Genetic variability in captive populations of the stingless bee Tetragonisca angustula

详细信息    查看全文

• 作者：Leandro R. Santiago ; Flávio O. Francisco ; Rodolfo Jaffé ; Maria C. Arias
• 刊名：Genetica
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：144
• 期：4
• 页码：397-405
• 全文大小：639 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Life Sciences
  Animal Genetics and Genomics
  Plant Genetics and Genomics
  Human Genetics
  Microbial Genetics and Genomics
  
• 出版者：Springer Netherlands
• ISSN：1573-6857
• 卷排序：144

文摘

Low genetic variability has normally been considered a consequence of animal husbandry and a major contributing factor to declining bee populations. Here, we performed a molecular analysis of captive and wild populations of the stingless bee Tetragonisca angustula, one of the most commonly kept species across South America. Microsatellite analyses showed similar genetic variability between wild and captive populations However, captive populations showed lower mitochondrial genetic variability. Male-mediated gene flow, transport and division of nests are suggested as the most probable explanations for the observed patterns of genetic structure. We conclude that increasing the number of colonies kept through nest divisions does not negatively affect nuclear genetic variability, which seems to be maintained by small-scale male dispersal and human-mediated nest transport. However, the transport of nests from distant localities should be practiced with caution given the high genetic differentiation observed between samples from western and eastern areas. The high genetic structure verified is the result of a long-term evolutionary process, and bees from distant localities may represent unique evolutionary lineages.KeywordsGenetic variabilityTetragonisca angustulaCaptive populationsMolecular markers