Katsiyiannis, P. (2026) -
A Case of a Peloponnese Wall Lizard Podarcis Peloponnesiacus on the Water’s Surface. - Parnassiana Archives 14: 15–17.
Kypraios-Skrekas, V. & Lazaris, A. & Koutrouditsou, L.K. & Sotiropoulos, K. & Giokas, S. (2026) -
Divergent Functional Responses of Reptiles and Amphibians in a Mediterranean Mountain System. - Ecologies 2026, 7, 17.

×Understanding how environmental conditions shape the functional composition of ecological communities is a central goal in community ecology. In this study, we apply this framework to the reptile and amphibian assemblages within Greece’s Mount Chelmos protected area. Based on comprehensive field surveys (2018–2021) across 168 sampling stations, we compiled species trait databases and quantified functional diversity using a corrected Rao’s Q index. We modeled the response of functional diversity to climate, land cover, topography (altitude, slope, aspect), geographic location, and taxonomic diversity, using Generalized Additive Models (GAMs). Additionally, we examined traitspace structure via PCA and evaluated environmental drivers of trait composition with multivariate GAMs. For reptiles, functional diversity was significantly affected by altitude, climate, and aspect, with higher values predicted in water-associated marginal zones surrounding the mountain massif. Traitspace analysis revealed clear ecological structuring along axes related to locomotion, body size, reproductive mode, foraging strategy, and substrate use, shaped by distinct combinations of environmental filters. In amphibians, environmental effects on functional diversity were not statistically significant; however, traitspace showed discernible responses to land cover, climate, and aspect, suggesting weaker—though detectable—filtering processes. Collectively, our findings indicate that Mount Chelmos functions as a system that modulates diversity, with environmental filters operating at fine-to-medium spatial scales to shape the functional composition and
diversity of its herpetofauna.
Mendelow, R. & Brock, K.M. (2026) -
First sightings of axanthism in the Lacertidae, observed in the Greek endemic Erhard’s Wall Lizard, Podarcis erhardii (Bedriaga, 1882). - Herpetology Notes 19: 1–3.
Reppa, A. & Paraskevopoulou, F. & Papageorgiou, K. & Tounias, G. & Santikou, P. & Parmakelis, A. & Valakos, E.D. & Pafilis, P. & Sagonas, K. (2026) -
Convergent digestive adaptation to resource limitation in an insular lizard across a microgeographic archipelago. - Journal of Animal Ecology, 00, 1–14.

×1. Island systems provide valuable natural laboratories for investigating how ecological constraints drive physiological evolution. Although dietary shifts are known to influence morphological divergence in insular lizards, their consequences for digestive physiology remain insufficiently understood.
2. Using 10 wild populations of the Skyros wall lizard (Podarcis gaigeae) across the Skyros Archipelago, we tested whether fine-scale variation in habitat and prey availability predicts divergence in digestive performance. We quantified arthropod abundance, gastrointestinal morphology, gut passage time, digestive enzyme activity and apparent digestive efficiency (ADE) under standardized laboratory conditions.
3. Islet populations consistently exhibited slower gut passage, longer gastrointestinal tracts, higher protease and lipase activities, and greater ADE relative to populations on the main island of Skyros, indicating enhanced digestive performance in resource-limited environments.
4. AICC-based model selection showed that prey availability and habitat type, rather than geographic distance or genetic relatedness, best explained patterns of digestive divergence among populations.
5. These results demonstrate repeated and independent adaptive responses to resource scarcity and highlight digestive plasticity as a key mechanism facilitating persistence in insular habitats.
Tzoras, E. & Jablonski, D. (2026) -
Human-mediated dispersals in the Aegean region: the case of Anatololacerta pelasgiana on Chalki Island (Greece: Dodecanese). - Acta Herpetologica 21(1): 125-130.

×We report the first confirmed occurrence of Anatololacerta pelasgiana on Chalki Island (Dodecanese, Greece). The species was detected exclusively in and around the main settlement and port, within an area of ~0.9 km², suggesting an established population likely originating from a recent human-mediated introduction. To infer source affinity, we sequenced the mitochondrial cytochrome b gene from two individuals and compared these sequences with published ones from Aegean and adjacent Anatolian populations. Based on the analysed length of the cytochrome b fragment, the Chalki specimens share a widespread haplotype known from Rhodes, Kastellorizo, and Athens (Greece), as well as from southwestern Turkey. These results suggest repeated, transport-mediated introductions likely from nearby Rhodes as a recurrent driver of secondary colonization in the southeastern Aegean and underscore local trade links as pathways for small-island translocations, potentially relevant to other reptiles in the region.