| Outbreeding and inbreeding depression dynamics in the haplodiploid date stone beetle, Coccotrypes dactyliperda | |
Dong, Yiyi ; Johnson, Andrew J.; Gao, Jie1; Kerdelhue, Carole2; Saune, Laure2; Mendel, Zvi3; Veselska, Tereza4; McDaniel, Stuart F.; Hulcr, Jiri
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| 2025 | |
| Source Publication | ENTOMOLOGIA GENERALIS
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| ISSN | 0171-8177 |
| Volume | 45Issue:3Pages:775-785 |
| Abstract | The mating system strongly influences genetic variation, reproductive isolation, speciation, and invasiveness. In haplodiploid species, inbreeding is expected to produce high homozygosity and purge deleterious mutations, potentially reducing inbreeding depression but increasing outbreeding depression at shallow genetic distances. In bark, ambrosia, and seed beetles (Scolytinae), haplodiploidy and inbreeding have been linked to small population persistence and invasiveness. However, observed heterozygosity and outbreeding in natural populations challenge these assumptions. To examine the relationship between genetic distance and fitness, we established F4 inbred lines of the date stone beetle, Coccotrypes dactyliperda, from populations in Israel and the United States. Genetic distances were estimated using mitochondrial genes and nuclear markers, and 814 experimental crosses were conducted to assess fecundity and hatch rates. Contrary to previous reports, we observed both inbreeding and outbreeding depression, especially in sibling matings and in extremely distant crosses. A non-linear model revealed reduced fitness at both ends of the relatedness spectrum, with highest fecundity at intermediate distances. Mitochondrial lineages showed the strongest inbreeding depression, although lineage assignments varied between mitochondrial and nuclear markers. Our results emphasize the importance of quantifying genetic distance continuously rather than categorically. The discordance between mitochondrial and nuclear markers suggests that incompatibility may involve unmeasured loci. These findings highlight the complexity of genetic structure and the need for further studies on the fitness consequences of genetic distance in haplodiploid species. |
| Keyword | bark beetle crossing distance haplodiploid inbreeding depression invasive species outbreeding depression |
| Subject Area | Entomology |
| DOI | 10.1127/entomologia/3261 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001532560000001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/15614 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Univ Florida, Sch Forest Fisheries & Geomat Sci, Gainesville, FL 32603 USA 2.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 3.Univ Montpellier, CBGP, INRAE, CIRAD,IRD,Inst Agro, 755 Ave Campus Agropolis,CS30016, F-34988 Montferrier Sur Lez, France 4.Agr Res Org, Volcani Inst, Plant Protect Inst, IL-7505101 Rishon Leziyyon, Israel 5.Czech Acad Sci, Inst Microbiol, Prague 14220, Czech Republic 6.McDaniel, Stuart F.] Univ Florida, Dept Biol, Gainesville, FL 32611 USA |
| Recommended Citation GB/T 7714 | Dong, Yiyi,Johnson, Andrew J.,Gao, Jie,et al. Outbreeding and inbreeding depression dynamics in the haplodiploid date stone beetle, Coccotrypes dactyliperda[J]. ENTOMOLOGIA GENERALIS,2025,45(3):775-785. |
| APA | Dong, Yiyi.,Johnson, Andrew J..,Gao, Jie.,Kerdelhue, Carole.,Saune, Laure.,...&Hulcr, Jiri.(2025).Outbreeding and inbreeding depression dynamics in the haplodiploid date stone beetle, Coccotrypes dactyliperda.ENTOMOLOGIA GENERALIS,45(3),775-785. |
| MLA | Dong, Yiyi,et al."Outbreeding and inbreeding depression dynamics in the haplodiploid date stone beetle, Coccotrypes dactyliperda".ENTOMOLOGIA GENERALIS 45.3(2025):775-785. |
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