【摘要】 1998~1999年和2002~2004年对宁夏沙坡头自然保护区的鱼类进行调查,经鉴定有鱼类18种,隶属3目5科17属,鲤形目占83.33%。其中人工养殖的有4种,鳙(Aristichthys nobilis)、鲢(Hypophtlmichthysmolitrix)、草鱼(Ctenopryngodon idellus)和团头鲂(Megalobrara amblycephola)。沙坡头地区的野生鱼类种类较少,但组成复杂,由江河平原、古代第三纪、北方平原、中亚山地和印度平原5个鱼类区系复合体组成,其中以江河平原复合体和古代第三纪复合体为主。沙坡头鱼类组成的复杂原因主要是:(1)养渔业的干扰;(2)保护区的地理位置;(3)历史因素。更多还原

【Abstract】 Shapotou Natural Reserve is situated on the southeastern edge of the Tengger Desert.Fish diversity in the Reserve was investigated in 1998-1999 and 2002～2004.A total of 18 fish species(4 artifitial propagated species and 14 wild species) were found,belonging to 17genera,5 families,and 3 orders among which Cypriniforms accounted for 83.33%.Although the wild fish species were a few,the fauna components were very complex.The 14 wild fish fauna may be divided into five faunal groups.The main factors that led to the high fish diversity in Shapotou Natural Reserve were:(1) fishery interference,(2) geographic position,(3) historic element.更多还原