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Results for “uv”

Ichthyological terms, not general ones.

Species 1Articles 0Glossary 13

  • uv

    Abbreviation of ultraviolet.

    Used in 1 profile

  • alluvial

    Refers to sediment deposited by flowing water.

    Used in 2 profiles

  • fluvial

    Of, relating to, or inhabiting a river or river system.

    Used in 19 profiles

  • juvenile

    Not yet fully mature though mostly similar in form to an adult specimen; young.

    Used in 400 profiles

  • anastomosis

    The connection of separate parts of a branching system to form a network. Sometimes used to describe the process by which a relatively regular, e.g. striped, patterning in juveniles of certain fishes breaks up as they mature.

    Used in 6 profiles

  • aplacental viviparity

    Also known as ovoviviparity. Method of reproduction employed by certain fishes in which the eggs are fertilised and develop inside the female but there is no placental connection. The juveniles are free-swimming and able to feed as soon as they leave the female's body.

  • larva

    Immature free-living juvenile form of an organism that undergoes metamorphosis before assuming the adult form.

  • neoteny

    Form of paedomorphism characterised by retention of juvenile features in an adult individual via slowed or delayed maturation.

  • paedomorphism

    Phylogenetic state in which juvenile or larval characters are retained in and throughout the adult stage. May arise via neoteny or progenesis.

  • progenesis

    Form of paedomorphism characterised by retention of juvenile features in an adult individual via accelerated maturation.

  • progenetic

    Undergoing accelerated sexual maturation, often with associated retention of juvenile features in adults.

    Used in 16 profiles

  • pseudotympanum

    Translucent, triangular area in the humeral region, behind the opercle, without muscle and where the anterior part of the gas bladder is in direct contact with the skin. It is hypothesised to function as a hearing aid in many juvenile characoids and is present in adults of certain species, notably members of the family Cheirodontidae.

    Used in 2 profiles

  • subadult

    An individual that has passed through the juvenile stage but not yet developed all adult characteristics, sexual maturity or size.

    Used in 36 profiles