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All Journal Zuriat BERITA BIOLOGI Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Indonesian Aquaculture Journal
Rudhy Gustiano
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science

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GROWTH RATE COMPARISONS OF THREE COLOR MORPHS OF COMMON CARP (Cyprinus carpio L.) CULTURED IN COMMERCIAL FLOATING NET CAGES Rudhy Gustiano
Zuriat Vol 15, No 2 (2004)
Publisher : Breeding Science Society of Indonesia (BSSI) / PERIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/zuriat.v15i2.6817

Abstract

The study aims at establishing possible relationships between growth of weight and color morphs difference of the common carp cultured in floating netcages. Ten floating net-cage (7 m × 7 m × 2 m) were selected from three farms in Cirata Reservoir for studying growth performance. Each cage-net was stocked with 300 kg of 12 cm–16 cm common carp juvenile. The fish was weighed every other week, i.e., at week 0, 2, 4, 6, and 8. The fish in each cage were gathered to one side of the cage with bamboo sheets. Thirty fish for each of three colors (blue, green, and red) were randomly sampled from each cage using a scoop net. The result showed that the green fish was the fastest growing in 2 of the 3 significant cases and blue for 1 case. In most cases color morphs also did not show any differences in the weight regression coefficients. However, there were 5 significant cases where green was always the best followed by the blue one. Thus, there was evidence that the dark color (green and blue) gained weight faster than light one (red). Green and blue colored showed similarity in growth performance based on weight regression coefficient.
COLOR POLYMORPHISMS ON COMMON CARP CULTURED IN INDONESIA Rudhy Gustiano
Zuriat Vol 16, No 2 (2005)
Publisher : Breeding Science Society of Indonesia (BSSI) / PERIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/zuriat.v16i2.6759

Abstract

In most cases, phenotypic variation is partly a result of genetic differences and partly environmental in origin. It appears that polymorphism is caused by some gene frequency changes which are due to natural selection. Morphological markers (body color and scale pattern) are the easiest indicators to identify and important when large sample are involved. In addition, the coloration in food fishes is often important in determining market price. Moreover, the production of fish depends not only on their genes and environment but also on the interaction of these two factors. Several investigations reported that some color genes have pleiotropic effect on growth rate and viability of fish. Hence, it is important to understand the basis of color polymorphisms in order toenhance genetic improvement and brood stock management plans for common carp in Indonesia. The occurrence color polymorphism showed that the proportion (%) of  each color morphs in each farm showed a high proportion of green color morph in common carp stocks. Dark colored carps are preferred over brightly pigmented ones. Bright colored morphs are preferred to the colorless (white). Comparison among the red, yellow, white, green and blue color morphs of common carp showed that each morph has its own specific chromatophore type densities, pigment distribution pattern. The study also showed that color variation is governed by the types of pigment cells present. The genetic color polymorphisms study showed that various color phenotypes were mainly controlled by simple Mendelian inheritance. Symbols for gene loci proposed as follow: B1 and B2 for common green body background (wild type allele), R1 and R2 for red and yellow. T is for wild nontransparent scale type and P for uniform body color background. B1 and B2 are epistatic to R1 and R2 genes. On the basis of the growth rate comparison results obtained on common carp in Indonesia, there was evidence that dark color (green and blue) common carp gained weight faster than the light color one (red). Green and blue colored showed similarity in growth performance.
PHENETIC ANALYSIS OF 28 SPECIES PANGASIID CATFISHES FROM ASIA Rudhy Gustiano; Laurent Pouyaud
Zuriat Vol 16, No 1 (2005)
Publisher : Breeding Science Society of Indonesia (BSSI) / PERIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/zuriat.v16i1.6787

Abstract

A great variation in the external morphology of pangasiid catfishes and it is difficult to give a standard definition of their external appearance. The degree of similarity, known as phenetic analysis, is generally one of the criteria on which the recognition of taxa has been based. The objective of this phenetic analysis was to determine the degree of similarity. A measure of dissimilarity was computed from the coordinates of the first two axes of the Correspondence Analysis, using Euclidean distance. The distances were used to produce coefficients of similarity between each species pair. Distances are  non-negative and low values indicate similarity. Distance values for the matrix were then clustered with the unweighted pair-group method using the arithmetic average and summarized in a phenogram. The results showed that all species analysed for proposed genera aggregated. Analysis on 28 species supports that they should belong to four genera.
Co-Authors Byung Hwa Min Byung Hwa Min Fera Permata Putri Irin Iriana Kusmini Jojo Subagja Ki Tae Kim Ki Tae Kim Laurent Pouyaud MH. Fariduddin Ath-thar Otong Zenal Arifin Titin Kurniasih Vitas Atmadi Prakoso Vitas Atmadi Prakoso Vitas Atmadi Prakoso Young Jin Chang Young Jin Chang