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= Homarus gammarus =
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Homarus gammarus , known as the European lobster or common lobster , is a species of clawed lobster from the eastern Atlantic Ocean , Mediterranean Sea and parts of the Black Sea . It is closely related to the American lobster , H. americanus . It may grow to a length of 60 cm ( 24 in ) and a mass of 6 kilograms ( 13 ... |
= = Description = =
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Homarus gammarus is a large crustacean , with a body length up to 60 centimetres ( 24 in ) and weighing up to 5 – 6 kilograms ( 11 – 13 lb ) , although the lobsters caught in lobster pots are usually 23 – 38 cm ( 9 – 15 in ) long and weigh 0 @.@ 7 – 2 @.@ 2 kg ( 1 @.@ 5 – 4 @.@ 9 lb ) . Like other crustaceans , lobste... |
The first pair of pereiopods is armed with a large , asymmetrical pair of claws . The larger one is the " crusher " , and has rounded nodules used for crushing prey ; the other is the " cutter " , which has sharp inner edges , and is used for holding or tearing the prey . Usually , the left claw is the crusher , and t... |
The exoskeleton is generally blue above , with spots that coalesce , and yellow below . The red colour associated with lobsters only appears after cooking . This occurs because , in life , the red pigment astaxanthin is bound to a protein complex , but the complex is broken up by the heat of cooking , releasing the re... |
The closest relative of H. gammarus is the American lobster , Homarus americanus . The two species are very similar , and can be crossed artificially , although hybrids are unlikely to occur in the wild since their ranges do not overlap . The two species can be distinguished by a number of characteristics :
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The rostrum of H. americanus bears one or more spines on the underside , which are lacking in H. gammarus .
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The spines on the claws of H. americanus are red or red @-@ tipped , while those of H. gammarus are white or white @-@ tipped .
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The underside of the claw of H. americanus is orange or red , while that of H. gammarus is creamy white or very pale red .
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= = Life cycle = =
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Female H. gammarus reach sexual maturity when they have grown to a carapace length of 80 – 85 millimetres ( 3 @.@ 1 – 3 @.@ 3 in ) , whereas males mature at a slightly smaller size . Mating typically occurs in summer between a recently moulted female , whose shell is therefore soft , and a hard @-@ shelled male . The ... |
The eggs hatch at night , and the larvae swim to the water surface where they drift with the ocean currents , preying on zooplankton . This stage involves three moults and lasts for 15 – 35 days . After the third moult , the juvenile takes on a form closer to the adult , and adopts a benthic lifestyle . The juveniles ... |
= = Distribution = =
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Homarus gammarus is found across the north @-@ eastern Atlantic Ocean from northern Norway to the Azores and Morocco , not including the Baltic Sea . It is also present in most of the Mediterranean Sea , only missing from the section east of Crete , and along only the north @-@ west coast of the Black Sea . The northe... |
The species can be divided into four genetically distinct populations , one widespread population , and three which have diverged due to small effective population sizes , possibly due to adaptation to the local environment . The first of these is the population of lobsters from northern Norway , which have been refer... |
Attempts have been made to introduce H. gammarus to New Zealand , alongside other European species such as the edible crab , Cancer pagurus . Between 1904 and 1914 , one million lobster larvae were released from hatcheries in Dunedin , but the species did not become established there .
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= = Ecology = =
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Adult H. gammarus live on the continental shelf at depths of 0 – 150 metres ( 0 – 492 ft ) , although not normally deeper than 50 m ( 160 ft ) . They prefer hard substrates , such as rocks or hard mud , and live in holes or crevices , emerging at night to feed .
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The diet of H. gammarus mostly consists of other benthic invertebrates . These include crabs , molluscs , sea urchins , starfish and polychaete worms .
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The three clawed lobster species Homarus gammarus , H. americanus and Nephrops norvegicus are hosts to the three known species of the animal phylum Cycliophora ; the species on H. gammarus has not been described .
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Homarus gammarus is susceptible to the disease gaffkaemia , caused by the bacterium Aerococcus viridans . Although it is frequently found in American lobsters , the disease has only been seen in captive H. gammarus , where prior occupation of the tanks by H. americanus could not be ruled out .
