PPT-Crayfish

Prelab 2010 United streaming crayfish 1044   Youtube crayfish external anatomy httpwwwyoutubecomwatchvrZ7LF5AkGs 621   internal httpwwwyoutubecomwatchvrpkiNLhCBMUampfeaturerelated. They were introduced purposely into a few Arizona reservoirs and other bodies of water decades ago primarily as a food source for sport fish Unfortunately they have dispersed beyond those original sites on their own and have been acciden tally or in BILL OF FARE Bar Snacks PLATTERS in space. . Principal Investigators:. Julia Ellis, Kasia Kaputska, Gia LaSalle, and Lilyana Walsh. Collaborator: . Bianca Urbina. Teacher Facilitator:. Pamela Wilczynski. Berkeley Heights, New Jersey. Arthropoda. Characteristics. Makes . up . 3/4. . of all animal species. Includes insects, spiders, scorpions, millipedes, centipedes, crabs, lobsters, & crayfish. Arthropod means . ". jointed. Our group is researching, “Which . macroinvertebrate. has the most mercury when compared throughout the trophic pyramid?” . Macroinvertebrates. are insects without a backbone that can be seen with the naked eye.  Mercury is an element that can be found in water, air and soil or sediment. There is more than one specific type of mercury like inorganic, organic, elemental, and metallic (metal). Mercury can also give off toxic vapors which is dangerous for the environment because they are clear, odorless, and invisible, so we don’t even know they are evaporating because we can’t see or smell them. Mercury’s chemical symbol is Hg, which comes from the Latin word . Crayfish are active mainly at night, hiding by day under stones or in crevices in the riverbank. The white-clawed crayfish was once wi Deleted: ST SY 2 4 8 0 6 4S X 4 2 S S 4 6 0 2 8 6 Rivers Brian Helms. 1. and Jim Stoeckel. 2. 1. Department of Biological Sciences. 2. School of Fisheries, Aquaculture, and Aquatic Science. Auburn University, AL 36849. Role of crayfishes in ecosystems. Consumers. Evolutionary Perspective. Metamerism modified by tagmatization. Chitinous exoskeleton. Paired, jointed appendages. Ecdysis. Ventral nervous system. Coelom reduced to cavity around gonads. Open circulatory system. Crayfish. FOSS Structures of Life, TESLA Science Notebooks . Big Idea:. All living organisms have identifiable structures . and characteristics . that . serve . different functions in . growth, survival. Molluscs. and Arthropods. Class . Scaphopoda. . (300 species). tooth shells, tusk shells. all . are burrowing marine animals. most distinctive characteristic – conical shell open at both ends. Class . Video: . https://www.youtube.com/watch?v=3vENk9QPp4M. Crustaceans. All Arthropods have:. Exoskeleton. Jointed legs. Source: https://www.thoughtco.com/subphylum-crustacea-crustaceans-1968439. Crustaceans Basics. Evolutionary Perspective. Metamerism modified by tagmatization. Chitinous exoskeleton. Paired, jointed appendages. Ecdysis. Ventral nervous system. Coelom reduced to cavity around gonads. Open circulatory system. McClanahan,T.R. (1997). Predation and the distribution and abundance of tropical sea ur-chin popuIations.Journal of Experimental Marine, Biology and Ecology221: 231-255.McShane P.E. (1997). A summary Sarah Schieffer, Nicole Bauer, Brandon . Urhammer. , Sarah Bartholomew . Faculty Mentor: Todd Wellnitz, Biology Department. Percent of Rusty Crayfish. Non . sampled . lakes. 0%. 1-40%. 41-80%. 81-100%.