- المجال: Government
- Number of terms: 30456
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A polygynous mating system where a number of males aggregate at a particular site during the breeding period and engage in courtship behavior, especially displays. Females attracted to the site "select " males for mating and subsequent fertilization of eggs. Once mated, the females usually go elsewhere to lay their eggs or to complete gestation. Lekking behavior (also called arena behavior) has been observed among cuttlefish, fishes, birds, antelope, and insects. Lekking species tend to stay at a single lek throughout a breeding season and to return to the same lek site from breeding period to breeding period.
Industry:Natural environment
A specialized parenchymous tissue in seagrass leaves that has regularly arranged air spaces or lacunae. These internal air spaces serve for flotation and exchange of gasses.
Industry:Natural environment
A type of speciation in which a founder or sink population is isolated from the parent or metapopulation, usually via colonization of some new region.
Industry:Natural environment
An imaginary great circle on the surface of the Earth passing through the north and south poles at right angles to the equator; "all points on the same meridian have the same longitude".
Industry:Natural environment
As pertaining to coral reef ecosystems, a measure of the amount of coral surface area in relation to linear area. For example, branching coral reef habitats will have a higher structural complexity than encrusting coral reef habitats.
Industry:Natural environment
In taxonomy, a name otherwise unavailable or invalid that the International Commission on Zoological Nomenclature, by the use of it Plenary Power, has enabled to be used as a valid name by removal of the known obstacles to such use.
Industry:Natural environment
One of several flat, fringed, and usually bilobed, paired appendages on the ventral surface of the abdominal somites of decapod crustaceans, used for swimming and reproduction.
Industry:Natural environment
Sediment that is composed of the skeletons and shells of marine organisms, primarily plankton.
Industry:Natural environment
