Outbreeding and inbreeding depression dynamics in the haplodiploid date stone beetle, Coccotrypes dactyliperda

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F25%3A00638546" target="_blank" >RIV/61388971:_____/25:00638546 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.schweizerbart.de/papers/entomologia/detail/45/107113/Outbreeding_and_inbreeding_depression_dynamics_in_?af=crossref" target="_blank" >https://www.schweizerbart.de/papers/entomologia/detail/45/107113/Outbreeding_and_inbreeding_depression_dynamics_in_?af=crossref</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1127/entomologia/3261" target="_blank" >10.1127/entomologia/3261</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Outbreeding and inbreeding depression dynamics in the haplodiploid date stone beetle, Coccotrypes dactyliperda

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Outbreeding and inbreeding depression dynamics in the haplodiploid date stone beetle, Coccotrypes dactyliperda

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10606 - Microbiology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Entomologia Generalis

ISSN

0171-8177

e-ISSN

2363-7102

Svazek periodika

45

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

775-785

Kód UT WoS článku

001532560000001

EID výsledku v databázi Scopus

2-s2.0-105015559384