Issue
A better resolved species level taxonomy and more detailed morphological examination of peri-Mediterranean and African 'macrostigma' trouts is needed and feasible.
Environment: milieu / climate zone / depth range / distribution range
экология
морской; пресноводный; солоноватоводный донно-пелагический; анадромный (Ref. 51243). Subtropical
Africa: restricted to Algeria (Ref. 13696, 55619, 59043, 87713), also in Mediterranean basins of Morocco (Ref. 107622). The other peri-Mediterranean populations referred to as Salmo macrostigma belong to several species (Ref. 87713).
Length at first maturity / Size / Вес / Возраст
Maturity: Lm ?, range 18 - ? cm
Max length : 60.0 cm TL самец/пол неопределен; (Ref. 3562)
Краткое описание
определительные ключи | морфология | морфометрия
членистые (мягкие) лучи спинного плавника (общее число) : 13 - 15; членистые (мягкие) лучи анального плавника: 11 - 13; позвонки: 57 - 58. Diagnosis: dorsal fin slightly higher than long; located more posteriorly than in other Salmo species; caudal fin more forked than other Salmo species; 8-12 round, black spots (parr marks) on sides (Ref. 4904, 52923, 94703, 94704), which are more prominent in juveniles and are retained in adults (Ref. 55619). Low gill raker count and dark spots on sides distinguish it from S. akairos; it differs from S. trutta in slightly lower vertebral count and pyloric caeca counts, and having the parr marks more conspicuous; 10-11 anal fin pterygiophores (Ref. 55619). 14-17 small scales between adipose fin and lateral line (Ref. 1878, 52923, 55619).
Possesses a particular diet due to poor insular ichthyologic fauna; its food consists mainly of tadpoles, insects and urodela (Ref. 11941).
Behnke, R., 1984. Salmonidae. p. 125. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 3562)
Статус Красного Списка МСОП (Ref. 130435: Version 2024-1)
Угроза для людей
Harmless
Использование человеком
рыболовство: потенциальный рыбохозяйственный объект
дополнительная информация
инструменты
Специальные отчеты
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00655 - 0.01458), b=3.02 (2.90 - 3.14), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.61 se; based on food items.
устойчивость к внешним воздействиям (Ref.
120179): средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (Fec = 2340).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).