- published: 17 Jul 2012
- views: 86580
Crustaceans (Crustacea /krʌˈsteɪʃə/) form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles.
The 67,000 described species range in size from Stygotantulus stocki at 0.1 mm (0.004 in), to the Japanese spider crab with a leg span of up to 3.8 m (12.5 ft) and a mass of 20 kg (44 lb). Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by the nauplius form of the larvae.
Most crustaceans are free-living aquatic animals, but some are terrestrial (e.g. woodlice), some are parasitic (e.g. Rhizocephala, fish lice, tongue worms) and some are sessile (e.g. barnacles). The group has an extensive fossil record, reaching back to the Cambrian, and includes living fossils such as Triops cancriformis, which has existed apparently unchanged since the Triassic period. More than 10 million tons of crustaceans are produced by fishery or farming for human consumption, the majority of it being shrimp and prawns. Krill and copepods are not as widely fished, but may be the animals with the greatest biomass on the planet, and form a vital part of the food chain. The scientific study of crustaceans is known as carcinology (alternatively, malacostracology, crustaceology or crustalogy), and a scientist who works in carcinology is a carcinologist.
Rhynchocinetes durbanensis, commonly known as the hingebeak prawn, is a species of shrimp (family Rhynchocinetidae) found in the Indo-Pacific. Up to 4 cm (1.6 in) in length, the shrimp has large black eyes, and features red and white lines on a translucent body. It has many white ocelli (spots) as well as a Y-shaped white mark on the upper front part of its carapace. It is strongly sexually dimorphic, and dominant males have larger first pair of chelipeds. The shrimp is found in hollows and crevices from 5 to 35 metres (16 to 115 ft) deep, where it forms groups consisting of dozens of individuals. One study determined that the ovigerous females carry from 267 to 1764 eggs, and the eggs take 9 days to hatch after spawning at a temperature of 29.2 °C (84.6 °F), or 18 days when the temperature is under 22.0 °C (71.6 °F).R. durbanensis has been frequently confused with R. uritai, and also closely resembles R. brucei.R. durbanensis was first described scientifically by Isabella Gordon in 1936.
Spiny lobsters, also known as langouste or rock lobsters, are a family (Palinuridae) of about 60 species of achelate crustaceans, in the Decapoda Reptantia. Spiny lobsters are also, especially in Australia, New Zealand, South Africa, and the Bahamas, sometimes called crayfish, sea crayfish, or crawfish ("kreef" in South Africa), terms which elsewhere are reserved for freshwater crayfish.
The furry lobsters (e.g. Palinurellus) were previously separated into a family of their own, the Synaxidae, but are usually considered members of the Palinuridae. The slipper lobsters (Scyllaridae) are their next-closest relatives, and these two or three families make up the Achelata. Genera of spiny lobsters include Palinurus and a number of anagrams thereof:Panulirus, Linuparus, etc. (Palinurus was also a helmsman in Virgil's Æneid.) In total, 12 extant genera are recognised, containing around 60 living species:
Panulirus versicolor is a species of spiny lobster that lives in tropical reefs. Other names include painted rock lobster, common rock lobster, bamboo lobster, blue lobster, and blue spiny lobster. P. versicolor is one of the three most common varieties of spiny lobster in Sri Lanka, alongside Panulirus homarus and Panulirus ornatus.
P. versicolor grows up to 40 centimetres (16 in) long, but is typically no more than 30 cm (12 in). It has no claws, two spiny rostra over the eyes, and two pairs of large antennae, like all spiny lobsters. The first pair of antennae are double ended, the second hard and spiny, both are usually white. The carapace is white, pink and black, with horizontal bands and a reticule. The abdomen is green with transverse black and white bands. The legs are dark brown with white stripes and the tail is blue-green.
P. versicolor is nocturnal and solitary. In the daytime they hide in small caves and crevices in reefs or under coral at depths up to 15 metres (49 ft). They are carnivores, eating both carrion and fresh caught arthropods, other crustaceans, and occasional small fish.
Rocky Island may refer to:
Crustaceans: Spiny lobsters, shrimps and a swimming crab. Part 13 of my DVD, "Reef Life of the Andaman", available at http://www.bubblevision.com/marine-life-DVD.htm or view the whole 2-hour video at http://www.youtube.com/watch?v=8ncUVddkK3Q This video covers various types of decapod in the subphylum of Crustacea. First we encounter 3 of the most common types of spiny lobster (Palinuridae) found in the Andaman Sea, the painted spiny lobster, Panulirus versicolor, at East of Eden in the Similan Islands in Thailand, the rare ornate spiny lobster, Panulirus ornatus, at Black Rock in the Mergui Archipelago in Burma (Myanmar), and the longlegged spiny lobster, Panulirus longipes, which line the walls of the underwater cave at Western Rocky Island. We then look at shrimps, another type of dec...
