scholarly journals Možnosti zapojenia žiakov do praktickej ochrany prírody v rámci akcie „Pomoc ropuchám pri jarných migráciách“ na Železnej studienke v Bratislave (1986 – 2015)

Envigogika ◽  
2015 ◽  
Vol 10 (4) ◽  
Author(s):  
Blanka Lehotská ◽  
Alena Magyarics

The paper presents one of the possibilities of the involvement of school children in practical nature conservation. It deals with the conservation issue of migrating amphibians. Based on 30 years of experience in protection of the common toad (Bufo bufo) population nin the Železná studienka locality in Bratislava, it specifies how to involve pupils in particular activities. At the same time it emphasizes the positive impact of school children participation in these activities on their knowledge level and attitude to nature conservation and environment protection. In Slovakia and the Czech Republic the number of sites is recorded where an annual mortality of protected animals is observed. This contribution is a guide and inspiration for teachers to show that pupils can work alongside them tocontribute to changing this situation.

2017 ◽  
Vol 187 ◽  
pp. 48-54 ◽  
Author(s):  
Zsanett Mikó ◽  
János Ujszegi ◽  
Attila Hettyey

1987 ◽  
Vol 8 (1) ◽  
pp. 13-17 ◽  
Author(s):  
S.P. Gittins

AbstractThere was no significant difference between the number of food items obtained by stomach-flushing toads caught in pitfall traps and from the dissection of corpses found on nearby roads. The frequencies of the different food categories were similar using the two methods. 97 % of the toads entering the pond in the spring had not recently fed, whereas 25% of toads leaving the pond had started to feed. Sloughed skin was found in 7% of stomachs. Vegetable matter was found in 15% of stomachs and inorganic matter in 6% of stomachs. The diet of the toad was found to be very varied, and the main food items were beetles, collembolans, millipedes, harvestmen and spiders. The diets of males, females and young toads were very similar, and only slight changes in diet were observed throughout the year. The size of food items ranged from 1 mm to 40 mm with most around 7 mm. There was no significant relationship between the size of the food item and the size of the toad for adult males and females, but there was for juveniles.


1981 ◽  
Vol 2 (3) ◽  
pp. 231-234
Author(s):  
Manfred Verhaagh ◽  
Hartmut Greven

AbstractThe dermis of the common toad (Bufo bufo) contains three types of chromatophores (xanthophores, iridophores, melanophores) characterized by their own specific pigmented granules. Beyond that, chromatophores with mixed populations of granules, i. e. xanthophores and iridophores containing few melanosomes and a type of cromatophore, which has large amounts of melanosomes plus pterinosomes, have been found. Granules occur regularly in xanthophores consisting of a melanosom, which is surrounded by concentric lamellae typical for pterinosomes.


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