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Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Oligosarcus: Greek, oligos = small + Greek arkos = anus (Ref. 45335); perdido: Named for its type locality, Rio Perdido; perdido is a Portuguese for lost..
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
; آب شيرين نزديك كف زي. Tropical
South America: Rio Perdido in the upper Paraguai basin, Brazil.
Size / Weight / سن
Maturity: Lm ?  range ? - ? cm
Max length : 9.8 cm SL جنس نر / بدون خواص جنسي; (Ref. 72405)
توصيف مختصر
ريخت شناسي | ريخت ستجي بوسيله انداره گيري
شعاع نرم باله پشتي (کل): 11; مهره ها: 39. Lateral line with 61-63 scales; scales around caudal peduncle 15-20; and premaxilla without enlarged foramen that accommodates the largest dentary tooth when mouth is closed (Ref. 72405).
Found in river where the upper portion is located on a carbonate plateau of about 68 km long. The river in the plateau is dammed by calcareous tufa deposits, forming 1 to 6 m tall sequences of waterfalls. The substrate is composed of many logs, branches and whole trees ling on whitish calcareous clay. Inhabits stretches with sluggish to still waters and appears to occur in low densities. Adults are active from dusk to around 21:00 from near the surface to 2 m deep and always solitary and observed resting after this time along the vertical rocky banks. They remain hidden during the daylight hours. Young fish are observed active during the day, in small groups of 5-6 individuals (Ref. 72405).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Ribeiro, A.C., M.R. Cavallaro and O. Froehlich, 2007. Oligosarcus perdido (Characiformes, Characidae), a new species of freshwater fish from Serra da Bodoquena, upper Rio Paraguai basin, Brazil. Zootaxa 1560:43-53. (Ref. 72405)
وضعيت در فهرست قرمز IUCN (Ref. 130435)
خطر برای انسان ها
Harmless
استفاده انسانی
اطلاعات بيشتر
اسامي عاممترادفسوخت و سازشکارچیانسم شناسي بوم زيستيتولید مثلبلوغتخم ریزیSpawning aggregationFecundityتخم هانمو تخم
Age/Sizeرشدطول - وزنطول - طولنوسانات طولیريخت ستجي بوسيله انداره گيريريخت شناسيتوزاد ( لارو)پويايي لارويبازسازیفراوانيBRUVS
مراجعآبزي پرورينمايه آبزي پرورينژادهاژنتيكElectrophoresesوارثبيماري هافرآوریNutrientsMass conversion
همكارانعکس هاStamps, Coins Misc.صداهاسيگواتراسرعتنوع شناگریمنطقه آبششيOtolithsمغزهابینایی
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
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=0.01000 (0.00444 - 0.02253), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.8 ±0.6 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).