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); epikarsticus: The specific name makes reference to the type of aquifer where the species occurs.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶; ? - 25°C (Ref. 55401)
South America: single set of rimstone dams in São Mateus Cave in Brazil.
南美洲: 在巴西的 Sao Mateus 洞穴的 rimstone 水壩的單一組。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 3.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 55401)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 11; 臀鰭軟條: 8; 脊椎骨: 36. Distinguished from its epigean and cave congeners by the combination of the following characters: small size (max. 3.4 cm SL); the higher degree of reduction in body pigmentation and in eye size, 2.0-2.1% HL; supraoccipital fontanel very reduced or absent; base and distal extremity of laminar surface of urohyal with similar widths, dorsal process short; posterior process of palatine as long as palatine length, medial concavity slightly rounded; maxilla with discrete medial-posterior projection; fronto-lachrymal 2/3 length of maxilla, anteriorly and posteriorly pointed; opercle with 9 odontodes and interopercle with 20-21 odontodes; 5 pairs of ribs (also observed in a juvenile of I. bambui); caudal skeleton with upper hypural plate triangular and lower one rectangular, neural spine or preural centrum with acute extremity, dorsal procurrent rays 14 and ventral 10 (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 3.4 公分 SL); 在身體顏色與眼睛大小中的減少的較高的程度,2.0-2.1% HL; 非常退化或不存在的上枕骨囟門; 用相似的寬度，背部的突起短的基底與尾舌骨的 laminar 表面的末梢部末端; 顎骨的在後部突起長達上顎的長度, 中間的凹窪略圓的; 用不連續的中間-在後部的突出顎骨; fronto-淚骨 2/3 顎骨的長度, 前面地與在後部尖; 用 20-21個齒鰓蓋有 9個齒與中鰓蓋; 肋骨的 5 對;(也在一個 I. bambui 的稚魚觀察) 具有上面的尾下碟尾部的骨骼三角形而低的矩形, 用尖銳的末端，背部的前流鰭條 14 與腹面 10 的髓棘或 preural 椎體.(參考文獻 55401)
描述: 背鰭有 11 鰭條;(3 不分枝的,8個分枝) 臀鰭有 8個鰭條;(2 不分枝的,6個分枝) 胸鰭有 8個鰭條, 第一個鰭條比較長的﹐不分枝的與絲狀的; 腹鰭有 5個鰭條, 第一個鰭條不分枝的.(參考文獻 55401)
Occurs in pools in a set of rimstone dams (wall-shaped barriers of calcite, aragonite or other chemical deposits that impound water pools), 10-30 cm deep and with rocky bottom (Ref. 55401). A solitary species, swimming on the bottom, along the walls and sometimes at the surface of the pools (Ref. 55401).
出現於在一組 rimstone 水壩 (牆壁-鈣的形狀障礙, aragonite 或者關在欄中的其他化學沈積層水水池) 中的水池,10-30 公分深而且有岩石的底部.(參考文獻 55401) 一種獨居性種, 在底部上游泳, 沿著牆壁與有時在水表面水池.(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: 在巴西的 Sao Mateus 洞穴的 rimstone 水壩的單一組。
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)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
極危 (CR) (B2ab(iii)); Date assessed: 18 May 2022
人類使用
漁業: 沒有興趣
工具
特別的報告
下載 XML
網路資源
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=0.00661 (0.00279 - 0.01564), 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).
