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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
i like Prawn cocktail but i dont know what it the MOST popular out of Prawn cocktail or Cheese and onilne or ready salt or salt and vinegar
Does molting occur in arthropods at immature stage?
Yes. In most arthropods, molting occurs at the end of every juvenile phase to allow the individual to accumulate more mass and bigger size while still retaining the exoskeleton. Molting usually ends once the animal achieves adult size, such as with insects and many arachnids. In other arthropods, such as with crabs, lobsters and tarantulas, molting continues even in adulthood.
Why is it useful to turn a crayfish on it's side when locating appendages?
to get a better view of the crayfish
What are the benefits of eating prawns?
Lots of Vitamin B (Boosts Immunity), low in fat, rich In protein, Zinc, Iron and Omega 3 fatty acids (Omega 3 lowers blood triglycerides, which are linked to heart disease and stroke).
They contain rather a lot of Cholesterol though.
All in all pretty healthy, but be careful what you cook them in. I guess that most of us would fry them in butter/oil
prawns are free from pesticides as against vegetables. these are get from ocen where chance of pollution is still much less than farms. prawn also improve sexual health as what is good for heart is ewqually good for penis
no they are born hermaphrodites (both genders) and then become female later in life to lay eggs
How is the crayfish adapted for life in water?
Crayfish have developed eyes on short stems that help them see their environment. They have adapted to blend in with their surroundings and have pincers to help them defend themselves.
What are unique characteristics about Kwakiutl's?
The Kwakiutl had many unique characteristics. They carved totem poles that they believed held spirits. So it shows that they had spiritual beliefs. They used their land for clothing, their resources were very important to them.
Krill can eat some small types of zooplankton such as copepods amphibipods and lots more different types of zooplankton
Does a barnacle have bilateral symmetry radial symmetry or is it asymmetrical?
depends on the type of barnacle there different forms with many different types of symmetry. gooseneck barnacles and acorn barnacles are two different types so the question doesn't have an exact answer.
They shouldn't but i think they do because i turned on some music and whene my pill bug came up to the speakers it bounced back so.
No Krill is not a producer because, it does not make it's own food.
Why is it not dangerous for urine to be excreted so close to the eyes and mouth of the crayfish?
this is because it is sanitary and they like the taste.
Do crayfishes eat baked beans?
Whoever asked this question is either dim or mental in the brain.No, crayfishes are not allowed to even eat baked beans, as an ingredient in baked beans can damage their brain and kill them.
Crustaceans (Crustacea) are arthropods. At least one form of crustacean is known as a "bug." The woodlouse, more commonly known as the "pill bug" or "rollie pollie" is a crustacean. Insects are more closely related to crustaceans than they are to any other arthropods.
Where is the crayfishs mouth located?
A crayfish's mouth is located on the bottom side of its head, just behind its antennae. The crayfish has numerous mouth appendages including 2 sets of maxilla, 3 sets of maxillipeds, and mandibles.
Why do krill live in the southern waters of the Antarctic?
This animal -- Euphasia supberba -- is the base of the Southern Ocean's food chain. It is the natural habitat for this animal. Thirty one other species of krill populate other oceans.
Does crustaceans go through complete or gradual metamorphosis?
Crustaceans do not go through complete metamorphosis. Their metamorphosis is gradual and some of the common stages in a complete cycle are omitted. .
How do copepods protect themselves?
Copepods are small crustaceans that live on the surface of other sea and freshwater animals. When a copepod senses danger in their immediate surroundings, they are able to jump extremely high to get away.
What are the major structures in a crustacean?
I am going to assume you are talking about decapod crustaceans, which is the kind most people eat. You can imagine a lobster as I describe the parts, but the description applies generally to all decapods, even crabs. The animal is covered by a chitinous exoskeleton. The shell that makes up the head is called a carapace, and it covers both the animal's head and thorax (similar to your torso). The head and thorax in a lobster have been fused together to form a cephalothorax. The part most people call a tail is actually the abdomen of the animal. Now I'll describe the main appendages on the animal going from front to back. In front, there are 10 walking legs (5 on each side), called pereiopods (pereio = thorax, pod = leg or foot). Usually, at least the first pair are modified at the tips to form chelae(claws). These are always attached to the cephalothorax. There are also appendages attached to the bottom of the abdomen, called pleopods (pleo = abdomen, pod = leg or foot). At the very end of the tail, there are additional flattened appendages which make up the tail fan. The flattened portion are called uropods (uro = tail). The center piece, flat in lobsters, a sharpened tip in shrimp, is called the telson. Crabs are constructed more or less the same way except the abdomen is greatly reduced and folded under the cephalothorax (check it out next time you are eating a crab!).
