| nagana |
"sleeping sickness" a protozoal disease transmitted by tseste flies causing fever and anaemia in cattle, wildlife tend to be carriers |
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| native species |
a species that has always been found (endemic) to a specific area |
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| natural licks |
a naturally formed mineral rich reef in soil, usually with a high salt content |
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| natural selection |
survival of the offspring of the fittest |
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| nebula |
Mass of dust and gas in Space |
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| necropsy |
an autopsy |
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| necrosis |
The dying off of tissue, associated with injury or envenomation |
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| nena |
Continent consisting of what are today the
Baltic, Ukraine, Europe, Antarctica, Greenland
and a portion of North America, which is
believed to have formed between 1 600 and
1 300 million years ago |
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| neosporosis |
a protozoal disease similar to toxoplasmosis, but differs in that dogs not cats form part of its life cycle |
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| nephridium |
A tubular excretory organ in many invertebrates, such as mollusks and earthworms.
The excretory organ of a vertebrate embryo from which the kidney develops. |
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| nestling |
a newly hatched chick (bird) that is unable to leave the nest yet |
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| nett energy |
amount of energy available to the animal for growth, lactation, cellular metabolism etc. |
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| neurotoxic |
a type of venom that acts on the central nervous system associated with cardio-vascular distress and collapse |
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| niche (ecological) |
a very specific set of conditions within a habitat, specifically suited to the requirements of a single species |
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| nocturnal |
organisms that are most active at night |
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| nomadic |
an animal that moves from one location to the next frequently |
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| nomenclature |
The process of assigning names to new species as they are discovered. |
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| non-consumptive use of game |
ecotourism, photographic safaris |
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| npn |
non-proteinaceous nitrogen. |
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| nucellus |
Tissue in a plant seed that comprises the
chief part in which the embryo sac develops,
e.g. the edible part of a peanut |
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| nutrient metabolism heat |
heat produced throught the metabolic process, causing a loss of energy |
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