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Tuesday, November 5

  1. 12:19 pm

Wednesday, December 26

  1. page Barnacle (crustacean) edited ... http://www.workplaceinsanity.com/2011/02/mis-managers-how-bad-managers-can.html http://www.al…
    ...
    http://www.workplaceinsanity.com/2011/02/mis-managers-how-bad-managers-can.html
    http://www.alaska-in-pictures.com/enormous-humpback-whale-summer-breaching-6421-pictures.htm
    ...
    a short goose neck,[[#|goose neck]], or are
    Relationship to Humans
    Barnacles attach to solid substrates. This by extension means that they will attach to solid man-made objects and structures in water.
    Some barnacles have also been considered edible by humans (for example goose barnacles are a specialty in Spain and Portugal).
    (J. Molares & J. Freire. "Fisheries and management of the goose barnacle //Pollicipes pollicipes// of Galicia (NW Spain)")
    ...
    of a [[#|[[#|ship]]]][[#|[[#|[[#|ship]]]]]] increase friction
    Barnacles attached to ships are incredibly detrimental to their function, costing up to 125 million dollars for ship owners. Not only is removal costly and difficult, but in just six months times they can grow enough to weigh down the ship to the point of requiring 40-45% more fuel to maintiain cruising speed.
    http://seagrant.gso.uri.edu/factsheets/597barnacle.html
    ...
    Crustaceans typically begin life as eggs that have been fertilized and attached to the outside of an adult's body. For barnacles, after developing into the larval stage, they are dispersed by the adult barnacles. The larvae are similar in form to the adults, but in a very small state. The larvae swim until finding a solid area to colonize, where they then attach themselves, where they grow into adults.[1]
    Unlike most crustaceans, barnacles are sessile as adults, remaining in fixed positions indefinitely.[1] Because of this, Barnacles have developed a special way to produce offspring without a mate; they are hermaphrodites, which means that they have both male and female reproductive organs. They can produce both sperm and eggs.[2]
    ...
    through a [[#|mobile]]mobile larvae stage
    lt it is also important to note that barnacles are hermaphroditic animals, meaning each individual has both a male and female reproductive organ. Also, they do not fertilize by sending their respective gametes straight into the ocean, they do it by actual fertilization and physical reproduction. Because they reproduce through sexual reproduction, barnacles have extremely long penises due to their inability to move from their fixed position.
    {http://www.infoplease.com/images/ESCI296CRUSTA002.jpg}
    ...
    After settling onto a surface, barnacles are sessile, meaning they have taken a fixed position. Afterwards, the barnacles are largely passive in movement. There are discreet movements that it may do in response to presence of food particles. They may extend specialized appendages for specific purposes, such as filtering the food particles from the water as it flows by and moving the particles towards their mouths.[1]
    Sensing the Environment
    ...
    lined with [[#|hairs]]hairs on their
    http://www.microscopy-uk.org.uk/mag/artjan99/barnac.html
    Gas Exchange
    ...
    they lack [[#|cell walls]]cell walls.
    http://www.encyclopedia.com/topic/barnacle.aspx
    Waste Removal
    ...
    "The barnacle has no heart or circulating system as found in higher animals. Body fluids flow through passages among the muscles and other organs in a 'lucunar' circulation."
    http://www.geog.ubc.ca/biodiversity/efauna/BarnaclesofBritishColumbia.html
    ...
    simple open [[#|circulatory system]]circulatory system seen in
    http://www.britannica.com/EBchecked/topic/118569/cirripede/33755/Larval-dispersal (BHu)
    The circulation of blood around the barnacle is not a closed system. The blood fills the entire animal and is pumped around the body.
    (view changes)
    4:59 pm
  2. page Barnacle (crustacean) edited ... http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/M…
    ...
    http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/Maxillopoda/Cirripedia/Balanus_glandula.html
    Classification/Diagnostic Characteristics:
    ...
    as shrimp, [[#|lobster]],lobster, and crabs.
    Barnacles share most of its crucial traits with the other crustaceans, especially the hard, protective exoskeleton. However, barnacles are also unusual, as they are the only members the of crustaceans that are sessile, or inactive, as adults. They are completely stationary. This is because they are permanently attached to a solid substrate. This makes the barnacle a highly unusual crustacean since it is the only crustacean that are sessile and not not move freely on their own, being firmly and permanently attached to a solid surface, unlike shrimps and lobsters.[1]
    http://bio.research.ucsc.edu/people/carr/Raimondi%20Reprints/Barnacle%20chapter%20proofs.pdf
    ...
    Some barnacles have also been considered edible by humans (for example goose barnacles are a specialty in Spain and Portugal).
    (J. Molares & J. Freire. "Fisheries and management of the goose barnacle //Pollicipes pollicipes// of Galicia (NW Spain)")
    ...
    of a [[#|ship]][[#|[[#|ship]]]] increase friction
    Barnacles attached to ships are incredibly detrimental to their function, costing up to 125 million dollars for ship owners. Not only is removal costly and difficult, but in just six months times they can grow enough to weigh down the ship to the point of requiring 40-45% more fuel to maintiain cruising speed.
    http://seagrant.gso.uri.edu/factsheets/597barnacle.html
    ...
    Crustaceans typically begin life as eggs that have been fertilized and attached to the outside of an adult's body. For barnacles, after developing into the larval stage, they are dispersed by the adult barnacles. The larvae are similar in form to the adults, but in a very small state. The larvae swim until finding a solid area to colonize, where they then attach themselves, where they grow into adults.[1]
    Unlike most crustaceans, barnacles are sessile as adults, remaining in fixed positions indefinitely.[1] Because of this, Barnacles have developed a special way to produce offspring without a mate; they are hermaphrodites, which means that they have both male and female reproductive organs. They can produce both sperm and eggs.[2]
