Information about Zoea
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Zoea larva of the European lobster, Homarus gammarus
The zoea is a free-swimming larval stage of crustaceans. It follows the nauplius stage, and precedes the post-larva. Zoea larvae swim with their thoracic appendages (as opposed to nauplii, which use cephalic appendages, and megalopa which use abdominal appendages for swimming). It often has spikes on its carapace which may assist these small organisms in maintaining directional swimming [1]. In many decapods, due to their accelerated development, the zoea is the first larval stage. In some cases the zoea stage is followed by the mysis stage and in others by the megalopa stage, depending of the crustacean group involved.
References
1. ^ Weldon, W. F. R. (1889). Note on the function of the spines of the Crustacean zoea. Journal of the Marine Biological Association of the United Kingdom 1 (2): 169–172.
larva (Latin; plural larvae) is a juvenile form of animal with indirect development, undergoing metamorphosis (for example, insects or amphibians).
The larva can look completely different from the adult form, for example, a caterpillar differs from a butterfly.
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The larva can look completely different from the adult form, for example, a caterpillar differs from a butterfly.
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crustaceans (Crustacea) are a large group of arthropods, comprising approximately 52,000 described species [1], and are usually treated as a subphylum [2].
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A nauplius is the first larva of crustaceans. It consists of a head and a telson; the thorax and abdomen have not developed yet. It has three pairs of appendages with which it swims; these become, in the adult, the antennules, the antennae, and the mandibles.
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An appendage in the broadest sense is an additional or subsidiary part existing on, or added to, something which can generally still function if the appendage has never existed or is later provided or grown, or will still perform a primary function if the appendage is removed.
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A carapace is a dorsal section of an exoskeleton or shell in a number of animal groups.
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Crustaceans
In crustaceans, the carapace is a part of the exoskeleton that covers the cephalothorax. It is particularly well developed in lobsters and crabs...... Click the link for more information.
Decapoda
Latreille, 1802
Suborders
Dendrobranchiata
Pleocyemata
See text for superfamilies.
The decapods or Decapoda are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crayfish,
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Latreille, 1802
Suborders
Dendrobranchiata
Pleocyemata
See text for superfamilies.
The decapods or Decapoda are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crayfish,
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