Environmentally driven variability in size-selective females’ mating frequency of bush-cricket Pholidoptera griseoaptera

Kaňuch, Peter; Jarčuška, Benjamín; Kovacs, L.; Krištín, Anton

doi:10.1007/s10682-015-9784-5

Cited by 5 publications

(12 citation statements)

References 54 publications

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“…After passing through six to seven nymphal instars, individuals become adult in mid‐ to late July (Benton ; Kaňuch et al . ). The peak of mating activity occurs in August (Kaňuch et al .…”

Section: Methodsmentioning

confidence: 97%

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Paternity analysis of wild‐caught females shows that sperm package size and placement influence fertilization success in the bushcricket Pholidoptera griseoaptera

et al. 2017

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In species where females store sperm, males may try to influence paternity by the strategic placement of sperm within the female's sperm storage organ. Sperm may be mixed or layered in storage organs, and this can influence sperm use beyond a 'fair raffle'. In some insects, sperm from different matings is packaged into discrete packets (spermatodoses), which retain their integrity in the female's sperm storage organ (spermatheca), but little is known about how these may influence patterns of sperm use under natural mating conditions in wild populations. We examined the effect of the size and position of spermatodoses within the spermatheca and number of competing ejaculates on sperm use in female dark bushcrickets (Pholidoptera griseoaptera) that had mated under unmanipulated field conditions. Females were collected near the end of the mating season, and seven hypervariable microsatellite loci were used to assign paternity of eggs laid in the laboratory. Females contained a median of three spermatodoses (range 1-6), and only six of the 36 females contained more than one spermatodose of the same genotype. Both the size and relative placement of the spermatodoses within the spermatheca had a significant effect on paternity, with a bias against smaller spermatodoses and those further from the single entrance/exit of the spermatheca. A higher number of competing males reduced the chances of siring offspring for each male. Hence, both spermatodose size and relative placement in the spermatheca influence paternity success.

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Section: Methodsmentioning

confidence: 97%

“…The peak of mating activity occurs in August (Kaňuch et al . ), but individuals can survive into the late autumn (Benton ). Both sexes are flightless, but nevertheless have good dispersal ability (Diekötter et al .…”

Section: Methodsmentioning

confidence: 99%

Paternity analysis of wild‐caught females shows that sperm package size and placement influence fertilization success in the bushcricket Pholidoptera griseoaptera

et al. 2017

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“…Subsequently, we measured the time until first mating and the total mating duration within the test time of 45 min. Additionally, we measured the body mass of each individual, as body mass and size can affect the mating behavior of several insect species (Arnqvist et al 1996;Engqvist et al 2014;Kanuch et al 2015).…”

Section: Mating Experimentsmentioning

confidence: 99%

Consequences of mating with siblings and nonsiblings on the reproductive success in a leaf beetle

Müller

2016

Ecology and Evolution

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Choosing a suitable mating partner is crucial for the fitness of an individual, whereby mating with siblings often results in inbreeding depression. We studied consequences of mating with siblings versus nonsiblings in the mustard leaf beetle, Phaedon cochleariae (Coleoptera: Chrysomelidae), on lifetime reproductive traits. Furthermore, we analyzed whether cuticular hydrocarbon (CHC) profiles are family specific and could potentially influence the mating behavior of young adults. We hypothesized a reduced reproductive success of females mated with siblings and a more rapid mating of males with nonsiblings. The hatching rate from eggs of sibling pairs was lower compared to that of nonsibling pairs, pointing to inbreeding depression. Furthermore, the number of eggs laid by females decreased over time in both sibling and nonsibling pairs. Interestingly, the CHC profiles and the body mass differed between families. However, the beetles did not avoid siblings and accepted them as readily as nonsiblings for mating in no‐choice tests. In summary, although it had negative consequences to mate a sibling and although siblings could potentially be recognized by their CHC profiles, the beetles did not show a delayed mating with siblings. Our results indicate that P. cochleariae beetles have not developed a precopulatory mechanism to avoid inbreeding, at least under the test conditions applied here. We predict that instead a polyandrous mating system and/or postcopulatory mechanisms might have evolved in this species by which inbreeding costs can be reduced.

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“…In conclusion, we are still far from disentangling and understanding mating patterns of nuptial gift-giving bush-crickets, in particular when it comes to other drivers, such as environmental change, disruption of gene flow, immigration or other demographic events (Kaňuch et al, 2015(Kaňuch et al, , 2012 and another adaptive or plastic responses in behavior are likely. This suggests that the body size of this nuptial gift-giving species is an important sexual trait in such an antagonistic and highly polygamous system of reproduction, according to which both sexes choose their optimal mating partner.…”

Section: Discussionmentioning

confidence: 99%

“…to control for the environmentally driven variability in mating frequency that was found in this species (Kaňuch, Jarčuška, Kovács, & Krištín, 2015). The sites differed according to altitude (170 and 1,180 m a.s.l.)…”

Section: Lab Rearing Of Insectsmentioning

confidence: 99%

Size‐dependent mating pattern in a nuptial gift‐giving insect

Dorková

Naďo

Jarčuška

et al. 2018

Ecology and Evolution

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The reproductive interests of females and males often diverge in terms of the number of mating partners, an individual’s phenotype, origin, genes, and parental investment. This conflict may lead to a variety of sex‐specific adaptations and also affect mate choice in both sexes. We conducted an experiment with the bush‐cricket Pholidoptera griseoaptera (Orthoptera, Tettigoniidae), a species in which females receive direct nutritional benefits during mating. Mated individuals could be assigned due to the genotype of male spermatodoses, which are stored in the female’s spermatheca. After 3 weeks of possible copulations in established mating groups which were random replications with four females and males we did not find consistent assortative mating preference regarding to body size of mates. However, our results showed that the frequency of within‐pair copulations (192 analyzed mating events in 128 possible pairwise combinations) was positively associated with the body size of both mated individuals with significant interaction between sexes (having one mate very large, association between body size and the number of copulations has weaken). Larger individuals also showed a higher degree of polygamy. This suggests that body size of this nuptial gift‐giving insect species is an important sexual trait according to which both sexes choose their optimal mating partner.

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Environmentally driven variability in size-selective females’ mating frequency of bush-cricket Pholidoptera griseoaptera

Cited by 5 publications

References 54 publications

Paternity analysis of wild‐caught females shows that sperm package size and placement influence fertilization success in the bushcricket Pholidoptera griseoaptera

Paternity analysis of wild‐caught females shows that sperm package size and placement influence fertilization success in the bushcricket Pholidoptera griseoaptera

Consequences of mating with siblings and nonsiblings on the reproductive success in a leaf beetle

Size‐dependent mating pattern in a nuptial gift‐giving insect

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