Transcript Annelids
Annelids
BY: BRANDON, JOSH, MARY, REILLY
http://upload.wikimedia.org/wikipedia/commons/c/ca/Oligochaete_GLERL_1.jpg
What type of symmetry do Annelids
have?
Bilateral
symmetrical
http://www.robinsonlibrary.com/science/zoology/annelids/earthworm.htm
"Annelida - Segmented Worms." Annelida. N.p., n.d. Web. 02 Oct. 2014.
How do Annelids move?
Segmented
body
2 sets of muscles
Longitudinal-
expands
Circular- contracts
http://www.robinsonlibrary.com/science/zoology/annelids/earthworm.htm
"Annelida - Segmented Worms." Annelida. N.p., n.d. Web. 02 Oct. 2014.
Nervous System
http://en.wikipedia.org/wiki/Evolution_of_nervous_systems
Primitive
Ring
brain
of nerves to ventral chord
Lateral
Sense
nerves and ganglia
organs
"Annelida." The Columbia Encyclopedia, 6th Ed.. 2014, Jennifer Yeh, "Annelida." A Dictionary of Biology. 2004, Michael Allaby, and AILSA ALLABY;MICHAEL
ALLABY. "Annelida." Encyclopedia.com. HighBeam Research, 01 Jan. 2014. Web. 02 Oct. 2014.
Reish, Donald J. "Annelid (invertebrate)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 01 Oct. 2014.
Digestive System
https://yhsbiology.wikispaces.com/Annelida+Videos
Two
way
Unsegmented
Mouth
gut
to end
Separated
by coelom
"Annelida." The Columbia Encyclopedia, 6th Ed.. 2014, Jennifer Yeh, "Annelida." A Dictionary of Biology. 2004, Michael Allaby, and AILSA ALLABY;MICHAEL
ALLABY. "Annelida." Encyclopedia.com. HighBeam Research, 01 Jan. 2014. Web. 02 Oct. 2014.
Reish, Donald J. "Annelid (invertebrate)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 01 Oct. 2014.
Excretory System
http://osmoregulationapbio3.wikispaces.com/file/view/44_10Protonep
hridia_L.jpg/212064230/480x202/44_10Protonephridia_L.jpg
Protonephrida
Tubules
Flagella
end in cell
and common duct
Metanephridia
Excrete
ammonia products
http://bcs.whfreeman.com/thelifewire/content/chp51/images/IQ5105.gif
"Annelida." The Columbia Encyclopedia, 6th Ed.. 2014, Jennifer Yeh, "Annelida." A Dictionary of Biology. 2004, Michael Allaby, and AILSA ALLABY;MICHAEL
ALLABY. "Annelida." Encyclopedia.com. HighBeam Research, 01 Jan. 2014. Web. 02 Oct. 2014.
Reish, Donald J. "Annelid (invertebrate)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 01 Oct. 2014.
Circulatory System
Closed,
through diffusion
Hemoglobin
Through
Rest
(red/green)
head (contractile vessels)
http://earthwormsinfo.com/wpcontent/uploads/2011/08/wormbiolog
y.jpg
of body (lateral vessels)
Contractile
act as heart
"Annelida." The Columbia Encyclopedia, 6th Ed.. 2014, Jennifer Yeh, "Annelida." A Dictionary of Biology. 2004, Michael Allaby, and AILSA ALLABY;MICHAEL
ALLABY. "Annelida." Encyclopedia.com. HighBeam Research, 01 Jan. 2014. Web. 02 Oct. 2014.
Reish, Donald J. "Annelid (invertebrate)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 01 Oct. 2014.
Respiratory System
Through
skin or gill filaments
Diffusion
Oxygen
carried
Hemoglobin
or chlorocruorin
http://myclasses.naperville203.org/staff/NNHSBiology/KraftsonEco/
Animal%20Kingdom%20%20Period%202%20Picture%20Library/Anne
lida/annelida.bmp
"Annelida." The Columbia Encyclopedia, 6th Ed.. 2014, Jennifer Yeh, "Annelida." A Dictionary of Biology. 2004, Michael Allaby, and AILSA ALLABY;MICHAEL
ALLABY. "Annelida." Encyclopedia.com. HighBeam Research, 01 Jan. 2014. Web. 02 Oct. 2014.
Reish, Donald J. "Annelid (invertebrate)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 01 Oct. 2014.
Support/Skeletal System
Coelom
Liquid
filled
“Inflates”
annelid
http://www.anselm.edu/homepage/jpitocch/genbi101/18_03bTrueCoelom-L%20copy.jpg
"Annelida." The Columbia Encyclopedia, 6th Ed.. 2014, Jennifer Yeh, "Annelida." A Dictionary of Biology. 2004, Michael Allaby, and AILSA ALLABY;MICHAEL
ALLABY. "Annelida." Encyclopedia.com. HighBeam Research, 01 Jan. 2014. Web. 02 Oct. 2014.
Reish, Donald J. "Annelid (invertebrate)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 01 Oct. 2014.
Reproductive System
Sexual
Some
hermaphrodites
Most-
separate genders
http://www.robinsonlibrary.com/science/zoology/annelids/graphics/earthworm3.gif
"Annelida." The Columbia Encyclopedia, 6th Ed.. 2014, Jennifer Yeh, "Annelida." A Dictionary of Biology. 2004, Michael Allaby, and AILSA ALLABY;MICHAEL
ALLABY. "Annelida." Encyclopedia.com. HighBeam Research, 01 Jan. 2014. Web. 02 Oct. 2014.
