A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success

Engqvist L (2013)
Evolution 67(5): 1396-1405.

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Journal Article | Published | English
Abstract
A complete understanding of male reproductive success, and thus sexual selection, often requires an insight into male success in sperm competition. Genuine conclusions on male sperm competitiveness can only be made in real competitive situations. However, statistical analyses of sperm competitiveness from fertilization success data have been shown to be problematic. Here, I first outline a comprehensive general description of the different additive and nonadditive elements relevant for the outcome of sperm competition staged between two males. Based on this description, I will highlight two main problems that are frequently encountered in experiments aiming at estimating sperm competitiveness. First, I focus on potential problems when using standardized competitors versus random mating trials, because trials with standardized competitors do not allow generalization if malemale interactions are important. Second, I illustrate the necessity to analyze data on the logit scale rather than on raw proportions, because only the logit scale allows a clean separation of additive and nonadditive effects (i.e., male x male and female x male interactions).
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Engqvist L. A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success. Evolution. 2013;67(5):1396-1405.
Engqvist, L. (2013). A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success. Evolution, 67(5), 1396-1405.
Engqvist, L. (2013). A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success. Evolution 67, 1396-1405.
Engqvist, L., 2013. A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success. Evolution, 67(5), p 1396-1405.
L. Engqvist, “A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success”, Evolution, vol. 67, 2013, pp. 1396-1405.
Engqvist, L.: A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success. Evolution. 67, 1396-1405 (2013).
Engqvist, Leif. “A general description of additive and non-additive elements of sperm competitiveness and their relation to male fertilization success”. Evolution 67.5 (2013): 1396-1405.
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Female effects, but no intrinsic male effects on paternity outcome in crickets.
Simmons LW, Lovegrove M, Almbro M., J. Evol. Biol. 27(8), 2014
PMID: 24836498
Delineating the roles of males and females in sperm competition.
Evans JP, Rosengrave P, Gasparini C, Gemmell NJ., Proc. Biol. Sci. 280(1772), 2013
PMID: 24266039

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