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. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Conservation status of Canary reptiles 589. Fig. 2. The cultivated areas in the intermediate zones of some islands may represent a habitat expansion for thermophilic reptiles. Photo I. Sánchez. systems, and they may even increase, as sometimes occurs with other groups of vertebrates (v. habitat expansion in birds, Volsoe 1955). Nevertheless, some special cases are worth mentioning. Hemidactylus established itself in the Barranco de Santos in the surroundings of the

. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Conservation status of Canary reptiles 589. Fig. 2. The cultivated areas in the intermediate zones of some islands may represent a habitat expansion for thermophilic reptiles. Photo I. Sánchez. systems, and they may even increase, as sometimes occurs with other groups of vertebrates (v. habitat expansion in birds, Volsoe 1955). Nevertheless, some special cases are worth mentioning. Hemidactylus established itself in the Barranco de Santos in the surroundings of the  Stock Photo
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. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Conservation status of Canary reptiles 589. Fig. 2. The cultivated areas in the intermediate zones of some islands may represent a habitat expansion for thermophilic reptiles. Photo I. Sánchez. systems, and they may even increase, as sometimes occurs with other groups of vertebrates (v. habitat expansion in birds, Volsoe 1955). Nevertheless, some special cases are worth mentioning. Hemidactylus established itself in the Barranco de Santos in the surroundings of the municipal market of Santa Cruz (Baez 1979) but it could be threatened if the works of re-development and canalization of the ravine (= barranco) con- tinue. The Gran Canarian population of Gallotia atlántica^ is restricted to a small area of 2.5 x 1 km, and it is possible that this area may become urbanized. The small Roque del Este, 11 km off Lanzarote, was used as a target by Spa- nish Navy and Airforce (see footnote 2) till the sixties. The Defense Depart- ment was made aware that the largest Spanish colony of Falco eleonorae breeds there. The bombing was subsequently stopped, but there is no guarantee that it will not be resumed. Killing, trapping and biocides Country youths amuse themselves by 'fishing' or killing lizards. Catching is done with the help of a long 'balango'5) (= Avena barbata Pott, ex Link) whose stem- tip is transformed into a lasso noose. In addition, catapults, gummy-guns and modern air-rifles, — illegally — are still used, with lizards and birds being their 4) Barquín & Martín (1982) consider it as possibly introduced. On the other hand, Gallotia stehlini has been recently observed in Fuerteventura (Tiscamanita, F. Domínguez, 1984 pers. comm.) asso- ciated with cane-bundles brought for use in tomato-fields from Gran Canaria. 5) The same practice is done in Madeira, and called 'balanco' (Sarmentó, A.A., 1984: Vertebrados da Madeira, vol. 1