Raja parva, African brown skate

You can sponsor this page

Raja parva Last & Séret, 2016

African brown skate
مشاهدات خود را اضافه کنيد در Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Raja parva   AquaMaps   Data sources: GBIF OBIS
را بارگذاری کني تصاوير و فيلم ها
تصوير گوگل
Image of Raja parva (African brown skate)
No image available for this species;
drawing shows typical species in Rajidae.

رده بندی / Names اسامي عام | مترادف | Catalog of Fishes(جنس, گونه ها) | ITIS | CoL | WoRMS | Cloffa

(كوسه ها و سپرماهيان) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335);  parva: Name from Latin word 'parva' meaning small, referring to the small adult size of this skate compared to most of its congeners.

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 - 27 m (Ref. 110364), usually - m (Ref. ).   Tropical; 0°C -

پراكنش كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | Point map | معرفي | Faunafri

Eastern Central Atlantic: known from Liberia, Senegal (Dakar) and Angola; probably more widspread.

Size / Weight / سن

Maturity: Lm ?  range ? - ? cm
Max length : 37.1 cm TL جنس نر / بدون خواص جنسي; (Ref. 110364); 41.1 cm TL (female)

توصيف مختصر ريخت شناسي | ريخت ستجي بوسيله انداره گيري

This species is distinguished by the following set of characters: subcircular disc, its width 57-60% TL, 1.2 times its length; snout angle 91-96°; short tail, its length 1.2-1.4 times distance from snout tip to rear of cloaca; narrow tail, its width 1.2-1.3 times height at its midlength, 1.1 times at first dorsal-fin origin; pre-upper jaw length 10-13% TL, 1.5-1.8 times internasal width; length of ventral head 24-26% TL; length of snout 3-3.8 times interorbital width; orbit diameter 1.06-0.99 times the interorbital width; height of first dorsal-fin 3.4-3.9 in its base length; procaudal tail long, its length from first dorsal-fin origin to tail tip is 3.8-4.7 times first dorsal-fin base length, 3.4-3.6 times caudal-fin length (base of epichordal lobe of caudal fin very long); relatively short pelvic fins, length of posterior lobe 17-18% TL and of anterior lobe 63-72% of posterior lobe; in adults clasper relatively large, ~24% TL, connected to pelvic-fin inner margin at ~47% of its length from cloaca; anterior margin of head possess denticle bands on both surfaces in adult male; nuchal thorns 2; adult male with well-developed malar thorn patch; thorn rows on tail 3-5; pectoral-fin radials 79-81 in total; trunk centra is usually 27-28; usually 75-86 predorsal centra; total centra ~128-131; 38-46 tooth rows in upper jaw; colour brown dorsally with faint lighter and darker speckling; pectoral ocelli is moderately large, with dark bluish grey spot surrounded by a black and a yellow ring; its ventral surface whitish with reddish yellow snout tip and disc margin (Ref. 110364).

زيست شناسي     واژه نامه (بعنوان مثال epibenthic)

Unknown depth range but probably inshore for at least some collected specimens were caught by gill-net (Ref. 110364).

Life cycle and mating behavior بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)

مآخذ اصلی Upload your references | مراجع | هماهنگ كننده : McEachran, John | همكاران

Last, P.R. and B. Séret, 2016. A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex. Zootaxa 4147(4):477-489. (Ref. 110364)

وضعيت در فهرست قرمز IUCN (Ref. 124695)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر برای انسان ها

  Harmless





استفاده انسانی

FAO - Publication: search | FishSource |

اطلاعات بيشتر

كشورها
مناطق سازمان خوار و بار جهاني (FAO)
Ecosystems
ظهور
معرفي
Stocks
بوم شناسي
عادت غذايي
اقلام غذايي
مصرف غذايي
سهمیه
اسامي عام
مترادف
سوخت و ساز
شکارچیان
سم شناسي بوم زيستي
تولید مثل
بلوغ
تخم ریزی
Spawning aggregation
Fecundity
تخم ها
نمو تخم
Age/Size
رشد
طول - وزن
طول - طول
نوسانات طولی
ريخت ستجي بوسيله انداره گيري
ريخت شناسي
توزاد ( لارو)
پويايي لاروي
بازسازی
فراواني
BRUVS
مراجع
آبزي پروري
نمايه آبزي پروري
نژادها
ژنتيك
تواتر آلل ها
وارث
بيماري ها
فرآوری
Nutrients
Mass conversion
همكاران
عکس ها
Stamps, Coins Misc.
صداها
سيگواترا
سرعت
نوع شناگری
منطقه آبششي
Otoliths
مغزها
بینایی

ابزارها

گزارش های ويژه

بارگيری XML

منابع اينترنتي

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | فيش واچر را ببينيد | CISTI | Catalog of Fishes: جنس, گونه ها | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: ژنوم, نوکلئوتيد | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: برو, جستجو | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.6   ±0.6 se; based on size and trophs of closest relatives
جهندگی (Ref. 120179):  متوسط, كمينه زمان لازم براي دو برابر شدن جمعيت 4/1 – 4/4 سال (Preliminary K or Fecundity.).
آسيب پذيری (Ref. 59153):  Low to moderate vulnerability (33 of 100) .