淡水渔业
淡水漁業
담수어업
FRESHWATER FISHERIES
2015年
1期
42-45
,共4页
鱼类区系%鱼类资源%唐家河自然保护区
魚類區繫%魚類資源%唐傢河自然保護區
어류구계%어류자원%당가하자연보호구
fish fauna%resource status%Tangjiahe Nature Reserve
于2013年8月和12月分别对四川省唐家河自然保护区的鱼类资源现状进行了调查，共采集鱼类标本622尾，隶属2目3科9种。渔获物分析表明：该保护区鱼类以鲤形目鲤科鱼类为主（占鱼类种数55．56％），主要由老第三纪原始类群和青藏高原类群两个区系组成，兼有少数东亚类群及北方冷水性鱼类分布；同历史文献资料相比，鱼类区系无明显变化；洛氏（Phoxinus lagowskii）和齐口裂腹鱼（Schizothorax prenanti）为优势种群，分别占渔获物总数的60．13％、36．50％；鱼类小型化现象严重，部分种群数量急剧下降甚至处于濒危状况；从适温性、栖息水层、食性等角度可将该保护区的鱼类划分为不同的生态类型。综合分析认为：保护措施不完善、小水电站的无序开发和鱼类资源的过度利用是该保护区鱼类资源量下降的主要原因。
于2013年8月和12月分彆對四川省唐傢河自然保護區的魚類資源現狀進行瞭調查，共採集魚類標本622尾，隸屬2目3科9種。漁穫物分析錶明：該保護區魚類以鯉形目鯉科魚類為主（佔魚類種數55．56％），主要由老第三紀原始類群和青藏高原類群兩箇區繫組成，兼有少數東亞類群及北方冷水性魚類分佈；同歷史文獻資料相比，魚類區繫無明顯變化；洛氏（Phoxinus lagowskii）和齊口裂腹魚（Schizothorax prenanti）為優勢種群，分彆佔漁穫物總數的60．13％、36．50％；魚類小型化現象嚴重，部分種群數量急劇下降甚至處于瀕危狀況；從適溫性、棲息水層、食性等角度可將該保護區的魚類劃分為不同的生態類型。綜閤分析認為：保護措施不完善、小水電站的無序開髮和魚類資源的過度利用是該保護區魚類資源量下降的主要原因。
우2013년8월화12월분별대사천성당가하자연보호구적어류자원현상진행료조사，공채집어류표본622미，대속2목3과9충。어획물분석표명：해보호구어류이리형목리과어류위주（점어류충수55．56％），주요유로제삼기원시류군화청장고원류군량개구계조성，겸유소수동아류군급북방랭수성어류분포；동역사문헌자료상비，어류구계무명현변화；락씨（Phoxinus lagowskii）화제구렬복어（Schizothorax prenanti）위우세충군，분별점어획물총수적60．13％、36．50％；어류소형화현상엄중，부분충군수량급극하강심지처우빈위상황；종괄온성、서식수층、식성등각도가장해보호구적어류화분위불동적생태류형。종합분석인위：보호조시불완선、소수전참적무서개발화어류자원적과도이용시해보호구어류자원량하강적주요원인。
To study the variation of fish fauna and status of fish resources in Tangjiahe Nature Reserve in Sichuan prov -ince, the field survey was conducted in August and December , 2013.During the investigation, a total of 622 specimens belonging to 9 species 3 families and 2 orders were obtained.Analysis showed that the Cyprinid fishes were the dominant species, accounting for 55.56%.The main species of the fauna were the Later Tertiary Period Primitive Group and Tibetan Plateau Group, with a small number of individuals of North Cold Water Group and East Asian Group .Compared to histori-cal data, no significant variation in fish fauna can be observed .Among the obtained fish species, Phoxinus lagowskii and Schizothorax Prenanti were the dominant species, accounting for 60.13%, 36.50%, respectively.However, the fish miniaturization was obvious , some species exhibited a dramatic decline in population quantity , and some fishes were even endangered.The obtained fishes could be divided into different ecological types according to the thermophily , distribution of the water layer feeding and diet.Comprehensive analysis indicated that the imperfect protective measures , the disorder de-velopment of small hydropower , and the excessively use of fish resources in Tangjiahe Nature Reserve were responsible for the present status.
