Volume 30, Issue 10 p. 1978-1989
RESEARCH ARTICLE

Ecological and biogeographic processes drive the proteome evolution of snake venom

Tuany Siqueira-Silva

Corresponding Author

Tuany Siqueira-Silva

PIBi Lab – Laboratório de Pesquisas Integrativas em Biodiversidade, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil

Correspondence

Tuany Siqueira-Silva, Laboratório de Pesquisas Integrativas em Biodiversidade, Department of Biology, Universidade Federal de Sergipe, Av. Marechal Rondon, s/n - Jardim Rosa Elze, São Cristóvão - SE, 49100-000, Brazil.

Email: [email protected]

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Luiz Antônio Gonzaga de Lima

Luiz Antônio Gonzaga de Lima

PIBi Lab – Laboratório de Pesquisas Integrativas em Biodiversidade, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil

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Jônatas Chaves-Silveira

Jônatas Chaves-Silveira

PIBi Lab – Laboratório de Pesquisas Integrativas em Biodiversidade, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil

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Talita Ferreira Amado

Talita Ferreira Amado

BioMa – Biodiversity and Macroecology Lab, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain

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Julian Naipauer

Julian Naipauer

UM-CFAR/ Sylvester CCC Argentina Consortium for Research and Training in Virally induced AIDS-Malignancies, Tumor Biology Program, Sylvester Comprehensive Cancer Center and Miami Center for AIDS Research, Department of Microbiology and Immunology, University of Miami Miller School of Medicine, Miami, Florida, USA

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Pablo Riul

Pablo Riul

Deptartamento de Sistemática e Ecologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil

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Pablo Ariel Martinez

Pablo Ariel Martinez

PIBi Lab – Laboratório de Pesquisas Integrativas em Biodiversidade, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil

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First published: 27 July 2021
Citations: 3

Abstract

Aim

The emergence of venom is an evolutionary innovation that favoured the diversification and survival of snakes. The composition of snake venoms is known in detail from venom gland proteomic data. However, there is still a gap of knowledge about the forces that lead to the expression of different toxins in different proportions in the venom cocktail across space and time.

Location

World.

Time period

Modern.

Major taxa studied

Elapidae and Viperidae.

Methods

We integrated proteomic data with phylogenetic comparative methods to understand how ecological and biogeographic processes drive the evolution of snake venom.

Results

We observed that more productive environments favour a more complex venom, with more toxins in similar proportions. We found that taxa that live on islands, where there is lower variability of resources, tended to present less complex venom dominated by few toxins. In such cases, the extent of an island's isolation seems to be a relevant factor for faster fixation of specific venom compositions.

Main conclusion

We show that ecological and biogeographic processes, which can act differentially over time and space, affect the gene expression of toxins in snake venoms.

DATA AVAILABILITY STATEMENT

The data supporting the results are available via Dryad: https://doi.org/10.5061/dryad.nzs7h44qs

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.