Subphylum Crustacea by Christie Lohr https://padlet.com/cl048/maep1a3ygroi Evolution en-us 2018-05-30 17:54:47 UTC 2018-06-05 01:06:52 UTC hello@padlet.com 4 Major Characteristics Shared by All Crustaceans cl048 https://padlet.com/cl048/maep1a3ygroi/wish/264605522 1. All crustaceans molt
2. All head segments have antennae
3. All have gills
4. All have an exoskeleton
http://www.oceaninn.com/wildlife/crustaceans
https://animalsake.com/crustaceans-characteristics]]> 2018-05-30 18:01:24 UTC https://padlet.com/cl048/maep1a3ygroi/wish/264605522 European Lobster cl048 https://padlet.com/cl048/maep1a3ygroi/wish/264607114 Habitat
  • Found in oceans(reefs/rocks), mud, or sand
Physical Characteristics
  • 2 Front claws- one big, bulky claw used for killing prey and one slightly smaller claw for slicing
  • Soft internal tissue protected by exoskeleton
  • Back Tail allows for reverse swimming
  • If limb is lost, new one can grow
Behavioral Characteristics
  • Nocturnal
  • Female attaches 10,000-100,000 eggs to abdominal legs and carries for 10-12 months
  • Eggs change color when developing
  • Males look for mate when female no longer has exoskeleton and male does
http://www.waza.org/en/zoo/choose-a-species/invertebrates/other-aquatic-invertebrates/homarus-gammarus
https://www.nationallobsterhatchery.co.uk/whats-it-all-about/education/lobster-biology/
]]> 2018-05-30 18:07:20 UTC https://padlet.com/cl048/maep1a3ygroi/wish/264607114 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/264607828 2018-05-30 18:19:56 UTC https://padlet.com/cl048/maep1a3ygroi/wish/264607828 Gooseneck Barnacle cl048 https://padlet.com/cl048/maep1a3ygroi/wish/264608058 Habitat
  • Attach themselves to rocks, boats, and other animals
Physical Characteristics
  • Stalked barnacle with a heart-shaped shell
  • Chalky white color with black strips
  • resembles head of a barnacle goose 
Behavioral Characteristics
  • Has both male and female sex organs
  • Eggs hatch into free swimming larvae which helps make up zoo plankton
  • In development they attach themselves with the stalk and do not move again unless removed by accident
  • Gather food with feather-like legs that filter particles from the water
  • Grow in sufficient numbers
https://www.arkive.org/goose-barnacle/lepas-anatifera/

]]> 2018-05-30 18:22:55 UTC https://padlet.com/cl048/maep1a3ygroi/wish/264608058 Fairy Shrimp cl048 https://padlet.com/cl048/maep1a3ygroi/wish/264831832 Habitat
  • Live in vernal pools(temporary pools/ponds of water that provide habitat for distinctive animals)
  • Sometimes found in roadside ditches filled with water 
Physical Characteristics
  • 10-44mm long
  • pale colored or transparent
  • long narrow body with 11 pairs of paddle-like legs
  • females have a broad patch to carry eggs in(located below the legs)
Behavioral Characteristics
  • Swim upside down
  • eat algae and plankton
  • to digest food they produce a thick glue-like substance to mix with meal
  • use legs to gather food or scrape it from surface
  • one eggs hatch grow to maturity very quickly(18-60 days)
  • female's produce cysts which carry eggs
  • once cyst is released female can mate again
  • female produces several hundred cysts per season
https://www.nwf.org/Educational-Resources/Wildlife-Guide/Invertebrates/Vernal-Pool-Fairy-Shrimp

]]> 2018-05-31 16:24:27 UTC https://padlet.com/cl048/maep1a3ygroi/wish/264831832 CRUSTACEANS cl048 https://padlet.com/cl048/maep1a3ygroi/wish/264831903 2018-05-31 16:24:45 UTC https://padlet.com/cl048/maep1a3ygroi/wish/264831903 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/264858498 2018-05-31 18:01:09 UTC https://padlet.com/cl048/maep1a3ygroi/wish/264858498 Embryological Development cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265067826 Stone Crab: 
  • Eggs lay on the female's abdomen in her egg sack
  • Can hold up to one million eggs
  • Eggs are in a cluster
  • Eggs start out as yellow yolk, but later in development egg yolk will absorbed by the embryo making it clear
  • By stage four the eye begins to take shape
  • By the sixth stage you can see pigment cells throughout embryo
  • Seventh stage is the last before hatching(normally occurs next morning)
  • Hatching occurs when female vigorously pumps abdomen until the embryo membrane breaks
  • Larvae then sims up to surface to gain food
  • Development continues in water column for next month before molting into next stage
  • https://ecurrent.fit.edu/blog/panther-voices/crab-development/
Kauai Shrimp:
  • Mated female has sperm attached to her, and when ready she will release her eggs(spawning)
  • Immediately become fertilized and released to water
  • Once spawned takes 14-18 hours to hatch
  • Go through 3 stages before become a fully formed shrimp
  • Once done the 3 stages, they are fully developed, but stay in the hatchery for 2 more weeks
  • https://www.kauaishrimp.com/page/shrimp-lifecycle

