Salvelinus grayi és una espècie de peix de la família dels salmònids i de l'ordre dels salmoniformes.
Fresa durant el mes de novembre en àrees rocalloses i someres.[4]
Viu a zones d'aigües temperades (55°N-54°N, 9°W-7°W).[5]
Es troba a Europa: Irlanda.[5]
Salvelinus grayi és una espècie de peix de la família dels salmònids i de l'ordre dels salmoniformes.
Salvelinus grayi, also called Gray's char[r], Lough Melvin char[r] or freshwater herring,[4][5] is a species of lacustrine char in the family Salmonidae.[6][7]
It is only found in Lough Melvin, Ireland;[8] numbers of fish are declining and the species is considered critically endangered by the International Union for Conservation of Nature.
The describer, Albert Günther, named the fish after his longtime colleague John Edward Gray. The English word "char[r]" is thought to derive from Old Irish ceara/cera meaning "[blood] red,"[9] referring to its pink-red underside.[10][11] This would also connect with its Welsh name torgoch, "red belly."[12]
This species grows to an average length of 10 to 12 in (25 to 30 cm) and a weight of 8 ounces (230 g). Compared to other members of the Salvelinus genus, it has a deeper body that is more laterally compressed, a shorter caudal peduncle and larger scales.[13] It can be distinguished from other char by the whitish spots on upper flank and caudal and dorsal fins.[14]
Salvelinus grayi is benthopelagic, living at 10–30 m (30–100 ft), except during the spawning season. It feeds on water fleas (crustaceans of the order Cladocera). It spawns in November, in shallow rocky areas.[14]
Recorded numbers in Lough Melvin declined from 33 in 1975 and 42 in 1986, to only 12 in 2001, and the species is considered critically endangered. Common rudd introduction and eutrophication are blamed for the decline. In 2003, a plan to relocate some of the fish to a nearby reservoir failed when no fish could be found despite extensive search. Nor was the fish observed to be spawning in its traditional spawning locations. The lake has experienced increasing levels of phosphorus as a result of agricultural activities in its catchment area, and char are notoriously sensitive to phosphorus. Another factor in the fish's decline may be the introduction into the lake of rudd and roach.[1]
Salvelinus grayi, also called Gray's char[r], Lough Melvin char[r] or freshwater herring, is a species of lacustrine char in the family Salmonidae.
It is only found in Lough Melvin, Ireland; numbers of fish are declining and the species is considered critically endangered by the International Union for Conservation of Nature.
class=notpageimage| Location of Lough Melvin
Salvelinus grayi es una especie de pez,[2] de la familia Salmonidae en el orden de los Salmoniformes.
Desova durante el mes de noviembre en áreas rocosas y poco profundas.[3]
Come Cladoceras.
Vive en zonas de aguas templadas (55 ° N-54 ° N, 9 ° W-7 ° W).[4]
Se encuentra en Europa: Irlanda.
Salvelinus grayi es una especie de pez, de la familia Salmonidae en el orden de los Salmoniformes.
Salvelinus grayi Salvelinus generoko animalia da. Arrainen barruko Salmonidae familian sailkatzen da.
Salvelinus grayi Salvelinus generoko animalia da. Arrainen barruko Salmonidae familian sailkatzen da.
Salvelinus grayi is een straalvinnige vissensoort uit de familie van de zalmen (Salmonidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1862 door Günther. Hij vernoemde de vis naar zijn collega John Edward Gray.
De soort komt alleen voor in Lough Melvin in het Ierse graafschap Leitrim. De vis staat op de rode lijst als ernstig bedreigd.
Bronnen, noten en/of referenties格雷紅點鮭，為輻鰭魚綱鮭形目鮭科的其中一種，為溫帶淡水魚，被IUCN列為極危保育類動物，分布於歐洲愛爾蘭Melvin湖流域，深度10-30公尺，體長可達25公分，棲息在底中層水域，生活習性不明。
