@conference {16389, title = {EFFECTS OF FERAL CATS ON THE EVOLUTION OF ANTIPREDATOR BEHAVIORS IN THE AEGEAN ISLAND LIZARD PODARCIS ERHARDII}, booktitle = {12TH INTERNATIONAL CONGRESS ON THE ZOOGEOGRAPHY AND ECOLOGY OF GREECE AND ADJACENT REGIONS}, year = {2012}, month = {18 {\textendash} 22 June}, publisher = {HELLENIC ZOOLOGICAL SOCIETY}, organization = {HELLENIC ZOOLOGICAL SOCIETY}, address = {Athens}, keywords = {antipredator behavior, effects, FERAL CATS, lizards, Podarcis erhardii, άγριες γάτες, αντιθηρευτική συμπεριφορά, αποτελέσματα, σαύρες}, author = {Li, B. and Bednekoff, P. and Belasen, A. and Pafilis, P. and Efstratios D. Valakos and Foufopoulos, J.} } @book {13359, title = {The amphibians and reptiles of Greece}, year = {2008}, publisher = {Edition Chimaira}, organization = {Edition Chimaira}, author = {Efstratios D. Valakos and Pafilis, P. and Sotiropoulos, K. and Lymberakis, P. and Maragou, P. and Foufopoulos, J.} } @article {11130, title = {Parasitic infracommunities of the Aegean wall lizard Podarcis erhardii (Lacertidae, Sauria): isolation and impoverishment in small island populations}, journal = {Amphibia-ReptiliaAmphibia-Reptilia}, volume = {30}, number = {4}, year = {2009}, month = {2009}, pages = {493-503}, isbn = {0173-5373}, author = {Roca, V. and Foufopoulos, J. and Efstratios D. Valakos and Pafilis, P.} } @article {11131, title = {Parasitic infracommunities of the Aegean wall lizard Podarcis erhardii (Lacertidae, Sauria): Isolation and impoverishment in small island populations}, journal = {Amphibia-ReptiliaAmphibia-Reptilia}, volume = {30}, number = {4}, year = {2010}, note = {Cited By (since 1996): 1Export Date: 8 November 2011Source: Scopus}, pages = {493-503}, author = {Roca, V. and Foufopoulos, J. and Efstratios D. Valakos and Pafilis, P.} } @article {9674, title = {Digestive performance in five Mediterranean lizard species: effects of temperature and insularity}, journal = {Journal of Comparative Physiology BJournal of Comparative Physiology B}, volume = {177}, number = {1}, year = {2007}, pages = {49-60}, abstract = {Temperature sensitivity of digestive processes has important ramifications for digestive performance in ectothermic vertebrates. We conducted a comparative analysis of temperature effects on digestive processes [gut passage times (GPTs) and apparent digestive efficiencies (ADEs)] in five lacertid lizards occurring in insular (Podarcis erhardii, P. gaigeae), and mainland (P. muralis, P. peloponnesiaca, Lacerta graeca) Mediterranean environments. GPTs were negatively correlated to temperature with mainland taxa having 10-20\% longer GPTs than island taxa. In contrast to previous studies that estimate ADEs using bomb calorimetry, we compare ADEs by analyzing discrete efficiencies for lipids, sugars and proteins at three temperature regimes (20, 25, and 30 degrees C); each of these categories produces different results. ADEs for lipids and sugars showed a monotonic increase with temperature whereas ADEs for proteins decreased with temperature. Island taxa had consistently higher ADEs than their mainland counterparts for lipids and for proteins but not for sugars. They are characterized by superior energy acquisition abilities despite significantly shorter GPTs. Their increased digestive performance relative to the mainland species appears to allow them to maximize energy acquisition in unproductive island environments where food availability is spatially and seasonally clustered.}, keywords = {Reptilia}, author = {Pafilis, P. and Foufopoulos, J. and Poulakakis, N. and Lymberakis, P. and Efstratios D. Valakos} } @article {9681, title = {Comparative postautotomy tail activity in six Mediterranean lacertid lizard species}, journal = {Physiological and Biochemical ZoologyPhysiological and Biochemical Zoology}, volume = {78}, number = {5}, year = {2005}, pages = {828}, publisher = {UNIVERSITY OF CHICAGO PRESS}, abstract = {Tail autotomy, the self-induced tail separation from the body, is a common and effective antipredator mechanism in lizards. In this study, we examine the muscle energetics of tail shedding in six lacertid lizard species (Podarcis erhardii, Podarcis peloponnesiaca, Podarcis muralis, Podarcis gaigeae, Podarcis milensis, and Lacerta graeca) from the northeast Mediterranean region. Very long periods of postautotomy tail movement were demonstrated for all species (range=68 min), and differences among species were not statistically significant. Postautotomy tail movement, powered by anaerobic muscle activity, resulted in a strong increase in lactate concentrations and a concomitant depletion of muscle glycogen of exhausted tails relative to resting tails. No significant differences were found in either lactate or glycogen concentrations among the species examined. Duration of movement was negatively correlated with final lactate concentrations. The lack of differentiation in postautotomy energetic physiology in this group of species that have evolved under very different predation environments indicates that postautotomy muscle metabolism involves an overall conservative suite of characters.}, keywords = {Reptilia}, author = {Pafilis, P. and Efstratios D. Valakos and Foufopoulos, J.} } @article {6793, title = {Effects of fragmentation on genetic diversity in island populations of the Aegean wall lizard Podarcis erhardii (Lacertidae, Reptilia)}, journal = {Molecular Phylogenetics and EvolutionMolecular Phylogenetics and Evolution}, volume = {52}, number = {2}, year = {2009}, month = {Aug}, pages = {395-405}, abstract = {Landbridge islands offer unique opportunities for understanding the effects of fragmentation history on genetic variation in island taxa. The formation of islands by rising sea levels can be likened to a population bottleneck whose magnitude and duration is determined by island area and time since isolation, respectively. The Holocene landbridge islands of the Aegean Sea (Greece) were formed since the last glacial maximum and constitute an ideal system for disentangling the effects of island area, age and geographic isolation on genetic variability. Of the many reptile species inhabiting this island system, the Aegean wall lizard Podarcis erhardii is an excellent indicator of fragmentation history due to its widespread distribution and poor over-water dispersal abilities. In this study, we utilize a detailed record of Holocene fragmentation to investigate the effects of island history on wall lizard mitochondrial and nuclear microsatellite diversity. Findings show that the spatial distribution of mitochondrial haplotypes reflects historical patterns of fragmentation rather than geographic proximity per se. In keeping with neutral bottleneck theory, larger and younger islands retain more nuclear genetic variation than smaller, older islands. Conversely, there is no evidence of an effect of isolation by distance or effect of distance to the nearest larger landmass on genetic variability, indicating little gene flow between islands. Lastly, population-specific measures of genetic differentiation are inversely correlated with island area, suggesting that smaller islands exhibit greater divergence due to their greater susceptibility to drift. Taken together, these results suggest that both island area and time since isolation are important predictors of genetic variation and that these patterns likely arose through the progressive fragmentation of ancestral diversity and the ensuing cumulative effects of drift. (C) 2009 Elsevier Inc. All rights reserved.}, isbn = {1055-7903}, author = {Hurston, H. and Voith, L. and Bonanno, J. and Foufopoulos, J. and Pafilis, P. and Efstratios D. Valakos and Anthony, N.} }