    ...
    through a mobile[[#|mobile]] larvae stage
    lt it is also important to note that barnacles are hermaphroditic animals, meaning each individual has both a male and female reproductive organ. Also, they do not fertilize by sending their respective gametes straight into the ocean, they do it by actual fertilization and physical reproduction. Because they reproduce through sexual reproduction, barnacles have extremely long penises due to their inability to move from their fixed position.
    {http://www.infoplease.com/images/ESCI296CRUSTA002.jpg}
    ...
    After settling onto a surface, barnacles are sessile, meaning they have taken a fixed position. Afterwards, the barnacles are largely passive in movement. There are discreet movements that it may do in response to presence of food particles. They may extend specialized appendages for specific purposes, such as filtering the food particles from the water as it flows by and moving the particles towards their mouths.[1]
    Sensing the Environment
    ...
    lined with hairs[[#|hairs]] on their
    http://www.microscopy-uk.org.uk/mag/artjan99/barnac.html
    Gas Exchange
    (view changes)
    4:58 pm
  3. page Barnacle (crustacean) edited ... http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/M…
    ...
    http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/Maxillopoda/Cirripedia/Balanus_glandula.html
    Classification/Diagnostic Characteristics:
    ...
    as shrimp, lobster,[[#|lobster]], and crabs.
    Barnacles share most of its crucial traits with the other crustaceans, especially the hard, protective exoskeleton. However, barnacles are also unusual, as they are the only members the of crustaceans that are sessile, or inactive, as adults. They are completely stationary. This is because they are permanently attached to a solid substrate. This makes the barnacle a highly unusual crustacean since it is the only crustacean that are sessile and not not move freely on their own, being firmly and permanently attached to a solid surface, unlike shrimps and lobsters.[1]
    http://bio.research.ucsc.edu/people/carr/Raimondi%20Reprints/Barnacle%20chapter%20proofs.pdf
    ...
    http://www.workplaceinsanity.com/2011/02/mis-managers-how-bad-managers-can.html
    http://www.alaska-in-pictures.com/enormous-humpback-whale-summer-breaching-6421-pictures.htm
    ...
    as the
    Chthamalus
    Chthamalus Stellatus, or
    acorn
    acorn barnacles shown
    Relationship to Humans
    Barnacles attach to solid substrates. This by extension means that they will attach to solid man-made objects and structures in water.
    Some barnacles have also been considered edible by humans (for example goose barnacles are a specialty in Spain and Portugal).
    (J. Molares & J. Freire. "Fisheries and management of the goose barnacle //Pollicipes pollicipes// of Galicia (NW Spain)")
    ...
    of a ship[[#|ship]] increase friction
    ...
    the bottom scraped.[[#|scraped]]. To prevent
    Barnacles attached to ships are incredibly detrimental to their function, costing up to 125 million dollars for ship owners. Not only is removal costly and difficult, but in just six months times they can grow enough to weigh down the ship to the point of requiring 40-45% more fuel to maintiain cruising speed.
    http://seagrant.gso.uri.edu/factsheets/597barnacle.html
    (view changes)
    4:55 pm
  4. page Barnacle (crustacean) edited ... Barnacles share most of its crucial traits with the other crustaceans, especially the hard, pr…
    ...
    Barnacles share most of its crucial traits with the other crustaceans, especially the hard, protective exoskeleton. However, barnacles are also unusual, as they are the only members the of crustaceans that are sessile, or inactive, as adults. They are completely stationary. This is because they are permanently attached to a solid substrate. This makes the barnacle a highly unusual crustacean since it is the only crustacean that are sessile and not not move freely on their own, being firmly and permanently attached to a solid surface, unlike shrimps and lobsters.[1]
    http://bio.research.ucsc.edu/people/carr/Raimondi%20Reprints/Barnacle%20chapter%20proofs.pdf
    ...
    animals. The appearance,[[#|appearance]], colors, and
    {http://www.google.com/url?source=imglanding&ct=img&q=http://3.bp.blogspot.com/_PX7fseE4voc/TTntk1k3N7I/AAAAAAAAAJQ/LWr4qG6hx_Y/s1600/barnacles9.jpg&sa=X&ei=m4fSUKKtBZOy0AHk9oGICQ&ved=0CAkQ8wc&usg=AFQjCNGy1EFSx_fP3dVD5YmUF0Y8xNIIZQ} Barnacles on a boat {http://www.google.com/url?source=imglanding&ct=img&q=http://www.alaska-in-pictures.com/data/media/3/enormous-whale_6421.jpg&sa=X&ei=N4fSUM-mMKLb0wGz0IGYDg&ved=0CAkQ8wc&usg=AFQjCNEVQnZmiW3KGb9Km6x3fk1TmmjO_Q} Barnacles on a whale
    http://www.workplaceinsanity.com/2011/02/mis-managers-how-bad-managers-can.html
    http://www.alaska-in-pictures.com/enormous-humpback-whale-summer-breaching-6421-pictures.htm
    ...
    as the Chthamalus
    Chthamalus
    Stellatus, or acorn
    acorn
    barnacles shown
    Relationship to Humans
    Barnacles attach to solid substrates. This by extension means that they will attach to solid man-made objects and structures in water.
    ...
    http://www.microscopy-uk.org.uk/mag/artjan99/barnac.html
    Gas Exchange
    ...
    they lack cell walls[[#|cell walls]]
    http://www.encyclopedia.com/topic/barnacle.aspx
    Waste Removal
    ...
    "The barnacle has no heart or circulating system as found in higher animals. Body fluids flow through passages among the muscles and other organs in a 'lucunar' circulation."
    http://www.geog.ubc.ca/biodiversity/efauna/BarnaclesofBritishColumbia.html
    ...
    simple open circulatory system[[#|circulatory system]] seen in
    http://www.britannica.com/EBchecked/topic/118569/cirripede/33755/Larval-dispersal (BHu)
    The circulation of blood around the barnacle is not a closed system. The blood fills the entire animal and is pumped around the body.
    ...
    2. What type of relationship is illustrated by the interaction between the barnacle and a whale?
    3. What are the several functions of a barnacle's cirri?
    4. How do barnacles sense their environment?
    5. How do barnacles feed?

