National Aquatic Resources Research & Development Agency (NARA)

Fishery and Length Based Poulation Studies of Amblygaster Sirm (Walbaum) from the Southern Coastal Waters of Sri Lanka

By: Series: Journal of NARA. ; Vol.33 Publication details: NARA,Description: 15p
Contents:
The fishery for Amblveas ter alxm in the south coast of Sri Lanka is carried out by small meshed gill nets with mesh sizes ranging from 28 to 38 tnm. These nets are operated by non mechanised as well as mechanised crafts ' 1 in depths ranging from 20 to 70 m. The catch per unit i ■ i >*' effort of mechanised crafts are higher than that of non T <• . j. ; • mechanised crafts. The best fishing season was obse.rved .to be between November and January. The length frequency data of A.sirni collected during September 1983 to August 1984 was analysed using ELEFAH computer programmes. This has shownjan asymptotic length (Lm ) of 23.0 cm and a growth constant .(k) of 0.93. The exploitation, rate was fonnd to be 0.31. A recruitment i pattern with two pulses separated by five to six months was also observed for this fish stock.
Tags from this library: No tags from this library for this title. Log in to add tags.
Star ratings
    Average rating: 0.0 (0 votes)
Holdings
Item type Current library Copy number Status Barcode
Research Papers Research Papers NARA Main Library Ready Reference RP0166 Available RP0166

The fishery for Amblveas ter alxm in the south coast of
Sri Lanka is carried out by small meshed gill nets with
mesh sizes ranging from 28 to 38 tnm. These nets are
operated by non mechanised as well as mechanised crafts ' 1 in depths ranging from 20 to 70 m. The catch per unit i ■ i >*' effort of mechanised crafts are higher than that of non T <• . j. ; • mechanised crafts. The best fishing season was obse.rved
.to be between November and January.
The length frequency data of A.sirni collected during
September 1983 to August 1984 was analysed using ELEFAH
computer programmes. This has shownjan asymptotic length
(Lm ) of 23.0 cm and a growth constant .(k) of 0.93. The
exploitation, rate was fonnd to be 0.31. A recruitment i
pattern with two pulses separated by five to six months
was also observed for this fish stock.

There are no comments on this title.

to post a comment.
NARA Library Management System Maintaining by Ceymarc Technologies