GYMNURA MICRURA PDF

Gymnura micrura. Bloch & Schneider, Synonyms. Aetoplatea Valenciennes in Müller & Henle, ; Phanerocephalus Gratzianov, ; Pteroplatea Müller & Henle, The butterfly rays are the rays forming the genus Gymnura and the family Gymnuridae. Gymnura micrura. This diamond-shaped ray is much wider than it is long, usually 3 to 4 feet wide, and its short tail lacks the ray’s usual spine. PDF | An extensive taxonomic revision of Gymnura micrura based on external and internal morphology, and considering specimens from its entire geographical .

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The front edges of the disk are concave.

IUCN Red List of Threatened Species

Importance to Humans Smooth butterfly rays are caught in minor fisheries. Rays of the World. Biology of Sharks and Their Relatives. Therefore it represents little danger to humans.

Females of the northwestern Atlantic population pup when 25 inches 65 cm wide, and probably at smaller lengths.

Species of Gymnura in FishBase. Views Read Edit View history. This is a small ray that does not possess a spine. The ventral surface is white. They tend to gymnuraa countershading to blend in with the bottom of their environments in order to hide from predators and to catch prey.

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Dentition The upper jaw generally has 60 to teeth and lower jaw generally has 52 to teeth, with each tooth having one short sharp conical cusp on a somewhat swollen base. Bloch and Schneider first described the smooth butterfly ray in Biology Smooth butterfly ray: Entered by Froese, Rainer.

Native range All suitable habitat Point map Year The tail has low dorsal and ventral fin folds and three to four dark crossbars. The body of butterfly rays is flattened and surrounded by an extremely broad disc formed by the pectoral finswhich merge in front of the head. Lower surface white Ref.

The great hammerhead specializes in feeding on butterfly rays and is their main predator in some areas. The genus Gymnura of the currently accepted scientific name is derived from the Greek word gymnos meaning naked.

Smooth butterfly ray

This map was computer-generated and has not yet been reviewed. Coloration The dorsal surface of this ray is gray, brown or light green, dotted and vermiculated with paler and darker spots. Food Habits Feeds on fish and invertebrates, more specifically: These are broad diamond-shaped rays with gymunra short tail that has low dorsal and ventral fin folds.

Exhibit ovoviparity aplacental viviparitywith embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures Ref.

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Broad, diamond-shaped ray with a very short tail lacking a dorsal spine Ref. Geographical Distribution World distribution map for the smooth butterfly ray The smooth butterfly ray is found in the western and eastern Atlantic Ocean and in the Gulf of Mexico. Synonyms for Gymnura micrura include Pteroplatea micrura, Raja micrura and Gymnura micura.

The smooth butterfly ray prefers neritic waters of the continental shelf and is usually found on soft bottoms. Journal of Fish Biology. This species is known to enter brackish estuaries or hyper-saline lagoons. Eight to nine rows of teeth function simultaneously. Butterfly rays Smooth butterfly ray G. Uses authors parameter Articles with ‘species’ microformats Taxonomy articles created by Polbot. Journal of Applied Ichthyology. Life cycle and mating behavior Maturity Reproduction Spawning Mkcrura Fecundity Larvae Exhibit ovoviparity aplacental viviparitywith embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption gymnuga uterine fluid enriched with mucus, fat or protein through specialised structures Ref.