These embryonic developments show the two species relations because both species have their embryos in a huge numbers. Also, both females carry the eggs in a certain pouch beneath her abdomen, and the embryos both start out in a circular egg before going through their stages of development.

]]> 2018-06-01 16:31:36 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265067826 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265083208 2018-06-01 17:47:40 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265083208 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265083366 2018-06-01 17:48:35 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265083366 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265083414 2018-06-01 17:48:49 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265083414 Biochemistry cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265086958 2018-06-01 18:10:49 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265086958 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265087425 2018-06-01 18:14:00 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265087425 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265087632
  • shows how the crustaceans on the tree are closely related through their amino acid numbers
  • Means they have similar proteins when compared to the other organisms on the tree
  • https://www.researchgate.net/figure/Phylogeny-based-on-Bayesian-analysis-of-the-amino-acid-dataset-including-CHH-L-and-ITP-L_fig6_41577466
    • ]]>     2018-06-01 18:15:12 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265087632     cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265088102 2018-06-01 18:17:48 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265088102 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265088139 2018-06-01 18:18:03 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265088139 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265088172 2018-06-01 18:18:16 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265088172 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265088216 2018-06-01 18:18:34 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265088216 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265088245 2018-06-01 18:18:46 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265088245 Fossils cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265162316 Fossil #1: Mesolimulus Walchi Horseshoe Crab Fossil
               Age: 150 million yrs old
               Geological Time: Late Jurassic, Kimmeridgian Stage
    http://www.fossilmuseum.net/Fossil_Sites/solnhofen/wesolimulus/wesolimulus-walchi.htm
    Fossil #2: Burgess Shale Burgessia Arthropod
               Age: 520 million yrs old
               Geological Time:     Early Cambrian
    http://www.fossilmuseum.net/Fossil_Sites/burgessshale/Burgessia/Burgessia.htm
    Fossil #3: Slipper Lobster Fossil
               Age: 93-97 million years old
               Geological Time: Middle Cretaceous or Cenomanian Stage
    http://www.fossilmuseum.net/Fossil_Sites/Lebanese-Lagerstatt/Scyllaridae/Scyllaridae.htm
    Fossil #4: Carpopenaeus Septemspinatus Shrimp Fossil
               Age: 95 million yrs old
               Geological Time: Early Triassic Olenekian Stage
    http://www.fossilmuseum.net/fossils/Invertebrates/Ambilobeia-karojoi/Ambilobeia.htm
    Fossil #5: Decapoda; Ambilobeia Karojoi
               Age: 240 million yrs old
               Geological Time: Early Triassic Olenekian Stage
    http://www.fossilmuseum.net/fossils/Invertebrates/Ambilobeia-karojoi/Ambilobeia.htm 

    These fossils show evolution in the crustacean species because it shows how they must have evolved from a similar species. All these fossils from many different time periods long ago still look almost exactly the same as the species do now. As you can see in the photos all these fossils share a common body part, the tail. The shrimp and lobster tail looks more similar to each other than compared to the horseshoe crab photos, but the tails in the shrimp, lobster, and crab have similar functions. They all help the organisms move around. The lobster and shrimp use theirs for moving in the ocean, and the horseshoe crabs use their tail for moving and digging in the sand.]]>     2018-06-02 17:24:21 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265162316     cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265162944 2018-06-02 17:34:18 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265162944 Burgess Shale cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265162997 2018-06-02 17:35:00 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265162997 Mesolimulus Walchi cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265163095 2018-06-02 17:36:06 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265163095 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265163253 2018-06-02 17:39:21 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265163253 Slipper Lobster cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265163263 2018-06-02 17:39:40 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265163263 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265163341 2018-06-02 17:41:06 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265163341 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265163581 2018-06-02 17:44:57 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265163581 Carpopenaeus Septemspinatus Shrimp cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265163603 2018-06-02 17:45:22 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265163603 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265163753 2018-06-02 17:47:58 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265163753 Ambilobeia Karojoi cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265163817 2018-06-02 17:49:08 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265163817 Anatomy and Physiology cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265165513 All have...
    • Antennae
    • Claws
    • Abdomen
    • Multiple legs
    Lobster and Shrimp...
    • More in common
    • Lobster is like larger version of shrimp
    • Long Abdomen
    • Cylindrical carapace
    • Long antennae
    • Both swim with back tail
    Crab and Lobster...
    • Larger claws
    • Robust legs
    Crab...
    • Small abdomen
    • Short antennae
    • Wide and flat carapace
    All shows they evolved from a similar organism because of the similar characteristics. Even though the crab looks the most unlike the others, it still has all the same body parts just in different forms. It adapted to walk on the ocean floor. The lobster is a mix between the shrimp and crab since it has similar characteristics to both. The lobster can swim with its tail(like shrimp), and walk on the floor with its robust legs(like crab). The shrimp looks like the smaller version of the lobster.

