Differentiating between gynes and workers in the invasive hornet Vespa velutina (Hymenoptera, Vespidae) in Europe
| Autor: | Eric Darrouzet, Izaskun Pérez-de-Heredia, Arturo Goldarazena, Juan Carlos Iturrondobeitia, Pedro Romón |
|---|---|
| Přispěvatelé: | Institut de recherche sur la biologie de l'insecte UMR7261 (IRBI), Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Tours-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Insecta Arthropoda [SDV]Life Sciences [q-bio] caste differentiation chemical signature Hymenoptera 010603 evolutionary biology 01 natural sciences size CHCs Vespa lcsh:Zoology Animalia lcsh:QL1-991 Ecology Evolution Behavior and Systematics Vespa velutina biology Vespidae Ecology [SDV.BA]Life Sciences [q-bio]/Animal biology weight biology.organism_classification Vespoidea 010602 entomology Insect Science yellow-legged hornet |
| Zdroj: | Journal of Hymenoptera Research, Vol 60, Iss, Pp 119-133 (2017) Journal of Hymenoptera Research Journal of Hymenoptera Research, Sofia : Pensoft Publishers; [s.l.] : International Society of Hymenopterists., 2017, 60, pp.119-133. ⟨10.3897/jhr.60.13505⟩ Journal of Hymenoptera Research 60: 119-133 |
| ISSN: | 1070-9428 1314-2607 |
| DOI: | 10.3897/jhr.60.13505⟩ |
| Popis: | International audience; In theVespinae, morphological differences of castes are generally well-marked, except for some Vespa species, where it is difficult to distinguish between future queens and workers in autumn-winter colonies. Individual weights have widely been used as a distinguishing factor but recently cuticular hydrocarbon profiles seems to be the definitive tool, although much more expensive and time-consuming. Parameters such as size (mesos-cutum width), wet and dry weight were analysed, throughout several colonies, to differentiate female castes (workers and gynes) in the hornet Vespa velutina in Europe. These parameters were compared to cuticular hydrocarbon profiles. The results showed that in late autumn, but not earlier, populations are divided into two size groups, which, based on their CHC profiles, can be hypothesized to correspond to workers and gynes. This differentiation mirrored a good separation by size that proves to be more accurate than weight (wet and dry). The size limit between workers and gynes is established at a mesoscutum width of 4.5 mm. |
| Databáze: | OpenAIRE |
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