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: pedernalensis: Named for the type locality, the Río Pedernal; noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; 深度上下限 0 - 1 m (Ref. 122377).
South America: Argentina.
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 4.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 122377)
簡短描述
型態特徵 | 形態測量圖
背的軟條 (總數): 11; 臀鰭軟條: 10 - 11; 脊椎骨: 39. This species is distinguished from S. mendozensis by the absence of pelvic girdle and fin (vs. present), the number of interopercle odontodes 14-18 (vs. 30-42), the marmorated pigmentation on the body and head (vs. uniformly brown); differs from S. bortayro by the number of branched pectoral–fin rays 7 (vs. 5), the number of total dorsal-fin rays 11 (vs. 9), the anal base fin 10.2-11.7% SL (vs. 8.8-10.2), the supraorbital tendon bone wide (vs. slender), the dark marmorated pigmentation on the body and head (vs. no dark pigmentation in larger individuals), the nasal barbel length 27.3-39.0% SL (vs. 47.1-74.4), the maxillary barbel length 39.5-61.7% SL (vs. 60.5-105.9), the submaxillary barbel length 24.7-41.9% SL (vs. 41.2-57.1), the snout length 40.6-44.4% HL (vs. 35.8-40.5), the number of opercular odontodes 6-8 (vs. 2-4), the number of interopercle
odontodes 14-18 (vs. 9-12); differs from S. huachi by the body depth 10.1-12.6% SL (vs. 12.6-16.5), the supraorbital tendon bone wide (vs. slender), the number of interopercle odontodes 14-18 (vs. 21-28), the number of branchiostegal rays 6 (vs. 7-8), the number of dorsal procurrent caudal-fin rays 14 (vs. 11), the number of ventral procurrent caudal-fin rays 15 (vs. 10); differs from S. gualcamayo by the caudal peduncle length 19.3-21.5% SL (vs. 21.1-23.6), the head depth 9.9-12.2% SL (vs. 9.1-9.8), the interorbital wide 28.3-36.1% HL (vs. 26.1-27.8), the number of branchiostegal rays 6 (vs. 7), the number of dorsal procurrent caudal-fin rays 14 (vs. 11), the number of ventral procurrent caudal-fin rays 15 (vs. 9), the number of total vertebrae 39 (vs. 38); differs from S. leoncitensis by the total number of dorsal-fin rays 11 (vs. 13), the number of dorsal pterygiophore 7 (vs. 8), the number of ribs 16 (vs. 20), the number of total vertebrae 39 (vs. 40), and the number of interopercle odontodes 14-18 (vs. 18-28) (Ref. 122377).
This species was collected from a small creek, approximately 0.50 m deep and 1 to 3 m wide with silt in suspension, the rocky bottom without aquatic vegetation at an elevation of 1,092 m a.s.l. The drainage lies within an endorheic system that experiences torrential hydrological conditions associated with a few but intense summer rains. Captured specimens were hiding under rocks; the usual habit for fishes in other streams in the Andes. The one other species of fish collected at that site was Hatcheria macraei (Siluriformes, Trichomycteridae). The Río Pedernal is impacted by limestone mining operations and many Andean drainage systems are altered by mining activities, including mountain mining/valley fill practices mainly for extraction of minerals (Ref. 122377).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Fernández, L., E.A. Sanabria and L.B. Quiroga, 2017. Description of Silvinichthys pedernalensis n. sp. (Teleostei, Siluriformes) from the Andean Cordillera of southern South America. An. Bio. Conser. 40(1):1-8. (Ref. 122377)
人類使用
更多資訊
俗名同種異名新陳代謝捕食者生態毒物學繁殖成熟度產卵場產卵群集孕卵數卵卵發育
年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [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).
