imformation about crabs
SCIENTIFIC CLASSIFICATION
KINGDOM:Animalia
PHYLUM:Arthropoda
SUBPHYLUM:Crustacea
CLASS:Malacostraca
ORDER:Decapoda
SUBORDER:Pleocyemata
IMFRAORDER:Brachyura
linnaeus 1758
KINGDOM:Animalia
PHYLUM:Arthropoda
SUBPHYLUM:Crustacea
CLASS:Malacostraca
ORDER:Decapoda
SUBORDER:Pleocyemata
IMFRAORDER:Brachyura
linnaeus 1758
imformation about crabs
EVOLUTION AND CLASSIFICATION FACTS
the infraorder brachyura contains 93 families,as many as the remainder of the decapoda.The evolution of crabs is characterised by an
increasingly robust body,and a reduction in the abdomen.
the infraorder brachyura contains 93 families,as many as the remainder of the decapoda.The evolution of crabs is characterised by an
increasingly robust body,and a reduction in the abdomen.
imformation about crabs
BEHAVIOUR
Crabs are mostly active animals with complex behaviour patterns.They can communicate by drumming or waving their pincers.Crabs tend
to be aggressive towards one another and males often fight to gain access to females.On rocky seashores,where nearly all caves and
crevices are occupied, crabs may also fight over hiding holes.
Crabs are mostly active animals with complex behaviour patterns.They can communicate by drumming or waving their pincers.Crabs tend
to be aggressive towards one another and males often fight to gain access to females.On rocky seashores,where nearly all caves and
crevices are occupied, crabs may also fight over hiding holes.
information about crabs
CRAB FISHERIES
Crabs make up 20% of all marine crustaceans caught,farmed and consumed worldwide,amounting to 1 and a half million tonnes annually.
One species accounts for one fifth of that total:portunus trituberculatus.Other commercilla serrata,eachallchy important taxa include portunus pelagicus.
several species in the genus chionoecetes,the blue crab(callinects sapidus),charybdis spp.,cancer pagurus,the dungeness crab (cancer
magister)and scylla serrata,each of wich yields more than 20,000 tonnes annually.
Crabs make up 20% of all marine crustaceans caught,farmed and consumed worldwide,amounting to 1 and a half million tonnes annually.
One species accounts for one fifth of that total:portunus trituberculatus.Other commercilla serrata,eachallchy important taxa include portunus pelagicus.
several species in the genus chionoecetes,the blue crab(callinects sapidus),charybdis spp.,cancer pagurus,the dungeness crab (cancer
magister)and scylla serrata,each of wich yields more than 20,000 tonnes annually.
imformation about crabs
CULTURAL INFLUENCES OF THE CRAB
The constellation cancer is one of the 12 signs of the zodiac.
John Bevis first observed the crab nebula and it's resemblance to the earthly creature in 1731.
The crab pulsar lies at the nebula's center.
The moche people of ancient peru worshipped nature,especially the sea.
They often depicted crabs in their art.
western cultures have been influenced by the crab towards the game crab soccer,where players rest and move on an inverted alt-fours pose.
The constellation cancer is one of the 12 signs of the zodiac.
John Bevis first observed the crab nebula and it's resemblance to the earthly creature in 1731.
The crab pulsar lies at the nebula's center.
The moche people of ancient peru worshipped nature,especially the sea.
They often depicted crabs in their art.
western cultures have been influenced by the crab towards the game crab soccer,where players rest and move on an inverted alt-fours pose.
DIET
Crabs are omnivores,feeding primarily on algae,and taking any other food,including molluscs,worms,other crustaceans,fungi,bacteria and
detritus,depending on their availability and the crab species.For many crabs,a mixed diet of plant and animal matter results in the fastest
growth and greatest fitness.
Crabs are omnivores,feeding primarily on algae,and taking any other food,including molluscs,worms,other crustaceans,fungi,bacteria and
detritus,depending on their availability and the crab species.For many crabs,a mixed diet of plant and animal matter results in the fastest
growth and greatest fitness.
REMEMBER:always feed your crab or else it will die.(my crab died)
