Large-scale distribution of hybridogenetic lineages in a Spanish desert ant

Darras, Hugo; Leniaud, Laurianne; Aron, Serge

doi:10.1098/rspb.2013.2396

Cited by 27 publications

(65 citation statements)

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“…Whereas the species consists of two highly divergent nuclear lineages that co-occur as a complementary pair in all populations [1], there is no clustering of mtDNA variants into the two lineages. Rather, mitochondrial haplotypes of reproductive individuals of both sexes cluster according to their geographical origin, independently of their nuclear lineage (figure 2b).…”

Section: Discussionmentioning

confidence: 99%

“…Neither of these two explanations may account for the pattern of mtDNA found in this study, which is characterized by both a strong geographical structure and unsorted variations among lineages. In the absence of gene flow, mitochondrial genomes from the two lineages are expected to accumulate significant genetic differences, especially since lineages have diverged from each other a long time ago [1].…”

Section: Discussionmentioning

confidence: 99%

“…To determine how mtDNA is partitioned within and between the two lineages, we sequenced a fragment of mitochondrial cox1 gene from 23 reproductive individuals collected in 14 localities across the entire range of the species (figure 2a). These samples are a subset of those from a previous study by Darras et al [1], which explored the phylogeographic structure of the species and showed that the two lineages carry highly divergent genotypes at 12 microsatellite markers. We selected nine individuals from the first genetic lineage His1 and 14 from the alternative lineage His2 (figure 2b).…”

Section: Materials and Methods (A) Samples And Sequencingmentioning

confidence: 99%

“…Two divergent genetic lineages co-occur as a complementary pair in all populations across the whole distribution range of the species [1,2]. Queens typically mate with a male originating from the alternative lineage and use its sperm to produce F 1 hybrid workers (figure 1).…”

Section: Introductionmentioning

confidence: 99%

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Introgression of mitochondrial DNA among lineages in a hybridogenetic ant

Darras

Aron

2015

Biol. Lett.

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We report a remarkable pattern of incongruence between nuclear and mitochondrial variations in a social insect, the desert ant Cataglyphis hispanica. This species reproduces by social hybridogenesis. In all populations, two distinct genetic lineages coexist; non-reproductive workers develop from hybrid crosses between the lineages, whereas reproductive offspring (males and new queens) are typically produced asexually by parthenogenesis. Genetic analyses based on nuclear markers revealed that the two lineages remain highly differentiated despite constant hybridization for worker production. Here, we show that, in contrast with nuclear DNA, mitochondrial DNA (mtDNA) does not recover the two lineages as monophyletic. Rather, mitochondrial haplotypes cluster according to their geographical origin. We argue that this cytonuclear incongruence stems from introgression of mtDNA among lineages, and review the mechanisms likely to explain this pattern under social hybridogenesis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Materials and Methods (A) Samples And Sequencingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Introgression of mitochondrial DNA among lineages in a hybridogenetic ant

Darras

Aron

2015

Biol. Lett.

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“…Genomic DNA genotyping-Genotypes of ants were determined at 9 microsatellite loci: four loci previously described for C. cursor (Cc11, Cc51, Cc54, Cc99; Pearcy et al, 2004b), three for C. hispanica (Ch01, Ch11, Ch12; Darras et al, 2014), and two new markers developed for C. niger (Cn04, Cn08). PCR were performed with a MJ Research PTC-200 thermocycler.…”

Section: Genetic Analysesmentioning

confidence: 99%

At the brink of supercoloniality: genetic, behavioral, and chemical assessments of population structure of the desert ant Cataglyphis niger

et al. 2014

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† These authors have contributed equally to this work.The nesting habits of ants play an important role in structuring ant populations. They vary from monodomy, a colony occupies a single nest, via polydomy, a colony occupies multiple adjacent nests, to supercoloniality, a colony spans over large territories comprising dozen to thousands nests without having any boundaries. The population structure of the desert ant Cataglyphis niger, previously considered to form supercolonies, was studied using genetic, chemical, and behavioral tools in plots of 50 × 50 m at two distinct populations. At the Palmahim site, the plot comprised 15 nests that according to the genetic analysis constituted three colonies. Likewise at the Rishon Leziyyon site 14 nests constituted 5 genetic colonies. In both sites, both chemical analysis and the behavioral (aggression) tests confirmed the colony genetic architecture. The behavioral tests also revealed that aggression between colonies within a population was higher than that exhibited between colonies of different populations, suggesting the occurrence of the "nasty neighbor" phenomenon. In contrast to supercolony structure previously reported in another population of this species, the presently studied populations were composed of polydomous colonies. However, both the genetic and chemical data revealed that the inter-colonial differences between sites were larger than those within site, suggesting some within-site population viscosity. Thus, C. niger exhibits flexible nesting characteristics, from polydomy to supercoloniality, and can be considered at the brink of supercoloniality. We attribute the differences in population structure among sites to the intensity of intraspecific competition.

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Determining social and population structures requires multiple approaches: A case study of the desert antCataglyphis israelensis

Brodetzki

Hefetz

2018

Ecology and Evolution

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The remarkable diversity of ant social organization is reflected in both their life history and population kin structure. Different species demonstrate a high variation with respect to both social structure and mating strategies: from the ancestral colony type that is composed of a single queen (monogyny), singly inseminated (monoandry), to the more derived states of colonies headed by a multiply inseminated queen (polyandry), to colonies composed of multiple queens (polygyny) that are either singly or multiply inseminated. Moreover, the population structure of an ant species can range from multicoloniality to polydomy to supercoloniality, and Cataglyphis is considered to be a model genus in regard to such diversity. The present study sought to determine the social and population structure of the recently described C. israelensis species in Israel. For this purpose we employed a multidisciplinary approach, rather than the commonly used single approach that is mostly based on genetics. Our study encompassed behavior (nest insularity/openness), chemistry (composition of nestmate recognition signals and cuticular hydrocarbons), and genetics (microsatellite polymorphism). Each approach has been shown to possess both advantages and disadvantages, depending on the studied species. Our findings reveal that C. israelensis colonies are headed by a single, multiply inseminated queen and that the population structure is polydomous, with each colony comprising one main nest and several additional satellite nests. Moreover, our findings demonstrate that none of the above‐noted approaches, when employed individually, is suitable or sufficient in itself for delineating population structure, thus emphasizing the importance of using multiple approaches when assessing such complex systems.

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Large-scale distribution of hybridogenetic lineages in a Spanish desert ant

Cited by 27 publications

References 50 publications

Introgression of mitochondrial DNA among lineages in a hybridogenetic ant

Introgression of mitochondrial DNA among lineages in a hybridogenetic ant

At the brink of supercoloniality: genetic, behavioral, and chemical assessments of population structure of the desert ant Cataglyphis niger

Determining social and population structures requires multiple approaches: A case study of the desert antCataglyphis israelensis

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