    References
    [1]. Hillis, David M., David Sadava, H. C. Heller, and Mary V. Price. Principles of Life High School Edition. Sunderland, MA: Sinauer Associates, 2012. Print.
    (view changes)
    2:54 pm
  5. page Lancelet (fish-like chordate) edited ... {http://www.biosci.ohiou.edu/introbioslab/Bios173/images/lab8/Lancelet.JPG} Classification/D…
    ...
    {http://www.biosci.ohiou.edu/introbioslab/Bios173/images/lab8/Lancelet.JPG}
    Classification/Diagnostic characteristics
    ...
    dorsal supporting rod[[#|rod]] called the
    {lancelet.gif} A [[#|complete]] display of the anatomy of a lancelet. The organisms has relatively few exterior features that help characterize it.
    {Unknown.jpeg} (Evan Kates)
    ...
    posterior end buried[[#|buried in the sandsand]] and the
    {LanceletAnatomy.gif}
    Lancelets have a fish like appearance, but are invertebrates. They have a notochord and nerve cord. They do not have bones, a brain, and eyes.
    ...
    http://www.grid.unep.ch/bsein/redbook/txt/amphioxu.htm?%20ACRANIA
    Predator avoidance
    ...
    in sandy gravel[[#|gravel]] and keeping
    http://animals.jrank.org/pages/1663/Lancelets-Cephalochordata-BEHAVIOR-REPRODUCTION.html
    {Lancelet.jpg} The Lancelet using a protection method by burrowing in the sand- http://y11evolution.wikispaces.com/file/view/Lancelet.jpg/30729455/Lancelet.jpg {Lancelet.jpg}
    ...
    They uptake oxygen through the pharynx (develops around the pharyngeal slits), as well as, get rid of carbon dioxide and water using it.
    Waste Removal
    ...
    vertebrate nephrons. [Romer, Alfred Sherwood; Parsons, Thomas S. (1977). The Vertebrate Body. Philadelphia, PA: Holt-Saunders International. pp. 18–21.]
    [http://encyclopedia2.thefreedictionary.com/Protonephridium]

