RESPON RETINA MATA IKAN TERI (Stolephorus insularis) TERHADAP CAHAYA DALAM PROSES PENANGKAPAN PADA BAGAN RAMBO
| Main Author: | Sudirman, M.S.Baskoro, A.Purbayanto, D.R.Monintja, W.Rismawan dan T.Arimoto |
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| Format: | Article |
| Terbitan: |
Jurnal Torani Unhas
, 2012
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| Subjects: | |
| Online Access: |
http://repository.unhas.ac.id/handle/123456789/1189 |
Daftar Isi:
- Anchovy is one of the main catch of the bagan rambo (large typed lifnet with light attraction) Retinomotor responses of anchovy (S. insularis) by natural condition and different light illumination was examined in respects of the application of light fishing operation. The experiment were conducted in Makassar Strait used a bagan rambo (large typed liftnet with light attraction) with lighting power 16.4 kW. From the total 33 individuals anchovy (TL: 6.0 ??? 10.5 cm), their eye???s balls were sampled and prepared for the histological examination of the retina. Adaptation ratio was calculated from the cone and pigment movement in each experimental condition using Cone Index and Pigment Index. Concerning the light adaptation process, the movement patterns of the pigment and cone were different in natural condition and simulation, where in the natural condition the anchovy caught by the bagan rambo was fully light adapted at each hauling time. One the other hand, in the simulation condition anchovy was fully light adapted at 45 and 35 lux after 1 hour lighting. Anchovy is high light illumination preference, as shown by the slow of cone movement even the light illumination was low of 14 lux. In relation to the fishing operation of bagan rambo, if the anchovy as a target species, the hauling time, 4 to 5 times at the night time is optimum condition.