Effects of exogenous hormones and broodstock age on the spawning response of captive silver therapon Leiopotherapon plumbeus
View/ Open
Request this document
Date
2022Page views
180Metadata
Perlihat publikasi penuhCited times in Scopus
Share
Abstract
Evaluation of appropriate hormone and ideal broodstock age for optimal breeding efficiency may ensure the production of good quality eggs and larvae in the hatchery. In this study, the spawning response of captive silver therapon Leiopotherapon plumbeus to various hormonal treatments and broodstock age was examined. In Experiment 1, spawning success, latency period, absolute and relative fecundity, fertilization and hatching rates, and larval production of female silver therapon broodstock were determined after ovulation and spawning in response to human chorionic gonadotropin (hCG; 5000 and 10,000 IU/kg), Ovaprim (0.5 ml/kg), hCG + Ovaprim (5000 IU + 0.5 ml/kg; 10,000 IU + 0.5 ml/kg) or hCG + domperidone (5000 IU + 0.5 ml/kg; 10,000 IU + 0.5 ml/kg). In Experiment 2, reproductive performance of four domesticated broodstock age groups (1+, 2+, 3+ and 4+-year old) was examined for five consecutive months, coinciding with the spawning season. Higher dose of hCG + Ovaprim resulted in higher spawning (100%), fertilization (99.7 ± 0.1%), and hatching (85.8 ± 5.5%) rates than the other treatments. The effect of age on reproductive indices was not significant. However, better spawning performance was observed in 1+ to 3+-year old broodstock, with higher fertilization (96.8–98.5%) and hatching (63.7%–77.2%) rates than among the oldest age group (82.9% and 57.2%). Together, results suggest that the combination of hCG + Ovaprim is highly effective in inducing ovulation and spawning in silver therapon, and that domesticated broodstock up to 4+ years of age could still be used for breeding activities and seed production.
Suggested Citation
Aya, F., Sayco, M. J. P., & Garcia, L. M. (2022). Effects of exogenous hormones and broodstock age on the spawning response of captive silver therapon Leiopotherapon plumbeus. Journal of Applied Ichthyology , 38(2), 232-240. https://doi.org/10.1111/jai.14297
Subject
Taxonomic term
Koleksi
- AQD Journal Articles [1229]
Related items
Showing items related by title, author, creator and subject.
-
Effects of human chorionic gonadotropin (hCG) and handling stress on spermiation of silver perch Leiopotherapon plumbeus (Kner, 1864)
Denusta, Pastor Jones; de Jesus-Ayson, Evelyn Grace T.; Laron, Manuel A.; Garcia, Luis Maria (Wiley, 2014)This study determined the effect of human chorionic gonadotropin (hCG) and handling stress on the spermiation and milt response of silver perch Leiopotherapon plumbeus based on the measurement of spermatocrit, sperm density, ... -
Biology and hatchery rearing of the silver therapon Leiopotherapon plumbeus
Aya, Frolan; Garcia, Luis Maria (Aquaculture Department, Southeast Asian Fisheries Development Center, 2020-07)Known for its tasty flesh, silver therapon, locally known as ayungin, has been regarded to be one of the most valuable edible native freshwater species in the Philippines. Demands for this fish species remain high which ... -
Effects of weaning on survival and growth of silver therapon (Leiopotherapon plumbeus) larvae fed live and artificial diet
Aya, Frolan; Nillasca, Vicar Stella N.; Garcia, Luis Maria (Wiley, 2021-10)This study examined the effects of early weaning strategies on growth and survival of the silver therapon Leiopotherapon plumbeus larvae. In Trial 1, four larval age groups (8, 14, 20 and 26 days post‐hatch (dph)) were ...