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Decapoda
Sign in to saveA decapod is a crustacean in the large order of Decapoda (from Ancient Greek δεκάς (dekás), meaning "ten", and πούς (poús), meaning "foot"), within the class Malacostraca, including crabs, lobsters, crayfish, shrimp, and prawns. Most decapods are scavengers. The order is estimated to contain nearly 15,000 extant species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (about 3,000 species) and Anomura including hermit crabs, king crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. The
Decapoda is a large order of crustaceans that includes crabs, lobsters, crayfish, shrimp, and prawns, named for their ten legs. With nearly 15,000 living species, decapods are among the most diverse and abundant crustaceans on Earth, and most play important roles as scavengers in their ecosystems.
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Species
decapods
Decapoda
ORDER
- KingdomAnimalia
- PhylumArthropoda
- ClassMalacostraca
- OrderDecapoda
Τα Δεκάποδα είναι τάξη καρκινοειδών εντός της ομοταξίας Μαλακόστρακα. Περιλαμβάνει τα καβούρια, τους αστακούς, τις γαρίδες και τις καραβίδες. Εκτιμάται ότι περιλαμβάνει 15.000 είδη σε περίπου 2.700 γένη, και έχουν βρεθεί 3.300 απολιθωμένα είδη. Σχεδόν τα μισά από αυτά τα είδη είναι καβούρια, ενώ από τα υπόλοιπα οι μεγαλύτερες ομάδες είναι οι γαρίδες και τα ανόμουρα (όπως οι ερημίτες κάβουρες). Το παλαιότερο απολιθωμένο δεκάποδο είναι ο Παλαιοπαλαιμόν, από το Δεβόνιο. Όπως υπονοεί και το όνομά τους, όλα τα δεκάποδα έχουν δέκα πόδια, με τη μορφή πέντε ζευγών θωρακικών εξαρτημάτων στα πέντε τελευταία θωρακικά τμήματα. Τα μπροστινά τρία λειτουργούν ως τμήματα του στόματος και γενικά αναφέρονται ως γναθόποδα, τα υπόλοιπα είναι τα περειόποδα. Σε πολλά δεκάποδα, το πρώτο ζεύγος φέρει μεγάλες δαγκάνες. Άλλα εξαρτήματα υπάρχουν στην κοιλιά, με κάθε τμήμα να μπορεί να φέρει ένα ζεύγος πλεόποδων, με τα δύο τελευταία να αποτελούν το ουριαίο πτερύγιο (μαζί με το τέλσον) και αποκαλούνται ουρόποδα.
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Research
28,239 papers- B chromosomes in Crustacea Decapoda.ReviewCytogenetic and genome research · 2004Coluccia E, Cannas R, Cau A et al.DOI: 10.1159/000079290
- Abundance and Diversification of Repetitive Elements in Decapoda Genomes.Genes · 2023Rutz C, Bonassin L, Kress A et al.DOI: 10.3390/genes14081627
- Spermiogenic histone transitions and chromatin decondensation in Decapoda.Theriogenology · 2020Chen T, Mu S, Sun Z et al.DOI: 10.1016/j.theriogenology.2020.07.003
- Abbreviation of larval development and extension of brood care as key features of the evolution of freshwater Decapoda.ReviewBiological reviews of the Cambridge Philosophical Society · 2013Vogt GDOI: 10.1111/j.1469-185X.2012.00241.x
- Comparative mitogenomics of the Decapoda reveals evolutionary heterogeneity in architecture and composition.Scientific reports · 2019Tan MH, Gan HM, Lee YP et al.DOI: 10.1038/s41598-019-47145-0
- Potamalpheops yamakawai n. sp., representing the first record of the genus from Japan (Decapoda: Caridea: Alpheidae).Zootaxa · 2024Yamashita R, Komai T, Koreeda RDOI: 10.11646/zootaxa.5555.1.6
- Glypturus ferox, a new species of ghost shrimp (Decapoda: Axiidea: Callichiridae) from the Ryukyu Islands, southwestern Japan.Zootaxa · 2024Sato T, Komai T, Shimizu NDOI: 10.11646/zootaxa.5432.3.3
- Comparison of Mitochondrial Genome Sequences between Two Palaemon Species of the Family Palaemonidae (Decapoda: Caridea): Gene Rearrangement and Phylogenetic Implications.Genes · 2023Sun Y, Chen J, Ye Y et al.DOI: 10.3390/genes14071499
via PubMed
Wikidata facts
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~6 min read
Article
6 sectionsContents
- Anatomy
- Evolution
- Classification
- See also
- References
- External links
A decapod is a crustacean in the large order of Decapoda (from Ancient Greek δεκάς (dekás), meaning "ten", and πούς (poús), meaning "foot"), within the class Malacostraca, including crabs, lobsters, crayfish, shrimp, and prawns. Most decapods are scavengers. The order is estimated to contain nearly 15,000 extant species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (about 3,000 species) and Anomura including hermit crabs, king crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. The earliest fossils of the group date to the Devonian.
==Anatomy==
Gallery (31)
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