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Smarter in the city?Lizards from urban and semi-natural habitats do not differ in a cognitive task in two syntopic species

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Current Zoology 2024年第3期70卷 361-370页

作者： Isabel Damas-Moreira Birgit Szabo Georgios Drosopoulos Carolin Stober Duje Lisičić Barbara ACaspers Department of Behavioural Ecology Bielefeld University33615Germany Division of Behavioural Ecology University of Bern3032Switzerland Department of Biology University of Zagreb10000Croatia Joint Institute of Individualisation in a Changing Environment(JICE) University of Münster and Bielefeld University33615Germany

Urbanization occurs at a global scale,imposing dramatic and abrupt environmental changes that lead to biodiversity ***,some animal species can handle these changes,and thrive in such artifcial *** possible explanation is that urban individuals are equipped with better cognitive abilities,but most studies have focused on birds and mammals and yielded varied *** have received much less attention,despite some lizard species being common city *** Italian wall lizard,podarcis siculus,and the common wall lizard,podarcis muralis,are two successful lizards in anthropogenic habitats that thrive in urban *** test for differences in a cognitive skill between urban and semi-natural environments,we investigated inhibitory control through a detour task in syntopic populations of the two species,across 249 lizards that were tested in partially artifcial feld *** inhibitory control is considered essential for higher degrees of cognitive fexibility and other higher-level cognitive *** this task,we confronted lizards with a transparent barrier,separating them from a desired shelter area that they could only reach by controlling their impulse to go straight and instead detour the *** found no differences between lizards in urban and semi-natural environments,nor between species,but females overall performed better than ***,48%of the lizards in our study did not perform a correct trial in any of the 5 trials,hinting at the diffculty of the task for these spe*** study is among the frst to address lizard cognition,through their inhibitory control,as a potential explanation for success in cities and highlights one should be careful with assuming that urban animals generally have enhanced cognitive performance,as it might be taxa,task,or condition dependent.

关键词： podarcis siculus podarcis muralis Behavior Cognition Detour task Reptile.

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Epistatic interactions between pterin and carotenoid genes modulate intra-morph color variation in a lizard

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Integrative Zoology 2022年第1期17卷 44-53页

作者： Prem AGUILAR Pedro ANDRADE Guillem PÉREZ I DE LANUZA CIBIO/InBIO Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do PortoPortoPortugal Ethology Lab Institut Cavanilles de Biodiversitat i Biologia EvolutivaUniversitat de ValènciaValènciaSpain

Color polymorphisms have become a major topic in evolutionary biology and substantial efforts have been devoted to the understanding of the mechanisms responsible for originating such colorful ***-morph continuous variation,on the other hand,has been neglected in most of the ***,we combine spectrophotometric/visual modeling and genetic data to study the mechanisms promoting continuous variation within categorical color morphs of podarcis *** results suggest that intra-morph variability in the pterin-based orange morph is greater compared to white and yellow *** also show that continuous variation within the orange morph is partially discriminable by *** results indicate that allelic variants at the BCO2 locus(responsible for deposition of yellow carotenoids)contribute to generate continuous variation in orange ***,other intrinsic and/or extrinsic mechanisms,such as body size,might be involved,opening a new avenue for future research on the drivers of continuous variation within-morphs.

关键词： BCO2 color polymorphism continuous variation lizard podarcis muralis

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Inter- and intra-population variability of the protein content of femoral gland secretions from a lacertid lizard

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Current Zoology 2017年第6期63卷 657-665页

作者： Marco MANGIACOTTI Marco FUMAGALLI Stefano SCALI Marco A.L. ZUFFI Maddalena CAGNONE Roberta SALVINI Roberto SACCHI Department of Earth and Environmental Sciences University of Pavia Via Taramelli 24 Pavia 1-27100 Italy Museo Civico di Storia Naturale di Milano Corso Venezia 55 Milano 1-20121 Italy Department of Biology and Biotechnology "L. Spallanzani" Biochemistry Unit University of Pavia Via Taramelli 3 Pavia 1-27100 Italy Museo di Storia Naturale Universita di Pisa Via Roma 79 Calci Pisa 1-56011 Italy Department of Molecular Medicine Biochemistry Unit University of Pavia Via Taramelli 3 Pavia 1-27100 Italy

Femoral glands of male lizards produce waxy secretions that are involved in inter- and intraspecific chemical communication. The main components of these secretions are proteins and lipids, the latter having been extensively studied and already associated to male quality. On the opposite, the composition and role of proteins are nearly unknown, the only available information coming from few studies on iguanids. These studies got the conclusion that proteins might have a communicative function, notably they could signal individual identity. A generalization of these findings requires the extension of protein analysis to other lizard families, and the primary detection of some patterns of individual variability. Using the common wall lizard as a model species, the protein fraction of the femoral pore secretions was investigated to provide the first characterization of this component in a lacertid lizard and to explore its source of variability, as a first step to support the hypothesized communicative role. Samples of proteins from femoral secretions were collected from 6 Italian populations and subjected to 1-dimensional electrophoresis. The binary vector of the band presence/absence was used to define the individual profiles. Protein fraction is found to have a structured pattern, with both an individual and a population component. Although the former supports the potential communicative role of proteins, the latter offers a double interpretation, phylogenetic or environmental, even though the phylogenetic effect seems more likely given the climatic resemblance of the considered sites. Further studies are necessary to shed light on both these issues.

关键词： podarcis muralis SDS-PAGE chemical communication femoral glands lizards proteins

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