Elpino-Campos Abner, Del-Claro Kleber, Prezoto Fábio
Programa de Pós-Graduação em Ciências Biológicas, Comportamento e Biologia Animal, Univ. Federal de Juiz de Fora, Juiz de Fora, MG, 36036-900.
Neotrop Entomol. 2007 Sep-Oct;36(5):685-92. doi: 10.1590/s1519-566x2007000500008.
Studies of species survey are important to know the available natural resources and to get useful information about the ecological characteristics of a specific area. There are not studies, on this issue, related to social wasps, in the Triângulo Mineiro region. The present study describes the diversity of species found in fragments of the cerrado region in Uberlândia, MG, and their temporal distribution. The field study was conducted from October 2003 to September 2004, and 43 samplings were carried out using active searching (24) and point sampling (19) methodologies. Twenty-nine species were found in 10 genera, Polybia and Polistes corresponding to 51.5% of the total listing. Mischocyttarus cerberus styx Richards represented 26.5% of the total individuals recorded by active searching and Agelaia pallipes (Olivier) corresponded to 57.6% by point sampling. Two species had their first record for the state of Minas Gerais: Polybia striata (Fabricius) and M. cerberus styx. The studied fragments presented a high level of diversity (H' = 0.66 to 1.16), a large number of rare species and a few common species. To collect the more common species the point sampling method was satisfactory while active searching was better to collect the rarer species. The active searching methodology was more efficient than point sampling, however some species could only be collected by point sampling. These factors showed that in order to carry out a wasp survey, a combination of different collection methodologies seems to be more appropriate.
物种调查研究对于了解可用的自然资源以及获取特定区域生态特征的有用信息非常重要。在米纳斯吉拉斯州的三角地区，尚未有关于社会性黄蜂这一问题的研究。本研究描述了在米纳斯吉拉斯州乌贝兰迪亚市塞拉多地区碎片中发现的物种多样性及其时间分布。实地研究于2003年10月至2004年9月进行，采用主动搜索法（24次）和点抽样法（19次）进行了43次采样。在10个属中发现了29个物种，其中多角胡蜂属和马蜂属占总记录的51.5%。主动搜索记录的总个体数中，冥河 Mischocyttarus cerberus styx Richards 占26.5%，点抽样记录的总个体数中，苍白阿氏胡蜂 Agelaia pallipes (Olivier) 占57.6%。有两个物种是米纳斯吉拉斯州的首次记录：条纹多角胡蜂 Polybia striata (Fabricius) 和冥河 Mischocyttarus cerberus styx。所研究的碎片呈现出高度的多样性（H' = 0.66至1.16），大量稀有物种和少数常见物种。为收集较常见的物种，点抽样方法令人满意，而主动搜索更适合收集较稀有的物种。主动搜索方法比点抽样更有效，但有些物种只能通过点抽样收集。这些因素表明，为了进行黄蜂调查，结合不同的收集方法似乎更为合适。
