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      Hemidactylus frenatus (Squamata: Gekkonidae): call frequency, movement and condition of tail in Costa Rica

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          Call frequency and movements of the gecko Hemidactylus frenatus were studied in Punta Morales, Costa Rica from April 1999 through May 2000. Call activity of H. frenatus was positively related to air temperature at night and throughout the year. Higher activity was at dusk, dawn, and during the hottest months. Call frequency was related with gecko abundance per month, although not during the night. More males and females had a regenerated tail compared to juveniles, the last ones could have it complete or regenerated. Females moved longer distances than males and juveniles. Adults were found higher on walls. Males and females were recaptured more times than juveniles, and the period of time between their recaptures was longer. Members of this population do not seem to be as aggressive to other geckos as mentioned in the literature. Rev. Biol. Trop. 54 (4): 1125-1130. Epub 2006 Dec. 15

          Translated abstract

          Estudié la frecuencia de canto y el desplazamiento de la lagartija Hemidactylus frenatus en Punta Morales, CostaRica. La frecuencia de canto se corelaciona positivamente con la temperatura ambiental durante la noche y con la temperatura a lo largo del año. La mayor actividad fue al anochecer, al amanecer y durante los meses más calurosos. La abundancia mensual de lagartijas se relacionó con la frecuencia de canto, no así la abundancia por noche. Las colas regeneradas son más frecuentes en hembras y machos que en las lagartijas jóvenes. Las hembras se desplazaron mayores distancias que machos y jóvenes. Los adultos se encontraban más alto en las paredes de los edificios. Los machos y hembras se recapturaron más veces que los jóvenes, y el tiempo entre recapturas fue mayor. Esta población no parece ser tan agresiva como se menciona en la literatura

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          Most cited references 27

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          The Dance Language and Orientation of Bees. Karl von Frisch. Translated from the German edition (Berlin, 1965) by Leigh E. Chadwick. Belknap Press (Harvard University Press), Cambridge, Mass., 1967. xiv + 566 pp., illus. $15

           E. Wilson (1968)
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            Mechanisms in the Competitive Success of an Invading Sexual Gecko over an Asexual Native.

            The competitive displacement by a sexual gecko species of an asexual resident gecko has been documented over a wide geographic area. To test hypotheses concerning the detailed mechanism of this displacement, an experimental system was developed to follow populations of geckos in a duplicated, controlled environment that closely approximates the natural arena for the competitive interaction. Asymmetric competition occurred only in the presence of light, which attracts a dense concentration of insect food sources. The mechanism of competition was partly due to the behavioral dominance of the larger sexual species over the smaller asexual species in areas near the concentrated food. However, this behavior resulted from an avoidance response of subordinate asexuals rather than overt aggression by the sexual species.
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              The Evolution of Reptilian Social Behavior


                Author and article information

                Role: ND
                Revista de Biología Tropical
                Rev. biol. trop
                Universidad de Costa Rica (San José )
                December 2006
                : 54
                : 4
                : 1125-1130
                [1 ] Ecuador Ecuador
                Product Information: website
                Biodiversity Conservation


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