    Water, drawn in through the by beating of cilia, is filtered by slender projections around the mouth (oral cirri) and passed through to the gill slits, where food particles in the water are trapped by mucus and the water is filtered out of the atrium. A pouch (hepatic caecum) secretes digestive enzymes, and digestion occurs in a specific region of the intestines (iliocolonic ring). The wastes are then expelled through the anus.
    http://www.ucmp.berkeley.edu/chordata/cephalo.html (BHu)
    (view changes)
    1:51 am
  6. page Barnacle (crustacean) edited ... http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/M…
    ...
    http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/Maxillopoda/Cirripedia/Balanus_glandula.html
    Classification/Diagnostic Characteristics:
    ...
    classified as a crustacean, which
    ...
    that have a hard exoskeletons,exoskeletons protecting the majority of their bodies, segmented bodies,
    ...
    marine athropods. This means that they are almost always found in or near water and wet areas. In addition
    ...
    [1]
    Barnacles share most of its crucial traits with the other crustaceans, especially the hard, protective exoskeleton. However, barnacles are also unusual, as they are the
    ...
    inactive, as adults, noted foradults. They are completely stationary. This is because they are permanently attached to a solid substrate. This makes the barnacle a highly unusual crustacean since it is the only crustacean that are sessile and not not move freely on their stationary life style,own, being firmly and permanently attached to a solid surface, unlike other crustaceans such as shrimp.shrimps and lobsters.[1]
    http://bio.research.ucsc.edu/people/carr/Raimondi%20Reprints/Barnacle%20chapter%20proofs.pdf
    Barnacles are found in saltwater environments and can be identified by their small size and a protective shell-like covering. Many species of barnacles can be seen attached to the hard surfaces of rocks, ships, other structures in long-term contact with saltwater, and even some marine animals. The appearance, colors, and sizes of barnacles differ based on their species.[6]
    ...
    http://www.workplaceinsanity.com/2011/02/mis-managers-how-bad-managers-can.html
    http://www.alaska-in-pictures.com/enormous-humpback-whale-summer-breaching-6421-pictures.htm
    Barnacles are positioned upside down on a substrate and have feathery appendages known as cirra protruding outwards. Barnacles can have stalks, like the goose barnacle, named for its stalk shaped like a short goose neck, or are stalkless and completely protected by a wall of plates, such as the Chthamalus Stellatus, or acorn barnacles shown above.
    Relationship to Humans
    ...
    to solid objects, meaningsubstrates. This by extension means that they
    Some barnacles have also been considered edible by humans (for example goose barnacles are a specialty in Spain and Portugal).
    (J. Molares & J. Freire. "Fisheries and management of the goose barnacle //Pollicipes pollicipes// of Galicia (NW Spain)")
    ...
    the bottom [[#|scraped]].scraped. To prevent
    Barnacles attached to ships are incredibly detrimental to their function, costing up to 125 million dollars for ship owners. Not only is removal costly and difficult, but in just six months times they can grow enough to weigh down the ship to the point of requiring 40-45% more fuel to maintiain cruising speed.
    http://seagrant.gso.uri.edu/factsheets/597barnacle.html
    ...
    http://www.reef.edu.au/asp_pages/secb.asp?FormNo=40
    Reproduction and Life Cycle
    Crustaceans typically [[#|begin]]begin life as
    ...
    developing into athe larval stage,
    Unlike most crustaceans, barnacles are sessile as adults, remaining in fixed positions indefinitely.[1] Because of this, Barnacles have developed a special way to produce offspring without a mate; they are hermaphrodites, which means that they have both male and female reproductive organs. They can produce both sperm and eggs.[2]
    The barnacle goes through a mobile larvae stage and an immobile adult stage. When they first hatch from their eggs, the nauplius (the larvae stage) swims through the water. As the larvae grows in size, they will shed their shell and reach the cyprid stage (final larvae stage). The cyprid then looks for a rocky environment, where they will attach to a rock near other adult barnacles. After settling into their home, the cyprid will then shed one last time, becoming an adult.[3]
    ...
    (http://library.thinkquest.org/J001418/barnacles.html)
    Movement
    BarnaclesAfter settling onto a surface, barnacles are sessile, meaning they have taken a fixed position. Afterwards, the barnacles are largely passive in movement after settling onto a surface.movement. There are
    Sensing the Environment
    Barnacles are lined with hairs on their exteriors that give it a very high sense of touch, allowing them to react accordingly to its environment. Barnacles, when feeling a sense of urgency and predation, will turn themselves over to their other side and create a water system against the ground for themselves. They adapt to the environment they are given.
    (view changes)
    1:48 am

