KOMPOSISI IKAN HASIL TANGKAPAN JARING INSANG PADA BERBAGAI SHORTENING DI WADUK SERMO
Abstract: The aim of this
study was to determine fi sh capture and composition using gill nets in various
of shortening nets, as well as to obtained a suitable size of shortening nets
which better productive and sustainable. The study was conducted by fi shing
using gill nets 4 sheets, using gill net with mesh size of 2-inch eye openings
and various shortening nets, namely 40%, 50%, 60%, and 70%. The setting gill
nets were done in the afternoon and hauling the following morning day. Gill net
setting were done once a week in September-October 2013. All species of fi sh
gilled were collected, then measured the length and weight, as well as on the
abdomen was dissected to determine sex. Data on the number and weight of the
catch were analyzed descriptively, analyzed using a completely randomized
design were subjected to determine the best catches statistically. The results
showed that the number of individuals fi sh and the mean weight of fi sh captured
in shortening 40%, 50%, 60% and 70% were not signifi cantly different. The most
number of fi sh captured was in the nets with shortening of 60%, ie 392.69 (g/
trip), then on shortening of 40%, ie 333.3 g / trip, next on the shortening of
50% as much as 285.9 g/trip and the least in shortening 70% as much as 263.6 g
trip. Based on the fi sh species composition, the most dominant of fi sh captured
was red devil (52.5%), then tilapia mossambique (27.1%), black tilapia (17.5%),
managuin (1.3%), marbel gobby (0.8%), the remaining was consisted of snake head
and javain carp (0.8%). Based on sex proportion, the proportion of male fi sh in
tilapia mossambique was 63.8%, black tilapia was 53.7%, and red devil was
58.2%, while the remaining was balance between male and female.
Keywords: gill net,
shortening, Sermo reservoir
Penulis: Supardjo S. Djasmani,
Djumanto
Kode Jurnal: jpperikanandd140569
