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A xerocole (from Greek xēros / ˈ z ɪ r oʊ s / 'dry' and Latin col(ere) 'to inhabit'), [2] [3] [4] is a general term referring to any animal that is adapted to live in a desert. The main challenges xerocoles must overcome are lack of water and excessive heat. To conserve water they avoid evaporation and concentrate excretions (i.e. urine and ...
Hoarding food for the long, cold winter. Adequate food resources and energy reserves are essential for an animal’s success and survival but winter food supplies and energy reserves are critical ...
Secondary aquatic adaptations tend to develop in early speciation as the animal ventures into water in order to find available food. As successive generations spend more time in the water, natural selection causes the acquisition of more adaptations. Animals of later generations may spend most their life in the water, coming ashore for mating.
A well-known example of a specialist animal is the monophagous koala, which subsists almost entirely on eucalyptus leaves. The raccoon is a generalist, because it has a natural range that includes most of North and Central America, and it is omnivorous, eating berries , insects such as butterflies, eggs, and various small animals.
Ponds also support larger mammals including water shrew and water vole. Badger setts are commonly found in pond banks where the ground slopes, [5] and other mammals such as foxes and domestic cattle and horses use ponds as a drinking water supply. All these animals and birds can also be vectors for pond-dwelling organisms. [citation needed]
Food sources are limited and localized. The lack of sunlight inhibits photosynthetic processes, so food comes only from epigean environment (through percolating water, gravity, or passive transport by animals). An exception are caves like the Movile Cave, where chemosynthesis forms the foundation of the food chain
The management of issues regarding animal genetic resources on the global level is addressed by the Commission on Genetic Resources for Food and Agriculture (CGRFA), which is a body of FAO. In May 1997, The CGRFA established an Intergovernmental Technical Working Group on Animal Genetic Resources for Food and Agriculture (ITWG-AnGR). [ 31 ]
The goal of fisheries management is to produce sustainable biological, environmental and socioeconomic benefits from renewable aquatic resources. Wild fisheries are classified as renewable when the organisms of interest (e.g., fish , shellfish , amphibians , reptiles and marine mammals ) produce an annual biological surplus that with judicious ...