分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Trichomycterus: Greek, thrix = hair + Greek, mykter, -eros = nose (Ref. 45335); maracaya: The specific name maracaya (also mbaracaya) is a Tupi-Guarani Amerindian name for the margay wild cat (Leopardus wiedii), an allusion both to the blotched pigmentation pattern of this species and its predatory habits on vertebrates (tadpoles)..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的; 深度上下限 ? - 1 m (Ref. 51380). 热带
South America: Rio Pardo drainage, upper Rio Paraná, southeastern Brazil.
南美洲: Rio Pardo 流域, 上面的 Rio Parana ，巴西东南方。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 5.1 cm SL 雄鱼/尚未辨别雌雄; (Ref. 51380)
简单描述
型态特徵 | 形态测量图
脊椎骨: 42. Belongs to the Trichomycterus brasiliensis species-complex based on the possession of the following apomorphic characters unique in Trichomycterus: four longitudinal rows of well-defined blotches formed by very dense concentration of dark chromatophores in the deeper layer of skin; and pectoral fin with I+5-6 rays. Members of this putative clade, except T. iheringi, may be further distinguished from other species of Trichomycterus
in having the bases of the pelvic fins very close to each other, sometimes in contact. Differs from the remaining species of Trichomycterus (except T. brasiliensis and T. potschi) in retaining the primordial epiphyseal cartilaginous bar separating the anterior and posterior cranial fontanels even in larger individuals. Distinguished further from other species of the T. brasiliensis species-complex and from all congeners in the following putative autapomorphies: row of blotches on lateral surface not forming a lateral stripe in any stage during ontogeny; and superficial layer of pigmentation of juveniles and larger, presumably adult, specimens formed by scattered chromatophores (Ref. 51380).
属于 巴西毛鼻鲶〔Trichomycterus brasiliensis〕 复合种为依据拥有下列的 apomorphic 特征独特的在 Trichomycterus 中: 四纵列的很清晰在皮肤的较深的层中被由深色色素胞的非常密集集中形成的斑块; 而且胸鳍有 I+5-6 鳍条。 这个想象的进化枝的成员, 除 T. iheringi, 可能是进一步与其他种的 Trichomycterus 区分
有腹鳍基底鳍彼此非常接近, 有时接触在一起。在保有原始的 epiphyseal 軟骨的橫帶甚至在較大的個體中分開前面與後面的頭蓋囟門方面有別於 Trichomycterus(除了 T. brasiliensis 與 T. potschi 以外) 的剩餘種。 可區別的進一步的從其他種的 T. brasiliensis 複合種與從所有的同類在下列的想像 autapomorphies 中: 在側面的表面上的斑塊的列在個體發生的時候在任何的階段中不形成一條側面的斑紋; 而且稚魚的顏色的表面層與比較大的, 成魚 , 標本由分散的色素胞形成了可能.(參考文獻 51380)
描述: Dorsal-fin rays ii+2+7, 很少地 iii+3+7. Anal-fin rays ii+2+5 ， iii+2+5. 胸鰭鰭條 I+6, 很少地 I+7. 腹鰭鰭條 I+4.(參考文獻 51380)
A rheophilic species which dwells on limonite rocky bottom streamlet with pebbles and sand, and pools with muddy bottom and accumulated plant debris. Crepuscular and nocturnal, it forages on the bottom and picks mostly benthic prey. Feeds on immature aquatic insects (ephemeropterans, trichopterans, and plecopterans) with larger individuals preying on small tadpoles (Ref. 51380).
住在褐铁矿上岩石的底部小溪的一个急流生物种且有小圆石的地方与沙子 , 与水池底部为泥质的地方而且累积了植物残枝。 晨昏而夜行的, 它捕食底部而且剔啄大部份底栖的猎物。 吃不成熟的水生昆虫 (ephemeropterans ，毛翅目昆虫与 plecopterans) 有较大的捕食小的蝌蚪的个体.(参考文献 51380)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: Rio Pardo 流域, 上面的 Rio Parana ，巴西东南方。
Bockmann, F.A. and I. Sazima, 2004. Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex. Neotrop. Ichthyol. 2(2):651-74. (Ref. 51380)
人类利用
更多信息
俗名同种异名新陈代谢捕食者生态毒物学繁殖成熟度产卵场产卵群集孕卵数卵卵的发育
年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
参考文献养殖养殖信息品种遗传学Electrophoreses遗传率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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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 (0.00355 - 0.02043), b=2.93 (2.74 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.3 ±0.39 se; based on food items.
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Assuming Fec < 100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
