New evidence of the copepod maternal food effects on reproduction

Journal of Experimental Marine Biology and Ecology
A LacosteM Laabir

Abstract

Failure of female reproductive capacity in the copepod Calanus helgolandicus was related to number and combination of the phytoplankton species in the diets. The maternal food effects were detectable at different levels: fecundity, oogenesis and hatching. Fecundity and hatching were normal with two single (ca. Isochrysis galbana and Prorocentrum minimum) and one mixed (Phaeodactylum tricornutum+Dunaliella tertiolecta+Pavlova lutherii+I. galbana+P. minimum) diets. With the single P. lutherii diet, fecundity decreased, but hatching remained optimal. The daily egg production and hatching rates decreased significantly in females fed the other single P. tricornutum, D. tertiolecta and mixed (P. tricornutum+D. tertiolecta+P. lutherii+I. galbana) diets, or starved. The fecundity decrease coincided with gonad atresia, which was reversible when P. tricornutum and P. lutherii diets were replaced by P. minimum diet. It was irreversible when D. tertiolecta was replaced by P. minimum, leading to female sterilization expressed by the deterioration of OS3 and OS2 oocytes, as a function of the feeding duration. We assume that atresia of female gonads was caused by the limitation of essential nutrients in food, such as fatty acids, which induce...Continue Reading

References

Mar 8, 1974·Molecular and Cellular Biochemistry·R R Brenner
Jan 23, 2002·Cell Death and Differentiation·R A Knight

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Citations

Feb 10, 2011·Archives of Environmental Contamination and Toxicology·Daniel J WardDianne F Jolley
May 7, 2015·Drug and Chemical Toxicology·Davide Sartori, Andrea Gaion
Jan 2, 2007·Journal of Insect Physiology·Daniel E NayaFrancisco Bozinovic
Jun 3, 2008·Ecotoxicology and Environmental Safety·Ulrika DahlMagnus Breitholtz
Oct 2, 2017·Environmental Science and Pollution Research International·Lei ZhengJiangyue Wu

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