Sociability in captivity in populations of Italian Wall Lizard (Podarcis siculus Rafinesque, 1810) from two neighboring island Pod Kopište i Pod Mrčaru

1971. godine je 5 parova primorskih gušterica, Podarcis siculus, preneseno s nativnog otoka Pod Kopište na otok Pod Mrčara. Nakon 36 godina znanstvenici su se vratili na otočiće i otkrili da je primorska gušterica istrijebila autohtonu kršku guštericu (Podarcis melisellensis). Utvrdili su razlike u morfologiji, anatomiji i fiziologiji, ali i u ponašanju između jedinki P. siculus na ta dva otočića. Cilj ovog rada bio je utvrditi razlike u socijabilnosti između populacija te spolova unutar i između tih dviju otočnih populacija. Istraživanje je provedeno na 42 jedinke P. siculus s Pod Mrčare i 50 jedinki s Pod Kopišta. U testiranju su istovremeno sudjelovale dvije jedinke različitog spola s istog otoka. Jedinke koje su ulazile u testiranje pripadale su paru koji je proveo nekoliko mjeseci zajedno u zatočeništvu u kontroliranim uvjetima. Istraživanje je provedeno 3-komornim testom socijabilnosti u kojem su izmjerene različite varijable izabrane kao pokazatelji socijabilnosti, na primjer vrijeme provedeno u odjeljcima i uz kavez prikazanog guštera te broj kontakata i prijelaza između odjeljaka. Istraživanje je pokazalo da su mužjaci socijabilniji od ženki, a da u socijabilnosti između populacija s različitih otoka nema razlike.In 1971., five pairs of Italian wall lizard, Podarcis siculus, were transferred from their native island Pod Kopište onto Pod Mrčara island. After 36 years scientists came back to the islands and discovered that translocated Italian wall lizard wiped out the indigenous Dalmatian wall lizard (Podarcis melisellensis). They found differences in morphology, anatomy, physiology, but also behavioral changes between individuals on these two islands. The study aimed to determine differences in aggression between populations and genders within and between these two island populations. The research was carried out on 42 individuals of P. Siculus from Pod Mrčara and 50 individuals from Pod Kopište. Two individuals of a different gender from the same island population were tested at the same time. Individuals in the trial were a pair that spent 7 months together in captivity in a controlled environment. 3-chambered sociability test was used to calculate different variables selected as indicators for sociability, for example time spent in different compartments and near the cage with the presented individual, as well as the number of contacts and transitions between compartments. Results have shown that males have higher sociability levels than females, but no difference was found between island populations