Sergio Naretto

Sergio Naretto
National University of Cordoba, Argentina | UNC · Department of Ecology and Biodiversity

Investigador CONICET

About

23
Publications
16,754
Reads
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203
Citations
Citations since 2016
12 Research Items
182 Citations
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Introduction
Sergio Naretto currently works at the IDEA (Instituto de Diversidad y Ecologia Animal) (CONICET and Universidad Nacional de Cordoba) Argentina. Sergio does research in Herpetology, Evolutionary Biology and Ecology. Also he has projects with The Lizard Lab, Macquarie University (Sydney Australia)
Additional affiliations
April 2009 - December 2013
National University of Cordoba, Argentina
Position
  • Professor (Assistant)
Description
  • Assistance Professor of "Animal Behavior" and collaborator of "Tools for Animal Conservation". Both are signature of the last year of School of Biological Science, Facultad de Ciencias Exactas Físicas y Naturales. Universidad Nacional de Cordoba.
September 2008 - present
National University of Cordoba, Argentina
Position
  • PostDoc Position
Description
  • Postdoctoral fellowship. National Council of Scientific and Technical Research (CONICET, Argentina). Topic: Armaments and ornaments and reproductive tactics of lizards in relation with animal personality.
Education
April 2009 - March 2014
National University of Cordoba, Argentina
Field of study
  • Thesis: Reproductive strategies of lizards: ecological and evolutionary perspective of mating system.

Publications

Publications (23)
Article
Bite force in lizards is involved in key behaviours such as intrasexual agonistic and intersexual interactions. The relationship between morphology and function is dynamic and sexual pressures can affect bite performance differently between sexes, especially considering the biting position and temporal changes related to the reproductive cycle. The...
Article
The interaction between behavioural and phenotypic traits, such as coloration, plays a specific role at different stages of the predatory sequence. Cryptic coloration involves a match to the background that reduces the risk of detection, and it is usually optimized by immobility behaviour. In lizards, sexual dichromatism and within-individual chang...
Article
Full-text available
La elección de pareja es un aspecto importante de la selección sexual, promoviendo el desarrollo de caracteres sexuales secundarios en los individuos del sexo opuesto, conocidos como ornamentos. El color puede ser entendido como una señal visual ya que puede transmitir información sobre diferentes aspectos de los individuos, como la condición repro...
Article
Reproductive physiology is influenced by environmental pressures, particularly in ectothermic species living in harsh climatic conditions. Studying the period of time in which males exhibit semen availability and their sperm traits constitutes a powerful tool to evaluate the fertility potential of males because sperm size and sperm velocity have be...
Article
The intensity of mating competition varies according to the temporal and spatial distribution of individuals. Measuring sexual dimorphism over time and interpreting the association between individuals is therefore important if we aim to understand how sexual traits are influenced. We examined sex differences in Pristidactylus achalensis (Gallardo 1...
Article
Full-text available
Invasive reptilian predators can have substantial impacts on native species and ecosystems. Tegu lizards are widely distributed in South America east of the Andes, and are popular in the international live animal trade. Two species are established in Florida (U.S.A.) - Salvator merianae (Argentine black and white tegu) and Tupinambis teguixin sensu...
Article
The knowledge of sperm ultrastructure of Squamata provides informative traits for phylogenetic analyses. Furthermore, several sperm ultrastructure traits are important for sperm motility and longevity. Here, we provided a detailed ultrastructural description of the spermatozoa of two closely related teiid lizards, Salvator rufescens and S. merianae...
Article
Understanding pre- and post-copulatory mechanisms of sexual selection can provide insights into the evolution of male reproductive strategies. The phenotype-linked fertility hypothesis postulates that male sperm quality and secondary sexual characteristics will positively co-vary, whereas the sperm competition hypothesis predicts a negative associa...
Article
Abstract Context. Management of the exploitation of resources requires biological information on exploited species. The skins of large reptiles have a commercial value as luxury leather items and Tupinambis lizards from southern South America have historically been exploited for this purpose. Argentina implemented management plans for Tupinambis li...
Article
Full-text available
The reproductive traits of males are under influence of sexual pressures before and after copulation. The strength of sexual selection varies across populations because they undergo varying competition for mating opportunities. Besides intraspecific pressures, individuals seem to be subjected to pressures driven by interspecific interactions in sym...
Article
Segregation of habitat resources is an important mechanism that allows the coexistence of species. The diet is an important and dynamic component that can generate interactions among co-existing species. Differences in food resource use between related sympatric species have been associated frequently with divergence in multiple phenotypic traits;...
Article
Full-text available
A major goal in evolutionary biology is to determine the mechanisms responsible for maintaining phenotypic variation. Species that have evolved intersexual differences provide an opportunity to increase our understanding of trait evolution. We hypothesize that phenotypic diversity is related to reproductive strategies of female lizards and therefor...
Research
Full-text available
Lámina de campo de las serpientes comunes de las sierras de Córdoba, Argentina, para libre distribución.
Research
Full-text available
"Reptiles comunes de las Sierras de Córdoba. Lagartos y anfisbenas" es una referencia rápida para identificar los lagartos del Chaco Serrano de Córdoba, Argentina. Este trabajo posee una licencia Creative Commons, que permite su libre distribución sin fines comerciales
Article
Full-text available
In polyandrous species, sperm morphometry and sperm velocity are under strong sexual selection. Although several hypotheses have been proposed to explain the role of sperm competition in sperm trait variation, this aspect is still poorly understood. It has been suggested that an increase in sperm competition pressure could reduce sperm size variati...
Data
Figure S1. Relationship between curvilinear sperm velocity and sperm morphometric traits in Tupinambis.
Article
Full-text available
Sexual dimorphism patterns provide an opportunity to increase our understanding of trait evolution. Because selective forces may vary throughout the reproductive period, measuring dimorphism seasonally may be an interesting approach. An increased male head size may be important in intersexual and intrasexual interactions. In Tupinambis lizards, a b...
Article
Understanding factors that shape ranges of species is central in evolutionary biology. Species distribution models have become important tools to test biogeographical, ecological and evolutionary hypotheses. Moreover, from an ecological and evolutionary perspective, these models help to elucidate the spatial strategies of species at a regional scal...

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