PPT-Crayfish

Abdomen   The abdomen is the segmented tail area The swimmerets telson and uropods are attached to the abdomen Carapace   The protective shell exoskeleton of the cephalothorax Cephalic groove. 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 Manual calipers are used by sliding the movable arm so the jaws of the ca lipers fit around the carapace The main reading 1 mm is read by finding the closest value above the 582065834858207573475772557718573475775457690576305734757717577255779257602 East NSW November 2013 , Primefact 1327 , first edition Fisheries Ecosystems Unit, Port Stephens Fisheries Institute I ntroduction North e ast NSW is home to several species of freshwater crayfish, DISSECTION. . Animal Groups. Image from: http://ology.amnh.org/biodiversity/treeoflife/pages/graph.html. ARTHROPODA. “Arthro” = jointed. “pod” = foot. Arthropods. Structures. to identify in lab. ) and identification. Crayfish. Crayfish. Phylum: . Arthropoda. Subphlum. : . Crustacea. Class: Malacostraca. Order: . Decapoda. Crayfish. Order: . Decapoda. Families: . Parastacidae. (South America & Australia). Prelab. 2010. United streaming: crayfish 10:44.  . Youtube. - crayfish external anatomy. http://www.youtube.com/watch?v=rZ-7LF5AkGs. 6.21.  . internal. http://www.youtube.com/watch?v=rpkiNLhCBMU&feature=related. 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. Are changes in physical forms or behaviors brought about by natural selection that enable an organism to better survive in its natural habitat.. Many adaptations have to do with getting food and oxygen, moving or staying in one place. 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. Evolutionary Perspective. Metamerism modified by tagmatization. Chitinous exoskeleton. Paired, jointed appendages. Ecdysis. Ventral nervous system. Coelom reduced to cavity around gonads. Open circulatory system. Class . Scaphopoda. . (300 species). tooth shells, tusk shells. all . are burrowing marine animals. most distinctive characteristic – conical shell open at both ends. Class . Monoplacophora. undivided arched shell. McClanahanTR 1997 Predation and the distribution and abundance of tropical sea ur-chin popuIationsJournal of Experimental Marine Biology and Ecology221 231-255McShane PE 1997 A summary of commercial c 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%.