Sperm pre-fertilization thermal environment shapes offspring phenotype and performance

The Journal of Experimental Biology
Jukka KekäläinenHannu Huuskonen

Abstract

The sperm pre-fertilization environment has recently been suggested to mediate remarkable transgenerational consequences for offspring phenotype (transgenerational plasticity, TGB), but the adaptive significance of the process has remained unclear. Here, we studied the transgenerational effects of sperm pre-fertilization thermal environment in a cold-adapted salmonid, the European whitefish (Coregonus lavaretus). We used a full-factorial breeding design where the eggs of five females were fertilized with the milt of 10 males that had been pre-incubated at two different temperatures (3.5°C and 6.5°C) for 15 h prior to fertilization. Thermal manipulation did not affect sperm motility, cell size, fertilization success or embryo mortality. However, offspring that were fertilized with 6.5°C-exposed milt were smaller and had poorer swimming performance than their full-siblings that had been fertilized with the 3.5°C-exposed milt. Furthermore, the effect of milt treatment on embryo mortality varied among different females (treatment×female interaction) and male-female combinations (treatment×female×male interaction). Together, these results indicate that sperm pre-fertilization thermal environment shapes offspring phenotype and post-h...Continue Reading

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Citations

Jan 23, 2019·Reproduction : the Official Journal of the Society for the Study of Fertility·Jonathan P EvansFrancisco Garcia-Gonzalez
Jan 28, 2020·Journal of Evolutionary Biology·Jukka KekäläinenHannu Huuskonen
Jan 16, 2020·Animals : an Open Access Journal From MDPI·Radosław Kajetan KowalskiBeata Sarosiek
Apr 20, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Angela J Crean, Simone Immler
Nov 24, 2020·Molecular and Cellular Endocrinology·Suvi RuuskanenAndreas Nord
May 3, 2021·Journal of Fish Biology·Sareh YaripourRaine Kortet

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