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首页> 外文期刊>Insectes Sociaux: Bulletin de l'Union Internationale pour l'Etude des Insectes Sociaux >Demography and relatedness in multiple-foundress nests of the social sweat bee, Halictus ligatus
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Demography and relatedness in multiple-foundress nests of the social sweat bee, Halictus ligatus

机译：社会汗蜂Halictus ligatus多-巢中的人口统计学和相关性

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摘要

Female sweat bees in the species Halictus ligatus exhibit a wide range of reproductive roles, ranging from typically foundress or queen-like to typically worker-like. Nests are founded in spring and most are haplometrotic, that is. founded by a single foundress. A few (up to 12 %) are pleometrotic, founded by 2-6 foundresses. Variation in the proportion of multifoundress nests from year to year and from place to place suggests an adaptive basis for pleometrosis. We studied the demographic and social characteristics of 23 pleometrotic nests in an aggregation of 250-300 nests near Victoria, Ontario, in 1984, 1990, and 1991. In pleometrotic associations, dominant foundresses behaved in a manner typical of mid-summer, haplometrotic queens, while subordinates behaved like mid-summer workers. Dominant foundresses tended to be larger than subordinates. Pleometrotic nests were significantly more likely than haplometrotic nests to produce brood, and they also produced more workers. However, this early advantage did not result in the production of more reproductive brood per nest, nor did pleometrotic foundresses experience higher productivity per foundress than did haplometrotic foundresses. Relatively low relatedness among various categories of brood implied that subordinate foundresses were not closely related to dominants. We suggest that pleometrosis most likely results from accidental encounters between spring foundresses as they leave their hibernacula. Once formed, such associations confer a survival advantage on the nest as a whole, but do not result in greater reproductive brood productivity.
机译：Halictus ligatus物种中的雌性蜜蜂具有广泛的生殖作用，从典型的Foundress或Queen-like到通常的Worker-like。巢是在春季建立的，多数是单性的。由一位创始人创立。由2-6名创建者创立的组织中，有少数（多达12％）是多效的。一年又一年以及各地之间，多生巢的比例有所变化，这提示了一种可行的骨质增生方法。我们分别于1984、1990和1991年在安大略省维多利亚附近的250-300个巢中研究了23个多虫巢的人口统计和社会特征。在多虫协会中，主要代言人的行为方式类似于仲夏，单节女王/王后，而下属的行为就像仲夏工人。统治者的统治者往往比下属更大。远洋巢比单身巢产卵的可能性要高得多，而且它们也产生了更多的工人。但是，这种早期的优势并没有导致每个巢产生更多的繁殖育种，并且与单倍生殖的繁殖者相比，多营养的繁殖者的每个生产力也没有更高的生产率。各个类别的亲戚之间的相关性相对较低，这意味着下属的创立者与统治者之间并不紧密相关。我们建议，由于春季女皇离开冬眠时，她们之间偶然的相遇，导致了全民化。一旦形成，这样的关联就可以在整个巢上赋予生存优势，但不会导致更高的繁殖亲代生产力。

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