Tuesday, December 25

  1. page Barnacle (crustacean) edited ... https://en.wikipedia.org/wiki/File:Chthamalus_stellatus.jpg {http://www.wallawalla.edu/academ…
    ...
    https://en.wikipedia.org/wiki/File:Chthamalus_stellatus.jpg
    {http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/Maxillopoda/Cirripedia/Balanus_glandula2DLC2005.jpg}
    Balanus glandula barnacles attached to
    http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/Maxillopoda/Cirripedia/Balanus_glandula.html
    Classification/Diagnostic Characteristics:
    ...
    classified as a crustacean, which
    ...
    turn a kindpart of arthropod.[1] More specifically, barnaclesthe phylum arthropoda. Athropods are made of invertebrate organisms that have a hard exoskeletons, segmented bodies, and jointed appendages. Crustaceans are the dominant marine athropods. In addition to barnacles, the crustaceans include organisms such as shrimp, lobster, and crabs. [1]
    Barnacles
    are the only members of the sessile group of crustaceans that are sessile, or inactive, as adults, noted for
    ...
    stationary life style. style, unlike other crustaceans such as shrimp.
    http://bio.research.ucsc.edu/people/carr/Raimondi%20Reprints/Barnacle%20chapter%20proofs.pdf
    ...
    size and a protective shell-like
    {http://www.google.com/url?source=imglanding&ct=img&q=http://3.bp.blogspot.com/_PX7fseE4voc/TTntk1k3N7I/AAAAAAAAAJQ/LWr4qG6hx_Y/s1600/barnacles9.jpg&sa=X&ei=m4fSUKKtBZOy0AHk9oGICQ&ved=0CAkQ8wc&usg=AFQjCNGy1EFSx_fP3dVD5YmUF0Y8xNIIZQ} Barnacles on a boat {http://www.google.com/url?source=imglanding&ct=img&q=http://www.alaska-in-pictures.com/data/media/3/enormous-whale_6421.jpg&sa=X&ei=N4fSUM-mMKLb0wGz0IGYDg&ved=0CAkQ8wc&usg=AFQjCNEVQnZmiW3KGb9Km6x3fk1TmmjO_Q} Barnacles on a whale
    http://www.workplaceinsanity.com/2011/02/mis-managers-how-bad-managers-can.html
    http://www.alaska-in-pictures.com/enormous-humpback-whale-summer-breaching-6421-pictures.htm
    Relationship to Humans
    ...
    to solid human-mademan-made objects and
    Some barnacles have also been considered edible by humans (for example goose barnacles are a specialty in Spain and Portugal).
    (J. Molares & J. Freire. "Fisheries and management of the goose barnacle //Pollicipes pollicipes// of Galicia (NW Spain)")
    (view changes)
    1:09 am

