| Full text | |
| Author(s): |
Mariano-Martins, Pedro
[1]
;
Monfardini, Raquel Dietsche
[1]
;
Lo-Man-Hung, Nancy
[1]
;
Torres, Tatiana Teixeira
[1]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Inst Biosci, Dept Genet & Evolutionary Biol, A101, Tv 14 Butanta, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION; JAN 2022. |
| Web of Science Citations: | 0 |
| Abstract | |
Spiders constitute more than 49,000 described species distributed all over the world, and all ecological environments. Their order, Araneae, is defined by a set of characteristics with no parallel among their arachnid counterparts (e.g., spinnerets, silk glands, chelicerae that inoculate venom, among others). Changes in developmental pathways often underlie the evolution of morphological synapomorphies, and as such spiders are a promising model to study the role of developmental genes in the origin of evolutionary novelties. With that in mind, we investigated changes in the evolutionary regime of a set of six developmental genes, using spiders as our model. The genes were mainly chosen for their roles in spinneret ontogeny, yet they are pleiotropic, and it is likely that the origins of other unique morphological phenotypes are also linked to changes in their sequences. Our results indicate no great differences in the selective pressures on those genes when comparing spiders to other arachnids, but a few site-specific positive selection evidence were found in the Araneae lineage. These findings lead us to new insights on spider evolution that are to be further tested. (AU) | |
| FAPESP's process: | 18/06719-0 - Molecular bases of spinneret regeneration in spiders (Arachnida: Araneae) |
| Grantee: | Pedro Mariano Martins |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 19/12282-7 - Discovering the developmental genetic basis of spinneret morphogenesis |
| Grantee: | Nancy França Lo Man Hung |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 17/19616-2 - Evolution and development of spiders' spinnerets (Arachnida: Araneae) |
| Grantee: | Nancy França Lo Man Hung |
| Support Opportunities: | Scholarships in Brazil - Doctorate |