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F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
( R e d i r e c t e d f r o m T a n a i d )
The crustacean order Tanaidacea (known as tanaids ) make up a minor group within the class Malacostraca . There are about 940 species in this order.
Description [ edit ]
Tanaids are small, shrimp-like creatures ranging from 0.5 to 120 millimetres (0.020 to 4.7 in ) in adult size, with most species being from 2 to 5 millimetres (0.08 to 0.2 in ). Their carapace covers the first two segments of the thorax . There are three pairs of limbs on the thorax; a small pair of maxillipeds , a pair of large clawed gnathopods , and a pair of pereiopods adapted for burrowing into the mud. Unusually among crustaceans, the remaining six thoracic segments have no limbs at all, but each of the first five abdominal segments normally carry pleopods . The final segment is fused with the telson and carries a pair of uropods .[1]
The gills lie on the inner surface of the carapace. The thoracic limbs wash water towards the mouth, filtering out small particles of food with the mouthparts or maxillipeds. Some species actively hunt prey, either as their only food source, or in combination with filter feeding.[1]
Habitat [ edit ]
Most are marine, but a handful are also found in freshwater . They live buried in bottom sediments, sometimes in self-built tubes.[2]
Life cycle [ edit ]
Tanaids do not undergo a true planktonic stage . The early developmental period is spent while young are within the marsupium of the mother. Subsequently, post-larvae, called mancas , emerge as epibenthic forms. Some species are hermaphroditic .[1]
Taxonomy [ edit ]
The oldest representatives of the group are known from the Carboniferous , with modern forms emerging during the Mesozoic .[2]
The order Tanaidacea is divided into the following sub-orders, superfamilies and families:[3]
Family Niveotanaidae † Polz, 2005
Suborder Apseudomorpha
Superfamily Apseudoidea Leach, 1814 (incl. former superfamily Jurapseudoidea[4]
Family Apseudellidae Gutu, 1972
Family Apseudidae Leach, 1814
Family Eucryptocaridae Heard et al. 2020
Family Gigantapseudidae Kudinova-Pasternak, 1978
Family Jurapseudidae † Schram, Sieg & Malzahn, 1986
Family Kalliapseudidae Lang, 1956
Family Metapseudidae Lang, 1970
Family Numbakullidae Gutu & Heard, 2002
Family Ophthalmapseudidae Heard et al. 2020
Family Pagurapseudidae Lang, 1970
Family Pagurapseudopsididae Gutu, 2006
Family Parapseudidae Gutu, 1981
Family Protoapseudoidae Heard et al. 2020
Family Sphaeromapseudidae Larsen, 2012
Family Sphyrapodidae Gutu, 1980
Family Tanzanapseudidae Bacescu, 1975
Family Whiteleggiidae Gutu, 1972
Genus Palaeotanais Reiff, 1936
Suborder Tanaidomorpha
Superfamily Neotanaoidea Sieg, 1980
Superfamily Paratanaoidea Lang, 1949
Family Agathotanaidae Lang, 1971
Family Akanthophoreidae Sieg, 1986
Family Alavatanaidae † Vonk & Schram, 2007
Family Anarthruridae Lang, 1971
Family Colletteidae Larsen & Wilson, 2002
Family Cryptocopidae Sieg, 1977
Family Heterotanoididae Bird, 2012
Family Leptocheliidae Lang, 1973
Family Leptognathiidae Sieg, 1976
Family Mirandotanaidae Blazewicz-Paszkowycz & Bamber, 2009
Family Nototanaidae Sieg, 1976
Family Paratanaidae Lang, 1949
Family Paratanaoidea incertae sedis
Family Pseudotanaidae Sieg, 1976
Family Pseudozeuxidae Sieg, 1982
Family Tanaellidae Larsen & Wilson, 2002
Family Tanaissuidae Bird & Larsen, 2009
Family Tanaopsidae Błażewicz-Paszkowycz & Bamber, 2012
Family Teleotanaidae Bamber, 2008
Family Typhlotanaidae Sieg, 1984
Superfamily Tanaidoidea Nobili, 1906
References [ edit ]
^ WoRMS (2018). "Tanaidacea" . World Register of Marine Species . Retrieved May 7, 2018 .
^ Richard W. Heard; Andrés G. Morales-Núñez; María de Lourdes Serrano-Sánchez; Marco A. Coutiño; Ricardo Barragán; Francisco J. Vega (2020). "A new family, genus and species of Tanaidacea (Crustacea; Apseudomorpha) from the Lower Cretaceous (Aptian) of Chiapas, Mexico: Systematic revisions , including designation of two new Paleozoic families, and paleoenvironmental observations" . Journal of South American Earth Sciences . 102 : Article 102609. doi :10.1016/j.jsames.2020.102609
External links [ edit ]
Tanaidacea at Wikispecies
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Tanaidacea&oldid=1189286597 " C a t e g o r i e s : ● T a n a i d a c e a ● C r u s t a c e a n o r d e r s H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● A r t i c l e s w i t h ' s p e c i e s ' m i c r o f o r m a t s ● A r t i c l e s w i t h J 9 U i d e n t i f i e r s ● A r t i c l e s w i t h N D L i d e n t i f i e r s
● T h i s p a g e w a s l a s t e d i t e d o n 1 0 D e c e m b e r 2 0 2 3 , a t 2 2 : 3 3 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
Data related to Tanaidacea at Wikispecies
