Microcerotermes crassus Snyder, 1934 大锯白蚁

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1. Queen replacement in the termite Microcerotermes papuanus

   Yves Roisin · 1990 · Entomologia Experimentalis et Applicata

   摘要

   In experimentally orphaned field nests of Microcerotermes papuanus Holmgren, 1911, large numbers of workers develop into replacement reproductives (ergatoids) in only one moult. The females become functional egg‐layers after approximately two months. Nymphs normally reach the last instars in August‐September; at that time, in the orphaned nests, some nymphs moult to nymphoid replacement reproductives. Over long time periods, these nymphoids completely replace the ergatoids and the females become physogastric. Although time‐efficient, queen replacement seems energetically expensive for the society, suggesting that this process is under weak selective pressure in M. papuanus, compared with sympatric species such as Nasutitermes princeps. Résumé Le remplacement de la reine chez le termite Microcerotermes papuanus Dans les nids de M. papuanus rendus expérimentalement orphelins, un grand nombre d'ouvriers se transforment, en une seule mue, en sexués de remplacement ergatoïdes. Les femelles se mettent à pondre au bout d'environ deux mois. Les nymphes atteignent normalement leurs derniers stades en août‐septembre. A ce moment, dans les nids orphelins, ccrtaines d'entre elles se différencient en sexués nymphoïdes. Dans les expériences de longue durée, ces nymphoïdes remplacent complètement les ergatoïdes et les femelles dcviennent physogastres. Bien que rapide, le remplacement de la reine paraît coûteux pour la société du fait du grand nombre d'individus, ouvriers el nymphes, impliqués. Ceci suggère que la pression de sélection sur ce phénomène est faible chez M. papuanus, par comparaison avec des espèces sympatriques telles que N. princeps.

2. 2. Microcerotermes sp. Typical nest structure

   Diedrich Visser · 2026 · Zenodo (CERN European Organization for Nuclear Research)

   摘要

   Microcerotermes sp. Typical nest structure. Infopage illustrating a nest structure as observed after lifting a stone. The image also illustrates the queen and a few workers.

3. Nest-mate recognition based on heritable odors in the termite Microcerotermes arboreus.

   Eldridge S. Adams · 1991 · Proceedings of the National Academy of Sciences

   摘要

   Workers of the Neotropical termite Microcerotermes arboreus distinguish nest mates from other conspecifics by odor. A controlled breeding experiment demonstrated a genetic component to variation in colony odors. Workers were less aggressive toward unfamiliar relatives than toward nonrelatives and distinguished degree of relatedness among unfamiliar workers. Unfamiliar relatives were attacked more often than nest mates, despite similar levels of genetic relatedness; thus, nest-mate recognition is not based solely upon heritable characteristics of individual workers. No difference was detected between the effects of cues inherited through the mother and cues inherited through the father.

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