CRUSTACEANS

CRUSTACEANS

Hey good looking! Out of over 40,000 species, have I caught your eye?

Hey good looking! Out of over 40,000 species, have I caught your eye?

More About MeMore About Me• Dominate marine habitats,

but I can also be found in freshwater or on land– Often benthic crawling along

he ocean floor.

• I will eat almost anything (filter feeder, predator, scavenger…)

• I exhibit bilateral symmetry, three germ layers, and a coelom.

• I am usually free-living, but sometimes I can be sessile or parasitic

• Dominate marine habitats, but I can also be found in freshwater or on land– Often benthic crawling along

he ocean floor.

• I will eat almost anything (filter feeder, predator, scavenger…)

• I exhibit bilateral symmetry, three germ layers, and a coelom.

• I am usually free-living, but sometimes I can be sessile or parasitic

Favorite activitiesFavorite activities• I have lots of free time. • I enjoy eating, talking walks on the

beach, and watching the sunset through the waves of the ocean.

• I have lots of free time. • I enjoy eating, talking walks on the

beach, and watching the sunset through the waves of the ocean.

• I’m usually very active and like to exercise but sometimes I can be lazy and motionless.

• As an arthropod, I exhibit a hard exoskeleton made of chitin. I also have a calcified cuticle which is important to molting and growth.

• Narplius larvae– Use future antennae and mandibles for

swimming and feeding– Good for dispersal in the marine environment

• Compound eyes and two sets of sensory antennae• Segmented with at least one pair of appendages

per segment– Head, thorax, abdomen (fused head and thorax

=

• As an arthropod, I exhibit a hard exoskeleton made of chitin. I also have a calcified cuticle which is important to molting and growth.

• Narplius larvae– Use future antennae and mandibles for

swimming and feeding– Good for dispersal in the marine environment

• Compound eyes and two sets of sensory antennae• Segmented with at least one pair of appendages

per segment– Head, thorax, abdomen (fused head and thorax

= carapace)

– Appendages very specialized and biramous

• Can be regenerated

carapace)

– Appendages very specialized and biramous

• Can be regenerated

• Respiration :– If I’m small I can use

simple diffusion.– Larger crustaceans have

gills and/or .• Circulation:

– Open circulatory system with a tubular heart

– Smaller organisms circulate hemolymph with body movements

• Excretory:– Malphigian tubules for

removal of nitrogenous weights as uric acid

• Nervous:– Central nervous system,

including brain and ventral nerve chord

• Reproduction– Hermaphrodite

organisms and separate sexes

• Respiration :– If I’m small I can use

simple diffusion.– Larger crustaceans have

gills and/or .• Circulation:

– Open circulatory system with a tubular heart

– Smaller organisms circulate hemolymph with body movements

• Excretory:– Malphigian tubules for

removal of nitrogenous weights as uric acid

• Nervous:– Central nervous system,

including brain and ventral nerve chord

• Reproduction– Hermaphrodite

organisms and separate sexes

– Males use small appendages on the abdomen to transfer sperm to eggs in the female abdomen.

– Most female keep eggs until they hatch.

– Males use small appendages on the abdomen to transfer sperm to eggs in the female abdomen.

– Most female keep eggs until they hatch.

So… who’s up for the beach?So… who’s up for the beach?

• I’m looking for a mate who…– can keep up with me– can help clean up around the

house

• I’m looking for a mate who…– can keep up with me– can help clean up around the

house – is organized– is strong– and is good at

multitasking!

– is organized– is strong– and is good at

multitasking!

• Crustaceans. c. 2008. Britannica Encyclopedia Online. 27 April 2008. <http://www.britannica.com/eb/article-9110242/crustacean>– This site was site was very comprehensive on the different body systems

of crustaceans. It contained lots of details but also laid out the information in a simple organized manner.

• Crustacean Printouts. c. 2008. EnchantedLearning.com. 27 April 2008. <http://www.enchantedlearning.com/subjects/invertebrates/crustacean/>– This site is geared towards students so the information was basic. It was

a good starting point for research. • Hebert. Paul. “Subphylum Crustacea.” Crustacea. 11Sept. 2007.

Encyclopedia of Earth. 27 April 2008. < http://www.eoearth.org/article/Crustacea>– This site was almost too extensive, but it was helpful for filling in details

about certain biological processes of crustaceans. It also had in depth descriptions about the further classifications of crustaceans.

• Myers, Phil. "Crustacea." Animal Diversity Web. c. 1995-2008. University of Michigan Museum of Zooology. 27 April 2008. <http://animaldiversity.ummz.umich.edu/site/accounts/information/Crustacea.html>– This site provided an overview of the common characteristics that make

up a crustacean. It also had an extensive photo gallery.• Wonders of the Sea: Crustaceans. c. 01-02. Oceanside Meadows

Institute for the Arts and Sciences. 27 April 2008. <http://www.oceaninn.com/guides/crustacea.htm>– This site is helpful because it provides many examples of the different

traits of crustaceans as they can be seen across the wide variety of organisms that make up the subphylum. In contrast, it also highlights the wide variety that be found in the subphylum as well, which is why it is so hard to classify.

• Crustaceans. c. 2008. Britannica Encyclopedia Online. 27 April 2008. <http://www.britannica.com/eb/article-9110242/crustacean>– This site was site was very comprehensive on the different body systems

of crustaceans. It contained lots of details but also laid out the information in a simple organized manner.

• Crustacean Printouts. c. 2008. EnchantedLearning.com. 27 April 2008. <http://www.enchantedlearning.com/subjects/invertebrates/crustacean/>– This site is geared towards students so the information was basic. It was

a good starting point for research. • Hebert. Paul. “Subphylum Crustacea.” Crustacea. 11Sept. 2007.

Encyclopedia of Earth. 27 April 2008. < http://www.eoearth.org/article/Crustacea>– This site was almost too extensive, but it was helpful for filling in details

about certain biological processes of crustaceans. It also had in depth descriptions about the further classifications of crustaceans.

• Myers, Phil. "Crustacea." Animal Diversity Web. c. 1995-2008. University of Michigan Museum of Zooology. 27 April 2008. <http://animaldiversity.ummz.umich.edu/site/accounts/information/Crustacea.html>– This site provided an overview of the common characteristics that make

up a crustacean. It also had an extensive photo gallery.• Wonders of the Sea: Crustaceans. c. 01-02. Oceanside Meadows

Institute for the Arts and Sciences. 27 April 2008. <http://www.oceaninn.com/guides/crustacea.htm>– This site is helpful because it provides many examples of the different

traits of crustaceans as they can be seen across the wide variety of organisms that make up the subphylum. In contrast, it also highlights the wide variety that be found in the subphylum as well, which is why it is so hard to classify.