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Pleuronectiformes (Flatfishes) >
Cynoglossidae (Tonguefishes) > Symphurinae
Etymology: Symphurus: Greek, syn, symphysis = grown together + Greek, oura = tail (Ref. 45335); megasomus: Name derived from the Greek, 'mega' for large, and 'somus' for body, referring to the large size of this species and the deep body without obvious tapering in the posterior body.
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
دريايي موجوداتی که در محدوده وسیعی از آبهای آزاد از نزدیک بستر و یا روی کف بستر، در قسمت های میان آبی تا سطح آب و در برخی گونه ها با قابلیت پرواز، زندگی و تغذیه می کنند.; تغييرات عمق 200 - 640 m (Ref. 82423). Subtropical
Northwest Pacific: Taiwan.
Length at first maturity / Size / Weight / سن
Maturity: Lm 12.3, range 10 - 14.342 cm
Max length : 14.7 cm SL جنس نر / بدون خواص جنسي; (Ref. 82423); 14.3 cm SL (female)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
شعاع نرم باله پشتي (کل) : 106 - 111; شعاع نرم باله مخرجي: 91 - 96; مهره ها: 55 - 58. This species is distinguished from all its congeners, except S. hondoensis and S. undatus, by its predominant 1-2-3-2-2 ID pattern. It also differs from both abovementioned species in having smaller eye (5.3-7.9% HL vs. 11.0-14.9% HL in S. hondoensis and 11.5-13.8% HL in S. undatus). This species further differs from S. hondoensis
in having 9 abdominal vertebrae (vs. 10). S. megasomus is also distinguished from S. undatus, by having higher fin-ray counts, 106-111 dorsal-fin rays and 91-96 anal-fin rays (vs. 101-105 dorsal-fin rays and 87-91 anal-fin rays) and a uniform straw-colored to dark brown ocular-side coloration (vs. freckled ocular-side pigmentation) (Ref. 82423).
This deep-water tonguefish species is known only from the continental shelf and upper continental slope off northeastern and eastern Taiwan; from 471-640 m by research vessels. Polychaetes, small crustaceans and some unidentified detritus were found in the digestive systems of fishes examined. Little else is known regarding the biology of this species (Ref. 82423).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Lee, M.-Y., H.-M. Chen and K.-T. Shao, 2009. A new species of deep-water tonguefish genus Symphurus (Pleuronectiformes: Cynoglossidae) from Taiwan. Copeia 2009(2):342-347. (Ref. 82423)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-2)
خطر برای انسان ها
Harmless
استفاده انسانی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Preferred temperature (Ref.
123201): 9.6 - 16.7, mean 12.5 °C (based on 17 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00507 - 0.02267), b=3.11 (2.92 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
جهندگی (Ref.
120179): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
