| European lobster | ||||||||||||||||||
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| Homarus gammarus Linnaeus, 1758 |
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Cancer gammarus Linnaeus, 1758 |
The European lobster (Homarus gammarus) (possibly referred as crayfish) is a large European clawed lobster. Carl Linnaeus (Latinized as Carolus Linnaeus, also known after his ennoblement as, May 23 new style (13 May old style 1707 who laid the foundations for In Scientific nomenclature, synonyms are different Scientific names used for a single Taxon. Johan Christian Fabricius ( January 7, 1745 - March 3, 1808) was a Danish Entomologist and economist Thomas Pennant ( 14 June OS 1726 - 16 December 1798) was a Welsh naturalist and Antiquary. Henri Milne-Edwards ( October 23, 1800 - July 29, 1885) was an eminent French Zoologist. Crayfish, crawfish, crawdads, or crodgers are freshwater Crustaceans resembling small Lobsters to which they are closely Clawed lobsters compose a family ( Nephropidae, sometimes also Homaridae) of large marine Crustaceans Lobsters are economically important as It is difficult to distinguish from the American lobster (Homarus americanus) — the best distinction is the geographical location, with the European lobster in the eastern Atlantic Ocean and the American lobster in the western Atlantic, and by the lack of teeth on the underside of the rostrum of a European lobster [1]. The American lobster, Homarus americanus, is one Species of Lobster found on the Atlantic coast of North America. A rostrum ( Latin for "beak" is an anatomical structure resembling a bird's beak, such as the snout of a Crocodile or Dolphin An easier distinction is that U. S. lobsters are brown when uncooked and European ones are blue. Both are red when cooked.
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Range
The natural range of the European lobster is the eastern Atlantic Ocean from the Lofoten Islands in northwestern Norway to the Azores and Morocco. Lofoten is an Archipelago and a traditional district in the county of Nordland, Norway. Norway ( Norwegian: Norge ( Bokmål) or Noreg ( Nynorsk) officially the Kingdom of Norway, is a Constitutional The Azores ( Açores ɐˈsoɾɨʃ or) is a Portuguese Archipelago in the Atlantic Ocean, about 1500 km (950 mi) from Morocco (المغرب "al-Maghrib" officially the Kingdom of Morocco (المملكة المغربية is a country located in North Africa It can also been found in the Mediterranean Sea west of Crete and in the northwestern parts of the Black Sea, but not in the Baltic Sea. Crete ( Greek: Κρήτη transliteration: Krētē, modern transliteration Kriti) is the largest of the Greek islands and the The Black Sea is an inland Sea bounded by southeastern Europe, the Caucasus and the Anatolian peninsula ( Turkey The Baltic Sea is a Brackish inland sea located in Northern Europe, from 53°N to 66°N Latitude and from 20°E to 26°E Longitude. It is rarely found deeper than 50 m, but can be found anywhere from the low tide mark to 150 m, on hard substrates made of rock or mud [2]. The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International Characteristics A tide is a repeated cycle of sea level changes in the following stages Over several hours the water rises or advances up a beach in the flood
Life cycle
The European lobster is solitary, nocturnal and territorial, living in holes or crevices in the sea floor during the day. As an Animal behavior, nocturnality describes sleeping during the Daytime and being active at Night - the opposite of the diurnal In Ethology, Sociobiology and Behavioral ecology, the term territory refers to any sociographical area that an Animal of a particular Species In the summer, lobsters seek mates, and these migrations are the peak time for lobster fishery. The eggs are then carried by the female for around eleven months, meaning that egg-bearing females may be found throughout the year. In most Birds and Reptiles an egg ( Latin ovum) is the Zygote, resulting from Fertilization of the Ovum. After hatching, the planktonic larvae are released. Plankton consist of any drifting Organisms ( Animals Plants Archaea, or Bacteria) that inhabit the Pelagic zone of A larva ( Latin; plural larvae) is a juvenile form of Animal with indirect development, undergoing Metamorphosis (for example These spend approximately 2-3 weeks in the water column. They then settle out of the water column and burrow into the seabed where they spend approximately 2 years. At a carapace length of about 15 mm they leave their burrows for crevices in rocky substrate. A carapace is a dorsal section of an Exoskeleton or shell in a number of animal groups The Millimetre ( American spelling: millimeter, symbol mm) is a unit of Length in the Metric system, equal to The smallest lobsters to be encountered in lobster pots are around 15 cm long. A centimetre ( American spelling: centimeter, symbol cm) is a unit of Length in the Metric system, equal to one hundredth Maturity (and minimum landing sizes) tend to be reached after 4-5 years. The minimum landing size (MLS is the smallest length at which it is legal to keep or sell a fish
