ArticleJournal of experimental zoology. Part B, Molecular and developmental evolution2025
Embryogenesis in Myrmicine Ants Combines Features of Short Germ-Band Development With a Progressive Mode of Segmentation.
Article in Journal of experimental zoology. Part B, Molecular and developmental evolution, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Progressive Cellularization of Blastoderm and Extraembryonic Tissue Formation in the Ant Camponotus floridanus.Journal of experimental zoology. Part B, Molecular and developmental evolution · 2026Article
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6 authors.
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Abstract
Ants exhibit complex social organization, morphologically and functionally distinct castes, and the exploitation of diverse ecological niches. How these features have influenced embryonic development relative to other insects remains unclear. Insect embryogenesis has been classified into three modes: In long germ-band development, exemplified by the fruit fly Drosophila melanogaster, segments along the entire anterior-posterior axis of the embryonic primordium are established almost simultaneously, before gastrulation, with the initial embryonic primordium surrounding almost the entire volume of the egg. In short and intermediate germ-band modes, the embryonic primordium occupies a smaller proportion of the egg surface, with anterior segments initially specified, and remaining segments being added sequentially from a posterior growth zone. Here, we examine embryogenesis in three myrmicine ants, the fungus-gardening ants Atta texana and Mycocepurus smithii, and the red imported fire ant Solenopsis invicta. We find that these ant embryos combine features of short germ-band development with a newly characterized progressive pattern of segmentation that has been associated with some long germ-band-developing insects. Despite similarities in the size of ant and Drosophila eggs, embryogenesis in the three ant species is 10- to 20-fold longer than in Drosophila and is also significantly longer than in two other hymenopteran species that have been studied, the honeybee Apis mellifera and the jewel wasp Nasonia vitripennis. Moreover, the embryos produced by A. texana foundress queens develop to first instar larvae 25% faster than embryos produced by mature queens. We discuss these results in the context of the eusocial lifestyle of ants.
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