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= = Human consumption = =
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Homarus gammarus is traditionally " highly esteemed " as a foodstuff and was mentioned in " The Crabfish " a seventeenth century English folk song . It may fetch very high prices and may be sold fresh , frozen , canned or powdered . Both the claws and the abdomen of H. gammarus contain " excellent " white meat , and m... |
Lobsters are mostly fished using lobster pots , although lines baited with octopus or cuttlefish sometimes succeed in tempting them out , to allow them to be caught in a net or by hand . In 2008 , 4 @,@ 386 t of H. gammarus were caught across Europe and North Africa , of which 3 @,@ 462 t ( 79 % ) was caught in the Br... |
Aquaculture systems for H. gammarus are under development , and production rates are still very low .
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= = Taxonomic history = =
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Homarus gammarus was first given a binomial name by Carl Linnaeus in the tenth edition of his Systema Naturae , published in 1758 . That name was Cancer gammarus , since Linnaeus ' concept of the genus Cancer at that time included all large crustaceans .
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H. gammarus is the type species of the genus Homarus Weber , 1795 , as determined by Direction 51 of the International Commission on Zoological Nomenclature . Prior to that direction , confusion arose because the species had been referred to by several different names , including Astacus marinus Fabricius , 1775 and H... |
The type specimen of Homarus gammarus was a lectotype selected by Lipke Holthuis in 1974 . It came from 57 ° 53 ′ N 11 ° 32 ′ E , near Marstrand , Sweden ( 48 kilometres or 30 miles northwest of Gothenburg ) , but both it and the paralectotypes have since been lost .
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The common name for H. gammarus preferred by the Food and Agriculture Organization is " European lobster " , but the species is also widely known as the " common lobster " .
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= Frank Headlam =
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Air Vice Marshal Frank Headlam , CB , CBE ( 15 July 1914 – 23 December 1976 ) was a senior commander in the Royal Australian Air Force ( RAAF ) . Born and educated in Tasmania , he joined the RAAF as an air cadet in January 1934 . He specialised in flying instruction and navigation before the outbreak of World War II ... |
Headlam served as Officer Commanding North @-@ Western Area in 1946 , and as Director of Training from 1947 to 1950 . In 1950 – 51 , during the Malayan Emergency , he was stationed at Singapore as commander of No. 90 ( Composite ) Wing and , later , RAF Tengah . He twice served as acting Air Member for Personnel , in ... |
= = Early career = =
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The son of farmers Malcolm and Hilda Headlam , Frank Headlam was born on 15 July 1914 in Launceston , Tasmania . He was schooled at Clemes College , Hobart , and matriculated in 1932 . Against the wishes of his parents he joined the Royal Australian Air Force ( RAAF ) as an air cadet on 16 January 1934 . He underwent ... |
After completing a conversion course , Headlam was assigned to the Seaplane Squadron at Point Cook . No larger than a flight according to the official history of the pre @-@ war RAAF , Seaplane Squadron was part of No. 1 FTS and operated Supermarine Southampton flying boats and de Havilland Gipsy Moth floatplanes , am... |
Headlam completed a flying instructors course in July 1936 and joined the staff of No. 1 FTS . He was promoted to flight lieutenant on 1 March 1937 . Commencing in July 1938 , he was one of six students to take part in the RAAF 's first Long Specialist Navigation Course , run by Flight Lieutenants Bill Garing and Alis... |
= = World War II = =
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Following the outbreak of World War II , No. 1 Squadron was engaged in convoy escort and maritime reconnaissance duties off south @-@ eastern Australia . Headlam continued to serve with the squadron as a flight commander until 15 January 1940 , when he was assigned to Headquarters Laverton as the station navigation of... |
Headlam was given command of No. 2 Squadron at Laverton on 15 April 1941 , and raised to wing commander on 1 July . Equipped with Lockheed Hudsons , the squadron mainly conducted maritime patrols in southern waters until 5 December , when four of its aircraft were ordered to Darwin , Northern Territory , in response t... |