Reish, Donald J. "Annelid (invertebrate)." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 01 Oct. 2014.
Oligochaeta (few bristles)
Specialized derived worms
About 3000 species
Less than 10 families
Mostly small and inconspicuous
Few large and terrestrial (earthworms)
http://upload.wikimedia.org/wikipedia/commons/c/
ca/Oligochaete_GLERL_1.jpg
Hansen, Armauer. Annelida = Annelida. Christiana:
Grøndahl, 1882. Print.
Oligochaeta (continued)
Inhabit moist environments
Homogenous class
http://classconnection.s3.amazonaws.com/613/flash
cards/884613/jpg/earthw11320351359586.jpg
Hansen, Armauer. Annelida = Annelida. Christiana:
Grøndahl, 1882. Print.
Polychaeta (many bristles)
Almost entirely marine
Important for benthic communities
Very diverse, heterogeneous
About 8000 species
80 families
http://www.bio.miami.edu/dana/pix/polychaete1.jp
g
Hansen, Armauer. Annelida = Annelida. Christiana:
Grøndahl, 1882. Print.
Polychaeta (continued)
Burrowers, tube dwelling, free living, and mobile
At least one pair of sensory appendages
Body wall is extended laterally (parapodia)
https://encryptedtbn0.gstatic.com/images?q=tbn:ANd9GcSdUve23jBF
QrhfqhJ-PvoHHUxegh7fvo3eirDUzT_wYpLdC8sKVw
Hansen, Armauer. Annelida = Annelida. Christiana:
Grøndahl, 1882. Print.
Hirudinea (leeches)
Derived from oligochaeta
Homologenous taxon
About 500 species
Relatively large (up to 30 cm)
Always with 34 segments
https://encryptedtbn3.gstatic.com/images?q=tbn:ANd9GcSpDjwhc4l6
hqPAmHBZTeRCkQ7-_nDIIRWH9JNZP-SkpHBvpAXnZg
Hansen, Armauer. Annelida = Annelida. Christiana:
Grøndahl, 1882. Print.
Hirudinea (continued)
Originally freshwater
Also marine and terrestrial
Parasitic or predators
https://lh5.googleusercontent.com/NodTi4TCS6U/TXj0HBxsYLI/AAAAAAAAADc/EryEpkwUZ
DA/s1600/1.jpg
Hansen, Armauer. Annelida = Annelida. Christiana:
Grøndahl, 1882. Print.
Other Phylum Facts
AKA segmented worms
Spilt
in to sections
Living area
Marine,
Freshwater, and terrestrial
"Phylum Annelida." Iweb. Tntech, 9 Oct. 2010. Web. 1
Oct. 2014.
<http%3A%2F%2Fcfcc.edu%2Ffaculty%2Frogers%2Fco
urses%2Fmsc174%2FLectures%2FPhylum%2520Annelia
>.
https://encryptedtbn0.gstatic.com/images?q=tb
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Hermaphrodites
Male sex organs
Female sex organs
Can’t self fertilize
https://encryptedtbn0.gstatic.com/images?q=tbn:ANd9GcTjFGTH0ac
UK5r7YzFs-f9nokY_mzXnYwz3yjF-dZ-iMLTdeZxv2g
"Phylum Annelida." Iweb. Tntech, 9 Oct. 2010. Web. 1
Oct. 2014.
<http%3A%2F%2Fcfcc.edu%2Ffaculty%2Frogers%2Fco
urses%2Fmsc174%2FLectures%2FPhylum%2520Annelia
>.
Clitellum
Raised band (Bandaid)
Near head
14,
15, 16 segment
Forms mucus around eggs
Cocoon
"Phylum Annelida." Iweb. Tntech, 9 Oct. 2010. Web. 1
Oct. 2014.
<http%3A%2F%2Fcfcc.edu%2Ffaculty%2Frogers%2Fco
urses%2Fmsc174%2FLectures%2FPhylum%2520Annelia
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https://encryptedtbn0.gstatic.com/images?q=tbn:AN
d9GcRPg6bmr9FSJMPSFEKffYkYAo9R4qh6a
ETAb5h05p1BTW7U4MbGw
https://yhsbiology.wikispaces.com/file/view/earthworm.gif/49088829/500x295/earthworm.gif
Esophagus
Crop
Gizzard
Male Reproductive organs
Intestine
Female reproductive organs
Hearts
Central Ganglia
Pharynx
Mouth
Ventral blood vessel
Segmental blood vessel
Clitellum
Dorsal blood vessel
Segmental Ganglion
Segmental nerves
Polychaeta- Bristle worms
Polyphyletic class of annelid worms
Each body segment has a pair of fleshy
protrusions called parapodia that have many
bristles called chaetae
https://www.google.com/search?q=worms&es_sm=93&source=lnms&tbm=isch
&sa=X&ei=kpUtVO3IN4TnoATTuIDgAw&ved=0CAgQ_AUoAQ&safe=active&ssui
=on#safe=strict&tbm=isch&q=Bristle+worms
Hirudinea- Leech
Leeches are segmented worms that belong to
the phylum annelid
Always have 34 segments
Marine and land
https://www.google.com/search?q=worms&es_sm=93&source=lnms&tbm=isch&sa=X&ei
=kpUtVO3IN4TnoATTuIDgAw&ved=0CAgQ_AUoAQ&safe=active&ssui=on#safe=strict&tb
m=isch&q=Leech