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Crayfish
Crayfish (also called crawfish or crawdads) are freshwater crustaceans that look like a small lobster. Crayfish feed on plants, frog eggs, insects, and small fish. Crawfish boils and dishes with crayfish in them are very common in Louisiana. Louisiana supplies about 95% of the crayfish harvested in the US.
529 Questions
After my crawfish gave birth it's not moving?
Your crawfish is probably just still in shock, or done with giving birth and its recooperating, just like humans do after birth. Dont worry, she will probably come to.
What is the function of the extensor muscle in the crayfish?
serve to give him (or her) mobility - moving legs and such.
Will crawfish make a dog sick?
Crawfish can make a dog sick - the crawfish can carry E. coli, Salmonella and several parasites that can infect or infest your dog. I have heard of one dog that had a very difficult to treat intestinal worm problem, but the parents couldn't figure out where the dog got the worms from. The parents eventually figured out that their two boys were having crawfish races in the back yard and were feeding the losers of each race to the dog.
What is the cinus in the thorax of a crayfish?
What you are referring to is the sinus. The crayfish's gills are used to extract oxygen that is dissolved in water and lead it into the crayfish's open circulatory system. This type of circulatory system doesn't limit the blood to blood vessels; instead the blood collects in the pericardial sinus, the cavity surrounding the dorsal heart. (Porch and Batdorf 477) From there the dorsal heart pumps the blood through short vessels, which empty into internal cavities and bathe the organs. After the blood bathes the organs and drains from these cavities, it flows into the large sternal sinus. The blood then passes through the gills, becomes oxygenated, and returns to the pericardial. The green glands, located near the base of the antennae, filter out waste as the blood circulates. Then the waste is excreted through a pore just in front of the Crayfish's mouth.
Reference:
Bob Jones University-Thomas E. Porch, and Brad R. Batdorf. Biology. Greenville, South Carolina: BJU Press, 2005.
Many things eat crayfish like sea eagles, sharks and larger fish
What is the Irish equivalent of crawdads?
Another name for crawdads is crayfish. The white-clawed crayfish (Austropotamobias Pallipes) is found in Ireland.
What is the advantage of the gills being attached to walking legs on crayfish?
to survive in shallow water
Yes, crawfish can eat bread, but it is not a natural part of their diet. In the wild, they primarily consume plant material, detritus, and small aquatic organisms. Bread can serve as an occasional treat or bait, but it should not be a staple in their diet, as it lacks the necessary nutrients they need to thrive.
How might mouth parts of various shapes be adaptive for crayfish?
There are many advantages of various shapes of mouths from a Cray fish. This can allow them to eat different food than other ones of their kind.
How do maxillipeds help crawfish?
Maxillipeds in crawfish serve primarily as feeding appendages, helping to manipulate and bring food to their mouth. These structures also aid in sensing the environment, as they are equipped with sensory receptors. Additionally, maxillipeds can assist in locomotion and grooming, contributing to the overall well-being and survival of the crawfish.
How are crayfish suited to their environment?
Crayfish are well adapted to their aquatic environments, possessing gills that allow them to efficiently extract oxygen from water. Their hard exoskeleton provides protection from predators and physical damage, while their strong, clawed appendages enable them to forage for food and defend themselves. Additionally, crayfish have a flexible diet, consuming detritus, plants, and small animals, which helps them thrive in a variety of freshwater habitats. Their ability to burrow into the substrate also allows them to escape harsh conditions and predators.
Where do the nerves go from each ganglion on a crayfish?
In crayfish, each ganglion in the ventral nerve cord gives rise to paired nerves that innervate specific body segments and appendages. The thoracic ganglia primarily control the walking legs and other thoracic structures, while abdominal ganglia regulate the muscles and functions of the abdomen. These nerves branch out to provide motor control and sensory input, facilitating movement and response to the environment. Overall, the ganglia coordinate the crayfish's locomotion and physiological processes.
