Multiple Mating and Female Fitness in Drosophila pseudoobscura

Evolution ◽  
1983 ◽  
Vol 37 (4) ◽  
pp. 714 ◽  
Author(s):  
Monte E. Turner ◽  
Wyatt W. Anderson
Keyword(s):  
Multiple Mating ◽  
Drosophila Pseudoobscura ◽  
Female Fitness

scholarly journals MULTIPLE MATING AND FEMALE FITNESS IN DROSOPHILA PSEUDOOBSCURA

Evolution ◽  
1983 ◽  
Vol 37 (4) ◽  
pp. 714-723 ◽  
Author(s):  
Monte E. Turner ◽  
Wyatt W. Anderson
Keyword(s):  
Multiple Mating ◽  
Drosophila Pseudoobscura ◽  
Female Fitness

Polyandry, multiple mating, and female fitness in a water strider Aquarius paludum

2009 ◽  
Vol 64 (4) ◽  
pp. 657-664 ◽  
Author(s):  
Katri Ronkainen ◽  
Arja Kaitala ◽  
Sami M. Kivelä
Keyword(s):  
Multiple Mating ◽  
Water Strider ◽  
Female Fitness

No fitness consequence of experimentally induced polyandry in a monandrous wasp

Behaviour ◽  
2010 ◽  
Vol 147 (1) ◽  
pp. 85-102 ◽  
Author(s):  
◽  
Keyword(s):  
General Feature ◽  
Multiple Mating ◽  
Parasitic Wasp ◽  
Sperm Storage ◽  
Rapid Decline ◽  
Female Fitness ◽  
Offspring Production ◽  
Spalangia Endius ◽  
Storage Organs ◽  
Fitness Consequence

AbstractTests of the effects of multiple mating by females on female fitness have been primarily with polyandrous species, where a benefit to multiple mating has usually been found. In contrast, no such benefit was found here for the parasitic wasp Spalangia endius, a highly monandrous species. Females that mated only once prior to oviposition exhibited a rapid decline in daughter production long before they died. The production of daughters, but not sons, is sexual in this species, i.e., requires sperm. Nevertheless, females with greatly decreased daughter production did not then remate. When such females were experimentally manipulated into copulating with a second male, additional sperm were stored in the females' sperm storage organs. However, this sperm increase had no significant effect on daughter production, total offspring production or longevity. There was no evidence that either immediate or delayed polyandry currently benefits females. The lack of benefit may be a general feature of highly monandrous species or a common feature of parasitic hymenopterans regardless of mating system.

scholarly journals How multiple mating by females affects sexual selection

2013 ◽  
Vol 368 (1613) ◽  
pp. 20120046 ◽  
Author(s):  
Stephen M. Shuster ◽  
William R. Briggs ◽  
Patricia A. Dennis
Keyword(s):  
Sexual Selection ◽  
Life History ◽  
Multiple Mating ◽  
Female Offspring ◽  
Relative Fitness ◽  
Male Mating ◽  
Female Fitness ◽  
Offspring Number ◽  
Reproductive Life ◽  
Sperm Utilization

Multiple mating by females is widely thought to encourage post-mating sexual selection and enhance female fitness. We show that whether polyandrous mating has these effects depends on two conditions. Condition 1 is the pattern of sperm utilization by females; specifically, whether, among females, male mating number, m (i.e. the number of times a male mates with one or more females) covaries with male offspring number, o . Polyandrous mating enhances sexual selection only when males who are successful at multiple mating also sire most or all of each of their mates' offspring, i.e. only when Cov ♂ ( m , o ), is positive. Condition 2 is the pattern of female reproductive life-history; specifically, whether female mating number, m , covaries with female offspring number, o . Only semelparity does not erode sexual selection, whereas iteroparity (i.e. when Cov ♀ ( m , o ), is positive) always increases the variance in offspring numbers among females, which always decreases the intensity of sexual selection on males. To document the covariance between mating number and offspring number for each sex, it is necessary to assign progeny to all parents, as well as identify mating and non-mating individuals. To document significant fitness gains by females through iteroparity, it is necessary to determine the relative magnitudes of male as well as female contributions to the total variance in relative fitness. We show how such data can be collected, how often they are collected, and we explain the circumstances in which selection favouring multiple mating by females can be strong or weak.

Multiple mating increases female fitness in Drosophila simulans

2008 ◽  
Vol 76 (3) ◽  
pp. 963-970 ◽  
Author(s):  
Michelle L. Taylor ◽  
Clare Wigmore ◽  
David J. Hodgson ◽  
Nina Wedell ◽  
David J. Hosken
Keyword(s):  
Multiple Mating ◽  
Drosophila Simulans ◽  
Female Fitness

scholarly journals VIRILITY DEFICIENCY AND THE SEX-RATIO TRAIT IN DROSOPHILA PSEUDOOBSCURA. II. MULTIPLE MATING AND OVERALL VIRILITY SELECTION

Genetics ◽  
1983 ◽  
Vol 105 (3) ◽  
pp. 663-679
Author(s):  
Chung-I Wu
Keyword(s):  
Theoretical Model ◽  
Sex Ratio ◽  
Multiple Mating ◽  
The Other ◽  
Drosophila Pseudoobscura ◽  
Relative Importance ◽  
Fitness Components ◽  
Female Remating

ABSTRACT Previous studies on fitness components of Drosophila have shown the over-whelming importance of virility selection. In this study, virility selection is further partitioned into two components—one with respect to virgin females and the other with respect to nonvirgin females. The relative importance of the two components to the overall virility selection depends on the remating tendency of females which is investigated here. A theoretical model is then proposed to estimate virility selection under the condition of frequent female remating. The model is tested experimentally. When this model is applied to the Sex-Ratio system of D. pseudoobscura, Sex-Ratio males are found to suffer substantial virility reduction. The significance of this finding to the Sex-Ratio problem is discussed.

On Multiple Mating and Female Fitness: Comments on Loman et al. (1988)

Oikos ◽  
1989 ◽  
Vol 54 (2) ◽  
pp. 248 ◽  
Author(s):  
Göran Arnqvist ◽  
Goran Arnqvist
Keyword(s):  
Multiple Mating ◽  
Female Fitness
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