. Asiatic herpetological research. Reptiles -- Asia Periodicals; Amphibians -- Asia Periodicals. Vol. 4, p. 106 Asiatic Herpetological Research February 1992. FIG 8. The movements of an adult female T. przewalskii. Dot: records of the lizard in 1981. Triangle: records of the lizard in 1982. Star: centroid of the 1981 records. Hexagon: centroid of the 1982 records. Solid arrow: denotes the next closest sighting in time. Dashed line: arbitrary boundary of the 1981 individual range. Dot-dash line: arbitrary boundary of the 1982 individual range. other parameters (the combined data for both season
. Asiatic herpetological research. Reptiles -- Asia Periodicals; Amphibians -- Asia Periodicals. Vol. 4, p. 106 Asiatic Herpetological Research February 1992. FIG 8. The movements of an adult female T. przewalskii. Dot: records of the lizard in 1981. Triangle: records of the lizard in 1982. Star: centroid of the 1981 records. Hexagon: centroid of the 1982 records. Solid arrow: denotes the next closest sighting in time. Dashed line: arbitrary boundary of the 1981 individual range. Dot-dash line: arbitrary boundary of the 1982 individual range. other parameters (the combined data for both seasons) are higher in males than in females (Table 1), but in no case is the difference at a significant level (home range: t = , N = 19, P > ; individual movements: t = , N = 32, P > ; radius of recurrent sightings: t = , N = 21, P > ; maximum movements: t = , N = 22, P > ). However, the home range area and the radius of recurrent sightings is significandy greater in males than in subadults (home range: t = , N = 26, P < ; recurrent sightings: t = , N = 28, P < ). The home ranges of these geckos overlap greatly (Fig. 7), irrespective of sex. Obviously Przewalsky's Geckos are not territorial. Their spatial distribution corresponds to the scheme typical lizards actively looking for their prey, living in conditions of relatively poor visibility, and widely exploiting nonvisual orientation methods (Stamps, 1977). Special attention should be given to the movement of marked juveniles. Unlike adults (see above), only 2 of 15 juveniles marked in 1981 were recorded in the next year (one of them was at a distance of 180 m; another had formed a home range 23 m from the marking point). Altogether, 18 juveniles were marked, of which 14 were not encountered during the same year, and 4 occurred twice each. It may be assumed that in Przewalsky's Gecko, juveniles are in the dispersal mode, similar to the agamid, Phrynocephalus versic
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