ARTHROPODA ANATOMY AND DIVERSITY IN PERSON 21922 N O I T A T N E S E R P E L T I T CRAYFISH EXTERNAL ANATOMY 2 N O I T A T N E S E R P E L T I T MALE VS FEMALE CRAYFISH 1 Size males tend to be larger than females 2 Abdomen Shape in males the abdomen is narrow and tapers at the end Female abdomens are wider 3 Gonopods males have specialized structures called gonopods which are modified swimmerets located and more rounded on the underside of their abdomen 3 N O I T A T N E S E R P E L T I T CRAYFISH INTERNAL ANATOMY 4 CRUSTACE A COLLAGE N O I T A T N E S E R P E L T I T 5 REFLECTIO N N O I T A T N E S E R P E L T I T Overall crayfish play a multifaceted role in the environment culture and economy making them ecologically and economically important 1 Help control algae detritus and aquatic plant growth 2 They are harvested for human consumption in many regions contributing to the economy 6 N O I T A T N E S E R P E L T I T DIVERSITY OF CRUSTACEA The diversity of crustaceans is a reflection of their adaptation to a wide range of ecological niches and Decapods this group includes crabs lobsters shrimp habitats and crayfish Isopods Often called pill bugs or woodlice Copepods tiny planktonic crustaceans 7