Kungskrabba alaska
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Red king crab
Species of king crab
The red king crab (Paralithodes camtschaticus), also called Kamchatka crab or Alaskan king crab, is a species of king crab native to cold waters in the North Pacific Ocean and adjacent seas, but also introduced to the Barents Sea. It grows to a leg span of &#;m (&#;ft), and is heavily targeted by fisheries.
Description
[edit]The red king crab is the largest species of king crab.[2] Red king crabs can reach a carapace width up to 28&#;cm (11&#;in), a leg span of &#;m (&#;ft),[3] and a weight of &#;kg (28&#;lb).[4] Males grow larger than females. Today, red king crabs infrequently surpass 17&#;cm (7&#;in) in carapace width and the average male landed in the Bering Sea weighs &#;kg (&#;lb).[2] It was named after the color it turns when it is cooked rather than the color of a living animal, which tends to be more burgundy.
Distribution
[edit]The red king crab is native to cold waters in the North Pacific Ocean and adjacent seas, ranging from the Bering Sea south to the Gulf of Alaska, off the Kamchatka Peninsula, and in the Sea of Okhotsk and Sea of Japan.[2] It was intro
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Alaskan king crab fishing
Commercial harvest of Alaskan king crab
Alaskan king crab fishing fryst vatten carried out during the fall in the waters off the coast of Alaska and the Aleutian Islands. The commercial catch is shipped worldwide. Large numbers of king crab are also caught in Russian and international waters.
In , at the peak of the king crab industry, Alaskan fisheries produced up to ,, pounds (91,,&#;kg) of crab. However, bygd , the total storlek of the catch had dropped bygd up to 90% in some places.[1] Several theories for the precipitous drop in the crab population have been proposed, including overfishing, warmer waters, and increased fish predation.[2] As a result, the current season fryst vatten very short and in the årstid, only 24,, pounds (11,,&#;kg) of red king crab were landed.[3]
Alaskan crab fishing is very dangerous, and the fatality rate among the fishermen is about 80 times the fatality rate of the average worker. It is suggested that, on average, one crab fisherman dies weekly during the seasons.[4]
Types of commercially valuable king crab
[edit]In Alaska, three species of king crab are caught commercially: the red king cr
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Kungskrabba
Kungskrabba[1] (Paralithodes camtschaticus) är en stor art av krabba inom familjen Paguridae. Arten beskrevs ursprungligen som Maja camtschatica av Wilhelm Gottlieb Tilesius von Tilenau.
Utseende
[redigera | redigera wikitext]Fullvuxen kan den väga upp till sju kilo och mäta 1,8 m mellan benspetsarna.[1]
Utbredning
[redigera | redigera wikitext]Dess naturliga utbredningsområde är norra Stilla havet, speciellt utanför Japan och Alaska. De planterades ut av Sovjetunionen under talet utanför Murmansk och har sedan spridit sig längs kusten till norska Lofoten.
Ekologi
[redigera | redigera wikitext]Kungskrabban, som är allätare, är mycket framgångsrik och kan konkurrera ut andra arter där den breder ut sig. Idealtemperaturen är grader C, och vattnets salthalt måste vara högre än vid den svenska västkusten. Den lever på 10– meters djup.[1] Unga kungskrabbor förekommer främst på bottnar med grovt grus och sten, medan de vuxna föredrar bottnar med lera och sand.[1]
Kungskrabban och människor
[redigera | redigera wikitext]Kungskrabban fiskas kraftigt och dess ben anses vara en delikatess.