background image

 

 

Octavio’s 

Book

Crustacea

Crustacea

ns

ns

background image

 

 

Crustaceans 
are 
Invertebrates

 

(no backbones)

background image

 

 

The lobsters 
and crabs 

are 

crustaceans

background image

 

 

background image

 

 

Their body is 
encased in 
a stiff shell 
that … 

background image

 

 

… must be 
shed to allow 
the animal to 
grow

background image

 

 

The shrimps 
and barnacles 
are 
crustaceans

background image

 

 

background image

 

 

A crustaceans 
body is made 
of 3 parts: 
head, thorax 
and abdomen

background image

 

 

although, the 
head and 
thorax may 
fuse

background image

 

 

background image

 

 

Only 

crustaceans 

have two pairs 
of antenna in 
the head

background image

 

 

The krill and 
horseshoe 
crab are 
crustaceans

background image

 

 

background image

 

 

Most 
crustaceans 
are aquatic

background image

 

 

..but some 
have adapted 
to terrestrial 
life

background image

 

 

The hermit 
crab and 
woodlice are 
terrestrial 
crustaceans

background image

 

 

background image

 

 

Few 

crustaceans 

are parasites 
and live 

attached

 

to their host

background image

 

 

The sea lice 
and whale lice 
are 
crustaceans

background image

 

 

background image

 

 

Species of 
crustaceans 
can look very 
different one of 
the other 

background image

 

 

but all have 

the 

basic larval 
form known as 

nauplius

background image

 

 

background image

 

 

Some 
crustaceans 

are an important

 

ingredient

background image

 

 

in the culinary 
tradition of 
many 
countries

background image

 

 

background image

 

 

The science 
that study the 
crustaceans is 
the 

carcinology

background image

 

 

Other interesting 

crustaceans 
are the 

cleaner 

shrimps

 

background image

 

 

background image

 

 

There exists 
more than 
55,000 

species

 

of 

crustaceans


Document Outline