Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2000.1700.1704Agama agama spinosa]]>HusseinH. K. DarwishA.D.M. 102000310Community structure, microhabitat use, sex ratio and sexual dimorphism were investigated in the lizard, Agama agama spinosa from the north western coast of Egypt. This species is a rock-dwelling and occupy different, but overlapping crevices of rocks and old buildings. All individuals prefer the horizontal crevices on which they can perch in close proximity to the crevices. The proportion of males in the adult sample is 45%. Irrespective of sex, there were 60.2% adults and 39.8% juveniles in the total sample. Generally, the group size ranged from five to eight individuals sharing the same crevice included one adult male at least. Males apparently reach larger body sizes than females and also have larger heads and longer tails. The observed dimorphism in body and head sizes may therefore not necessarily be the result of sexual selection, but could be the result of differential energy allocation by females.]]>Ahmed, A.M.,19821982Anderson, R.A. and L.J. Vitt,199084145157Arnold, E.N.,19871739782Bailey, N.T.J.,19812nd Edn.,Branch, W.R.,1988pp: 241pp: 241Burns, T.A.,1970Sceloporus jarrovi at high altitudes.]]>26916Carothers, J.H.,1984124244254Congdon, J.D., R.E. Ballinger and K.A. Nagy,1979Sceloporus jarrovi (Sauria: Iguanidae).]]>603035Cooper, Jr. W.E. and L.J. Vitt,1987Eumeces laticeps.]]>72321326Cooper, Jr. W.E. and L.J. Vitt,1989133729735Cordes, I.G., P.L.F.N. Mouton and J.H. van Wyk,1995Cordylus niger and Cordylus cordylus.]]>30187196Darevsky, I.S.,1967Harris, V.A.,1964Pages: 174Pages: 174Heatwole, H.,19771977pp: 137-155pp: 137-155Henderson, R.W. and H.S. Fitch,1975Anolis sericeus (Reptilia: Iguanidae) and its syntopic congeners at four localities in Southern Mexico.]]>31459471Hicks, R.A. and R.L. Trivers,1983Anolis valencienni.]]>1983pp: 570-595pp: 570-595Houston, D. and R. Shine,199362737784Huey, R.B.,19821982pp: 25-29pp: 25-29Hussein, H.K.,1994Agama stellio.]]>15405424Hussein, H.K., 2000316780Jacobs, J.,197414413417Jaksic, F.M., H. Nunez and F.P. Ojeda,1980Liolaemus lizards in central Chile.]]>45178181Lemos-Espinal, J.A., R.E. Ballinger, S.S. Saribia and G.R. Smith,1997Sceloporus mucronatus mucronatus in Sierra del Ajusco, Mexico.]]>28126127Marx, H.,1968Pages: 91Pages: 91Michael, M.I., S.I. Dekinesh and A.H. Aly,199288199Moermond, T.C.,197970147167Mouton, P.L.F.N. and J.H. van Wyk,1997467888Powell, H., H. Heatwole and M. Heatwole,1977Leiolopisma guichenoti.]]>5789791Quenette, P.Y.,199011801818Rawlinson, P.A.,1975Leiolopisma (Scincidae: Lygosominae).]]>36115Roberts, G.,19965110771086Ruby, D.E.,1977Sceloporus jarrovi.]]>33322333Ruby, D.E.,1978Sceloporus jarrovi.]]>1978430438Ruby, D.E. and D.I. Baird,1993Sceloporus jarrovi.]]>27100103Ruibal, R. and R. Philibosian,1974Anolis acutus.]]>1974347357Said, K.M. and H.K. Hussein,1992Scincus officinalis and its adaptive significance to Gonadal activity.]]>7115Schoener, T.W.,19771977pp: 35-136pp: 35-136Scott, Jr. N.J., D.E. Wilson, C. Jones and R.M. Andrews,1976107584Shine, R.,198964419464Shine, R.,1990135278283Shine, R.,1991138103122Slatkin, M.,198438622630Toft, C.A.,19851985121Trivers, R.L.,19721972pp: 136-179pp: 136-179Van Wyk, J.H. and P.LF.N. Mouton,1998Pseudocordylus capensis (Sauria: Cordylidae).]]>33156165Vitt, L.J.,1974Urosaurus ornatus (Sauria: Iguanidae).]]>30182183Johnston, G., E. Lanham and M. Bull,1997Egernia stokesii.]]>1997