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Characiformes (Characins) >
Stevardiidae (Stevardiids) > Diapominae
Etymology: Bryconamericus: Greek, bryko = to bite + America, latinized (Ref. 45335); macarenae: Named for the Macarena Mountain range of Colombia, where the type series was collected.
Окружающая среда: среда / климатическая зона / пределы глубины / диапазон распространения
экология
; пресноводный донно-пелагический; pH range: 6.1 - 7.1. Tropical
South America: Güejar River basin, Macarene Mountain range, Orinoco system in Meta, Colombia.
Размер / Вес / Возраст
половая зрелость: Lm ? range ? - ? cm
Max length : 4.7 cm SL самец/пол неопределен; (Ref. 86277)
Краткое описание
определительные ключи | морфология | морфометрия
членистые (мягкие) лучи спинного плавника (общее число) : 10 - 11; позвонки: 36 - 37. Distinguished from congeners by having the following characters: incomplete lateral line, except Bryconamericus delta; anal fin with four or fewer unbranched rays; a short and thickened extrascapular bone which lacks or has only a reduced apophysis on its posterior tip, and only a few perforations by the latero-sensory canal; and live coloration. Differs from those that occur in the same basin: from Bryconamericus alpha by having 5 or 6 lateral teeth on the dentary (vs. 4), from Bryconamericus cristiani by the arrangement of the teeth in the outer premaxillary row in straight line (vs. zigzag), from Bryconamericus cismontanus and Bryconamericus loisae by its anal fin with 19-25 branched rays (vs. 13-18 and 26-30, respectively) (Ref. 86277).
Body shape (shape guide): elongated.
Found along shore over sandy substrates in the mainstream of rivers, as well as tributaries with flow. The water is tea-colored with transparency usually moderate to high, pH usually around neutral (6.07-7.06), and high oxygen concentration (5.7 mg/l- 7.1 mg/l) as well as oxygen saturation (50.5% - 90.5%). Occurs sympatrically with Bryconamericus alpha, Bryconamericus cismontanus and Bryconamericus loisae (Ref. 86277).
Жизненный цикл и брачное поведение
половая зрелость | размножение | нерест | икра | Плодовитость | личинки
Román-Valencia, C., C.A. Garcia-Alzate, R.I. Ruiz-C. and D.C. Taphorn, 2010. Bryconamericus macarenae n. sp. (Characiformes, Characidae) from the Güejar River, Macarena mountain range, Colombia. Animal Biodiversity and Conservation 33(2):195-203. (Ref. 86277)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-2 (Global))
Угроза для людей
Harmless
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Оценки, основанные на моделях
Индекс филогенетического разнообразия (ссылка
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00355 - 0.02043), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Трофический уровень (ссылка
69278): 2.7 ±0.3 se; based on size and trophs of closest relatives
Уязвимость рыбной ловли (Ref.
59153): Low vulnerability (10 of 100).
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