Guinea-Bissau 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 Cacheu River (Ref. 7397, 81259). Also Ref. 81625.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/pu.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Séret, B., 2003
National Database:

Common names from other countries

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

Classification / Names आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa

इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Urogymninae
Etymology:

Issue
Distribution will be corrected.

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

; स्वच्छ जल, अलवण जल; खारा ड़िमरसल. Tropical

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

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

आकार / वज़न / Age

Maturity: L_m ? range ? - ? cm
Max length : 120 cm WD पुल्लिंग / अलिंग; (Ref. 81259)

Short description पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स

जानवरों की रीड़ का जोड़: 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 | पुनरुत्पत्ति | Spawnings | Egg(s) | Fecundities | लार्वा

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).

Main reference Upload your references | संदर्भ | संयोजक : McEachran, John | सहयोगीयो

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)

IUCN Red List Status (Ref. 130435)

Critically Endangered (CR) (A2cd); Date assessed: 04 August 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FishSource |

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Ecology
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Life cycle
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इंटरनेट स्रोत

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

लौटाव (Ref. 120179): बहुत नीचे, न्यूनतम जनसंख्या दुगनी समय अवलागत 14 महीने। (Assuming Fec<10).

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

Fontitrygon ukpam (Smith, 1863)