Female mating preferences for outbred versus inbred males are conditional upon the female's own inbreeding status

Pilakouta, Natalie; Smiseth, Per T.

doi:10.1016/j.anbehav.2016.11.023

Cited by 18 publications

(20 citation statements)

References 66 publications

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“…In addition to inbreeding depression early in life, inbred adults were less likely to successfully raise a brood to fledging, and this was not caused by inbred adults having less opportunity due to lower chances of obtaining a dominant position. Inbreeding depression has often been found to reduce fertility, for example through reduced male attractiveness (Pilakouta and Smiseth 2017;Vega-Trejo et al 2017) or reduced parental care behaviors, such as female incubation attentiveness (Pooley et al 2014). Future work will have to show what the underlying mechanisms of the lower reproductive success of inbred individuals are.…”

Section: Inbreeding Depressionmentioning

confidence: 99%

Indirect fitness benefits through extra‐pair mating are large for an inbred minority, but cannot explain widespread infidelity among red‐winged fairy‐wrens

et al. 2019

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Extra‐pair paternity (EPP) has been suggested to improve the genetic quality of offspring, but evidence has been equivocal. Benefits of EPP may be only available to specific individuals or under certain conditions. Red‐winged fairy‐wrens have extremely high levels of EPP, suggesting fitness benefits might be large and available to most individuals. Furthermore, extreme philopatry commonly leads to incestuous social pairings, so inbreeding avoidance may be an important selection pressure. Here, we quantified the fitness benefits of EPP under varying conditions and across life‐stages. Extra‐pair offspring (EPO) did not appear to have higher fitness than within‐pair offspring (WPO), neither in poor years nor in the absence of helpers‐at‐the‐nest. However, EPP was beneficial for closely related social pairs, because inbred WPO suffered an overall 75% reduction in fitness. Inbreeding depression was nonlinear and reduced nestling body condition, first year survival and reproductive success. Our comprehensive study indicates that EPP should be favored for the 17% of females paired incestuously, but cannot explain the widespread infidelity in this species. Furthermore, our finding that fitness benefits of EPP only become apparent for a small part of the population could potentially explain the apparent absence of fitness differences in population wide comparisons of EPO and WPO.

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Section: Inbreeding Depressionmentioning

confidence: 99%

Indirect fitness benefits through extra‐pair mating are large for an inbred minority, but cannot explain widespread infidelity among red‐winged fairy‐wrens

et al. 2019

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“…Inbreeding avoidance has been seen in many species, to avoid mating with siblings (Lihoreau, Zimmer & Rivault 2007; Michalczyk et al , 2011; Liu et al , 2014; Duthie, Bocedi & Reid 2016; Pilakouta & Smiseth 2017). The progeny resulting from inbreeding have less survival, thus females are less willing to mate with siblings than non-siblings (Harper et al , 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Inbreeding in wasps including Habrobracon hebetor leads to the production of homozygous individuals (diploid males) with lower survival and fertility (Petters & Mettus 1980; Antolin et al , 2003). Because inbred individuals are commonly less fit than outbred individuals due to inbreeding depression, inbreeding avoidance mechanisms at precopulatory (Lihoreau, Zimmer & Rivault 2007; Liu et al , 2014; Pilakouta & Smiseth 2017) and postcopulatory (Tregenza & Wedell 2002; Michalczyk et al , 2011; Duthie, Bocedi & Reid 2016) levels are expected to occur to avoid inbreeding depression. Therefore, female wasps basically avoid mating with their brood-mates preventing inbreeding depression (Ode, Antolin & Strand 1995).…”

