A Test of Local Mate Competition Theory with a Solitary Species of Parasitoid Wasp, Spalangia Cameroni

Oikos ◽  
1989 ◽  
Vol 55 (1) ◽  
pp. 50 ◽  
Author(s):  
Bethia Hurlbutt King
Keyword(s):  
Parasitoid Wasp ◽  
Local Mate Competition ◽  
Mate Competition ◽  
Competition Theory ◽  
Local Mate ◽  
Solitary Species

Effects of constrained females on offspring sex ratios of Nasonia vitripennis in relation to local mate competition theory

2004 ◽  
Vol 82 (12) ◽  
pp. 1969-1974 ◽  
Author(s):  
B H King ◽  
J A D'Souza
Keyword(s):  
Sex Ratio ◽  
Empirical Studies ◽  
Virgin Female ◽  
Parasitoid Wasp ◽  
Local Mate Competition ◽  
Mate Competition ◽  
Nasonia Vitripennis ◽  
Competition Theory ◽  
Local Mate ◽  
Mated Female

Empirical studies of how constrained females affect sex ratio are few. Constrained females are those that can produce only sons (e.g., in haplodiploid species, females that have not mated or older females that have used up their sperm). In the parasitoid wasp Nasonia vitripennis (Walker, 1836), failure to mate soon after emergence increased the probability of a female being constrained and thus affected sex ratio directly. Local mate competition theory shows that whether a female is constrained can also affect sex ratio indirectly by affecting what sex ratio other females produce. However, this was not the case in N. vitripennis. A female's sex ratio was not significantly different when she was with another young mated female versus a virgin female or an old mated female depleted of sperm. These results suggest that N. vitripennis females may be unable to recognize whether another female is constrained. The increased proportion of sons in response to other females relative to when alone did not persist the day after exposure.

scholarly journals Local mate competition modifies the costs of mating in a mostly monandrous parasitoid wasp

2019 ◽  
Vol 30 (2) ◽  
pp. 417-425 ◽  
Author(s):  
Rebecca A Boulton ◽  
Nicola Cook ◽  
E V (Ginny) Greenway ◽  
Georgina L Glaser ◽  
Jade Green ◽  
...  
Keyword(s):  
Parasitoid Wasp ◽  
Local Mate Competition ◽  
Mate Competition ◽  
Local Mate

Study on mating ecology and sex ratio of three internally ovipositing fig wasps of Ficus curtipes

2009 ◽  
Vol 100 (2) ◽  
pp. 241-245
Author(s):  
F.P. Zhang ◽  
D.R. Yang
Keyword(s):  
Sex Ratio ◽  
Sex Allocation ◽  
Mating Behaviour ◽  
Local Mate Competition ◽  
Mate Competition ◽  
Mating Pattern ◽  
Fig Wasps ◽  
Competition Theory ◽  
Male Dispersal ◽  
Local Mate

AbstractStudies on mating ecology and sex allocation in fig-parasitizing wasps ovipositing from outside the fig have given valuable insights into known factors that are responsible for the theory of sex ratio. Similarly, internally ovipositing fig-parasitizing wasps and fig-pollinating wasps provide interesting models for comparative analysis. In addition to the fig-pollinating wasp Eupristina sp., we found that Ficus curtipes hosts two species of internally ovipositing fig-parasitizing wasps: D. yangi and Lipothymus sp. Eupristina sp. males showed less aggression. Eupristina sp. has wingless males that mate only within the natal patch, providing excellent examples of full local-mate competition. D. yangi males showed high levels of aggression and lethal combat. D. yangi has winged males but mate mostly within the natal patch. Only a few matings occur after male dispersal. Its sex ratio was lower than the prediction of partial local mate competition theory. Wingless male Lipothymus sp., which mate partly after dispersal, did not present fatal fight. Therefore, the mating behaviour of D. yangi and Lipothymus sp. did not follow predicted patterns, based on wing morph. The mating pattern of D. yangi and Lipothymus sp. should follow the partial local mate competition theory. Furthermore, there was not a significant correlation between the proportion of males and the proportion of fruit parasitized in both winged D. yangi males and wingless Lipothymus sp. males.

scholarly journals Sex Ratios under Asymmetrical Local Mate Competition: Theory and a Test with Parasitoid Wasps

2005 ◽  
Vol 166 (3) ◽  
pp. 301-316 ◽  
Author(s):  
David M. Shuker ◽  
Ido Pen ◽  
Alison B. Duncan ◽  
Sarah E. Reece ◽  
Stuart A. West
Keyword(s):  
Sex Ratios ◽  
Local Mate Competition ◽  
Parasitoid Wasps ◽  
Mate Competition ◽  
Competition Theory ◽  
Local Mate

scholarly journals Cooperative interactions among females and even more extraordinary sex ratios

2020 ◽  
Author(s):  
Ryosuke Iritani ◽  
Stuart A West ◽  
Jun Abe
Keyword(s):  
Sex Ratio ◽  
Sex Ratios ◽  
Structured Populations ◽  
Local Mate Competition ◽  
Mate Competition ◽  
Wasp Species ◽  
Cooperative Interactions ◽  
Competition Theory ◽  
Local Mate ◽  
Biased Sex Ratio

AbstractHamilton’s local mate competition theory provided an explanation for extraordinary female biased sex ratios in a range of organisms. When mating takes place locally, in structured populations, a female biased sex ratio is favoured to reduce competition between related males, and to provide more mates for males. However, there are a number of wasp species where the sex ratios appear to more female biased than predicted by Hamilton’s theory. We investigated theoretically the extent to which cooperative interactions between related females can interact with local mate competition to favour even more female biased sex ratios. We found that: (i) cooperative interactions between females can lead to sex ratios that are more female biased than predicted by local competition theory alone; (ii) sex ratios can be more female biased when the cooperative interactions are offspring helping parents before dispersal, rather than cooperation between siblings after dispersal. Our results can be applied to a range of organisms, and provide an explanation for the extreme sex ratio biases that have been observed in Sclerodermus and Melittobia wasps.

Local mate competition in the solitary parasitoid wasp Ooencyrtus kuvanae

2010 ◽  
Vol 65 (5) ◽  
pp. 1071-1077 ◽  
Author(s):  
Ummat Somjee ◽  
Kelly Ablard ◽  
Bernard Crespi ◽  
Paul W. Schaefer ◽  
Gerhard Gries
Keyword(s):  
Parasitoid Wasp ◽  
Local Mate Competition ◽  
Mate Competition ◽  
Local Mate ◽  
Solitary Parasitoid ◽  
Ooencyrtus Kuvanae
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