Blue skate

📖 Overview

Benthic species in shelf and slope waters, mainly within the 200 m range along the continental shelf, but down to 600 m along continental slopes and seamounts . Feeds on all kinds of bottom invertebrates and fish, including other skates . Oviparous, with long embryonic development. Males reach maturity at ca. 115 cm TL, females at 123 cm TL; birth size at ca. 21 cm TL . Biology may be unclear due to past taxonomic confusion Distinct pairing with embrace. Young may tend to follow large objects, such as their mother . Mate in spring and the egg capsules are laid during the summer. Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats . Egg capsules are 10.6-24.5 cm long and 5.0-14.5 cm wide . About 40 eggs per individual are laid annually . Flesh is marketed fresh or smoked .

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Anal spines: 0. This species is characterized by the following: snout broadly angular, length 5-6.3 times orbit length; disc broadly rhombic, anterior margin deeply concave; a row of 12-31 predorsal thorns in median row along tail (disc smooth in young; denticles confined to dorsal head and along anterior disc margin on both surfaces in adults; disc thorns small in young, largely absent in adults); lateral thorns on tail perpendicular to body axis; interspace between dorsal fins 1.2 ± 0.4 TL, the fins rounded, upright, near tail tip; upper surface olive-grey or brown with a variable pattern of light blotches, with yellowish ring-like markings; underside greyish; iris yellowish .: other; Cross section: flattened.

🌀 Behaviour

Behavioural data for Blue skate is currently being reviewed.

🦐 Diet

Like other skates, the blue skate is a bottom feeder. Its diet consists of crustaceans, clams, oysters, snails, bristle worms, cephalopods, and small to medium-sized fish (such as sand eel, flatfish, monkfish, catsharks, spurdog, and other skates). The size of the individual can affect its diet. Larger ones eat larger things like fish. The bigger the skate is, the more food will be needed to sustain its large body size. The activity level determines how much it eats; the more active it is, the more it eats. The blue skate does not feed only on creatures at the bottom of the ocean, as some do ascend to feed on mackerel, herring, and other pelagic fish, which are caught by rapidly moving up from the seabed to grab the prey.

🥚 Reproduction

Oviparous, paired eggs are laid. Embryos feed solely on yolk . Egg-cases laid in spring and summer, very large . Distinct pairing with embrace. Young may tend to follow large objects, such as their mother . Eggs have horn-like projections on the shell .

🌍 Habitat & Distribution

Marine; demersal; depth range 100 - 1000 m , usually 30 - 600 m . Temperate; 70°N - 48°N, 30°W - 20°E Northeast Atlantic from Iceland and Scandinavia to the Bay of Biscay, including the United Kingdom, Ireland, and coasts of northwest Europe, up to the Scandinavian Peninsula and into the Skagerrak and Kattegat.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🎣 Angling Guide

📊 Population Dynamics

🌐 Names & Taxonomy

Scientific Synonyms

🐠 Related Species

🔍 Similar Species

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 21 records indexed .

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