The diet of the adult European lobster comprises mostly sea-bottom invertebrates such as crabs, molluscs, sea urchins, polychaete worms and starfish, but may also include fish and plants. Crabs are decapod Crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (βραχύ / brachy Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 Sea urchins are small globular spiny sea cat animals composing most of class Echinoidea. The Polychaeta or polychaetes are a class of Annelid worms generally marine Starfish (also called sea stars) are any Echinoderms belonging to the class Asteroidea. Fish are aquatic Vertebrate animals that are typically ectothermic (previously Cold-blooded) covered with scales, and equipped with two Plants are living Organisms belonging to the kingdom Plantae. When moulting, lobsters eat a greater proportion of sea urchins and starfish, as a source of calcium. Ecdysis is the Molting of the Cuticula in Arthropods and related groups ( Ecdysozoa) Calcium (ˈkælsiəm is the Chemical element with the symbol Ca and Atomic number 20 Feeding is reduced in the winter because of the slower metabolic rate brought on by the lower sea temperatures. Basal metabolic rate ( BMR) is the amount of energy expended while at rest in a neutrally temperate environment in the post-absorptive state (meaning that the digestive system Temperature is a physical property of a system that underlies the common notions of hot and cold something that is hotter generally has the greater temperature
Size
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The European lobster is slightly smaller on average than the closely-related American lobster, Homarus americanus, with a maximum recorded length of 1. The American lobster, Homarus americanus, is one Species of Lobster found on the Atlantic coast of North America. 26 m, and weights of up to nearly 19 kg. The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International However, such giants are rarely seen, and lengths of 23-50 cm with weights of around 0. 7 kg are typical. At the minimum catch size (a carapace length of 87 mm in the British Isles [3][4]), European lobsters are estimated to be 5-7 years old, with the largest specimens being more than 50 years old. A carapace is a dorsal section of an Exoskeleton or shell in a number of animal groups The Millimetre ( American spelling: millimeter, symbol mm) is a unit of Length in the Metric system, equal to The British Isles (Irish variously Na hOileáin Bhriotanacha, Oileáin Iarthair Eorpa, Éire agus an Bhreatain Mhór; Ellanyn Goaldagh Eileanan
Fishery
The European lobster is fished throughout its natural range, but on a smaller scale than the American lobster, although it is considered by connoisseurs to have a finer texture and flavour. The American lobster, Homarus americanus, is one Species of Lobster found on the Atlantic coast of North America. Most of the fishery is carried out with lobster pots, baited with oily fish such as scad, or with pieces of octopus or cuttlefish. The Atlantic horse mackerel, Trachurus trachurus is a species of Mackerel in the family Carangidae. The Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class (which also includes Squid, Octopuses Although attempts have been made to run lobster farms, they proved to be unfeasible because of the lobsters' aggressively territorial habits. The FAO reported an annual catch of over 2,000 tons annually in the 1980s [2]. Units of mass There are three similar units of Mass called the ton: Long ton (simply ton in countries such as the United Prices in 2001 were around €15 per kilogram of lobster meat. Please update other articles as well to avoid contradiction within Wikipedia e
References
- ^ Lipke Holthuis (1991). Lipke Bijdeley Holthuis ( April 21 1921 - March 7 2008) is a Dutch carcinologist, considered one of the "undisputed FAO species catalogue Vol. 13: Marine lobsters of the world.. FAO.
- ^ a b Homarus gammarus (Linnaeus, 1758). FAO.
- ^ The Undersized Lobsters Order 1993.
- ^ Minimum landing sizes in the Isle of Man.
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