分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Saccopharyngiformes (Swallowers and gulpers)
囊鰓鰻目 (Swallowers and gulpers) >
Monognathidae (Onejaws)
單頜鰻科 (Onejaws)
Etymology: Monognathus: Greek, monos = one + Greek, gnathos = jaw (Ref. 45335); nigeli: Named after Nigel Merrett who has provided the suthors with several specimens of Monognathus and was very helpful during their revisionary work..
More on authors: Bertelsen & Nielsen.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海區的; 深度上下限 1500 - 3910 m (Ref. 34506). 深水域
Northeast Atlantic.
東北大西洋。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 5.7 cm TL 雄魚/尚未辨別雌雄; (Ref. 34506)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 82 - 95; 臀鰭軟條: 56 - 60. M. nigeli differs from the other species of the genus by the following combination of characters: head long with elongate, pointed snout and almost straight jaw, skull length 6.0-7.0% TL, rostral fang strongly hooked with distal part in a neatly right angle to dorsal profile of skull, predorsal length 14.5-18.5% TL, anterior anal fin ray below dorsal fin ray nos. 15-21, and 5 lateral, subdermal spots of pigmentation (Ref. 34506).
M. nigeli 在組合特徵之後有別於本屬的另一個種藉由: 頭部長的有細長的, 尖的吻而幾乎直的頜，頭蓋骨長度 6.0-7.0% TL, 嘴的尖牙強烈地以末梢部的部份鉤住在一整潔地對頭蓋骨，前背的長度 14.5-18.5% TL 的背面輪廓的直角, 在背鰭鰭條不之下的前面臀鰭鰭條。 15-21, 與 5個側面又皮下顏色的斑點.(參考文獻 34506)
Four "Discovery" specimens were taken in closing nets between 1510 and 3910 m depth, three of these 1500-2000 m, and one 23 m above the bottom. The "Vityaz" specimen was taken between 3000 m and the surface (Ref. 34506).
四項 " 發現 " 標本在 1510 與 3910 公尺深之間被用閉合網採集, 其中的三個 1500-2000 公尺 , 與一個 23個公尺上方底部。 " Vityaz" 標本在 3000 公尺與表面之間採集.(參考文獻 34506)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
東北大西洋。
Bertelsen, E. and J.G. Nielsen, 1987. The deep sea eel family Monognathidae (Pisces, Anguilliformes). Steenstrupia, 13(4):141-198. (Ref. 34506)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
