name = Peracarida

image_width = 250px
image_caption = "Eophreatoicus" (a fresh water isopod from Australia)
regnum = Animalia
phylum = Arthropoda
subphylum = Crustacea
classis = Malacostraca
subclassis = Eumalacostraca
superordo = Peracarida
superordo_authority = Calman, 1904
subdivision_ranks = Orders
subdivision =







The superorder Peracarida is a large group of crustaceans, having members in marine, freshwater, and terrestrial habitats. They are defined by the possession of a single pair of maxillipeds (rarely 2–3), of mandibles with an articulated accessory process between the molar and incisor teeth in the adults (called the "lacinia mobilis"), of a carapace which is often reduced in size and is not fused with the posterior thoracic somites. In all orders except the Thermosbaenacea, where the carapace is used to brood eggs, the basalmost segments of the legs bear thin flattened plates (oostegites) which enclose a ventral brood pouch, known as a "marsupium". The young hatch at a post-larval, prejuvenile stage called a "manca" which lacks the last pair of legs.


*cite journal |year=1904 |title=On the Classification of the Crustacea Malacostraca |journal=The Annals and Magazine of Natural History, including Zoology, Botany, and Geology |volume=13 |issue=74 |pages=144–158 |author=W. T. Calman
*cite book |url= |title=An Updated Classification of the Recent Crustacea |author=Martin, J. W. & Davis, G. E. |year=2001 |pages=132 pp. |publisher=Natural History Museum of Los Angeles County

External links

* [ Peracarida fact sheet - Guide to the marine zooplankton of south eastern Australia]

Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Peracarida —   [griechisch], die Ranzenkrebse …   Universal-Lexikon

  • Peracarida — Peracarida, Überordnung der zu den ⇒ Crustacea gehörenden Klasse der ⇒ Malacostraca. Die P. durchlaufen eine direkte Entwicklung im Marsupium, einem beim f auf der Bauchseite des Thorax gelegenen Brutbeutel. Wichtige Ordnungen: Mysidacea im Meer… …   Deutsch wörterbuch der biologie

  • Peracarida — Ranzenkrebse Australische Wasserassel Systematik Überstamm: Urmünder (Protostomia) Überstamm …   Deutsch Wikipedia

  • Peracarida — Peracar …   Wikipédia en Français

  • peracarida — pera·car·i·da …   English syllables

  • peracarida — ˌperəˈkarədə noun plural Usage: capitalized Etymology: New Latin, from Greek pēra pouch, bag + New Latin carida (from Latin carid , caris, a kind of sea crab) more at caris : a division of Malacostraca including among others the amphipods and… …   Useful english dictionary

  • Надотряд Перакариды (Peracarida) —          Этот обширный надотряд объединяет очень различных как по внешнему виду, так и по образу жизни ракообразных, обитающих в море, в пресных водах и на суше, ползающих по дну и плавающих в толще воды, большей частью свободноживущих, но… …   Биологическая энциклопедия

  • Brood pouch (Peracarida) — The marsupium or brood pouch, in peracarida such as amphipods, isopods or cumaceans, is an egg chamber formed by the ventral plates. These are appendices which are attached to the coxae of the first pereopods. Females lay their eggs directly into …   Wikipedia

  • Péracaride — Peracarida Peracarida …   Wikipédia en Français

  • περακάριδα — (peracarida). Υπερτάξη μαλακόστρακων καρκινοειδών. Έχουν ρύγχος ακίνητο και το περίβλημα τους εμπλουτίζεται, σε μικρό όμως βαθμό, με ανθρακικό ασβέστιο. Τα σπερματοζωάρια των π. είναι νηματοειδή. Τα θηλυκά τοποθετούν τα αβγά τους σ’ έναν… …   Dictionary of Greek

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”