Nettet22. nov. 2024 · Crayfish are classified as decapod crustaceans. This is the same family group of invertebrate crustaceans that includes prawns, lobsters, crabs and shrimps. There are over 600 species and sub-species of crayfish grouped in 3 main family groups: Astacidae; Cambaridae; and Parastacidae. Nettet29. feb. 2016 · 6. chelipeds. large pinchers, used fro protection and capturing food,2. walking legs. aid in movement, 4, smaller than the chelipeds. how can you tell if a crayfish is a female? if the swimmerets are greatly reduced in size. how can you tell if a crayfish is a male? the swimmerets are enlarged and point anteriorly.

Arthropods: compare crayfish and grasshopper - Studyres

NettetTurn the grasshopper over and view the mouthparts. Find the outside most plate (like an upper lip) which is called the labrum, its opposite is the lower plate (lower lip) called the labium. The moveable mouthparts that look like antennae are the maxilla. Locate them. The mandible is located under the maxilla and is used for chewing. Nettet9. sep. 2011 · It moves from the mouth to other parts of the body Which way does a crayfish move? The movement of crayfish depends on their age. Young crayfish can … money coming out of computer

final lab practical- Goodchild/Hamilton Flashcards Quizlet

Nettet16. des. 2024 · Of the eight pairs of appendages on the cephalothorax, the first three are maxillipeds, which hold food during eating. The chelipeds are the large claws that the … NettetThese are known as “ mandibulate ” mouthparts because they feature prominent chewing mandibles. There are five basic components that form these mouthparts: Labrum — a simple plate-like sclerite that serves as a front lip to help contain the food. Mandibles — a pair of jaws for crushing or grinding the food. NettetA crayfish will use its antennae for touch, taste, and smell, and its antennules for balance, touch, and taste. We also find the mouth parts of the crayfish here. The mandibles are the crushing... ica tour