Monday, December 24

  1. page Barnacle (crustacean) edited ... Balanus glandula attached to a cobble http://www.wallawalla.edu/academics/departments/biology…
    ...
    Balanus glandula attached to a cobble
    http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/Maxillopoda/Cirripedia/Balanus_glandula.html
    Classification:Classification/Diagnostic Characteristics:
    A barnacle
    ...
    life style. http://bio.research.ucsc.edu/people/carr/Raimondi%20Reprints/Barnacle%20chapter%20proofs.pdf
    http://bio.research.ucsc.edu/people/carr/Raimondi%20Reprints/Barnacle%20chapter%20proofs.pdf

    Barnacles are found in saltwater environments and can be identified by their small size and protective shell-like covering. Many species of barnacles can be seen attached to the hard surfaces of rocks, ships, other structures in long-term contact with saltwater, and even some marine animals. The appearance, colors, and sizes of barnacles differ based on their species.[6]
    {http://www.google.com/url?source=imglanding&ct=img&q=http://3.bp.blogspot.com/_PX7fseE4voc/TTntk1k3N7I/AAAAAAAAAJQ/LWr4qG6hx_Y/s1600/barnacles9.jpg&sa=X&ei=m4fSUKKtBZOy0AHk9oGICQ&ved=0CAkQ8wc&usg=AFQjCNGy1EFSx_fP3dVD5YmUF0Y8xNIIZQ} Barnacles on a boat {http://www.google.com/url?source=imglanding&ct=img&q=http://www.alaska-in-pictures.com/data/media/3/enormous-whale_6421.jpg&sa=X&ei=N4fSUM-mMKLb0wGz0IGYDg&ved=0CAkQ8wc&usg=AFQjCNEVQnZmiW3KGb9Km6x3fk1TmmjO_Q} Barnacles on a whale
    ...
    http://www.alaska-in-pictures.com/enormous-humpback-whale-summer-breaching-6421-pictures.htm
    Relationship to Humans
    ...
    to solid humanhuman-made objects and
    Some barnacles have also been considered edible by humans (for example goose barnacles are a specialty in Spain and Portugal).
    (J. Molares & J. Freire. "Fisheries and management of the goose barnacle //Pollicipes pollicipes// of Galicia (NW Spain)")
    ...
    http://oceanwildthings.com/2010/01/barnacles-living-on-a-whale/
    In part their poor skeletal preservation is due to their restriction to high-energy environments, which tend to be erosional – therefore it is more common for their shells to be ground up by wave action than for them to reach a depositional setting.[5]
    Predator avoidanceAvoidance
    Barnacle larvae, after being dispersed, will find a variety of areas with a solid space to attach to, in an effort to find some areas that are suitable for colonization, such as areas with few predators.[1]
    Barnacles hide in groups as a predator avoidance mechanism because animals living in groups are more likely to survive than solitary animals. Group behavior can affect the [[#|psychology]] of a barnacle in good ways and bad ways. For example, barnacles living in groups spend less time hiding when faced with a perceived threat than do solitary barnacles. A group is able to spend less time hiding because as a unit, they may be able to fight off the intruder or escape from it. One barncale does not have the strength to fight off a predator such as a mussell or a whelk. So, it may either starve due to lack of foraging or get eaten by the predator. This is how being a member of a group helps. But, they have a flaw too. Barnacles raised in groups may be less tentative of avoiding predators if they encounter one alone. Predators will avoid the barnacles more when the barnacles are in a group because they can lose a lot of valuable energy fighting them. They want to find prey by using as little energy as possible, so they will go off to hunt for something else. Barnacles may think that a predator is actually afraid of them, so when they are alone, they have this same mindset. Of course, the result is pretty ugly.
    ...
    Movement
    Barnacles are largely passive in movement after settling onto a surface. There are discreet movements that it may do in response to presence of food particles. They may extend specialized appendages for specific purposes, such as filtering the food particles from the water as it flows by and moving the particles towards their mouths.[1]
    Sensing the environmentEnvironment
    Barnacles are lined with hairs on their exteriors that give it a very high sense of touch, allowing them to react accordingly to its environment. Barnacles, when feeling a sense of urgency and predation, will turn themselves over to their other side and create a water system against the ground for themselves. They adapt to the environment they are given.
    http://www.microscopy-uk.org.uk/mag/artjan99/barnac.html
    Gas exchangeExchange
    Barnacles facilitate gas exchange through specialized appendages. This exchange primarily happens through the cirri and cell membrane because they lack cell walls
    http://www.encyclopedia.com/topic/barnacle.aspx
    ...
    Nephridia are similar to kidneys and are very common in invertebrates.
    http://library.thinkquest.org/28751/review/animals/8.html
    Environmental Physiology (Temperature, Water, and Salt Regulation)
    {http://www.mesa.edu.au/friends/seashores/images/barnacle.gif}
    Barnacles
    ...
    5. How do barnacles feed?
    References
    1.[1]. Hillis, David
    ...
    2012. Print.
    2.

