidance. The results showed that a total of 74 species of indigenous fish were recorded in the middle Salween River system (Yunnan section), belonging to 45 genera, 5 orders, 12 families. There are 53 species of indigenous fish in the three tributaries, belonging to 5 orders, 12 families and 38 genera, of which, there are 9 species of 23 genera and 32 species of south rolling river, 11 species of 33 genera and 47 species of Nanting River, 10 families, 26 genera and 33 species. Sort by absolute number of categories, 3 tributaries are Cyprinidae, Polygonaceae and the first three lobathe. According to the existence of degree of fauna, the rankings of the top 5 are among the 5 families of Eelidae, Trichosanthes, Lachidae, Coiliaceae and Trichinae. The results of the two methods showed that the three tributaries showed complete agreement. The existence of degrees of the same generic taxon differed greatly among the different tributaries, and the regional distribution characteristics of the gendered and taxonomic taxons gradually became obvious. The three primary tributary fish are based on the old Tertiary primitive group as the main body, followed by the southern group, as well as a small amount of Tibetan Plateau groups. Based on the study of the existence of fish fauna, one or more first-level tributaries should be considered in the upper and lower reaches of the major catchment to set up reserves when setting up freshwater fish reserves. Of the strata covered much more in the planning of a fish reserve, thus protecting more senior strata, but not necessarily the order of the rank; while the subordinate rank is a matter of special concern in reserve planning .