On the Biology of the One-Stripe Spiny Eel, Macrognathus aral (Bloch and Schneider) from the Ponds in lower Krishna Irrigation System

Sharma, S V and Lavanya, A (2002) On the Biology of the One-Stripe Spiny Eel, Macrognathus aral (Bloch and Schneider) from the Ponds in lower Krishna Irrigation System. In: Fifth Indian Fisheries Forum, 17-20 January 2000, Bhubaneswar, Orissa.

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Abstract

Spiny eels (Mastacembelidae) forin an important component of the Inland fishery in the lower Krishna imgation system and also command good price. Macrognarl~rcsa ral spawns during August-September months coinciding with the southwest monsoon in this region. Studies on the ova diameters of the intraovarian ova show that the individuals release all the ova in a single spawning act. 50% of the males attained maturity at total length of 16 cm, while 50% of the females attaining maturity at 17.5 cm TL Fecundity ranged between 1065 and 4961. Relationship between length and weight can be expressed by the formula Log W= -3.91+2.39 Log L for juveniles, and Log W= -6.31+ 3.2 Log L and Log W= -7.53 + 3.67 Log L for adult males and females, respectively. The fish primarily feeds on detritus of animal origin.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:One-Stripe Spiny Eel; Macrognathus aral; lower Krishna Irrigation System
Subjects:Demersal Fishes > Eels
Divisions:CMFRI-Cochin > Marine Capture > Demersal Fisheries
ID Code:4462
Deposited By:Arun Surendran
Deposited On:27 Sep 2010 13:07
Last Modified:27 Sep 2010 13:07

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