Structural comparison of the rostra of two species of weevils coexisting on Ailanthus altissima: the response to ecological demands of egg deposition
| Autor: | Gan-Yu Zhang, Junbao Wen, Wenjuan Guo, Qian Wang, Xiaoyi Wang, Jin Cui |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Evolution Acclimatization Oviposition 010603 evolutionary biology 01 natural sciences Pregnancy Adaptive radiation QH359-425 Animals QH540-549.5 Ailanthus altissima Ailanthus biology Ecology Host (biology) Rosrta Weevil Rostrum Parturition Eucryptorrhynchus brandti Structure General Medicine biology.organism_classification Arthropod mouthparts 010602 entomology Weevils Female Adductor muscles Adaptation Research Article Eucryptorrhynchus scrobiculatus |
| Zdroj: | BMC Ecology and Evolution, Vol 21, Iss 1, Pp 1-11 (2021) BMC Ecology and Evolution |
| ISSN: | 2730-7182 |
| Popis: | BackgroundElongated rostra play an important role in the egg-laying of weevils, and its emergence plays a key role in the adaptive radiation of weevils.Eucryptorrhynchus scrobiculatusMotschulsky andE. brandtiHarold co-occur on the same only hostAilanthus altissima, while their oviposition sites are different. In order to understand the adaptation between the rostra of the two weevils and their oviposition sites, the structural differentiation of the rostra inE. scrobiculatusandE. brandtiwas compared.ResultsThe present study reveals that: (1) The rostra length ofE. scrobiculatusandE. brandtiwas found to be correlated with body size, larger weevils have a correspondingly longer rostrum. The increase of rostra length may be a byproduct of larger weevils. (2) There were significant differences in the external shape of the two rostra, especially the shape of the mandibles of the mouthparts at the apex of the rostra used to excavate an oviposition cavity. (3) There was no difference in the size of the abductor muscles that control the extension of the mandibles, but there were significant differences in the size of the adductor muscles that control the contraction of the mandibles.ConclusionsThese structural differences reflect the functional potential ovipositional tactics of rostra, which is considered to be a response to the ecological demands of egg deposition, and also provide new insights into the coexistence of two weevil species in the same hostA. altissima. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink