presentation lobster
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is a species of
lobster found on
the Atlantic
coastof North
America, chiefly
from Labrador to
New Jersey.
The American lobster
Mega Kharisma
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Kingdom Animalia
Taxonomy
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Phylum Arthropoda
Taxonomy
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Arthropoda
Tree of Life Web Project. 1995. Arthropoda. Version 01 January 1995 (temporary).http://tolweb.org/Arthropoda/2469/1995.01.01in TheTree of Life Web Project, http://tolweb.org/
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Class Crustacea
Taxonomy
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Crustaceans
Tree of Life Web Project. 2002. Crustacea. Crabs, lobsters, shrimp, barnacles, sow bugs, etc.. Version 01 January 2002 (temporary).http://tolweb.org/Crustacea/2529/2002.01.01in The Tree of Life Web Project, http://tolweb.org/
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Subclass Malacostraca
Taxonomy
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Malacostraca
Tree of Life Web Project. 2002. Malacostraca. Version 01 January 2002 (temporary).http://tolweb.org/Malacostraca/6253/2002.01.01in TheTree of Life Web Project, http://tolweb.org/
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Order Decapoda
Taxonomy
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Decapoda
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Astacidea
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Nephropoidea
Tree of Life Web Project. 2010. Nephropoidea. Version 11 March 2010 (temporary).http://tolweb.org/Nephropoidea/6661/2010.03.11in TheTree of Life Web Project, http://tolweb.org/
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Family Nephropidae
Taxonomy
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Nephropidae
Tree of Life Web Project. 2010. Nephropidae. Version 01 April 2010 (temporary).http://tolweb.org/Nephropidae/6663/2010.04.01in The Treeof Life Web Project, http://tolweb.org/
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Genus Homarus
Taxonomy
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americanusSpecies
Taxonomy
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Homarus americanus
Taxonomy
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Geographic Range
Geographical Distribution : Western
Atlantic: Atlantic coast of North
America between Newfoundland
(Canada) and North Carolina (USA
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M
O
R
F
O
L
OG
Y
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Homarus americanus commonlyreaches 824 inches (200610 mm)
long and weighs 19 pounds (0.454.1
kg) in weight, but has been known to
reach lengths over 3 ft (0.91 m) andweigh as much as 44 lb (20 kg) or more,
making this the heaviest marine
crustacean in the world
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Homarus americanus is distributed
along the Atlantic coast of North
America, from Labrador in the northto Cape Hatteras, North Carolina in the
south.
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Head
The antennae measure about 2 in (51 mm) long and
split into Y-shaped structures with pointed tips. Each
tip exhibits a dense zone of hair tufts staggered in a
zigzag arrangement.
Lobsters have two urinary bladders,
located on either side of the head.
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Thorax
The first pair of pereiopods (legs) is armed with a large,
asymmetrical pair of claws.[2] The larger one is the
"crusher", the other is the "cutter",
Coloration
American lobsters are usually bluish green to brown
with red spines, but a number of color variations have
been observed.
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Nervous System
The lobsters nervous system is very
primitive. In fact it is most similar to the
nervous system of an insect. Neither insects
nor lobsters have brains. Further, lobstersand other invertebrates have only
approximately 100,000 neurons while
humans have over 100 billion.
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Circulation
A lobster's blood is usually greyish/clear
in color. It is circulated by a heart located
just behind the stomach, through a few
large blood vessels. It picks up oxygen
from the water through the gills, found
in the lobsters' thorax section.
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The closest relative ofH. americanus is the
European lobster, Homarus gammarus.
The rostrum ofH. americanus bears one or more
spines on the underside, which are lacking
in H. gammarus. The spines on the claws ofH. americanus are red or
red-tipped, while those ofH. gammarus are white
or white-tipped.
The underside of the claw ofH. americanus isorange or red, while that ofH. gammarus is creamy
white or very pale red.
http://en.wikipedia.org/wiki/Homarus_gammarushttp://en.wikipedia.org/wiki/Homarus_gammarushttp://en.wikipedia.org/wiki/Homarus_gammarushttp://en.wikipedia.org/wiki/Homarus_gammarus -
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Picture
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Brusca, R.C. 2000. Unraveling the history of arthropod
diversification. Annals of the Missouri Botanical
Garden 87:13-25
ReferencesAkam, M. 2000. Arthropods: Developmental diversity within
a (super) phylum. Proceedings of the National
Academy of Sciences (USA) 97:4438-4441.
Tree of Life Web Project. 2002. Crustacea. Crabs, lobsters,
shrimp, barnacles, sow bugs, etc.. Version 01 January
2002 (temporary).http://tolweb.org/Crustacea/2529/2002.01.01in The
Tree of Life Web Project, http://tolweb.org/