Hatchery, nursery and grow-out management of the Asian catfish Clarias macrocephalus
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The Asian catfish, Clarias macrocephalus is a native but fast disappearing species in the Philippines. It is locally named as hito to Tagalogs, paltat to Ilocanos, pantat to Cebuanos and Ilongos, and Ito to Pampangueños. They are called catfishes because they posses whisker-like structure near their mouth called barbells. Among the Clarias species Clarias macrocephalus is preferred because of its tender and delicious meat. Many people believed that the disappearance of the native catfish is due to interbreeding with Thai catfish, Clarias batrachus and the rampant use of pesticides in the ricefields that "poison" the breeding grounds of this species. At SEAFDEC/AQD, standardized techniques were developed in the laboratory for breeding and seed production of this species. Verification studies are on going on nursery techniques in tanks and ponds and grow out culture in ponds. The topics to be discussed are mostly based on SEAFDEC's research studies and hands-on experiences on the native catfish Clarias macrocephalus.
Bombeo, R. F. (2001). Hatchery, nursery and grow-out management of the Asian catfish Clarias macrocephalus. In Fishlink 2001, 29-31 May 2001 (8 pp). Iloilo City, Philippines: University of the Philippines Aquaculture Society, Inc.
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Effect of season on oocyte development and serum steroid hormones in LHRHa and pimozide-injected catfish Clarias macrocephalus (Günther) Tan-Fermin, Josefa D.; Marte, Clarissa L.; Ueda, Hiroshi; Adachi, Shinji; Yamauchi, Kohei (Japanese Society of Fisheries Science, 1999)Oocyte and blood samples were taken from gravid female catfish Clarias macrocephalus at 4-h intervals to monitor the stage of oocyte development and serum steroid hormone profiles after injection of luteinizing hormone-releasing ...
Seminal plasma composition, sperm motility, and milt dilution in the Asian catfish Clarias macrocephalus (Gunther) Tan-Fermin, Josefa D.; Miura, Takeshi; Adachi, Shinji; Yamauchi, Kohei (Elsevier, 1999)Ionic composition of the seminal plasma and factors that initiate sperm motility in the freshwater Asian catfish Clarias macrocephalus, were examined to develop an artificial seminal plasma (ASP) that can be used to dilute ...
Tan-Fermin, Josefa D.; Emata, Arnil C. (Blackwell Publishing, 1993)Experiments were conducted to determine the optimum dose of luteinizing hormone-releasing hormone analogue (LHRHa) and pimozide (PIM) injected simultaneously to yield a high ovulation rate and produce sufficient eggs in ...