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Characiformes (Characins) >
Characidae (Characins; tetras) > Stevardiinae
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.
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
; آب شيرين موجوداتی که در محدوده وسیعی از آبهای آزاد از نزدیک بستر و یا روی کف بستر، در قسمت های میان آبی تا سطح آب و در برخی گونه ها با قابلیت پرواز، زندگی و تغذیه می کنند.; pH range: 6.1 - 7.1. Tropical
South America: Güejar River basin, Macarene Mountain range, Orinoco system in Meta, Colombia.
Size / Weight / سن
Maturity: Lm ? range ? - ? cm
Max length : 4.7 cm SL جنس نر / بدون خواص جنسي; (Ref. 86277)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
شعاع نرم باله پشتي (کل) : 10 - 11; مهره ها: 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).
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).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
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)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-2)
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
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=0.00955 (0.00407 - 0.02241), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.7 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
