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The mistreatment of covariate interaction terms in linear model analyses of behavioural and evolutionary ecology studies
- L. Engqvist
- Environmental ScienceAnimal Behaviour
- 1 October 2005
Pitfalls in experiments testing predictions from sperm competition theory
These and some other pitfalls related to manipulations of SC risk and intensity are discussed and how to avoid them are suggested.
Theoretical influence of female mating status and remating propensity on male sperm allocation patterns
With the use of a genetic algorithm, it is found that males should allocate more sperm in matings with virgin females when female mating frequency is relatively high, whereas low remating rates will select for higher effort inMatings with nonvirgin females.
Meta‐analysis of variation: ecological and evolutionary applications and beyond
Meta‐analysis has become a standard way of summarizing empirical studies in many fields, including ecology and evolution. In ecology and evolution, meta‐analyses comparing two groups (usually…
Cryptic male choice: sperm allocation strategies when female quality varies
The results show that males should invest more sperm in initial copulations than in subsequent copulations as a male might fail to mate again, and with increasing variance in female quality, males conserved more sperm for later copulations.
THE VARIABILITY IS IN THE SEX CHROMOSOMES
- K. Reinhold, L. Engqvist
- Biology, Environmental ScienceEvolution; international journal of organic…
- 1 December 2013
It is argued that the pattern demonstrated here for sex‐specific body size variability is likely to apply to any trait and needs to be considered when testing predictions about sex‐ specific variability and sexual selection.
Nuptial gift consumption influences female remating in a scorpionfly: male or female control of mating rate?
- L. Engqvist
- BiologyEvolutionary Ecology
- 29 January 2007
It is found that mated females were less prone to copulate than virgin females, despite female benefits of multiple matings and the remating interval was significantly longer if the first copulation was long compared to shorter matings, suggesting a mating-induced refractory period.
The h-index and self-citations.
Strategic male mating effort and cryptic male choice in a scorpionfly
Only males in poor condition choose cryptically, producing larger salivary masses in copulations with females of high fecundity, and this prediction is examined in the scorpionfly Panorpa cognata.
Emerging issues in the evolution of animal nuptial gifts
A comprehensive definition and classification scheme for nuptial gifts (including those transferred by simultaneous hermaphrodites), evolutionary predictions for different gift types are outlined, and some research directions are highlighted to help facilitate progress in this field.