Sudis
| Sudis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Sudidae | ||||||||||||
| Regan , 1911 | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Sudis | ||||||||||||
| Rafinesque , 1810 |
Sudis ( Latin : Sudis = pike) is a genus of lizard fish relatives (Aulopiformes). Of the two species of the genus, Sudis atrox is known to have been caught in the western Atlantic from the USA to Brazil, from the eastern Atlantic near the equator, from the eastern Pacific off the coast of Chile and near Hawaii , while Sudis hyalina is between 50 ° in all oceans N and 40 ° S and alsooccursin the Mediterranean .
features
Sudis species are elongated fish with a pike-like body, a large head and a deep cleft mouth. Sudis atrox becomes a maximum of 12.5 cm long, the most common animals are 7.5 cm in length. For Sudis hyalina a length of 40 cm is given and a maximum length of one meter is assumed. The estimate is based on large, broken teeth stuck in submarine cables and assigned to the species. Characteristic feature of the genus are strongly elongated pectoral fins , whose longest fin ray is significantly longer than the base of the anal fin . The lower jaw teeth are long, laterally flattened and have serrated edges. Only the gill cover is scaly.
Systematics
In most sources, Sudis is assigned to the family of the Barracudinas (Paralepididae), in Fiedler to a subfamily Sudinae. In a study on the systematics of lizardfish relatives, the American ichthyologist Matthew P. Davis establishes a sister group relationship between Sudis and a clade consisting of the barracudinas and the Alepisauridae and assigns the genus to the monotypical family Sudidae within the subordination Alepisauroidei and the superfamily Alepisauroidea.
species
- Sudis atrox Rofen, 1963 .
- Sudis hyalina Rafinesque , 1810 .
Way of life
The Sudis species live epipelagic to bathypelagic at depths of 30 to 2250 meters. They are carnivorous and lay eggs. The act of spawning is likely to take place near the surface of the sea. The planktonic larvae are mainly in the upper 250 meters of the water column. The Sudis species, like many other lizardfish relatives living in the deep sea, are simultaneous hermaphrodites , that is, they have functional female and male sexual organs at the same time.
literature
- Kurt Fiedler: Textbook of Special Zoology, Volume II, Part 2: Fish . Gustav Fischer Verlag Jena, 1991, page 304, ISBN 3-334-00339-6
- W. Fischer, G. Bianchi and WB Scott: FAO Species Identification Guide for Fishery Purposes. Eastern central Atlantic. Rome, 1981
Individual evidence
- ^ Matthew P. Davis: Evolutionary relationships of the Aulopiformes (Euteleostei: Cyclosquamata): a molecular and total evidence approach. in JS Nelson, H.-P. Schultze & MVH Wilson (Eds.): Origin and Phylogenetic Interrelationships of Teleosts. Publishing house Dr. Friedrich Pfeil, Munich, Germany - ISBN 978-3-89937-107-9
- ↑ Matthew P. Davis, Christopher Fielitz: Estimating divergence times of lizardfishes and their allies (Euteleostei: Aulopiformes) and the timing of deep-sea adaptations. Molecular Phylogenetics and Evolution, 57 (2010) 1194-1208, doi : 10.1016 / j.ympev.2010.09.003
Web links
- Sudis on Fishbase.org (English)