Abstract
Poropuntius tawarensis is an endemic fish belonging to the Cyprinidae family found in Laut Tawar Lake, Central Aceh, Indonesia. P. tawarensis has a limited distribution and the fertilization only occurs in the rainy season. The purpose of this research was to observe the effect of Oodev hormone with different doses on the maturity of P. tawarensis. This study was used completely randomized design (CRD) consisting of 3 treatments and 3 replicates. Treatments used were the hormone doses of 0.25 mL/kg, 0.50 mL/kg and treatment without hormone (control). The parameters used in this study were gonadosomatic index (GSI), egg diameter, coefficients of variation (CV) of egg diameter, fecundity, and hepatosomatic index. The study revealed the highest value found in a dose of 0.50 mL/kg which the value of egg diameter was 0.8791±0.02 mm, coefficients of variation of egg was 6.46±0.49% and fecundity was 869±33.99 egg/kg. While the highest gonadosomatic index was found in a dose of 0.25 ml/kg (10.41±2.03%). Moreover, the induction of Oocyte developer (Oodev) hormone on the maturity of P. tawarensis did not significantly affect the hepatosomatic index (HSI), but Oodev hormone was efficient to accelerate the gonad maturity of fish.
Highlights
Poropuntius tawarensis is an endemic fish belonging to the Cyprinidae family found in Laut Tawar lake, Central Aceh, Indonesia
The Government of Central Aceh Regency has tried to domesticate and spawn P. tawarensis, but they are still constrained by the process of gonad maturation of fish which only occured during the rainy season, P. tawarensis fish was unable to spawn throughout the year [1]
ANOVA showed that induction of oocyte developer on P. tawarensis had a significant effect on gonadosomatic index, eggs diameter, coefficients of variation of egg and fecundity
Summary
Poropuntius tawarensis is an endemic fish belonging to the Cyprinidae family found in Laut Tawar lake, Central Aceh, Indonesia. The use of Oodev hormone is known to accelerate the maturation of various types of fish. According to Farastuti et al [6], Oodev hormone is a combination of pregnant mare's serum gonadotropin (PMSG) and antidopamine (AD). PMSG hormone contains more Follicle Stimulating Hormone (FSH) than Luteinizing Hormone (LH) which is good for gonad maturation of fish. Inhibited dopamine activity stimulates the synthesis and release of the hormone lutein, which is initiated by gonadotropin releasing hormone (GnRH) in the pituitary gland [7, 8]. The objective of this study was to observe the effect of Oodev hormone with different doses on the maturity of P. tawarensis
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