分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes)
毛鼻鯰科 (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); megantoni: The specific name, megantoni, is in reference to Santuario Nacional Machiguenga Megantoni, where the type locality is situated.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性; 深度上下限 0 - 2 m (Ref. 58750). 熱帶; 12°C - 16°C (Ref. 58750)
Trichomycterus megantoni has been collected at several localities from southeastern Perú at
the Santuario Nacional Machiguenga Megantoni: Quebrada Earoto, elevation 2,100 m, Quebrada Matzonzori, elevation 2,200 m, Quebrada Patiti, elevation 2,200 m, and Quebrada Morro Leguia, km 135, in Paucartambo, Cusco. The region is characterized by torrential hydrological conditions associated with abundant summer rains between January and March and by a dry season between May and November (Ref. 58750).
Trichomycterus megantoni 已經被在來自東南方的祕魯的一些地點採集到在
Santuario Nacional Machiguenga Megantoni: 山谷小溪 Earoto, 海拔 2,100 公尺，山谷小溪 Matzonzori, 海拔 2,200 公尺，山谷小溪 Patiti, 海拔 2,200 公尺, 與山谷小溪 Morro Leguia 公里 135, 在 Paucartambo ， Cusco。 區域特徵為奔流的水文學環境伴隨著了豐富的夏天在一月與三月之間下雨與在五月與十一月之間藉著一個乾季.(參考文獻 58750)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 10.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 58750)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Trichomycterus megantoni is readily distinguished from all other members of the subfamily Trichomycterinae from southern South America by having autapomorphic interopercle thickened integument and the presence of foramen frontal-supraoccipital reduced. It is further distinguished from other congeners, with the exception of T. pseudosilvinichthys (Fernández & Vari) and T. yuska (Fernández & Schaefer), by the unique combination of the following features: tip of the pelvic fin when depressed not reaching the anus, premaxillae rectangle, first dorsal fin pterygiophore insertion at or posterior to vertebra 19 to 21,
17 or 19 pairs of ribs on each side, and 37 to 40 vertebrae. T. megantoni can be distinguished from T. yuska and T. pseudosilvinichthys by the presence of a supraorbital canal with pore 3, and an outer tooth row with conic teeth (versus absence pore 3 and distally narrowing incisiform teeth Fernández & Schaefer, 2003; Fernández & Vari, 2004). In addition, the new species is distinguished from T. yuska by head muscles that are not hypertrophied and 17 pairs of ribs on each side (versus head and cheek musculature hypertrophied and 18 or 19 ribs Fernández & Schaefer, 2003); from T. pseudosilvinichthys by the first pectoral fin ray prolonged as thin short filament (versus first pectoral fin ray terminating at the margin of the fin Fernández & Vari, 2004).
Trichomycterus megantoni 是與輕易地區分的來自南美洲南部的亞科 Trichomycterinae 的所有其他成員藉著具有被粗的體表的 autapomorphic 中鰓蓋與那有孔額骨-縮小的上枕骨。 它是進一步與其他的同類，除了 T. pseudosilvinichthys(Fernandez&Vari) 與 T. yuska(Fernandez&Schaefer) ，下列特徵的藉由獨特組合區分: 腹鰭的頂端當扁平的不達到肛門，前頜骨長方形, 第一背鰭支鰭骨嵌入在或者在脊椎骨後面 19 到 21,
在兩邊上的 17 或 19個對肋骨 , 與 37 到 40個脊椎骨。 T. megantoni 能被與 T. yuska 與 T. pseudosilvinichthys 區分藉由用孔 3, 與一個外部的齒列和圓錐的齒有一個眶上管 (對缺乏孔 3 與末梢部地狹窄的鑿狀牙齒 Fernandez&Schaefer, 2003; Fernandez&Vari, 2004). 除此之外，新種被頭部肌肉與 T. yuska 區分在兩邊上那是不肥大的與 17個對肋骨;(對頭部與頰的肌肉組織肥大的與 18 或 19ribs Fernandez & Schaefer, 2003) 從第一個胸鰭鰭條的 T. pseudosilvinichthys 延長如細的短絲狀突起。 (對第一個胸鰭鰭條結束在鰭 Fernandez&Vari 的邊緣, 2004)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Trichomycterus megantoni 已經被在來自東南方的祕魯的一些地點採集到在
Santuario Nacional Machiguenga Megantoni: 山谷小溪 Earoto, 海拔 2,100 公尺，山谷小溪 Matzonzori, 海拔 2,200 公尺，山谷小溪 Patiti, 海拔 2,200 公尺, 與山谷小溪 Morro Leguia 公里 135, 在 Paucartambo ， Cusco。 區域特徵為奔流的水文學環境伴隨著了豐富的夏天在一月與三月之間下雨與在五月與十一月之間藉著一個乾季.(參考文獻 58750)
Fernández, L. and R.Q. Chuquihuamaní, 2007. A new species of Trichomycterus (Siluriformes: Trichomycteridae) from the Andean Cordillera of Perú, with comments on relationships within the genus. Zootaxa 1545:49-57. (Ref. 58750)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 25 April 2014
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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=0.00851 (0.00358 - 0.02025), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
