scholarly journals The costs and benefits of multiple mating in a mostly monandrous wasp

Evolution ◽  
2015 ◽  
Vol 69 (4) ◽  
pp. 939-949 ◽  
Author(s):  
Rebecca A. Boulton ◽  
David M. Shuker
Keyword(s):  
Multiple Mating ◽  
Costs And Benefits

scholarly journals Costs and benefits of multiple mating in a species with first‐male sperm precedence

2020 ◽  
Vol 89 (4) ◽  
pp. 1045-1054 ◽  
Author(s):  
Leonor R. Rodrigues ◽  
Alexandre R. T. Figueiredo ◽  
Thomas Van Leeuwen ◽  
Isabelle Olivieri ◽  
Sara Magalhães
Keyword(s):  
Multiple Mating ◽  
Sperm Precedence ◽  
Costs And Benefits ◽  
Male Sperm

scholarly journals A sex allocation cost to polyandry in a parasitoid wasp

2015 ◽  
Vol 11 (6) ◽  
pp. 20150205 ◽  
Author(s):  
Rebecca A. Boulton ◽  
David M. Shuker
Keyword(s):  
Sex Allocation ◽  
Multiple Mating ◽  
Sex Ratios ◽  
Parasitoid Wasp ◽  
Laboratory Culture ◽  
Culture Conditions ◽  
Costs And Benefits ◽  
Offspring Production ◽  
Offspring Sex ◽  
In The Wild

The costs and benefits of polyandry are central to understanding the near-ubiquity of female multiple mating. Here, we present evidence of a novel cost of polyandry: disrupted sex allocation. In Nasonia vitripennis , a species that is monandrous in the wild but engages in polyandry under laboratory culture conditions, sexual harassment during oviposition results in increased production of sons under conditions that favour female-biased sex ratios. In addition, females more likely to re-mate under harassment produce the least female-biased sex ratios, and these females are unable to mitigate this cost by increasing offspring production. Our results therefore argue that polyandry does not serve to mitigate the costs of harassment (convenience polyandry) in Nasonia . Furthermore, because males benefit from female-biased offspring sex ratios, harassment of ovipositing females also creates a novel cost of that harassment for males.

scholarly journals Polyandry: the history of a revolution

2013 ◽  
Vol 368 (1613) ◽  
pp. 20120335 ◽  
Author(s):  
Geoff A. Parker ◽  
Tim R. Birkhead
Keyword(s):  
Sexual Selection ◽  
Sexual Conflict ◽  
Multiple Mating ◽  
Mating Frequency ◽  
Costs And Benefits ◽  
Critical Perspective ◽  
History Of ◽  
Males And Females ◽  
Insight Into

We give a historic overview and critical perspective of polyandry in the context of sexual selection. Early approaches tended to obfuscate the fact that the total matings (copulations) by the two sexes is equal, neglecting female interests and that females often mate with (or receive ejaculates from) more than one male (polyandry). In recent years, we have gained much more insight into adaptive reasons for polyandry, particularly from the female perspective. However, costs and benefits of multiple mating are unlikely to be equal for males and females. These must be assessed for each partner at each potential mating between male i and female j , and will often be highly asymmetric. Interests of i and j may be in conflict, with (typically, ultimately because of primordial sex differences) i benefitting and j losing from mating, although theoretically the reverse can also obtain. Polyandry reduces the sex difference in Bateman gradients, and the probability of sexual conflict over mating by: (i) reducing the potential expected value of each mating to males in inverse proportion to the number of mates per female per clutch, and also often by (ii) increasing ejaculate costs through increased sperm allocation. It can nevertheless create conflict over fertilization and increase conflict over parental investment. The observed mean mating frequency for the population (and hence the degree of polyandry) is likely, at least in part, to reflect a resolution of sexual conflict. Immense diversity exists across and within taxa in the extent of polyandry, and views on its significance have changed radically, as we illustrate using avian polyandry as a case study. Despite recent criticisms, the contribution of the early pioneers of sexual selection, Darwin and Bateman, remains generally valid, and should not, therefore, be negated; as with much in science, pioneering advances are more often amplified and refined, rather than replaced with entirely new paradigms.

Using the research on intergroup conflict in nonhuman animals to help inform patterns of human intergroup conflict

2019 ◽  
Vol 42 ◽  
Author(s):  
Amanda R. Ridley ◽  
Melanie O. Mirville
Keyword(s):  
Large Body ◽  
Nonhuman Animal ◽  
Intergroup Conflict ◽  
Costs And Benefits ◽  
Animal Groups ◽  
Interesting Article ◽  
Nonhuman Animals

Abstract There is a large body of research on conflict in nonhuman animal groups that measures the costs and benefits of intergroup conflict, and we suggest that much of this evidence is missing from De Dreu and Gross's interesting article. It is a shame this work has been missed, because it provides evidence for interesting ideas put forward in the article.

Methods for Investigating Costs and Benefits of Prevention Interventions

1998 ◽  
Author(s):  
Pinka Chatterji ◽  
◽  
Lisa Werthamer ◽  
Marsha Lillie-Blanton ◽  
Christine Caffray
Keyword(s):  
Costs And Benefits ◽  
Prevention Interventions
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