. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 588 A. Machado. A. Martín & López-Jurado. Fig. 1. The '"Roque Chico" of Salmor (El Hierro), type locality of the now extinct Gal- loria simonyi Photo A. Machado. The Lizard of Salmor. G. simonyi (Steind.), is extinct as confirmed during August 19S4. A further record of G. simonyi on the Roque de Fuera (Anaga, Tenerife) given by Báez ¿c Bravo (1983) is probably an error (Martin 1985). All populations inhabiting small islets or rocks offshore have t
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 588 A. Machado. A. Martín & López-Jurado. Fig. 1. The '"Roque Chico" of Salmor (El Hierro), type locality of the now extinct Gal- loria simonyi Photo A. Machado. The Lizard of Salmor. G. simonyi (Steind.), is extinct as confirmed during August 19S4. A further record of G. simonyi on the Roque de Fuera (Anaga, Tenerife) given by Báez ¿c Bravo (1983) is probably an error (Martin 1985). All populations inhabiting small islets or rocks offshore have to be classified as "rare", because of their small size, but deserve extra consideration when those populations have a special taxonomic status, such as Galloria gallori insulana- gae Martin. 1985 (endemic to the Roque de Fuera). In this particular case, the present day threat is collecting and therefore the taxon was placed under cate- gory 'vulnerable'. Threat analysis Habitat reduction Since man arrived in the Canary Islands (not previous to 2000 Castro Alfin 1983: 83) many changes have taken place in the insular environment, especially with the development of modern civilization. In general terms, one may con- clude that a group of large size reptiles have suffered a strong decline if not extinction (Kämmer 1982. Machado 1985). However, most of the remaining reptilian fauna has gained an important advantage as the available habitat has increased due to deforestation and increa- sed aridity in vast sectors of the islands (vide Machado 1976, Castro Alfín 1983). Other favourable factors include the establishment of fruit monocultures (vine- yards, Opuntia. tomatoes, bananas, etc) and the extensive building of stone fences and walls (fig. 2). In general, habitat reduction is not a real problem for Canarian reptiles today. As suggested above, many lizards and geckos adapt successfully to agricultural. Please note that these images are extracted from scanned
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