(Visit: http://www.uctv.tv/) Crustaceans, with their hard, protective outer skeleton and highly specialized limbs, are truly evolutionary wonders. Join Scripps Oceanography marine biologist Jennifer Taylor as she describes her research on crustacean biomechanics and tells us how 500 million years of evolution has shaped crustaceans into the remarkable array of animals we see on Earth today. Series: "Perspectives on Ocean Science" [8/2014] [Science] [Show ID: 28255]
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Mt. SAC Bio 2 external anatomy of a crayfish
Salve Salve Galerinha Tibiana, nesse vídeo tutorial, eu mostro como domar a crustacea gigantica (titanica), mostro todos os lugares que ela nasce + Bonus de uns amigos domando xD Bom vídeo a todos! Se gostarem não esqueça do like, favorite, compartilhe e se não for inscrito, inscreva-se e fique por dentro de tudo que rola e não deixe se conhecer também nossas redes sociais. Seja um Patrão do Shock Tibiano https://www.patreon.com/shocktibiano Tibia Info www.tibiainfo.ml Tibia www.tibia.com/news/ Vultra vultra.tv/ Flogão www.flogao.com.br/shockbolt Facebook www.facebook.com/ShockTibiano Twitter twitter.com/shocktibiano A Cipsoft é criadora do (MMORPG) online Tibia http://www.cipsoft.com/index.php/en/
DUNIA BINATANG ---------------------------------------------------------------------------------------------- TAYANG SETIAP HARI SENIN-JUM'AT PUKUL 13.35 WIB ---------------------------------------------------------------------------------------------- PART 1 https://youtu.be/HVcIhD9RU74 PART 2 https://youtu.be/xjbXQQB6dyc PART 3 https://youtu.be/bf1TYOIT_QU ---------------------------------------------------------------------------------------------- TRANS7 adalah saluran yang dioperasikan oleh PT. Duta Visual Nusantara Tivi Tujuh bawah TRANSMEDIA yang merupakan salah satu perusahaan media terbesar yang berbasis di Jakarta, Indonesia. TRANS7 kemudian menjadi salah satu saluran televisi paling populer dengan program ikon yang dicintai oleh para penonton segmen lebar. TRANS7 menyiarkan be...
Crustáceos - Anatomia e características
TOPIC: PHYLUM ARTHROPODA CLASS CRUSTACEA Class 1 :- Crustacea 1. They are dominant arthropods of the sea with 2 pairs of antennae and biramous appendages. Head and thorax fused to form cephalothorax. 3. Body with dorsal carapace, Exoskeleton is flexible, impregnated with calcium carbonate salts. 4. Respiration by gills, Respiratory pigment haemocyanin dissolved in plasma with metallic base copper. 5. Excretion by green glands 6. Head consists of 5 segments with a pair of stalked compound eyes 7. Sexes separate CHAPTER 4 ANIMAL KINGDOM CLASS 11TH Get Full Course To Study Offline Through our website: http://www.m-learning.in Call Us at : (+91)9826023696, (+91) 0731-2497432 Mail us at :info@m-learning.in Amazon: http://www.amazon.in/s/ref=lp_5490084031_nr_p_6_3?fst=as%3Aoff&rh;=n...
Video-apunte. Recuerda que estos videos son para incentivar a más búsqueda de información. Características del subfilo crustacea.
I'm always picking petals from
The flower of love to see
If she loves me or
She loves me not
I wonder what's to be
Today, we'll make up but then
Tomorrow, we'll break up again
She can't make up her mind
Will I find the answer
Picking petals from the
Flower of love
I wonder, wonder why she's
Such a honey at first
Then she'll act so funny, it hurts
She changes all the time
Will I find the answer
Picking petals from the
Flower of love
She loves me
She loves me not
I don't know where I stand
Woah, oh, oh
She loves me
She loves me not
She loves me
Will she walk with me
Forever hand in hand
How I pray she's
Really mad about me
That she would be
Sad without me
That's what I hope to find
Will I find she loves me
Picking petals from the
Flower of love
(Will the flower let me know)