Cameroon country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from the lower Sanaga River (Ref. 38974, 81625).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/cm.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Taniuchi, T., 1991
National Database:

Common names from other countries

Ukpam-astelrai, Speldenkussenpijlstaartrog, Pincushion ray, ... more

Классификация / Names народные названия | синонимы | Catalog of Fishes(род, виды) | ITIS | CoL | WoRMS | Cloffa

Пластиножаберные (акулы и скаты) (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Urogymninae
Etymology:

Issue
Distribution will be corrected.

Environment: milieu / climate zone / depth range / distribution range экология

; пресноводный; солоноватоводный демерсальный. Tropical

распространение страны | регионы FAO | Ecosystems | места находок | Point map | интродукции | Faunafri

Africa: rivers and lakes in western Africa (Ref. 81259, 81625).

Size / Вес / Возраст

Maturity: L_m ? range ? - ? cm
Max length : 120 cm WD самец/пол неопределен; (Ref. 81259)

Краткое описание определительные ключи | морфология | морфометрия

позвонки: 108 - 122. Diagnosis: Dasyatis ukpam is a very large and thick-bodied freshwater dasyatid (Ref. 26277). Entire dorsal surface of disc covered with stout-spined denticles, smooth in newborn (Ref. 26277). Sting greatly reduced in size or absent (Ref. 26277).

Benthic species mostly in lakes and rives, found more than 240 km upstream from the sea (possibly also coastal). The life history and present status of populations in West Africa is unknown. Type specimens were born after capture of the mother; few specimens exist (Ref. 114953). Ovoviviparous (Ref. 50449).

Life cycle and mating behavior Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205).

Основная ссылка Upload your references | ссылки | координатор : McEachran, John | соавторы

Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)

Статус Красного Списка МСОП (Ref. 130435)

В критическом состоянии (CR) (A2cd); Date assessed: 04 August 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

Harmless

Использование человеком

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дополнительная информация

Trophic ecology
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00832 (0.00366 - 0.01891), b=3.10 (2.90 - 3.30), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.7 ±0.3 se; based on size and trophs of closest relatives

устойчивость к внешним воздействиям (Ref. 120179): очень низкий, минимальное время удвоения популяции более 14 лет (Assuming Fec<10).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (90 of 100).

Fontitrygon ukpam (Smith, 1863)