title: [Effects of population density and culture volume on the growth and reproduction of Moina irrasa].
abstract: A laboratory experiment was conducted to study the effects of different population density (D1 : 100 ind x L(-1), D2 : 150 ind x L(-1), D3 : 300 ind x L(-1)) and culture volume (V1: 50 mL, V2 : 100 mL, V3 : 400 mL) on the growth and reproduction of Moina irrasa at 25 degrees C. At the same culture density, the body length of the M. irrasa females at their first pregnancy, the first brood, and the total offsprings per female decreased with the increase of culture volumes, while the sex ratio (male/female) of the offsprings was in adverse. At the same culture volumes, the total offsprings per female decreased with the increase of culture density. At D1 V1, the body length of the females at their first pregnancy (0.95 +/- 0.10 mm) and the total offsprings (171.3 +/- 19.8 ind) per female were the maximum. At D3V2, the sex ratio was the maximum (0.54 +/- 0.05). Culture density, culture volume, and their interactions significantly affected the total offsprings per female and the sex ratio (P < 0.001).
authors.affiliation: Anhui Province Key Laboratory of Resource and Plant Biology, School of Life Science, Huaibei Normal University, Huaibei 235000, Anhui, China. Lyna882517@163.com
authors.forename: Li-Na
authors.initials: LN
authors.lastname: Chen
authors.forename: Yu-Ying
authors.initials: YY
authors.lastname: Li
authors.forename: Dao-Gui
authors.initials: DG
authors.lastname: Deng
authors.forename: Xian-Wen
authors.initials: XW
authors.lastname: Jin
authors.forename: Qian
authors.initials: Q
authors.lastname: Ge
authors.forename: Shao-Qin
authors.initials: SQ
authors.lastname: Wang
mesh_terms: D000818:Animals; D033361:Cladocera / Q000254:growth & development* / Q000502:physiology*; D046508:Culture Techniques / Q000379:methods*; D005260:Female; D008297:Male; D011156:Population Density; D012098:Reproduction / Q000502:physiology*