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The effect of abiotic factors on the hatching of Moina micrura Kurz, 1874 (Crustacea: Cladocera) ephippial eggs
Rojas, N. E. T; Marins, M. A; Rocha, O.
  • Rojas, N. E. T; Instituto de Pesca. Centro de Pesquisa em Reproduçäo e Larvicultura. Säo Paulo. BR
  • Marins, M. A; Universidade Federal de Säo Carlos. Departamento de Ecologia e Biologia Evolutiva. Säo Carlos. BR
  • Rocha, O; Universidade Federal de Säo Carlos. Departamento de Ecologia e Biologia Evolutiva. Säo Carlos. BR
Braz. j. biol ; 61(3): 371-376, Aug. 2001. tab, graf
Article in English | LILACS | ID: lil-305143
RESUMO
The roles of some abiotic factors in controlling the hatching rates of Moina micrura ephippial eggs were investigated. Determination of optimum hatching conditions would be important in developing the use of this species as a food for fish larvae in aquaculture. Ephippia were exposed to different treatments in the laboratory, and monitored for hatching over a period of seven days. Optimum hatching conditions were pH 5-9, temperature 25ºC, photoperiod eight or more hours light per day and light intensity equal to or greater than 850 lux. Differences in water ionic concentrations (from deionized water to 880 mg.LFACE="Symbol">-1 of selected salts) had no effect
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Full text: Available Index: LILACS (Americas) Main subject: Ovum / Crustacea Limits: Animals Language: English Journal: Braz. j. biol Journal subject: Biology Year: 2001 Type: Article Affiliation country: Brazil Institution/Affiliation country: Instituto de Pesca/BR / Universidade Federal de Säo Carlos/BR

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Full text: Available Index: LILACS (Americas) Main subject: Ovum / Crustacea Limits: Animals Language: English Journal: Braz. j. biol Journal subject: Biology Year: 2001 Type: Article Affiliation country: Brazil Institution/Affiliation country: Instituto de Pesca/BR / Universidade Federal de Säo Carlos/BR