Temperature and age affect the life history characteristics and fatty acid profiles of Moina macrocopa (Cladocera)

José Luis Gama-Flores, María Elena Huidobro-Salas, S.S.S. Sarma, S. Nandini, Ricardo Zepeda-Mejia, Ramesh D. Gulati

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Abstract

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 (10.65 µg DW ml−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.
Original languageEnglish
Pages (from-to)135-142
Number of pages8
JournalJournal of Thermal Biology
Volume53
DOIs
Publication statusPublished - Oct 2015

Keywords

  • Demography
  • Temperature
  • Fatty acids
  • Moina
  • Cladocera
  • international

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    Gama-Flores, J. L., Huidobro-Salas, M. E., Sarma, S. S. S., Nandini, S., Zepeda-Mejia, R., & Gulati, R. D. (2015). Temperature and age affect the life history characteristics and fatty acid profiles of Moina macrocopa (Cladocera). Journal of Thermal Biology, 53, 135-142. https://doi.org/10.1016/j.jtherbio.2015.10.005