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Altruism and Group Behaviour

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Altruism and Group Behaviour
Biology 25IB
Altruism and Group Behaviour

I wonder…

Assignment

Individually, using academic sources research and answer the following question.

Explore animal group behavior. Select 5 different organisms from 5 different phyla and simple explore animal group behavior. Include altruism in at least 2 of your descriptions.

NOTE: There is no right or wrong answer. I want you to interpret the question and answer it using at least 3 different sources. Two of your sources have to be academic, and I want all of your sources cited correctly in APA format.

Altruism is defined as the instinctive behavior of an organism that is detrimental to the individual but favors the survival or spread of that individual’s genes, as benefitting its relatives.

Hapalochlaena maculosa – Blue Ringed Octopus (Phyla: Mollusca)

The blue-ringed octopuses are one of the most developed invertebrates with a well-developed brain and eye structure. They can be up to 12 centimeters in length and are usually camouflaged, with yellow, brown and grey bodies. These octopuses typically reside in reef flats or tidal pools and will generally live in community like structures. Their populations will live amongst the same general area. They can hardly be spotted due to their greatness when it comes to camouflage skills. They will feed on fish and crustaceans. This would be done by killing their prey through a potent toxic injection with their bite. They are extremely venomous and can even cause human death. These creatures will deliver a warning before they bite. When they are irritated or disturbed, they quickly turn a brilliant blue shade in their rings. They display altruism when they are mating with partner. After the entire process of mating has taken place between the male and the female, the female will lay thousands of eggs. She will then carry them under her arms for about six months until they begin to hatch. At this point, the female will die. This occurs in every



References: Blue-ringed octopus. (n.d.). Marine Parks WA. Retrieved May 26, 2013, from http://www.marineparks.wa.gov.au/fun-facts/94-blue-ringed-octopus.html Dickerson, N. (n.d.). Jellyfish Behavior. Jellyfish - Jellyfish Facts. Retrieved May 27, 2013, from http://www.jellyfishfacts.net/jellyfish-behavior.html Prairie Dog Coalition - Black Tailed Prairie Dog. (n.d.). Prairie Dog Coalition - for the life of the prairie. Retrieved May 26, 2013, from http://www.prairiedogcoalition.org/pd-black-tailed-prairie-dog.php Prairie Dogs. (n.d.). ThinkQuest : Library. Retrieved May 27, 2013, from http://library.thinkquest.org/TQ0312800/dog.htm Sea Star. (n.d.). URI 's Environmental Data Center. Retrieved May 27, 2013, from http://www.edc.uri.edu/restoration/html/gallery/invert/sea.htm

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