Influence of temperature on egg hatching, growth and survival of larvae of Heterobranchus longifilis Val. 1840 (Teleostei: Clariidae)

Autor:	Francis M. Nwosu, S. Holzlöhner
Rok vydání:	2000
Předmět:	Teleostei Larva Animal science Human fertilization Hatching Ecology Seasonal breeder Aquatic animal Heterobranchus Aquatic Science Biology biology.organism_classification Incubation
Zdroj:	Journal of Applied Ichthyology. 16:20-23
ISSN:	1439-0426 0175-8659
DOI:	10.1046/j.1439-0426.2000.00144.x
Popis:	Eggs of Heterobranchus longifilis Val. 1840 were artificially fertilized and incubated at a range of temperatures (20, 23, 25, 27, 29 and 32°C). The time from fertilization to hatching decreased with increasing temperature. No eggs survived to hatch at 20 and 32°C incubation temperatures, while at 23 and 29°C hatching was only minimal. Optimum hatching was obtained at 25 and 27°C, which corresponds to the ambient temperature range during the breeding season. Larvae of H. longifilis were reared for 11 days post-hatching at 20, 25, 27, 29 and 32°C. Growth increased with temperature (P
Databáze:	OpenAIRE
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