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As of July 2016, the International Union for Conservation of Nature (IUCN) lists 2843 least concern insect species. [1] 47% of all evaluated insect species are listed as least concern.
No subpopulations of insects have been evaluated by the IUCN. For a species to be considered endangered by the IUCN it must meet certain quantitative criteria which are designed to classify taxa facing "a very high risk of extinction".
No subpopulations of insects have been evaluated by the IUCN. Additionally 1702 insect species (28% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status.
The Red List of 2012 was released 19 July 2012 at Rio+20 Earth Summit; [17] nearly 2,000 species were added, [18] with 4 species to the extinct list, 2 to the rediscovered list. [19] The IUCN assessed a total of 63,837 species which revealed 19,817 are threatened with extinction.
The report's co-author, Ellen Butcher, stated one of the guiding principles of the list, "If we take immediate action we can give them a fighting chance for survival. But this requires society to support the moral and ethical position that all species have an inherent right to exist." [1] [5]
Brazil's immense area is subdivided into different ecoregions in several kinds of biomes.Because of the wide variety of habitats in Brazil, from the jungles of the Amazon Rainforest and the Atlantic Forest (which includes Atlantic Coast restingas), to the tropical savanna of the Cerrado, to the xeric shrubland of the Caatinga, to the world's largest wetland area, the Pantanal, there exists a ...
These amphibians usually sequester toxins from animals and plants on which they feed, commonly from poisonous insects or poisonous plants. Except certain salamandrid salamanders that can extrude sharp venom-tipped ribs, [ 1 ] [ 2 ] and two species of frogs with venom-tipped bone spurs on their skulls, amphibians are not known to actively inject ...
Within their native rain forest habitats, the adult beetles, which are nocturnal, forage for fruit at night and hide or burrow within the leaf litter during the day. [11] The adult D. hercules beetles are capable of creating a 'huffing' sound, generated by stridulating their abdomen against their elytra to serve as a warning to predators.