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Rhynchocinetes Durbanensis
''Rhynchocinetes durbanensis'', commonly known as the camel shrimp and the hingebeak prawn, is a species of shrimp (family Rhynchocinetidae) found in the Indo-Pacific. Up to 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 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 Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, ''to spawn'' refers to the process of releasing the eggs and sperm, and the act of both sexes is called spawning. Most aquatic animals, except for aquat ... at a temperature of , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isabella Gordon
Isabella Gordon OBE FZS FLS (18 May 1901 – 11 May 1988) was a Scottish marine biologist who specialised in carcinology and was an expert in crabs and sea spiders. She worked at the Natural History Museum and received an OBE in 1961. Early life and education Gordon was born in Keith, Scotland on 18 May 1901, the eldest child of Margaret (''née'' Lamb) and James Gordon. She attended Keith Grammar School before going to the University of Aberdeen in 1918. As she had limited funds to support her education she took positions as a student demonstrator in zoology. She graduated from the University with BSc in zoology. She also completed training in primary and science teaching at Aberdeen Teachers' Training College. In 1923 she was awarded the Kilgour Research Scholarship and studied alcyonaria. She then took up postgraduate research scholarship at Imperial College which led to her PhD in the embryology of end echinoderms. She continued her research into echinoderms in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caridea
The Caridea, commonly known as caridean shrimp or true shrimp, are an infraorder of shrimp within the order Decapoda. This infraorder contains all species of true shrimp. They are found widely around the world in both fresh and salt water. Many other animals with similar names – such as the mud shrimp of Axiidea and the boxer shrimp of Stenopodidea – are not true shrimp, but many have evolved features similar to true shrimp. Biology Carideans are found in every kind of aquatic habitat, with the majority of species being marine. Around a quarter of the described species are found in fresh water, however, including almost all the members of the species-rich family Atyidae and the Palaemonidae subfamily Palaemoninae. They include several commercially important species, such as ''Macrobrachium rosenbergii'', and are found on every continent except Antarctica. The marine species are found at depths to , and from the tropics to the polar regions. In addition to the great variety ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchocinetidae
The family Rhynchocinetidae are a group of small, reclusive red-and-white shrimp. This family typically has an upward-hinged foldable rostrum, hence its taxon name ''Rhynchocinetidae'', which means ''movable beak''; this gives these shrimps their common name of hinge-beak shrimps. The family contains only two genera, '' Cinetorhynchus'' and '' Rhynchocinetes''. Taxonomy Rhynchocinetidae has historically been considered to include the single genus ''Rhynchocinetes'', which was subdivided into two sub-genera. However, in 1995, Holthuis elevated the subgenus ''Cinetorhynchus'' to full generic status based on morphology. Members of ''Rhynchocinetes'' have two acute teeth on the central carina of the carapace, a supraorbital spine and no spine on the margins of the fourth and fifth abdominal somites. ''Cinetorhynchus'' differs in having three teeth on the carapace, no supraorbital spine and a single spine each on the margins of the fourth and fifth abdominal somites. Description Memb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indo-Pacific
The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the seas connecting the two in the general area of Indonesia. It does not include the temperate and polar regions of the Indian and Pacific oceans, nor the Tropical Eastern Pacific, along the Pacific coast of the Americas, which is also a distinct marine realm. The term is especially useful in marine biology, ichthyology, and similar fields, since many marine habitats are continuously connected from Madagascar to Japan and Oceania, and a number of species occur over that range, but are not found in the Atlantic Ocean. The region has an exceptionally high species richness, with the world's highest species richness being found in at its heart in the Coral Triangle, and a remarkable gradient of decreasing species richness radiating outward ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carapace
