Spatial patterns of relatedness within nesting aggregations of the primitively eusocial sweat bee Lasioglossum malachurum

Friedel, Anna; Paxton, Robert J.; Soro, Antonella

doi:10.1007/s00040-017-0559-6

Cited by 6 publications

(5 citation statements)

References 61 publications

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“…We should expect a negative correlation between both body size and sociality level with the differentiation between bee populations [30]. Our results showed that L. malachurum, a smallsized social species, had the lowest differentiation values, which corroborates previous results by other authors [58]. This result seems to support the role of sociality in differentiation level, but is contradictory to the role of body size, since small-sized bees tend to have higher differentiation values than larger ones, due to body size affecting their dispersion capacity [30].…”

Section: Discussionsupporting

confidence: 92%

Genomic Patterns of Iberian Wild Bees Reveal Levels of Diversity, Differentiation and Population Structure, Supporting the “Refugia within Refugia” Hypothesis

et al. 2023

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We used a population genomic approach to unravel the population structure, genetic differentiation, and genetic diversity of three widespread wild bee species across the Iberian Peninsula, Andrena agilissima, Andrena flavipes and Lasioglossum malachurum. Our results demonstrated that genetic lineages in the Ebro River valley or near the Pyrenees mountains are different from the rest of Iberia. This relatively congruent pattern across species once more supports the hypothesis of “refugia within refugia” in the Iberian Peninsula. The results for A. flavipes and A. agilissima showed an unexpected pattern of genetic differentiation, with the generalist polylectic A. flavipes having lower levels of genetic diversity (Ho = 0.0807, He = 0.2883) and higher differentiation (FST = 0.5611), while the specialist oligolectic A. agilissima had higher genetic diversity (Ho = 0.2104, He = 0.3282) and lower differentiation values (FST = 0.0957). For L. malachurum, the smallest and the only social species showed the lowest inbreeding coefficient (FIS = 0.1009) and the lowest differentiation level (FST = 0.0663). Overall, our results, suggest that this pattern of population structure and genetic diversity could be explained by the combined role of past climate changes and the life-history traits of the species (i.e., size, sociality and host-plant specialization), supporting the role of the Iberian refugia as a biodiversity hotspot.

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Section: Discussionsupporting

confidence: 92%

Genomic Patterns of Iberian Wild Bees Reveal Levels of Diversity, Differentiation and Population Structure, Supporting the “Refugia within Refugia” Hypothesis

et al. 2023

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“…Social nesting in this species is thought to be reinforced by the limited dispersal of females from natal nests (Rehan et al, 2014). Dispersal patterns have been implicated in structuring social systems in halictid sweat bees by increasing the densities of philopatric females and varying levels of drifting between nests (Kukuk & Decelles, 1986;Yanega, 1990;Ulrich et al, 2009;Johnstone, Cant & Field, 2012;Friedel, Paxton & Soro, 2017). As such, assessing the phylogeography and population genetics of C. australensis can improve our understanding of both the historical biogeography and the sociobiology of facultatively social insects.…”

Section: Introductionmentioning

confidence: 99%

Phylogeography and population genetics of the Australian small carpenter bee, Ceratina australensis

Oppenheimer

Shell

Rehan

2018

Biological Journal of the Linnean Society

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The Australian small carpenter bee, Ceratina australensis, is the sole member of the small carpenter bees, genus Ceratina, in Australia. Ceratina australensis is found throughout eastern Australia in dead, broken stems of weedy plant species, where it makes its nests. Here we developed eight microsatellite loci and used these markers to characterize the genetic structure of three populations across three distinct ecoregions that are connected by the Murray-Darling River basin. We genotyped 57 female bees and found significant and geographically consistent variation in allelic diversity and heterozygosity between populations. Through comparisons with the results of mitochondrial DNA screening from a previous study, we infer the possibilities of male-biased dispersal and limited interpopulation migration. Based on available distribution data, the expansion of C. australensis into arid regions appears to follow the Murray-Darling River basin and associated waterways. This basin has undergone severe anthropogenic disturbance since European settlement of Australia, with large-scale changes to native vegetation communities. Although it is unknown how these changes have affected local insect communities, C. australensis does not rely on a single plant species for nesting habitat. We provide evidence for the hypothesis that expansion of C. australensis into Australia might have been aided by the introduction of non-native pithy stemmed plants.

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“…Spatial autocorrelation analyses were undertaken at the aggregation and the site level in GenAlEx 6.52 using 999 permutations and 1000 bootstraps [49]. This method has been used to assess spatial structure of relatives in other co-operative species [16,17,28]. It is powerful in that it does not assume a simple linear relationship between relatedness and distance, and as such can uncover discrete clusters of related individuals located anywhere in the parameter space.…”

Section: Methodsmentioning

confidence: 99%

“…Altruistic and philopatric tendencies may be in a positive feedback loop with increased inclusive fitness benefits due to altruism leading to increased philopatry and vice-versa [12]. This correlation between fine-scale population structure and cooperative tendency has been demonstrated in several species of mammal [13,14], bird [15] and insect [16,17].…”

Section: Introductionmentioning

confidence: 99%

Partner choice correlates with fine scale kin structuring in the paper wasp Polistes dominula

2019

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Cooperation among kin is common in animal societies. Kin groups may form by individuals directly discriminating relatives based on kin recognition cues, or form passively through natal philopatry and limited dispersal. We describe the genetic landscape for a primitively eusocial wasp, Polistes dominula , and ask whether individuals choose cooperative partners that are nearby and/or that are genetic relatives. Firstly, we genotyped an entire sub-population of 1361 wasps and found genetic structuring on an extremely fine scale: the probability of finding genetic relatives decreases exponentially within just a few meters of an individual’s nest. At the same time, however, we found a lack of genetic structuring between natural nest aggregations within the population. Secondly, in a separate dataset where ~2000 wasps were genotyped, we show that wasps forced experimentally to make a new nest choice tended to choose new nests near to their original nests, and that these nests tended to contain some full sisters. However, a significant fraction of wasps chose nests that did not contain sisters, despite sisters being present in nearby nests. Although we cannot rule out a role for direct kin recognition or natal nest-mate recognition, our data suggest that kin groups may form via a philopatric rule-of-thumb, whereby wasps simply select groups and nesting sites that are nearby. The result is that most subordinate helpers obtain indirect fitness benefits by breeding cooperatively.

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Spatial patterns of relatedness within nesting aggregations of the primitively eusocial sweat bee Lasioglossum malachurum

Cited by 6 publications

References 61 publications

Genomic Patterns of Iberian Wild Bees Reveal Levels of Diversity, Differentiation and Population Structure, Supporting the “Refugia within Refugia” Hypothesis

Genomic Patterns of Iberian Wild Bees Reveal Levels of Diversity, Differentiation and Population Structure, Supporting the “Refugia within Refugia” Hypothesis

Phylogeography and population genetics of the Australian small carpenter bee, Ceratina australensis

Partner choice correlates with fine scale kin structuring in the paper wasp Polistes dominula

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