分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
>
Gymnotiformes (Knifefishes) >
Hypopomidae (Bluntnose knifefishes)
Etymology: Brachyhypopomus: Greek, brachys, eia = short + Greek, hypo = under + Greek, poma, -atos = cover (Ref. 45335); alberti: Named for James S. Albert, American (USA) ichthyologist, collector of part of the type series, for his enormous contributions to the systematic biology of gymnotiform fishes..
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性; pH range: 5.2 - 5.5. Tropical; 22°C - 24°C (Ref. 116763)
South America: upper rio Madeira basin in Brazil and Bolivia.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 11.1 cm TL オス/雌雄の選別がない; (Ref. 116763); 10.0 cm TL (female)
簡単な記述
形態学 | 形態計測学
臀鰭: 172 - 191. Brachyhypopomus alberti is distinguished from other species of the genus Brachyhypopomus by the following combination of characters: absence of depigmented stripe along middorsal region of body (vs. prominent pale uninterrupted middorsal stripe from occipital region to base of caudal filament in B. arrayae, B. beebei, B. belindae, B. gauderio, B. pinnicaudatus, and B. verdii); 20-22 precaudal vertebrae (vs. 15-19 in B. batesi, B. benjamini, B. bennetti, B. bombilla, B. bullocki, B. cunia, B. diazi, B. hendersoni, B. menezesi, B. provenzanoi, B. regani, and B. sullivani); anal fin with 182-202 rays (vs. 226-293 in B. brevirostris); presence of continuous or discontinuous dark vertical or diagonally oriented bands or saddles on body surface dorsal to lateral line, often extending across lateral line into ventral lateral surface (vs. absence of oblique bands or saddles on body surface dorsal to lateral line in B. draco, B. flavipomus, B. jureiae, and B. palenque); 3 bilateral columns of electrocytes at the anal-fin terminus (vs. 4-5 in B. janeiroensis and B. occidentalis (except some populations in Colombia and Venezuela); absence of dark suborbital stripe (vs. presence in B. walteri). It differs from most but not all specimens of B. hamiltoni by having a higher number of pectoral-fin rays 15-16 (mode 16) (vs. 12-15 (mode 13) (only 2 of 18 measured specimens of B. hamiltoni exhibited an overlapping number of pectoral-fin rays with B. alberti). It can be differentiated from B. hamiltoni by the absence of the first of five branchiostegal rays (vs. presence in B. hamiltoni Mago-Leccia) (Ref. 116763).
Facultative air-breathing in the genus (Ref. 126274); The type series was sampled in tropical forest and savanna near Riberalta, Bolivia from small low-conductivity clearwater and blackwater terra firme streams. Found mostly commonly in marginal root mats, and in emergent or submerged aquatic vegetation. Recorded water parameters at the sampling sites included the following: conductivity 5-15 μS/cm, dissolved oxygen 3.0-5.0 mg/l, temperature 22-24°C, and pH 5.2-5.5. Co-inhabits in geographical sympatry and ecological syntopy with the following species occurring in terra firme stream: B. brevirostris, B. sullivani, and B. walteri. In the region of the type locality, it is allotopic with whitewater floodplain species such as B. arrayae, B. bombilla, and B. pinnicaudatus. It co-occurs in geographical sympatry with its sister species B. arrayae, but the species exhibit a noteworthy difference in ecological distribution. B. alberti occupies the low conductivity (ca. 5-15 μScm-1) terra firme forest and savanna streams, while B. arrayae mainly inhabits higher-conductivity whitewater floodplain systems (ca. 150 μScm-1 at the time of sampling). B. alberti was collected together with B. arrayae (and also B. pinnicaudatus) in the lower reaches of terra firme streams, at the ecotone with the río Beni floodplain (Ref. 116763).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Crampton, W.G.R., C.D. de Santana, J.C. Waddell and N.R. Lovejoy, 2017. A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species. Neotrop. ichthyol. 14(4):e150146. (Ref. 116763)
Human uses
より多くの情報
共通名の類義語代謝捕食動物生態毒性繁殖成熟放精卵の集合体生産力卵卵の開発
Age/Size成長体長-重さLength-length体長組成形態計測学形態学幼生幼生の動力補充豊度BRUVS
参考文献水産養殖水産養殖の紹介緊張遺伝子のElectrophoreses遺伝病気行列NutrientsMass conversion
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
用具
特記事項
XMLをダウンロードして下さい
インターネットの情報源
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=0.00380 (0.00145 - 0.00994), b=3.06 (2.83 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
