Complex sociogenetic organization and reproductive skew in a primitively eusocial sweat bee, Lasioglossum malachurum, as revealed by microsatellites
Complex sociogenetic organization and reproductive skew in a primitively eusocial sweat bee, Lasioglossum malachurum, as revealed by microsatellites
复制标题
微卫星揭示了原始社会性汗蜂 Lasioglossum malachurum 的复杂社会遗传组织和生殖偏差
作者：
R. Paxton;M. Ayasse;J. Field;A. Soro
汗蜂（汗蜂科）是一个社会多样化的分类单元，其中群居性已经独立出现了许多次。专性的，原始群居的Lasioglossum malachurum，广泛分布于整个欧洲，被认为是halicides中社会性的顶峰。一只蚁后领导一群较小的雌性工蜂，到仲夏时，这些工蜂会产生新的雄性工蜂（雄性和雌性），其中只有交配的雌性工蜂越冬，在第二年春天建立新的工蜂群。我们在蚁群周期的工蜂和雌蜂生产阶段成功挖掘了18个巢穴，并使用专为该物种开发的高度可变的微卫星位点分析了每个巢穴的蚁后、所有工蜂或所有雌蜂。从我们的分析中得出了三个要点。首先，蜂王是兼性多夫制（蜂王有效交配频率：范围1-3，谐波平均值1.13）。其次，蚁后可能会领导包含不相关个体的群体（18个巢穴中有6个），这很可能是在工蜂出现之前，在群体周期的早期阶段篡夺群体的结果。第三，非蚁后的工蜂可能会在蚁后面前产下受精卵，这些受精卵会成功发育成雌性，而蚁后自己的工蜂则不会，这与所谓的生殖倾斜的“让步”模型相一致。
The sweat bees (Family Halictidae) are a socially diverse taxon in which eusociality has arisen independently numerous times. The obligate, primitively eusocial Lasioglossum malachurum, distributed widely throughout Europe, has been considered the zenith of sociality within halictids. A single queen heads a colony of smaller daughter workers which, by mid‐summer, produce new sexuals (males and gynes), of which only the mated gynes overwinter to found new colonies the following spring. We excavated successfully 18 nests during the worker‐ and gyne‐producing phases of the colony cycle and analysed each nest's queen and either all workers or all gynes using highly variable microsatellite loci developed specifically for this species. Three important points arise from our analyses. First, queens are facultatively polyandrous (queen effective mating frequency: range 1–3, harmonic mean 1.13). Second, queens may head colonies containing unrelated individuals (n= 6 of 18 nests), most probably a consequence of colony usurpation during the early phase of the colony cycle before worker emergence. Third, nonqueen's workers may, but the queen's own workers do not, lay fertilized eggs in the presence of the queen that successfully develop into gynes, in agreement with so‐called ‘concession’ models of reproductive skew.
蜜蜂亲子冲突的 DNA 指纹分析。
DOI：
10.1073/pnas.91.11.5143
发表时间：
1994
影响因子：
11.1
作者：
Mueller,UG;Eickwort,GC;Aquadro,CF
通讯作者：
Aquadro,CF