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: Ituglanis: Greek, itys, ityos = circle + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335); ramiroi: The specific name honors Ramiro Hilario dos Santos, local inhabitant and guide in Terra Ronca State Park, who discovered this species and an enthusiastic supporter of the protection of caves in the area..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性; pH range: 6.8 - 7.5; 深度上下限 0 - ? m (Ref. 55401). 熱帶; ? - 23°C (Ref. 55401)
South America: pool formed by infiltration of water in the São Bernardo Cave in Brazil.
南美洲: 水池在巴西的 Sao Bernardo 洞穴由水的滲入形成了。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 3.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 55401)
簡短描述
型態特徵 | 形態測量圖
背的軟條 (總數): 9; 臀鰭軟條: 6; 脊椎骨: 36. Distinguished from its epigean and cave congeners by the combination of the following characters: small size (max. 3.13 cm SL); reduced body pigmentation, with very small chromatophores. Dorsal region of head darker than remaining body parts; small integument fold anterior to dorsal fin and prominent posterior to dorsal fin; eye size intermediate between I. bambui and I. epikarsticus, 3.7-4.7% HL; nine pectoral-fin rays; base of laminar surface of urohyal 1.5 times larger than distal extremity, dorsal process long; posterior process of palatine 3/4 of palatine length, with medial concavity slightly rounded; maxilla straight, without medial-posterior projection; fronto-lachrymal as long as maxilla, posteriorly pointed; opercle with 12-13 odontodes, interopercle with 24-25 odontodes; caudal skeleton with the upper hypural plate trapezoidal and the lower trapezoidal to rectangular, neural spine of preural centrum with acute extremity, dorsal procurrent rays 16 and ventral 12 (Ref. 55401).
與它的區分了地面上的與洞穴同類藉由下列特徵的組合: 體型小 (最大的 3.13 公分 SL); 縮小的身體顏色了, 具有非常小的色素胞。 頭部的背部區域比剩餘的身體部份顏色更深; 小的體表摺層位於背鰭前與突出的在背鰭後面; 介於 I. bambui 與 I. epikarsticus 之間的眼睛大小,3.7-4.7% HL; 九個胸鰭鰭條; 尾舌骨 1.5 倍大於的 laminar 表面的基底末梢部的末端, 背部的突起長的; 顎骨上顎長度中的 3/4 的在後部突起, 與中間的凹窪略圓的; 顎骨直線, 沒有中間-在後部的突出; fronto-淚骨長達顎骨, 在後部尖; 用 24-25個齒鰓蓋有 12-13個齒中鰓蓋; 具有上面的尾下碟尾部的骨骼梯形而下面的梯形到矩形的, 用尖銳的末端，背部的前流鰭條 16 與腹面 12 的 preural 椎體的髓棘.(參考文獻 55401)
描述: 背鰭有 9 鰭條;(3 不分枝的,6個分枝) 臀鰭有 6個鰭條;(2 不分枝的,4個分枝) 胸鰭有 9個鰭條, 第一個鰭條不分枝而絲狀的; 腹鰭有 5個鰭條, 第一個鰭條不分枝的.(參考文獻 55401)
Occurs in a side pool five meters above the main stream level, formed by water percolating from the rock. A solitary species, swimming on the bottom and displaying rare events of surface swimming (Ref. 55401). Exhibits weak cryptobiotic habits, sometimes hiding under boulders, but not burying in the silt (Ref. 55401).
出現於被由過濾從岩石的水形成的一個旁的水池五公尺上方主要的水流水平。 一種獨居性種, 在底部上游泳而且顯示表面游泳的稀有事件.(參考文獻 55401) 顯示弱的隱密性的生物習慣, 有時在大圓石下面藏, 但是不是在淤泥中的埋.(參考文獻 55401)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 水池在巴西的 Sao Bernardo 洞穴由水的滲入形成了。
Bichuette, M.E. and E. Trajano, 2004. Three new subterranean species of Ituglanis from central Brazil (Siluriformes: Trichomycteridae). Ichthyol. Explor. Freshwat. 15(3):243-256. (Ref. 55401)
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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=0.00661 (0.00282 - 0.01550), b=2.99 (2.79 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
