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fractional spawning

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  • fractional spawning — release of eggs at intervals, usually over several days or weeks. This allows more, smaller and immature eggs to be carried in a limited abdominal cavity space as the intervals enable the smaller eggs time to mature; and once shed, eggs mature at …   Dictionary of ichthyology

  • intermittent spawning — spawning at intervals; see batch or fractional spawner …   Dictionary of ichthyology

  • multiple clutch — fractional spawning (release of eggs at intervals, usually over several days or weeks. This allows more, smaller and immature eggs to be carried in a limited abdominal cavity space as the intervals enable the smaller eggs time to mature; and once …   Dictionary of ichthyology

  • Hypophthalmus — Taxobox name = Hypophthalmus regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Siluriformes familia = Pimelodidae genus = Hypophthalmus genus authority = Cuvier, 1829 binomial = Hypophthalmus edentatus binomial authority = Spix… …   Wikipedia

  • Trophic level — First trophic level The plants in this image, and the algae and phytoplankton in the lake, are primary producers. They take nutrients from the soil or the water, and manufacture their own food by photosynthesis, using energy from the sun. The… …   Wikipedia

  • Maritime history of California — History of California This article is part of a series Timeline …   Wikipedia

  • Coast — For other uses, see Coast (disambiguation). A coastline or seashore is the area where land meets the sea or ocean.[1] A precise line that can be called a coastline cannot be determined due to the dynamic nature of tides. The term coastal zone can …   Wikipedia

  • batch spawner — a fish which sheds eggs more than once through a spawning season rather than within a short period (a fractional spawner) …   Dictionary of ichthyology

  • Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …   Universalium

  • aerospace industry — Introduction       assemblage of manufacturing concerns that deal with vehicular flight within and beyond the Earth s atmosphere. (The term aerospace is derived from the words aeronautics and spaceflight.) The aerospace industry is engaged in the …   Universalium

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