Effect of 17α-Methyltestosterone Hormone Manipulation in Various Water Temperatures on Sex Ratio of Guppy (Poecilia reticulata Peters)
| Main Authors: | Arfah, H.; Bogor Agricultural University, Department of Aquaculture, Kadriah, A.K.; Bogor Agricultural University, Department of Aquaculture, Carman, O.; Bogor Agricultural University, Department of Aquaculture |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
ISSA
, 2012
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| Online Access: |
http://journal.ipb.ac.id/index.php/jai/article/view/3902 http://journal.ipb.ac.id/index.php/jai/article/view/3902/2660 |
Daftar Isi:
- This study was conducted to determine percentage of male progeny of guppy (Poecila reticulata Peters) broodstock immersed in water containing various dose of 17α-Methyltestosterone (MT) and different temperature. Immersion of broodstock was carried out at 10th day after spawning. Dosage of MT used was 0, 0.5 and 1 mg per liter of water, while the water temperature was 27, 30 and 33oC, for 24 hours immersion. The result of study showed that the combination of hormone treatment 1mg/L and temperature 27oC produced higher percentage of male progeny (92.7%). Increasing water temperature in combination with dose of hormone treatment can reduce percentage of male progeny. Keywords: guppy, Poecilia reticulata, 17α-Methyltestosterone, temperature, sex reversal, monosex ABSTRAK Penelitian ini dilakukan untuk mengetahui nisbah kelamin jantan keturunan induk ikan gapi (Poecila reticulata Peters) yang telah direndam hormon 17α-Metiltestosteron (MT) dengan berbagai tingkatan dosis yang dikombinasikan dengan temperatur air yang berbeda-beda. Perendaman induk dilakukan pada hari kesepuluh setelah pemijahan. Dosis hormon yang digunakan adalah 0, 0,5 dan 1 mg/L air, sementara suhu air perendaman adalah 27oC, 30oC dan 33oC, dengan lama perendaman 24 jam. Hasil penelitian menunjukkan bahwa kombinasi perlakuan hormon 1 mg/L dengan temperatur 27oC menghasilkan rataan persentase ikan gapi kelamin jantan tertinggi yaitu 92,7%. Peningkatan temperatur yang dikombinasikan dengan dosis hormon ternyata mengakibatkan penurunan persentase anak berkelamin jantan. Kata kunci: ikan gapi, Poecilia retiulata, 17α-Metiltestosteron, temperatur, seks reversal, monoseks