During January 1942 , No. 2 Squadron 's aircraft were dispersed at Penfui , Boeroe Island , and Darwin . The Penfui detachment attacked Japanese shipping taking part in the invasion of Celebes . Two Hudsons shot down or damaged three Japanese floatplanes that attacked them as they were bombing a transport ship on 11 J... |
Headlam remained in Darwin as Controller of Operations at Headquarters North @-@ Western Area Command until 12 May 1942 , when he was posted to Nhill , Victoria , as commanding officer of No. 2 Air Navigation School , operating Ansons . No. 97 ( Reserve ) Squadron was formed from the school 's personnel in June . On 2... |
= = Post @-@ war career = =
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Headlam became Officer Commanding North @-@ Western Area in January 1946 . Posted to Britain at the end of the year , he attended the Royal Air Force Staff College , Andover , and served with RAAF Overseas Headquarters , London . On his return to Australia , in November 1947 , he became Director of Training at RAAF He... |
Headlam was promoted to substantive air commodore on 1 January 1955 . In November he was posted to RAAF Overseas Headquarters , London , and the following year undertook studies at the Imperial Defence College . Returning to Australia , he served as acting Air Member for Personnel at the Department of Air , Canberra ,... |
On 30 January 1961 , Headlam joined the staff of Operational Command ( OPCOM ) , the successor organisation to Home Command , responsible for the direction of RAAF operational units . He took over as Air Officer Commanding ( AOC ) OPCOM from Air Vice Marshal Val Hancock in April . Headlam was promoted to air vice mars... |
Returning to Australia , Headlam became Deputy Chief of the Air Staff ( DCAS ) on 26 January 1965 . He was appointed a Companion of the Order of the Bath ( CB ) " in recognition of distinguished service in the Borneo Territories " on 22 June . His tenure as DCAS coincided with the most significant rearmament program t... |
= = Retirement = =
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Returning to Australia in June 1971 , Headlam took resettlement leave before retiring from the Air Force on 3 August . He made his home in Melbourne , where he died aged 62 on 23 December 1976 , after a lengthy battle with cancer . Survived by his children and his second wife , he was given a private funeral and crema... |
= M @-@ 82 ( Michigan highway ) =
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M @-@ 82 is a state trunkline in the Lower Peninsula in the US state of Michigan that travels between Fremont and Howard City . The section between Newaygo and Howard City travels through Fremont and along the southern edge of Manistee National Forest . The current version of M @-@ 82 is actually the second in the sta... |
= = Route description = =
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M @-@ 82 begins at a junction with M @-@ 120 and B @-@ 96 west of Fremont . This junction is at a tripoint of county lines . M @-@ 120 forms the north – south Newaygo – Oceana and Newaygo – Muskegon county lines . B @-@ 96 , which forms the east – west Oceana – Muskegon county line runs due west of the intersection . ... |
The Michigan Department of Transportation ( MDOT ) , as a part of its maintenance responsibilities , tracks the volume of traffic using its roadways . These levels are expressed in terms of a metric called average annual daily traffic ( AADT ) , which is a calculation of the traffic along a segment of road for any ave... |
= = History = =
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= = = Previous designation = = =
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The first usage of M @-@ 82 was in the Upper Peninsula by July 1 , 1919 . The trunkline started at M @-@ 25 and ran north of Newberry to the vicinity of Eight Mile Corner . It was later replaced by M @-@ 48 in 1926 .
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= = = Current designation = = =
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The current M @-@ 82 dates back to 1926 . It ran from US 31 in Hart to the northern junction of US 131 and M @-@ 46 in Howard City . The highway was routed through Ferry , Hesperia and Fremont , replacing M @-@ 41 . In late 1936 , M @-@ 46 was extended along the section between Newaygo and Howard City , forming a M @-... |
Two realignments in 1963 and 1964 rerouted the western end of the highway again . This time it was realigned to run from Hesperia to New Era , bypassing Ferry . A larger change around 1969 reconfigured the highway designations in Oceana County . M @-@ 20 replaced M @-@ 82 west of Hesperia , to end at New Era instead o... |
= = Major intersections = =
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