Section: Introductionmentioning

confidence: 99%

Wolbachiapromote successful sex with siblings

Bagheri

Talebi

Asgari

et al. 2019

Preprint

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21Wolbachia are intracellular α-proteobacteria that have a wide distribution among various 22 arthropods and nematodes. They affect the host reproduction favoring their maternal 23 transmission, which sets up a potential conflict in inbreeding situations when the host avoids 24 sexual reproduction preventing inbreeding depression, while Wolbachia pushes it. In this study, 25 we used the wasp Habrobracon hebetor to test the hypothesis that Wolbachia modulate 26 inbreeding avoidance behaviour and promote sib mating. To test this, we first cured wasps of 27 Wolbachia using tetracycline treatment and produced infected and uninfected isolines. Then, we 28 paired the uninfected and infected females with sibling (inbred) and non-sibling (outbred) males 29 in choice and non-choice experiments. Our results showed no obvious precopulatory inbreeding 30 avoidance in this wasp as brother-sister mating rates (in both choice and nonchoice experiments) 31 were not significantly different form non-sibling pairs, regardless of Wolbachia infection. 32 However, our results indicated that H. hebetor shows a strong postcopulatory inbreeding 33 avoidance behaviour that results in a low fertilization rate of uninfected siblings and therefore 34 high rate of production of male progeny was obtained. We observed higher rates of fertilization 35 success in the Wolbachia-infected lines that resulted in significantly higher female progeny 36 production compared to the uninfected sib mates. Since diploid females are the result of 37 successful fertilization due to haplodiploidy sex determination system in this insect, our results 38 indicate that Wolbachia promoted fertile sib mating in H. hebetor. Interestingly, the rate of adult 39 emergence in the progeny of Wolbachia-infected sib mates were almost similar to the non-sib 40 mate crosses and significantly more than those observed in the uninfected sib mate crosses. We 41 support the idea that Wolbachia modulate inbreeding avoidance and promote sib mating and also 42 mitigate inbreeding depression. The wasp Habrobracon hebetor siblings infected with 43 3 Wolbachia show higher rates of fertilization success and higher adult emergence rates compared 44 to the uninfected sib mates. By promoting successful sex with siblings and increasing the 45 probability of female progeny, Wolbachia enhance their transmission to the next generation and 46 also mitigate inbreeding depression. This is an undescribed effect of Wolbachia (symbiont) on 47 the host reproduction. 48 49

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“…Inbreeding depression can become evident in the offspring of only one generation inbreeding (Müller & Müller, ) or after several generations inbreeding (Bilde, Maklakov, & Schilling, ). Moreover, inbreeding can also influence traits not closely linked to fitness, such as the chemical (Menzel, Radke, & Foitzik, ) or behavioral phenotype of insects (Müller & Juškauskas, ; Pilakouta & Smiseth, ; Richardson & Smiseth, ).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, inbreeding can also influence traits not closely linked to fitness, such as the chemical (Menzel, Radke, & Foitzik, 2016) or behavioral phenotype of insects (Müller & Juškauskas, 2018;Pilakouta & Smiseth, 2017;Richardson & Smiseth, 2017).…”

mentioning

confidence: 99%

Lifetime inbreeding depression in a leaf beetle

Müller

Lamprecht

Schrieber

2018

Ecology and Evolution

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Ongoing habitat loss and fragmentation result in rapid population size reductions, which can increase the levels of inbreeding. Consequently, many species are threatened by inbreeding depression, a loss of individual fitness following the mating of close relatives. Here, we investigated inbreeding effects on fitness‐related traits throughout the lifetime of the mustard leaf beetle (Phaedon cochleariae) and mechanisms for the avoidance of inbreeding. Previously, we found that these beetles have family‐specific cuticular hydrocarbon profiles, which are likely not used as recognition cue for precopulatory inbreeding avoidance. Thus, we examined whether adult beetles show postcopulatory inbreeding avoidance instead. For this purpose, we determined the larval hatching rate of eggs laid by females mated sequentially with two nonsiblings, two siblings, a nonsibling, and a sibling or vice versa. The beetles suffered from inbreeding depression throughout their entire ontogeny, as evinced by a prolonged larval development, a decreased larval and adult survival and a decreased reproductive output of inbred compared to outbred individuals. The highest larval hatching rates were detected when females were mated with two nonsiblings or first with a sibling and second with a nonsibling. Significantly lower hatching rates were measured in the treatments with a sibling as second male. Thus, the results do not support the existence of postcopulatory inbreeding avoidance in P. cochleariae, but revealed evidence for second male sperm precedence. Consequently, an alternative strategy to avoid inbreeding costs might exist in this beetle, such as a polyandrous mating system, potentially coupled with a specific dispersal behavior.

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Female mating preferences for outbred versus inbred males are conditional upon the female's own inbreeding status

Cited by 18 publications

References 66 publications

Indirect fitness benefits through extra‐pair mating are large for an inbred minority, but cannot explain widespread infidelity among red‐winged fairy‐wrens

Indirect fitness benefits through extra‐pair mating are large for an inbred minority, but cannot explain widespread infidelity among red‐winged fairy‐wrens

Wolbachiapromote successful sex with siblings

Lifetime inbreeding depression in a leaf beetle

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