id:"swepub:oai:gup.ub.gu.se/213645"
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- Fountain, T. (author)
Outbreeding effects in an inbreeding insect, Cimex lectularius
- Article/chapterEnglish2015
Publisher, publication year, extent ...
- 2014-12-28
- Wiley,2015
Numbers
- LIBRIS-ID:oai:gup.ub.gu.se/213645
- https://gup.ub.gu.se/publication/213645URI
- https://doi.org/10.1002/ece3.1373DOI
Supplementary language notes
- Language:English
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- SwePubSwePub
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Notes
- In some species, populations with few founding individuals can be resilient to extreme inbreeding. Inbreeding seems to be the norm in the common bed bug, Cimex lectularius, a flightless insect that, nevertheless, can reach large deme sizes and persist successfully. However, bed bugs can also be dispersed passively by humans, exposing inbred populations to gene flow from genetically distant populations. The introduction of genetic variation through this outbreeding could lead to increased fitness (heterosis) or be costly by causing a loss of local adaptation or exposing genetic incompatibility between populations (outbreeding depression). Here, we addressed how inbreeding within demes and outbreeding between distant populations impact fitness over two generations in this re-emerging public health pest. We compared fitness traits of families that were inbred (mimicking reproduction following a founder event) or outbred (mimicking reproduction following a gene flow event). We found that outbreeding led to increased starvation resistance compared to inbred families, but this benefit was lost after two generations of outbreeding. No other fitness benefits of outbreeding were observed in either generation, including no differences in fecundity between the two treatments. Resilience to inbreeding is likely to result from the history of small founder events in the bed bug. Outbreeding benefits may only be detectable under stress and when heterozygosity is maximized without disruption of coadaptation. We discuss the consequences of these results both in terms of inbreeding and outbreeding in populations with genetic and spatial structuring, as well as for the recent resurgence of bed bug populations.
Subject headings and genre
- NATURVETENSKAP Biologi Ekologi hsv//swe
- NATURAL SCIENCES Biological Sciences Ecology hsv//eng
- Cimex lectularius
- colonization
- inbreeding
- metapopulation dynamics
- outbreeding depression
- GENETIC LOAD
- BED BUG
- POPULATION DIFFERENTIATION
- METAPOPULATION
- DYNAMICS
- DELETERIOUS MUTATIONS
- MATING SYSTEM
- SOCIAL SPIDER
- DEPRESSION
- HETEROSIS
- CONSEQUENCES
- Ecology
Added entries (persons, corporate bodies, meetings, titles ...)
- Butlin, Roger,1955Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory(Swepub:gu)xbutro (author)
- Reinhardt, K. (author)
- Otti, O. (author)
- Göteborgs universitetInstitutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium (creator_code:org_t)
Related titles
- In:Ecology and Evolution: Wiley5:2, s. 409-4182045-7758
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