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Crustaceans
Usually considered as a subphylum, Crustaceans comprise a group of arthropods including crabs, crayfish, lobsters and shrimp. Most crustaceans are aquatic animals, though some are terrestrial, parasitic and barnacles. Crustaceans have a chitinous exoskeleton, segmented body, and paired jointed limbs.
1,209 Questions
female birds eat them for calcium to make their eggs healthier
What part of the ocean do krill live?
they live in the trench layer. [deepest part of the ocean.] they live next to hydrothermal vents in the ocean. they eat bacteria and mussels that grow on them.
Crustaceans are the only arthropods that have?
Crustaceans have exoskeletons, two pairs of antennae, two pairs of maxillae, biramous legs, and mandibles, which are like jaws.
What do fish use their gills for?
Because they are underwater. They have to get oxygen that is dissolved in the water instead of that available in the air. Fish have an air bladder which controls their buoyancy. Some fish can use it as a lung. When they swim in the water they use their gills. When they are on land, they use their lung.
Are roly poly's harmful to humans?
yes,it consumes some of the roots of the plant rendering them useless, they also eat small leaves well flowers uuum im not sure about that.
Why do crayfish eat each other if they are from same species?
I am not sure, but from what I can conclude from diagrams and from a recent dissection no, the crayfish does not have a liver. Although you should consider asking your biology teacher just to be sure.
How long do pet crayfish live?
The common crayfish (crawfish) lives about 2 or 3 years, but individuals may live to be as old as 8 years. Some rare species can live as long as 20 years.
After reaching 2 years of age, they have usually grown fairly large and have difficulty creating larger shells beyond a certain size. Each new molting makes them more vulnerable to predators.
How do crustaceans obtain food?
To feed, crustaceans take water over their "filters," and then use appendages that "filter" food out of the water.
What does the crayfish use to propel itself through the water?
swim, among other things. Also in males the 1st pair transfer sperm to the female and in the female the 2nd-5th pair hold and fertilize the eggs and young
source: My science teacher
A whale is not a crustacean. A crustacean may be a shrimp, crab, or lobster. They can be found in the water.
How many joints are in a crayfish's leg?
No - or, not "only" six. Lobsters belong to the order Decapoda (literally, 'ten feet'), an order of crustaceans within the class Malacostraca. Remember that the "legs" may have significant specialization and not necessarily resemble a process that the organism uses for walking - such as swimmeretes, or front claws; in this case it might seem the lobster has four pairs of legs for walking (pereiopods) and one pair for grasping and manipulating (chelipeds).
How are crustaceans similar to arachnids?
Arachnids and crustaceans are both arthropods and both have exoskeletons.
What is the difference between scampi and prawn?
it's the same, scampi, shrimp, prawn and gamba are all the same but Italian people call it scampi, spanish people call it gamba's and American people call it shrimp or prawn but in fact it's all the same so it's just confusing.
Why are krill important to the survival of other animals in Antarctica?
I THINK IT IS IMPORTANT BECAUSE IT KEEPS OUR WHALE POPULATION UP AND SO IT DOESN'T DIE OUT.
because krill feed on snow, that's why the snow disappears. Krill only come out when the sun is shining and the day is hot,
also because they are over hunted by the strange "chav" creature
Krill, the niche of krill in my opinion, is to be prey to any other species..............
Is a sea monkey a vertebrate or an invertebrate?
No, Hawaiian Monk Seals are an aquatic mammal, unique to the Hawaiian Islands.
Are crustaceans born with a shell?
Crustaceans emerge from eggs usually as a larval stage that looks nothing like the adult, but yes, they have shells.
Can spiders live in extreme heat?
Yes. They are attracted to the very large thermal signature given off by the human body. The body does not radiate heat evenly, some areas emit heat more then others. This is typically why venomous spider bites are found in the areas that emit the most heat, i.e. nape of neck, arm pit, groin, and scalp.
What is the cephalothorax in a crayfish?
The cephalothorax is the head and the thorax of an insect - generally hard, and it has mainly phosophlipid fatty acids whereas the abdomen is kinda like the *** part of the insect -containing mainly fat (triglycerides). In female insects, the abdomen contains the eggs as well.
Name the country whose name is derived from the word meaning prawns?
Prawns are found in many places, and not from a single country. Prawns are found in the waters of the Pacific, the Atlantic and the Indian Ocean. They are fished and/or farmed by countries around the world. The main producers of prawns are China, Thailand, Vietnam, Indonesia and India, where they are farmed extensively. However, many other countries also farm their own prawns. Australia, Canada, South Africa, Tanzania are just a few of the countries with substantial fresh prawn farms and fresh prawn trawling.
