Effect of light periodicity and intensity on the growth and survival of Heterobranchus longifilis Val. 1840 (Teleostei: Clariidae) larvae after 14 days of rearing

Autor:	Francis M. Nwosu, S. Holzlöhner
Rok vydání:	2000
Předmět:	photoperiodism Teleostei Light intensity Larva Animal science biology Aquatic animal Growth rate Heterobranchus Anatomy Aquatic Science biology.organism_classification Intensity (physics)
Zdroj:	Journal of Applied Ichthyology. 16:24-26
ISSN:	1439-0426 0175-8659
DOI:	10.1046/j.1439-0426.2000.00145.x
Popis:	Heterobranchus longifilis Val. 1840 larvae were reared under two light intensities, 30 lux and 915 lux, and at varying photoperiods. Results show that maximum survival (82.5 ± 6.5% respectively) at 30 lux was obtained at continuous illumination [24 h light (L)], while the minimum (65 ± 21.2%) was at the 6 h L : 18 h dark (D) treatment. Survival at 24 h D averaged 71.3 ± 6.3%, with no significant difference (P
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::34e26422703d05d30818d9e0ba86e145 https://doi.org/10.1046/j.1439-0426.2000.00145.x Zobrazit plný text záznamu