کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11031945 | 1645731 | 2019 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gender identification in farmed giant gourami (Osphronemus goramy): A methodology for better broodstock management
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
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چکیده انگلیسی
The giant gourami Osphronemus goramy Lacepède (1801) is one of the main freshwater commodities of economic importance in Indonesia. This species has been produced in small-scale farms for decades. Although giant gourami aquaculture has grown exponentially during the last 15â¯years, there are still limitations in the availability of fry, in part due to difficulties in sexing broodfish, which leads to non-optimal sex-ratios for breeding. In this study, morphological and behavioral criteria for sex identification based on the Indonesian National Standard and a field survey were assessed on >400 giant gourami broodfish using a random forest algorithm. The actual sex of the fish was confirmed using a urogenital cannulation technique. This analysis demonstrated that, for the so-called “black” phenotype fish, observations of the hump on the forehead, thickening of the lower jaw, and the pigmentation on the pectoral fin are highly reliable for sexing (about 95% success). However, pectoral fin pigmentation was not useful for sexing the so-called “white” phenotype fish. This study also revealed that the criteria often used by fish farmers do not improve sexing success. Based on these findings, recommendations are made for optimizing the sexing of mature giant gourami fish and for selecting preadults as future broodfish.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquaculture - Volume 498, 1 January 2019, Pages 388-395
Journal: Aquaculture - Volume 498, 1 January 2019, Pages 388-395
نویسندگان
Jacques Slembrouck, Otong Z. Arifin, Simon Pouil, Jojo Subagja, Akhmad Yani, Anang H. Kristanto, Marc Legendre,