Alburnus istanbulensis
Alburnus istanbulensis | ||||||||||||
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Alburnus istanbulensis | ||||||||||||
( Battalgil , 1941) |
Alburnus istanbulensis is a species of freshwater fish from the carp family . It was originally considered a subspecies of the Mairenke ( Alburnus chalcoides ) and occurs in Turkey .
features
Alburnus istanbulensis reaches a standard length of 226 millimeters. The number of scales on the lateral line organ is 60 to 68. There are 13 to 15½ branched anal fin rays. The origin of the anal fin rays was ½ to 1 ½ scales behind the base of the last dorsal fin ray. The base of the paired fins is translucent or gray in the spawning females (Rognern). The number of gill traps is 24 to 35. The length of the gill traps at the angle of the upper and lower links of the first gill arch is 30 to 55 percent of the opposed gill filaments . The ventral keel shows eight to twelve scales directly in front of the anus.
Occurrence
The distribution area extends from Karasu in Eastern Thrace on the Marmara Sea to Papuç on the Black Sea in Turkey . Well-known sites are Lake Sapanca, Lake Durusu and the Kâathane, Darboğaz and Yıldız rivers on the Bosporus .
Habitat and way of life
Alburnus istanbulensis lives in flowing and standing waters. During the spawning season, the species migrates to the upper reaches of the tributaries. The eggs are laid in rapids with strong currents on the gravel bottom. Foraging is near the surface in the lower reaches of rivers.
literature
- Maurice Kottelat & Jörg Freyhof: Handbook of European Freshwater Fishes . 2007, ISBN 978-2-8399-0298-4 .
- Müfit Özuluğ: The fish fauna of the Durusu Lake Basin (İstanbul-Turkey). 2008. IUFS Journal of Biology. 67 (1): p. 73-79. Istanbul University, Faculty of Science, Department of Biology
- Müfit Özuluğ & Jörg Freyhof: Rediagnosis of four species of Alburnus from Turkey and description of two new species (Teleostei: Cyprinidae) . 2007. Ichthyological Exploration of Freshwaters. Vol. 18, No. 3, pp. 233-246
Web link
- Alburnus istanbulensis inthe IUCN 2013 Red List of Threatened Species . Posted by: Freyhof, J. & Kottelat, M., 2008. Accessed December 14, 2013.