作者
Abdul-Razak M Mohamed, SM Ahmed, MT Al-Okailee
发表日期
2012
期刊
Basrah Journal of Agriculture Science
卷号
25
页码范围
40-52
简介
The larvae of hilsa, Tenualosa ilisha were surveyed from the northern part of Shatt Al-Arab River during January 2008 to June 2009. A total of 631 hilsa larvae (5.0-18.0 mm) were collected comprising 6. 75% of the total fishes larvae collected. All hilsa larvae were collected during March-September with peak of abundant was in August. The lowest abundance of hilsa larvae was 80 larvae/10m² in March 2008 and the highest abundance was 2215 larvae/10m² in August. Water temperature ranged from 11.6 to 31.4 oC, salinity varied from 1.9‰ to 3.1‰ and water transparency ranged from 33 cm to 104 cm. The overall diet of hilsa larvae consisted mainly of adult and larvae copepod (55.7%), cladocera (27.3%) and organic detritus (17.0%). According to Castello plot, the larvae of T. ilisha were a generalist feeder. The results indicated that the northern part of the Shatt Al-Arab River is a spawning and nursery ground for larvae of this species.
引用总数
2014201520162017201820192020202111126