| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Sao Paulo, Dept Biol, Ribeirao Preto - Brazil
[2] Univ Fed Vicosa, Dept Biol Geral, Vicosa, MG - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | INVERTEBRATE REPRODUCTION & DEVELOPMENT; v. 62, n. 3, p. 162-168, 2018. |
| Web of Science Citations: | 0 |
| Abstract | |
Hymenopteran insects have meroistic polytrophic ovaries characterised by trophocytes associated with oocytes inside the follicles. In pro-ovigenic species, all oocytes mature before emergence and no trace of oogenesis is visible in adult females. Pro-ovigeny is a rare condition among Hymenoptera, but common in pollinating fig wasps. In the present investigation, we studied adult and pupa females of three fig wasp species with different trophic strategies. We demonstrated that females of Pegoscapus aerumnosus and Idarnes spp. have an unusual ovarian organisation (i.e. each ovariole has only one mature egg and no oocyte) that has led to misleading interpretation of fig wasp reproductive anatomy. The ovaries of these studied species have several ovarioles, recognisable by the presence of nuclei of tunica propria cells surrounding them. Each adult wasp ovariole had one mature egg. None of the pupae had mature eggs, but all of them had follicles with oocytes in different developmental stages. The studied fig wasps are pro-ovigenic, irrespective of their trophic strategy, since there were no signs of ovigeny in adult females. We discuss ecological and phylogenetic factors that could play a role in fig wasps reproductive strategies. (AU) | |
| FAPESP's process: | 15/25417-7 - Diversity and evolution of host-species relationship of wasps associated with neotropical fig trees |
| Grantee: | Rodrigo Augusto Santinelo Pereira |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 13/01918-1 - Role of the venom gland in fig wasps larval biology (Hymenoptera: Chalcidoidea) |
| Grantee: | Larissa Galante Elias |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |