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Condition- and context-dependent variation of sexual dimorphism across lizard populations at different spatial scales.
Muraro, Martina; Sherpa, Stéphanie; Barzaghi, Benedetta; Bombi, Pierluigi; Borgatti, Danilo; Di Canio, Viola; Dalpasso, Andrea; Falaschi, Mattia; Gambioli, Benedetta; Manenti, Raoul; Marta, Silvio; Momigliano, Paolo; Nanni, Veronica; Pardo, Claudio; Parrino, Elia Lo; Scali, Stefano; Storniolo, Federico; Vignoli, Leonardo; Zuffi, Marco A L; Sacchi, Roberto; Salvi, Daniele; Ficetola, Gentile Francesco.
Affiliation
  • Muraro M; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Sherpa S; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy. stephanie.sherpa@hotmail.fr.
  • Barzaghi B; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Bombi P; Institute of Research On Terrestrial Ecosystems, National Research Council, 00015, Montelibretti, Italy.
  • Borgatti D; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Di Canio V; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Dalpasso A; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Falaschi M; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Gambioli B; Department of Sciences, Roma Tre University, 00146, Rome, Italy.
  • Manenti R; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Marta S; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Momigliano P; Area of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Pok Fu Lam, Hong Kong.
  • Nanni V; School for Advanced Studies IUSS, Science, Technology and Society Department, 25100, Pavia, Italy.
  • Pardo C; Department of Ecological and Biological Sciences, Tuscia University, 01100, Viterbo, Italy.
  • Parrino EL; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
  • Scali S; Museo Di Storia Naturale, C.so Venezia 55, 20121, Milano, Italy.
  • Storniolo F; Department of Earth and Environmental Sciences, University of Pavia, 27100, Pavia, Italy.
  • Vignoli L; Department of Sciences, Roma Tre University, 00146, Rome, Italy.
  • Zuffi MAL; Museo Di Storia Naturale -Università Di Pisa, via Roma 79, 56011, Calci (Pisa), Italy.
  • Sacchi R; Department of Earth and Environmental Sciences, University of Pavia, 27100, Pavia, Italy.
  • Salvi D; Department of Health, Life and Environmental Sciences, University of L'Aquila, 67100, L'Aquila, Italy.
  • Ficetola GF; Department of Environmental Science and Policy, Università Degli Studi Di Milano, Via Celoria 10, 20133, Milan, Italy.
Sci Rep ; 12(1): 16969, 2022 10 10.
Article in En | MEDLINE | ID: mdl-36216914
The evolution of sexual dimorphism (SD) is driven by intricate interplays between sexual and natural selection. When it comes to SD variation within populations, however, environmental factors play a major role. Sexually selected traits are expected to be strongly dependent on individual body condition, which is influenced by the local environment that individuals experience. As a consequence, the degree of SD may also depend on resource availability. Here, we investigated the potential drivers of SD expression at two sexually dimorphic morphometric traits, body size (snout vent length) and head shape (head geometric morphometrics), in the Italian wall lizard (Podarcis siculus). We assessed the existence of condition- and context-dependent SD across ten islands of the Aeolian archipelago (southern Italy), at within- and among-population scales. We observed strong geographical variation of SD among islands, and tested three potential SD predictors related to resource availability (individual body condition, ecosystem productivity, temperature). Body condition and ecosystem productivity were the main drivers of body size SD variation, and body condition was also the main driver for head shape SD. Our results highlight that the expression of SD in the Italian wall lizard is both condition- and context-dependent. These results are congruent at within- and among-populations scales highlighting that spatial multi-scale analysis represents a useful approach to understand patterns of SD expression.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Lizards Type of study: Prognostic_studies Limits: Animals / Humans Language: En Journal: Sci Rep Year: 2022 Document type: Article Affiliation country: Italia Country of publication: Reino Unido

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Lizards Type of study: Prognostic_studies Limits: Animals / Humans Language: En Journal: Sci Rep Year: 2022 Document type: Article Affiliation country: Italia Country of publication: Reino Unido