Population structure and mating biology of the polygynous ponerine ant Gnamptogenys striatula in Brazil
Population structure and mating biology of the polygynous ponerine ant Gnamptogenys striatula in Brazil
复制标题
DOI：
10.1046/j.1365-294x.2000.01085.x
复制
发表时间：
2000-11-01
影响因子：
4.9
通讯作者：
Jaisson, P
中科院分区：
文献类型：
--
作者：
Giraud, T;Blatrix, R;Jaisson, P
Gnamptogenys striatula 是一种一夫多妻制的蚂蚁，其蚁群中包含多个分化的蚁后或多个玩家门。对巴西东北部种群的种群结构、蜂王交配频率和随机交配偏差进行了调查。使用八个可变微卫星标记对来自 33 个皇后右翼群体和 17 个皇后及其后代（20-40 个后代）的每个的 8 名工蜂进行了基因分型。种群分化测试表明目前在几公里范围内基因有限，而距离隔离测试则揭示了几米范围内的种群粘性。这种种群结构，加上在野外观察到的频繁的群体迁移和分裂，表明纹状螈是通过出芽建立新的巢穴的。遗传数据显示，我们的 17 只蜂王中有 13 只是单交，四只是双交。群体中双交蚁后最大频率的估计范围为0.232-0.259，表明条纹斑鳀的交配频率较低。 17 只蜂后与其配偶之间的低估计平均相关性 (-0.04 +/- 0.49) 表明没有证据表明 G, striatula 存在近亲繁殖。
Gnamptogenys striatula is a polygynous ponerine ant, whose colonies contain either several differentiated queens or several gamergates. Population structure, queen mating frequency and deviation from random mating were investigated in a north-eastern Brazilian population. Eight workers from each of 33 queenright colonies and 17 queens and their progeny (20-40 offspring) were genotyped using eight variable microsatellite markers. Population differentiation tests indicated limited gene now at the scale of several kilometres, and tests of isolation by distance revealed population viscosity at the scale of a few metres. This population structure, together with the frequent colony migrations and fissions observed in the field, suggest that new nests are founded by budding in G. striatula. Genetic data showed that 13 of our 17 queens were single-mated and four were double-mated. The estimation of the range of maximal frequency of double-mated queens in the population was 0.232-0.259, demonstrating that mating frequency is low in G. striatula. The low estimated mean relatedness between the 17 queens and their mates (-0.04 +/- 0.49) indicated no evidence of inbreeding in G, striatula.