A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the underside is called the plastron. Crustaceans In crustaceans, the carapace functions as a protective cover over the cephalothorax (i.e., the fused head and thorax, as distinct from the abdomen behind). Where it projects forward beyond the eyes, this projection is called a rostrum. The carapace is calcified to varying degrees in different crustaceans. Zooplankton within the phylum Crustacea also have a carapace. These include Cladocera, ostracods, and isopods, but isopods only have a developed "cephalic shield" carapace covering the head. Arachnids In arachnids, the carapace is formed by the fusion of prosomal tergites into a single plate which carries the eyes, ocularium, ozopores (a pair of openings of the scent gland of Opiliones) a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheliped
A chela ()also called a claw, nipper, or pinceris a pincer-like organ at the end of certain limbs of some arthropods. The name comes from Ancient Greek , through New Latin '. The plural form is chelae. Legs bearing a chela are called chelipeds. Another name is ''claw'' because most chelae are curved and have a sharp point like a claw. Chelae can be present at the tips of arthropod legs as well as their pedipalps. Chelae are distinct from spider chelicerae in that they do not contain venomous glands and cannot distribute venom. See also * Pincer (biology) * Pincer (tool) Pincers are a hand tool used in many situations where a mechanical advantage is required to pinch, cut or pull an object. Pincers are first-class levers, but differ from pliers in that the concentration of force is either to a point, or to a ... References Arthropod anatomy {{Arthropod-anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spawn (biology)
Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, ''to spawn'' refers to the process of releasing the eggs and sperm, and the act of both sexes is called spawning. Most aquatic animals, except for aquatic mammals and reptiles, reproduce through the process of spawning. Spawn consists of the reproductive cells (gametes) of many aquatic animals, some of which will become fertilized and produce offspring. The process of spawning typically involves females releasing ova (unfertilized eggs) into the water, often in large quantities, while males simultaneously or sequentially release spermatozoa ( milt) to fertilize the eggs. Most fish reproduce by spawning, as do most other aquatic animals, including crustaceans such as crabs and shrimps, molluscs such as oysters and squid, echinoderms such as sea urchins and sea cucumbers, amphibians such as frogs and newts, aquatic insects such as mayflies and mosquitoes and corals, which are actually sma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchocinetes Uritai
''Rhynchocinetes uritai'' also known as the camel shrimp, camelback shrimp, or dancing shrimp is a non-aggressive crustacean of the family Rhynchocinetidae. They are saltwater shrimp, and are common in saltwater aquariums. Description The camel shrimp is a hardy saltwater shrimp, It is covered with red and white stripes that run across its entire body. ''R. uritai'' has a movable rostrum or beak that is generally facing upwards. Male camel shrimp have larger chelipeds or claw compared to the female camel shrimp. The claw is formed when the shrimp reaches maturity. Ecology ''Rhynchocinetes uritai'' is found under cracks and crevasses, coral deposits, and rock caves because those habitats provide safe cover from predators. They are often seen with other camel shrimp in their habitat. The common predators of ''Rhynchocinetes uritai'' are herring, salmon, sculpin and flatfishes. ''Rhynchocinetes uritai'' is a carnivorous shrimp and it feeds on detritus, phytoplankton, z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynchocinetes Brucei
''Rhynchocinetes'' is a genus of shrimp, containing the following 14 species: *'' Rhynchocinetes albatrossae'' Chace, 1997 *'' Rhynchocinetes australis'' Hale, 1941 *'' Rhynchocinetes balssi'' Gordon, 1936 *'' Rhynchocinetes brucei'' Okuno, 1994 *''Rhynchocinetes conspiciocellus'' Okuno & Takeda, 1992 *''Rhynchocinetes durbanensis'' Gordon, 1936 *''Rhynchocinetes enigma'' Okuno, 1997 *''Rhynchocinetes holthuisi'' Okuno, 1997 *''Rhynchocinetes ikatere'' Yaldwyn, 1971 *''Rhynchocinetes kuiteri'' Tiefenbacher, 1983 *''Rhynchocinetes rathbunae'' Okuno, 1996 *''Rhynchocinetes serratus'' (H. Milne-Edwards, 1837) *'' Rhynchocinetes typus'' H. Milne-Edwards, 1837 – type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specime ... *'' Rhynchocinetes uritai'' Kubo, 1942 References C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have been described previously or are related. In order for species to be validly described, they need to follow guidelines established over time. Zoological naming requires adherence to the ICZN code, plants, the ICN, viruses ICTV, and so on. The species description often contains photographs or other illustrations of type material along with a note on where they are deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million species have been identified and described, out of some 8.7 million that may actually exist. Millions more have become extinct throughout the existence of life on Earth. Naming process A name of a new species becomes valid (available in z ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
