File:Brachyura_montage.jpg · Wikimedia Commons · See Wikimedia Commons
Brachyura
Sign in to saveAlso known as true crabs, true crab
thumb|Gecarcinus quadratus, a [[land crab from Central America]]
Brachyura is the scientific group that includes all true crabs, which are crustaceans found in oceans, freshwater, and on land around the world. Understanding crabs matters because they play important roles in their ecosystems, serve as food sources for humans and wildlife, and provide insights into how animals adapt to different environments.
AI-generated from the Wikipedia summary — may contain errors.
Species
crabs
Brachyura
FAMILY
- KingdomAnimalia
- PhylumArthropoda
- ClassMalacostraca
- OrderDecapoda
- FamilyBrachyura
Krabbe ist eine Weiterleitung auf diesen Artikel. Weitere Bedeutungen sind unter Krabbe (Begriffsklärung) aufgeführt. Die Krabben (Brachyura) – auch Echte Krabben oder Kurzschwanzkrebse – sind mit ca. 6.800 Arten die größte Infraordnung der Ordnung Zehnfußkrebse (Decapoda). Die meisten Krabbenarten leben im Meer, einige aber auch im Süßwasser (siehe Süßwasserkrabbe) oder an Land. Krabben haben einen zu einer kurzen Schwanzplatte umgebildeten Hinterleib (Pleon), der umgeklappt unter dem Kopfbruststück (Cephalothorax) liegt – der Zwischenraum dient bei den Weibchen als Brutraum. Die männlichen Begattungsorgane (Gonopoden) der Krabben leiten sich von doppelästigen Spaltfüßen ab, wobei letztere sich bei den Weibchen noch als Pleopoden finden (diese werden bei der Brutpflege eingesetzt und können hunderttausende Eier tragen). Bei den Männchen sind Pleopoden rückgebildet oder ganz verschwunden. Nur die beiden ersten Pleopodenpaare sind regelmäßig als Gonopoden erhalten: Das erste Paar ist röhrenartig, das zweite meist fadenförmig und in der Röhre des ersten gelegen, vermutlich nach einem Kolben-Pumpen-Prinzip. Das erste Beinpaar des Rumpfes ist zu großen Scheren umgebildet, die Augen sit
via GBIF
Nutrition · Open Food Facts
Typical values per 100 g · averaged across 22 products
- Energy
- 129 kcal
- Fat
- 0 g
- — of which saturates
- 0 g
- Carbohydrates
- 25.9 g
- — of which sugars
- 4.7 g
- Fibre
- 0 g
- Protein
- 5.9 g
- Salt
- 2.24 g
via Open Food Facts · ODbL
Research
8,544 papers- Convergent Adaptation of True Crabs (Decapoda: Brachyura) to a Gradient of Terrestrial Environments.Systematic biology · 2024Wolfe JM, Ballou L, Luque J et al.DOI: 10.1093/sysbio/syad066
- A new species of Afropinnotheres Manning, 1993 (Crustacea, Brachyura, Pinnotheridae) from southwestern India, the first record of the genus from the Indian Ocean, with a review of the Pinnotheridae of India and adjacent seas.ReviewZootaxa · 2015Ng PK, Kumar ABDOI: 10.11646/zootaxa.3947.2.8
- Shallow-water Trapezioidea (Decapoda: Brachyura) from the South China Sea, including two new records, and notes on Tetralia glaberrima Herbst, 1790.Zootaxa · 2024Sun YL, Jiang W, Sha ZLDOI: 10.11646/zootaxa.5476.1.30
- A review of Chiromantes obtusifrons (Dana, 1851) (Decapoda: Brachyura: Sesarmidae), with descriptions of four new sibling-species from Christmas Island (Indian Ocean), Guam and Taiwan.ReviewZootaxa · 2013Davie PJ, Ng PKDOI: 10.11646/zootaxa.3609.1.1
- Mitogenome selection shaped the terrestrial adaptation of Grapsidae (Decapoda: Brachyura).Gene · 2024Wang Z, Xu Z, Chen H et al.DOI: 10.1016/j.gene.2024.148594
- A new genus and new species of freshwater crab (Decapoda: Brachyura:Gecarcinucidae) from the Central Western Ghats of India.Zootaxa · 2023Pati SK, Bajantri PP, Hegde GDDOI: 10.11646/zootaxa.5285.1.7
- A novel neo-sex chromosome in Sylvietta brachyura (Macrosphenidae) adds to the extraordinary avian sex chromosome diversity among Sylvioidea songbirds.Journal of evolutionary biology · 2022Sigeman H, Zhang H, Ali Abed S et al.DOI: 10.1111/jeb.14096
- Evolutionary history of true crabs (Crustacea: Decapoda: Brachyura) and the origin of freshwater crabs.Molecular biology and evolution · 2014Tsang LM, Schubart CD, Ahyong ST et al.DOI: 10.1093/molbev/msu068
via PubMed
Wikidata facts
- Image
- Goneplax rhomboides 2.jpg
Show 6 more facts
- taxon name
- Brachyura
- Commons category
- Brachyura
- Unicode character
- 🦀
- taxon common name
- Krabben
- MCN code
- 0306.93.00
- taxon author citation
- Latreille, 1802
Sources (2)
via Wikidata · CC0
~18 min read
Article
15 sectionsContents
- Biology
- Description
- Life cycle
- Behaviour
- Evolution
- Fossil history
- Taxonomic history
- External phylogeny
- Internal phylogeny
- Families
- Human consumption
- Fisheries
- Crabs as food
- Cultural influences
- References
thumb|Gecarcinus quadratus, a [[land crab from Central America]]
Brachyura is an infraorder of decapod crustaceans comprising the true crabs. They typically have a very short projecting tail-like abdomen, usually hidden entirely under the thorax. Their exoskeleton is often thickened and hard. They generally have five pairs of legs, and the frontmost pair end in chelae, which function as pincers. They are present in all the world's oceans, in freshwater, and on land, often hiding themselves in small crevices or burrowing into sediment. True crabs are omnivores, feeding on a variety of food, including a significant proportion of algae, as well as detritus and other invertebrates. True crabs are widely consumed by humans as food, with over 1.5 million tonnes caught annually.
Gallery (31)
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