Striped eagle ray
| Striped eagle ray | ||||||||||||
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Striped eagle ray ( Aetomylaeus bovinus ) |
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| Aetomylaeus bovinus | ||||||||||||
| ( Saint-Hilaire , 1817) |
The striped eagle ray ( Aetomylaeus bovinus , syn .: Pteromylaeus bovinus ) is a species of ray that occurs near the coast in the eastern Atlantic at depths of 10 to 150 meters. The exact distribution area extends from Madeira via Portugal , Morocco and the Canary Islands to South Africa , there goes around the Cape of Good Hope to southern Mozambique and thus reaches the extreme southwest of the Indian Ocean . It also occurs in the Mediterranean , where it is now rare.
features
The striped eagle ray with its long, whip-like tail reaches a maximum length of 2.50 meters and a maximum weight of 83 kg, but usually stays at a length of 1.50 meters. Its long, flattened and rounded snout is vaguely reminiscent of a duck's bill, which is why it is often called a duck-billed ray . The upper and lower jaws are covered with seven rows of flat teeth. The head is large, the wing-like, large pectoral fins end in rounded tips. Striped eagle rays are green-brown to light brown on the upper side with 7 to 8, more rarely 9 light blue-gray stripes. The ventral side is white. The head, torso and pectoral fins create a diamond-like body profile. A caudal fin is missing. While the primitive guitar fish , as well as the sawfish and the jitter Roche-like move around like most sharks by strain snaking of the body and the tail fin and the genuine rays get around by undulating movements of their large pectoral fins, Striped strike eagle rays as all the other eagle rays like birds with their wings with the enlarged pectoral fins.
Way of life
The striped eagle ray lives alone near the coast, sometimes in small groups. It feeds mainly on bottom-dwelling crustaceans and molluscs . Like all eagle rays, it is ovoviviparous . The three to seven young rays are born in autumn.
literature
- Hans A. Baensch / Robert A Patzner: Mergus Sea Water Atlas Volume 6, Non-Perciformes (Non-Perciformes) , Mergus-Verlag, Melle, 1998, ISBN 3-88244-116-X
Web links
- Striped eagle ray on Fishbase.org (English)
- Aetomylaeus bovinus inthe IUCN Red List of Threatened Species 2013.1. Posted by: Kyne, PM, Ishihara, H, Dudley, SFJ & White, WT, 2006. Retrieved November 3, 2013.