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Percopsiformes (Trout-perches, pirate perches and cavefishes) >
Aphredoderidae (Pirate perches)
Etymology: Aphredoderus: Greek, aphod = excrement + Greek, dere = throat, in reference to the unusual postion of the anus (Ref. 45335); sayanus: Named after the naturalist Thomas Say (Ref. 10294).
Eponymy: Thomas Say (1787–1834) was a self-taught American naturalist whose primary interest was entomology. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / пределы глубины / distribution range
экология
; пресноводный демерсальный. Temperate; 5°C - 26°C (Ref. 12468); 46°N - 28°N
North America: Eastern and central United States. Previously, two subspecies were recognized by Boltz & Stauffer 1993 (Ref. 34807): Aphredoderus sayanus sayanus in Atlantic Coast drainages from New York to Georgia; and A. sayanus gibbosus in the Mississippi River, Great Lakes, and western Gulf Coast drainages, with intergrades in Gulf Coast and Atlantic Coast drainages between Mississippi and Georgia.
Size / Вес / Возраст
половая зрелость: Lm ? range ? - ? cm
Max length : 14.0 cm TL самец/пол неопределен; (Ref. 5723); common length : 10.4 cm TL самец/пол неопределен; (Ref. 12193); наибольший возраст (опубликованны данные): 4 годы (Ref. 12193)
Краткое описание
определительные ключи | морфология | морфометрия
Adults usually occur over mud in swamps, vegetated sloughs, ponds, lakes, backwaters, and quiet pools of creeks and small to large rivers (Ref 5723, 10294). Nocturnal feeders. Feed on aquatic insects, small crustaceans, and occasional small fish including their own young (Ref. 10294). Eggs in nests are guarded by both parents (Ref. 205).
Life cycle and mating behavior
половая зрелость | размножение | нерест | икра | Fecundity | личинки
Eggs in nests are guarded by both parents (Ref. 205).
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-1)
Угроза для людей
Harmless
Использование человеком
дополнительная информация
инструменты
Специальные отчеты
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Estimates based on models
Phylogenetic diversity index (ссылка
82804): PD
50 = 0.7502 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00172 - 0.01158), b=3.11 (2.88 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (ссылка
69278): 3.1 ±0.39 se; based on food items.
Generation time: 1.6 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
устойчивость к внешним воздействиям (ссылка
120179): средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (tmax=4; K=0.6).
Fishing Vulnerability (Ref.
59153): Low vulnerability (21 of 100).
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