    [2].
    http://animals.howstuffworks.com/marine-life/barnacle-info.htm
    3.

    [3].
    http://www.mesa.edu.au/friends/seashores/barnacles.html
    4.

    [4].
    http://animals.howstuffworks.com/marine-life/barnacle-info.htm
    5.

    [5].
    William Thomas
    ...
    University Press.
    6.

    [6].
    http://animals.howstuffworks.com/marine-life/barnacle-info.htm
    (view changes)
    10:11 pm
  2. page Slime Mold (protist) edited ... {http://upload.wikimedia.org/wikipedia/commons/a/a0/Slime_Mold_On_Deadwood.JPG} http://commons…
    ...
    {http://upload.wikimedia.org/wikipedia/commons/a/a0/Slime_Mold_On_Deadwood.JPG} http://commons.wikimedia.org/wiki/File:Slime_Mold_On_Deadwood.JPG
    Classification/Diagnostic characteristics
    ...
    forms of slime molds,[[#|slime molds]], plasmodial slime
    ...
    unfavorable conditions. (Prentice([[#|Prentice Hall Biology).Biology]]). Slime molds
    Slime molds formed from the fusion of individual flagellated cells, meaning these cells had flagella organelle. (5).
    Relationship to humans:
    ...
    Habitat and niche
    Plasmodial slime mold covers rocks, decaying logs, and other objects as it engulfs bacteria and food. (1)
    ...
    tends to avoid[[#|avoid]] bright light.
    {http://media.web.britannica.com/eb-media/18/91918-004-EC45A7B7.jpg}
    This image of slime mold illustrates how the species resides in moist environments and are very versatile in respect to where they can proliferate. In this picture, the slime mold is growing on a leaf and extends onto a rotting log beneath the leaf. (http://kids.britannica.com/elementary/art-87679/A-layer-of-slime-mold-covers-leaves-and-a-wet) [GW]
    (view changes)
    2:02 am

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