Malta country information

Common names: Brown ray, Raja lixxa, Raja petruza
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 3167.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mt.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Lanfranco, G.G., 1996
National Database:

Common names from other countries

Raie miroir, Raya de espejos, Homelyn cuckoo ray, ... more

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

Пластиножаберные (акулы и скаты) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
More on author: Linnaeus.

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

морской; солоноватоводный демерсальный; пределы глубины 17 - 462 m (Ref. 56504), usually 50 - 150 m (Ref. 27121). Subtropical; 44°N - 35°S

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

Northeast Atlantic: from Spain (Bay of Biscay) to Morocco and Madiera, including the Mediterranean Sea.

Length at first maturity / Size / Вес / Возраст

Maturity: L_m ?, range 44 - ? cm
Max length : 63.0 cm TL самец/пол неопределен; (Ref. 39256); 59.7 cm TL (female); common length : 35.0 cm TL самец/пол неопределен; (Ref. 2683)

Краткое описание определительные ключи | морфология | морфометрия

колючие лучи спинного плавника (общее число) : 0; колючие лучи анального плавника: 0. Snout short and bluntly pointed; disc angular (Ref. 5578). Upper surface prickly only in young, nearly smooth in adults, underside smooth (Ref. 3167). Upper surface ochre to reddish-brown with scattered dark spots, underside white (Ref. 3167); two bright blue eyespots centered on the pectoral bases (Ref. 5578); may have a small dark spot on tip of snout (Ref. 2708).

Found over soft bottoms of the shelf and the uppermost slope (Ref. 5578). Depth range from 17-300 m, and up to depth of 462 m in the eastern Ionian Sea (Ref. 56504). Feed on all kinds of benthic animals, also on fish offal (Ref. 5578). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 4.2-4.6 cm long and 2.7-2.9 cm wide (Ref. 41250). About 40-72 eggs are lain by an individual in a year (Ref. 41250). Caught by ski-boat anglers (Ref. 5578).

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

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). With egg-cases laid from spring to summer (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

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

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

Статус Красного Списка МСОП (Ref. 130435)

Не вызывающий беспокойства (LC) ; Date assessed: 04 January 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Угроза для людей

Harmless

Использование человеком

рыболовство: коммерческий; объект спортивного рыболовства: да

FAO(рыболовство: production; publication : search) | FishSource | Sea Around Us

дополнительная информация

Trophic ecology
пищевые объекты
Diet compositions
Food consumptions
Food rations
хищники

Ecology
экология
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Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Размерный состав
Mass conversions
Recruitments
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Life cycle
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Maturities
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Egg(s)
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Distribution
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интродукции
BRUVS - Videos

Anatomy
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мозг
Otoliths

Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
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Visual pigment(s)
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Diseases / Parasites
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Genetics
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Human related
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особенности рыбоводства
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Ciguatera cases
Stamps, coins, misc.

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Резюмирующая страница | Point data | народные названия | Фото

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Estimates based on models

Preferred temperature (Ref. 115969): 13.1 - 25.6, mean 17.6 (based on 383 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00182 (0.00152 - 0.00218), b=3.27 (3.23 - 3.31), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

Trophic level (Ref. 69278): 3.7 ±0.6 se; based on diet studies.

устойчивость к внешним воздействиям (Ref. 120179): низкий, минимальное время удвоения популяции 4.5-14 лет (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (51 of 100).

Категория цены (Ref. 80766): Medium.

Raja miraletus Linnaeus, 1758