    https://ipfs.io/ipfs/QmXoypizjW3WknFiJnKLwHCnL72vedxjQkDDP1mXWo6uco/wiki/Shrimp.html
    ]]>     2018-06-02 18:26:40 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265165513     cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265165732 2018-06-02 18:30:56 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265165732 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265165792 2018-06-02 18:32:09 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265165792 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265165849 2018-06-02 18:33:44 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265165849 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265166562 2018-06-02 18:48:21 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265166562 cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265167047                       Exemplary Example 1       Exemplary Example 2        Exemplary Example 3   
    Common Name            European Lobster         Gooseneck Barnacle             Fairy Shrimp
    Kingdom                       Animalia                   Animalia                    Animalia
    Phylum                       Crustacea                  Crustacea                   Crustacea
    Class                      Malacostraca               Maxillopoda                 Branchiopoda
    Order                    Decapoda                  Pedunculata                   Anostraca
    Family                     Nephropidae                Pollicipedidae               Parartemiidae         
    Genus                        Homarus                    Pollicipes                   Paratemia
    Species                     Gammarus                    Polymerus                    Contracta

    This shows the relation between the 3 exemplary examples because they all have the same kingdom and phylum. So it shows they must come from a similar ancestor. Once they begin to separate in certain categories that is what causes the small differences between the species.]]>     2018-06-02 18:58:01 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265167047     Evolution in Taxonomic Group cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265167707
  • Taxonomic Group goes through punctuated equilibrium. This is shown through the fossils. The pictures of the fossils look almost identical to how the species do now. So this means the species have not changed in a very long time and go through major periods of stasis. 
  • They've also gone through divergent evolution. My taxonomic group gathered differences in their bodies creating new species which shows divergent evolution. None of the organisms went through convergent evolution because no species developed similar characteristics due to adaptations. 
  • Crustaceans must have gone through genetic drift as well because many of the species have very similar features like lobster and shrimp, but barnacles are still part of the same phylum but are a completely different species. This must be due to a mutation or random change in gene frequency causing the species to be so unique and different. 
  • My taxonomic group could have gone through adaptive radiation too because many of the species contain the same features but have different adaptations due to their habitats and functions, such as the legs of the taxonomic group. Crabs have robust legs to help them dig themselves to hide in the sand and take protection, lobsters use their legs for walking on the bottom of the ocean floor, shrimp use their legs for swimming in the ocean or gathering food, and barnacles use their legs to bring in particles from the ocean to gain nutrients. They must have come from a common ancestor with legs, but then their habitats could have caused adaptation to overtake and cause the legs to be used for many different reasons.
    • ]]>     2018-06-02 19:14:05 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265167707     Darwin's Theory of Evolution cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265169058
  • The descent of modification is shown through my taxonomic group because when an organism has offspring different combinations of genes are passed down making each offspring a little different. A mutation or change in gene frequency could have caused the group to spread off into separate species and still have the same ancestor. They all just have different modifications and looks to their bodies but still have many similarities that can be concluded that they must have come from a similar ancestor.
  • Stabilizing selection works for crustaceans because there was never a huge change in the taxonomic group even from millions of years ago. This means the certain traits that the species already obtain have not needed to change to allow the species to prosper. There is not one type of species in this group with an extreme version of any traits, so the more moderate ones were valued better and never changed.
    • ]]>     2018-06-02 19:46:25 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265169058     cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265169700 2018-06-02 20:02:18 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265169700 PHYLOGENETIC TREE cl048 https://padlet.com/cl048/maep1a3ygroi/wish/265169735 2018-06-02 20:03:04 UTC https://padlet.com/cl048/maep1a3ygroi/wish/265169735