Download Insect Isopoda Meaning of the name: iso - same poda

i) Insect Isopoda
Reason for the name:
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The name Isopoda comes from the greek;
iso – same & poda – foot
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The name Insecta comes from latin;
insecta – divided/notched body
Isopods existing:
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Current number of species are 10,000.
Other names for Isopods:
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Pillbugs
Sowbugs
Woodlice
Rolly Pollies
Bicho Bola (in Spanish)
Types of Isopods
Phreatoicidea
Oniscidea
Asellota
Microcerberidae
Sphaeromatidae
Characteristics
1.
The insects/isopoda body is divided in three regions
2.
Abdomen consists of 5 free segments
3.
Each pleonite bears a pair of Biramous Pleopods
4.
Isopods have compound eyes, two pairs of antennae, and four sets of jaws
5.
Sessile eyes (meaning they have eyes that don’t move)
6.
The carapace is reduced to a cephalic shield
7.
They have two types of antennaes
8.
Has a heart thoraco-abdominal
9.
Principal gas exchange structures are pleopods
1st appeared on earth “Fossil Record”:
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The first fossil record was found around 300 million years ago.
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In the Antarctic Marion island.
Life Cycle
Reproduction:
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Isopods reproduce sexually.
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After mating the female carries her eggs in a special adapted pouch.
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The eggs mature in approximately three weeks.
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Egg, larvae, pupae, metamorphosis, adult
Digestive System
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Its a closed system (meaning inside)
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Alimentary canal (tube) running lengthwise through its body.
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The food enters through there mouth and goes out through
there anus.
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They tend to eat plant and animal tissues.
Circulatory System
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Insects don't have veins or arteries
(but they do have a circulatory system)
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Insect blood, are called hemolymph.
Respiratory System
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All insects have the same type of respiratory system.
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Air enters through body by cavities.
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The air is regulated by small muscles.
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It enters a tracheal trunk.
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And later diffusing throughout a complex,
branching network of tracheal tubes.
Sensory System
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Their sensory system is really simple,
since their only sensory part are the antennae's.
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Sessile eyes (meaning they have eyes that don’t move)
Life Expectancy
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The life expectancy of an Isopoda is really short.
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Normally it will usually live for some months
(depending also in its habitat)
Bibliography
Information:
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http://tolweb.org/Isopoda
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http://es.wikipedia.org/wiki/Isopoda
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http://www.ehow.com/about_5317360_isopod-life-cycle.html
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http://insects.about.com/od/morphology/ss/internalanatomy_4.htm
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http://insects.about.com/od/morphology/ss/internalanatomy_3.htm
Pictures:
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http://soilbugs.massey.ac.nz/isopoda.php
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http://www.google.es/search?q=isopoda&hl=es&rlz=1C1GGGE_esES454ES454&prm
d=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=eYFCT7j1H8iIhQe8guXUCA&v
ed=0CGoQsAQ&biw=1092&bih=533