Coexisting lacertid lizard species Podarcis siculus and Podarcis melisellensis differ in dopamine brain concentrations

2019 ◽  
Vol 205 (4) ◽  
pp. 451-456 ◽  
Author(s):  
Barbara Nikolic ◽  
Paula Josic ◽  
Davorka Buric ◽  
Mirta Tkalec ◽  
Duje Lisicic ◽  
...  
2019 ◽  
Vol 56 (4) ◽  
pp. 310-318
Author(s):  
H. S. Yildirimhan ◽  
N. Sümer

SummaryA total of 80 specimens of three species of lacertid Podarcis muralis (39), Podarcis siculus (18) and Ophisops elegans (23) from Bursa were examined for helminths. One species of Digenea, Plagiorchis elegans, 1 species of Cestoda, Mesocestoides sp. (tetrathyridium); and 3 species of Nematoda, Skrjabinodon medinae, Spauligodon saxicolae and Skrjabinelazia hoffmanni were found. The helminths reported in this study are generalist helminths that infect a number of lizards.


Author(s):  
Beatriz Tomé ◽  
D. James Harris ◽  
Ana Perera ◽  
Isabel Damas-Moreira

AbstractInvasive species can carry parasites to introduced locations, which may be key to understand the success or failure of species establishment and the invasive potential of introduced species. We compared the prevalence and infection levels of haemogregarine blood parasites between two sympatric congeneric species in Lisbon, Portugal: the invasive Italian wall lizard (Podarcis siculus) and the native green Iberian wall lizard (Podarcis virescens). The two species had significant differences in their infection levels: while P. virescens had high prevalence of infection (69.0%), only one individual of P. siculus was infected (3.7%), and while P. virescens exhibited an average intensity of 1.36%, the infected P. siculus individual had an infection rate of only 0.04%. Genetic analyses of 18S rRNA identified two different haemogregarine haplotypes in P. virescens. Due to the low levels of infection, we were not able to amplify parasite DNA from the infected P. siculus individual, although it was morphologically similar to those found in P. virescens. Since other studies also reported low levels of parasites in P. siculus, we hypothesize that this general lack of parasites could be one of the factors contributing to its competitive advantage over native lizard species and introduction success.


2005 ◽  
Vol 78 (5) ◽  
pp. 828-838 ◽  
Author(s):  
Panayiotis Pafilis ◽  
Efstratios D. Valakos ◽  
Johannes Foufopoulos

2008 ◽  
Vol 29 (2) ◽  
pp. 197-206 ◽  
Author(s):  
Raoul Van Damme ◽  
Dave Verwaijen

Abstract Foraging strategy is often considered to play a central role in moulding diverse aspects of an animal's general biology. Active foragers should have greater locomotor endurance, allowing high movement activity rates, while sit-and-waiting foragers may be better adapted to sprinting, allowing catching prey by a quick attack from an ambush site, and going with specific predator escape tactics. In this study we investigate these predicted patterns in a set of lacertid lizard species. There is considerable variation in foraging activity within Lacertidae, which allows the close investigation of the co-evolution of the traits considered. We found a tendency of positive correlation of foraging measures (PTM, percentage of time moving; MPM, number of movements per minute) with laboratory measured endurance capacity. However, the relationship of foraging measures with maximal sprint speed remains less clear. MPM correlates negatively with maximal sprint speed, but PTM does not. When sprint speed was corrected for body size, no correlations were found at all.


2018 ◽  
Vol 32 (00) ◽  
Author(s):  
Ricardo André Vicente Ribeiro ◽  
Paulo Sá-Sousa

Exotic animal invasions constitute a major threat to biodiversity worldwide. Once the Italian wall lizard (Podarcis siculus) was accidentally introduced in Lisbon (Portugal) two decades ago, the present assessment determined the core range occupied by this alien lizard in the urban area of Parque das Nações. Despite the apparent current scenario of non-expansion, the alien species interferes with the local distribution pattern of the native P. virescens, with both lizard species shown to use the available microhabitats differently. The native P. virescens population shows an overall heterogeneous distribution in the urban matrix. Otherwise, the occupancy of the invasive species clusters within the first area of introduction (garden in front of the Lisbon Oceanarium), as well as in adjacent gardens. There, P. siculus competitively excludes the native P. virescens. Apparently, there is no known reason there that prevents the alien lizard from colonizing more available geographic area and expanding.


Zoology ◽  
2010 ◽  
Vol 113 (3) ◽  
pp. 168-174 ◽  
Author(s):  
Katarina Ljubisavljević ◽  
Aleksandar Urošević ◽  
Ivan Aleksić ◽  
Ana Ivanović

2004 ◽  
Vol 54 (1) ◽  
pp. 57-75 ◽  
Author(s):  
Pedro Galán

AbstractMark-recapture techniques were used to investigate population size, age distribution, size distribution and sex ratio in a population of the lacertid lizard Podarcis bocagei in an abandoned gravel pit in northwest Spain. The study was carried out over a 2-year period. Despite relatively high maximum longevity, the population age distribution was characteristic of small, short-lived lizard species (i.e., there was a relatively high proportion of immature individuals). Population size declined over the study period, largely because of a drop in the number of immature animals: this may be partially attributable to density-dependent factors, but was probably due largely to a decline in habitat favourability as a result of colonisation of the study site by vegetation. The sex ratio was significantly female-biased in all cohorts studied, not only among adults but also among juveniles and sub-adults. However, sex ratio at hatching (as investigated by laboratory hatching of clutches laid by captured pregnant females) did not differ significantly from one-to-one. There was no difference found in survival probabilities between males and females. The observed bias in sex ratio must therefore be attributed to between-sex differences in net emigration.


2016 ◽  
Vol 24 (1) ◽  
pp. 63
Author(s):  
Vincenzo Reina ◽  
Filippo Spadola ◽  
Manuel Morici ◽  
Paola Sgroi ◽  
Antonino Marcianò

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