本文選題：三峽庫區(qū) + 魚類早期資源�。� 參考：《水生生物學(xué)報》2015年05期

【摘要】：2014年4—7月魚類主要繁殖季節(jié)于三峽庫區(qū)(重慶豐都縣)進行魚類早期資源調(diào)查,以了解三峽庫區(qū)魚類早期資源現(xiàn)狀,四大家魚在庫區(qū)是否仍有產(chǎn)卵場等問題。調(diào)查共采集到魚類50種,分屬5目9科。采集時,卵汛出現(xiàn)在6月后流速較高的時段,其中貝氏的數(shù)量最多,占86.24%。仔魚出現(xiàn)的高峰期為6月上旬至7月中旬,太湖新銀魚的數(shù)量最多,占58.36%,其次為子陵吻虎魚,占27.04%。在仔魚中,種類組成呈明顯的月份差異,4月鯉、鯽占數(shù)量優(yōu)勢;5月太湖新銀魚、子陵吻虎魚占數(shù)量優(yōu)勢;6月后湆亞科、鰍科、鱖等種類開始出現(xiàn),種類明顯增多。通過估算,調(diào)查期間流經(jīng)豐都斷面的魚卵總量為4.37×108粒,四大家魚魚卵為0.21×107粒;仔魚總量為111.98×108尾,四大家魚仔魚為0.21×108尾。通過產(chǎn)卵場的推算,豐都斷面采集的四大家魚來自涪陵城區(qū)江段和三峽庫區(qū)上游的重慶巴南區(qū)至朱沱鎮(zhèn)江段的產(chǎn)卵場。通過對卵苗漂流密度的晝夜規(guī)律分析,6月之前夜間仔魚密度顯著高于白天,而6月后仔魚晝夜漂流密度無顯著差異。本研究表明,從三峽庫尾進入三峽水庫的魚類早期資源豐富,大部分魚類繁殖發(fā)生在6月以后水溫較高、入庫流量大、庫區(qū)流速較高的時段,庫尾部分江段在流速較高時期,仍存在四大家魚的產(chǎn)卵場。
[Abstract]:In order to find out the present situation of fish resources in the three Gorges Reservoir area (Fengdu County, Chongqing) and whether there are still spawning grounds in the three Gorges Reservoir area, the main breeding season of fish in April-July 2014 is investigated in order to find out the present situation of fish resources in the three Gorges Reservoir area. A total of 50 species of fish, belonging to 5 orders and 9 families, were collected. The egg flood occurred in the period of high velocity after June, in which the number of Bayesian was the most, accounting for 86.24. The peak period of larvae was from early June to mid-July. The number of new silkfish in Taihu Lake was the most, accounting for 58.36, followed by Ziling Tigers, accounting for 27.04. In the larval fish, the species composition showed a significant monthly difference, April carp and crucian carp accounted for the dominant number; in May, the Taihu New Silverfish, Ziling Tigers were dominant; after June, the subfamily, Loach, Siniperca fish and other species began to appear, and the species increased obviously. It was estimated that the total number of eggs flowing through Fengdu section during the investigation period was 4.37 脳 10 ~ 8, 0.21 脳 10 ~ 7 for four domestic fishes, 111.98 脳 10 ~ 8 for larvae and 0.21 脳 10 ~ 8 for four domestic fishes. According to the calculation of spawning yard, the four domestic fish collected from Fengdu section come from the spawning yard in Fuling City and the upstream of the three Gorges Reservoir area, from Bannan of Chongqing to Zhutuo Town. Through the diurnal analysis of the drift density of egg seedlings, it was found that the density of larval larvae was significantly higher than that of daytime before June, but there was no significant difference in diurnal drift densities of larvae after six months. The results show that the early fish resources entering the three Gorges reservoir from the tail of the three Gorges reservoir are abundant, and most of the fish reproduction occurs in the period after June when the water temperature is higher, the inflow of the reservoir is large, the velocity of the reservoir is high, and the section of the river in the end of the reservoir is in the period of higher velocity. There are still four big fish spawning grounds.
【作者單位】： 中國科學(xué)院水生生物研究所;中國科學(xué)院水生生物多樣性與保護重點實驗室;中國科學(xué)院大學(xué);
【基金】：長江三峽生態(tài)與環(huán)境監(jiān)測系統(tǒng)(JJ[2013]-10) 中國長江三峽集團公司科研項目(CT-12-08-01);中國長江三峽集團公司科研項目(0799522)資助
【分類號】：S932.4

【參考文獻】

相關(guān)期刊論文 前1條

1 黎明政;段中華;姜偉;劉煥章;;長江干流不同江段魚卵及仔魚漂流特征晝夜變化的初步分析[J];長江流域資源與環(huán)境;2011年08期

相關(guān)碩士學(xué)位論文 前1條

1 唐錫良;長江上游江津江段魚類早期資源研究[D];西南大學(xué);2010年

【共引文獻】

相關(guān)期刊論文 前5條

1 劉飛;黎良;劉煥章;王劍偉;;赤水河赤水市江段魚卵漂流密度的晝夜變化特征[J];淡水漁業(yè);2014年06期

2 李躍飛;李新輝;楊計平;李捷;帥方敏;;珠江干流長洲水利樞紐蓄水后珠江溼魚(Elopichthys bambusa)早期資源現(xiàn)狀[J];湖泊科學(xué);2015年05期

3 汪珂;劉凱;徐東坡;段金榮;張敏瑩;陳永進;施煒綱;;魚類早期資源研究進展[J];江西農(nóng)業(yè)大學(xué)學(xué)報;2013年05期

4 李躍飛;李新輝;楊計平;SOVAN Lek;帥方敏;李捷;;珠江禁漁對廣東魴資源補充群體的影響分析[J];水產(chǎn)學(xué)報;2014年04期

5 李躍飛;李新輝;譚細暢;楊計平;帥方敏;李捷;;珠江中下游鲴亞科魚苗發(fā)生規(guī)律與年際變化[J];中國水產(chǎn)科學(xué);2013年04期

相關(guān)碩士學(xué)位論文 前1條

1 賈礫;長江宜賓段中華金沙鰍食性與生長研究[D];西南大學(xué);2013年

【二級參考文獻】

相關(guān)期刊論文 前10條

1 陳[咨，

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