Temperature and age affect the life history characteristics and fatty acid profiles of Moina macrocopa (Cladocera)
Por:
Gama-Flores J.L., Huidobro-Salas M.E., Sarma, SSS, Nandini S., Zepeda-Mejia R., Gulati R.D.
Publicada:
1 oct 2015
Resumen:
Demographic responses and fatty acid profiles of Moina macrocopa were quantified under different temperature regimes (20°C, 25°C and 30°C and diurnally variable 20-30°C) and at fixed ration (10.65µgDWml -1 ) of Chlorella. Highest constant temperature (30°C) reduced the density of M. macrocopa. The cladocerans under the fluctuating temperature regime too had lower population growth (about 50% lower than that at constant 25°C). The survivorship of M. macrocopa was higher at 20°C than that at 25°C and 30°C or at variable temperature regime. Gross and net reproductive rates were higher at 25°C. At 20°C, neonates had the highest proportion (67%) of myristic, palmitic and stearic acids while the adults had the lowest (26%) proportion. For both adults and neonates, palmitoleic, linoleic and linolenic comprised of 15-35% of the total fatty acids. Higher percentage (19%) of linoleic acid was present in adults than neonates (7%). Adults had linolenic acid level which was 3-times higher than in neonates. Linoleic and linolenic fatty acids decreased with increasing temperature for neonates and adults from 20°C to 30°C. The demographic responses and fatty acid profiles of M. macrocopa were discussed in relation to level and mode of temperature exposure. © 2015 Elsevier Ltd.
Filiaciones:
Gama-Flores J.L.:
Univ Nacl Autonoma Mexico, Carrera Biol, Tlalnepantla 54090, State Of Mexico, Mexico
Huidobro-Salas M.E.:
Univ Nacl Autonoma Mexico, Carrera Biol, Tlalnepantla 54090, State Of Mexico, Mexico
Sarma, SSS:
Univ Nacl Autonoma Mexico, Div Res & Postgrad Studies, Lab Aquat Zool, Tlalnepantla 54090, State Of Mexico, Mexico
Nandini S.:
Univ Nacl Autonoma Mexico, Div Res & Postgrad Studies, Lab Aquat Zool, Tlalnepantla 54090, State Of Mexico, Mexico
Zepeda-Mejia R.:
Univ Nacl Autonoma Mexico, Carrera Biol, Tlalnepantla 54090, State Of Mexico, Mexico
Gulati R.D.:
Department of Aquatic Ecology, NIOO/Netherlands Institute of Ecology, Wageningen, 6708 PB, Netherlands
|