Fertile diploid males in the ant Cataglyphis cursor: a potential cost of thelytoky?

  title={Fertile diploid males in the ant Cataglyphis cursor: a potential cost of thelytoky?},
  author={Claudie Doums and Camille Ruel and Johanna Cl{\'e}mencet and Pierre F{\'e}d{\'e}rici and Laurent Cournault and Serge Aron},
  journal={Behavioral Ecology and Sociobiology},
Under the hymenopteran single-locus complementary sex-determination system, production of diploid males results from homozygosity at the sex-determiner locus. This arises when both parents transmit identical alleles at the locus to the offspring. In species reproducing asexually through thelytokous parthenogenesis, production of diploid males may also occur when the sex locus undergoes recombination and becomes homozygous in the offspring. Diploid males represent a substantial genetic load in… 

Asexual male production by ZW recombination in Artemia parthenogenetica

Test the hypothesis that rare, asexually produced males of the crustacean Artemia parthenogenetica are produced by recombination between the Z and W sex chromosomes during non-clonal parthenogenesis, resulting in ZZ males through loss of heterozygosity at the sex determination locus, and uses RAD-sequencing to compare asexual mothers with their male and female offspring.

Population structure and sociogenetic organisation in a species with ergatoid queens, the desert ant Ocymyrmex robustior

The results show that the study population is genetically structured, consistent with dependent colony foundation, and genetic analyses show that male offspring in queenright nests are all queen-produced, suggesting worker policing and/or trophic egg laying.

First Evidence of Inclusive Sexual Selection in the Ant Cataglyphis cursor: Worker Aggressions Differentially Affect Male Access to Virgin Queens

It is shown that workers could potentially change male mating success by disfavouring heavier males, as relatively heavy males attempted to mate more often than lighter males in the absence of worker whereas the reverse occurred in the presence of workers.

Worker ants promote outbreeding by transporting young queens to alien nests

Ass outbreeding and indirect female choice in the ant C. elegans are comparable to human matchmaking and suggest a hitherto unknown aspect of natural history – third party sexual selection.

High inter-colonial variation in worker nestmate relatedness and diverse social structure in a desert ant from Mongolia

Although the sociogenetic organisation of this species could not be completely resolved, it is clear that there is a sharp contrast between C. aenescens and its closest congener, C. cursor, which underlines the variability of various life-history traits exhibited within the group.

Frequent colony orphaning triggers the production of replacement queens via worker thelytoky in a desert-dwelling ant

In the field, in the late spring, C. floricola colonies were more likely to be orphaned than were C. tartessica colonies, probably due to differences in how they performed fission, their colony foundation system.

Chemical Characterization of Young Virgin Queens and Mated Egg-Laying Queens in the Ant Cataglyphis cursor: Random Forest Classification Analysis for Multivariate Datasets

In the thermophilic and thelytokous ant, Cataglyphis cursor, the cuticular hydrocarbon profiles and Dufour’s gland contents of queens of different age and reproductive status and of workers are analyzed, opening novel opportunities for experimental studies of inclusive mate choice and queen choice.

Insights into the biodiversity of the Succulent Karoo hotspot of South Africa: the population genetics of a rare and endemic halictid bee, Patellapis doleritica

Investigation of Patellapis doleritica's mating and population genetic structure in 258 individuals from 7 populations spanning most of its known range revealed modest but significant differentiation between most populations, even across the very limited range of the species.



Diploid males and their triploid offspring in the paper wasp Polistes dominulus

Evidence that both diploid males and triploid females remain undetected throughout the colony cycle is presented, which is particularly relevant for introduced populations with few alleles at the sex-determining locus but cannot be ignored in native populations without supporting genetic data.

Single locus complementary sex determination in Hymenoptera: an "unintelligent" design?

Behavioural adaptations to avoid matings between relatives include active dispersal from natal patches and mating preferences for non-relatives, and a number of hypothetical adaptations to sl-CSD which should be considered in future studies of this insect order.

Diploid males, diploid sperm production, and triploid females in the ant Tapinoma erraticum

Variations in the frequency of triploids among female castes are shown: Triploid females are more frequent among workers than virgin queens; they are absent among mated, reproductive queens.

Multiple mating in the ant Cataglyphis cursor: testing the sperm limitation and the diploid male load hypotheses

It is suggested that the ‘sperm limitation’ and the ’diploid male load’ hypotheses are unlikely to account for the queen mating frequency reported in this ant.

Diploid male production — a significant colony mortality factor in the fire ant Solenopsis invicta (Hymenoptera: Formicidae)

The results suggest that the observed distribution of male diploidsy in S. invicta can be explained by differential mortality of diploid male producing colonies of the two forms, with such colonies ofThe monogyne form experiencing 100% mortality early in development.

Meiotic recombination dramatically decreased in thelytokous queens of the little fire ant and their sexually produced workers.

It is suggested that the combination of automixis with central fusion and a major decrease in recombination rates allows clonal queens to benefit from thelytoky while avoiding the potential inbreeding depression resulting from the loss of heterozygosity during Automixis.

Facultative use of thelytokous parthenogenesis for queen production in the polyandrous ant Cataglyphis cursor

It is shown that the queen can also produce gynes sexually and may do so to offset the costs of asexual reproduction, andSimulations of gynes inbreeding level following one to ten generations of automictic thelytoky suggest that the queens switches between or combines thelyToky and sex, which may reduce the costsof inbreeding.

A review of the consequences of complementary sex determination and diploid male production on mating failures in the Hymenoptera

The data at hand suggest that diploid male production can substantially increase mating failures in small populations of economically and ecologically important hymenopterans.

Impacts of inbreeding on bumblebee colony fitness under field conditions

It is suggested that diploid males may act as indicators of the genetic health of populations, and that their detection could be used as an informative tool in hymenopteran conservation.

Diploid males and colony-level selection in Formica ants

Models of the load hypothesis suggest that slow growth and high mortality of colonies with diploid males favour single mating by queens, and the longer the period of slow colony growth and the heavier the mortality, the stronger is the selection for monandry.