| Full text | |
| Author(s): |
Carvalho, Andre L. G.
[1]
;
Jeckel, Adriana M.
[1]
;
Nisa, Carolina
[1]
;
Luna, Maria Celeste
[2]
;
Piantoni, Carla
[3]
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, Inst Biociencias, Dept Zool, Rua Matao 101, Travessa 14, Cidade Univ, BR-05508090 Sao Paulo, SP - Brazil
[2] Museo Argentino Ciencias Nat Bernardino Rivadavia, Div Herpetol, Av Angel Gallardo 470, C1405 DJR, Buenos Aires, DF - Argentina
[3] Univ Sao Paulo, Inst Biociencias, Dept Fisiol, Rua Matao 101, Travessa 14, Cidade Univ, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY; v. 192, n. 4, p. 1137-1166, AUG 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Chemical signalling is an essential component of the communication system of lizards, and epidermal glands are responsible for producing semiochemicals that regulate many behavioural interactions. Two types of epidermal glands have been previously described for lizards: follicular and generation glands. Generation glands are characterized by the aggregation of novel glandular cell types in the epithelium and the lack of a lumen or external pore. Despite the fact that several subtypes of generation glands have been recognized over the years, the morphology, taxonomic distribution, function and evolutionary origins of generation glands remain nearly unexplored in Neotropical clades. Here, we describe a novel escutcheon-type generation gland ('a-gland') for lizards of the South American family Tropiduridae, characterize its structural and ultrastructural organization, and study the homology of the constituent parts in a phylogenetic framework. The a-glands emerged in the ancestor of Eurolophosaurus, Plica, Strobilurus, Tropidurus and Uracentron, and are found in at least 39 species with diverse ecological habits. We preliminarily analysed the protein profile of a-glands and discovered differential expression of protein components between sexes. Our investigations change the general view about epidermal gland homology, leading us to argue that generation and follicular glands are possibly more closely related functionally and evolutionarily than previously thought. (AU) | |
| FAPESP's process: | 15/12841-5 - Chemical characterization of epidermal, cloacal and preanal and femoral glands secretions of the Brazilian lizards species of Teiidae Family (Squamata) |
| Grantee: | Carolina Nisa Ramiro |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 12/10000-5 - A multi-disciplinary approach to the study of amphibian diversification |
| Grantee: | Taran Grant |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 16/08249-6 - Entering the phylogenomic era: advances in Tropidurine systematics must unveil the origins of a complex South American lizard radiation |
| Grantee: | André Luiz Gomes de Carvalho |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 15/25272-9 - The implications of thermoregulatory behavioral syndromes in exploring new environments: Contribution of individual behavior to the thermal ecology of lizards |
| Grantee: | Carla Piantoni |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/20235-3 - Entering the phylogenomic era (BEPE phase): advances in tropidurine systematics must unveil the origins of a complex South American lizard radiation |
| Grantee: | André Luiz Gomes de Carvalho |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 16/09999-9 - Sequestration efficiency, metabolism and excretion of alkaloids in poison frogs and their non-sequestering relatives |
| Grantee: | Adriana Moriguchi Jeckel |
| Support Opportunities: | Scholarships in Brazil - Doctorate |