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Macrotritopus Defilippi
''Macrotritopus defilippi'', commonly known as the Lilliput longarm octopus or the Atlantic longarm octopus, is a small species of octopus, a marine cephalopod mollusc of the order Octopoda. This species occurs in the Atlantic Ocean, the Mediterranean Sea and the Indian Ocean. Its typical habitat is shallow sandy areas. Its yellowish-brown colouration enables it to blend into its surroundings making it well-camouflaged when stationary. In the Caribbean it has been found that when it moves around, it does so in such a way as to closely resemble the swimming behaviour of the plate fish (''Bothus lunatus''), a bottom-dwelling flounder which inhabits the same waters. Description ''Macrotritopus defilippi'' is a small octopus with relatively long arms and a mantle length of up to . As is the case in most octopuses, the skin is variable in colour. It is usually either plain or speckled and closely matches the colour of its surroundings, the sandy plains on which it lives. Where the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Baptiste Vérany
Chevalier Jean Baptiste Vérany (1800, in Nice – 1865) was a French pharmacist and naturalist who specialised in the study of cephalopods. In 1846, with Jean-Baptiste Barla (1817–1896), he founded the Muséum d'histoire naturelle de Nice. Vérany discovered and described many species. André Étienne d'Audebert de Férussac named ''Chiroteuthis veranyi'' for him. See also *:Taxa named by Jean Baptiste Vérany Works Partial list: * 1842 – Illustrations. ''Isis von Oken'', pp. 252–253. * 1844 – Description de deux genres nouveaux de mollusques nudibranches. ''Revue Zoologique par la Societe Cuvierienne'', pp. 302–303. * 1845 – Janus spinolae. ''Guerin Magazin de Zoologie'', series 2, 7:121-122, pl. 136. * 1846 – Descrizione di Genova e del Genovesato 1(2): ''Regno Animale Molluschi'', pp. 90–110, pls. 2-4. * 1846 – Catalogo degli animali invertebrati marini del golfo di Genova e Nizza. ''Est. dulla Guida di Genova'' 3: 1-30 * 1849 – Descripti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plate Fish
The plate fish (''Bothus lunatus'') is a flounder in the genus ''Bothus'', found in the warmer parts of the Atlantic including the Caribbean. Its typical habitat is sandy plains near coral reefs and it is able to change its colouring to make it well-camouflaged in this environment. It is sometimes known as the peacock flounder, a name also given to the closely related '' Bothus mancus'' from the Indo-Pacific. Description ''Bothus lunatus'' has a laterally flattened body and orientates itself so that its right side is underneath and its left side is uppermost. Both eyes are on this upper surface and project on short thick stalks. The body shape is rounded and the dorsal and anal fins nearly surround the body. The former has 92 to 99 soft rays and the latter 71 to 76. The pectoral fins are long and often erect. An average adult length is about , with a maximum length of . The upper surface of this flounder is some shade between grey, brown and tan with small blue spots and circular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopods Described In 1851
A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, and a set of arms or tentacles (muscular hydrostats) modified from the primitive molluscan foot. Fishers sometimes call cephalopods "inkfish", referring to their common ability to squirt ink. The study of cephalopods is a branch of malacology known as teuthology. Cephalopods became dominant during the Ordovician period, represented by primitive nautiloids. The class now contains two, only distantly related, extant subclasses: Coleoidea, which includes octopuses, squid, and cuttlefish; and Nautiloidea, represented by ''Nautilus'' and ''Allonautilus''. In the Coleoidea, the molluscan shell has been internalized or is absent, whereas in the Nautiloidea, the external shell remains. About 800 living species of cephalopods have been identified. Tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octopodidae
The Octopodidae comprise the family containing the majority of known octopus species. Genera The World Register of Marine Species lists these genera: *'' Abdopus'' Norman & Finn, 2001 *'' Ameloctopus'' Norman, 1992 *'' Amphioctopus'' P. Fischer, 1882 *'' Callistoctopus'' Taki, 1964 *'' Cistopus'' Gray, 1849 *'' Euaxoctopus'' Voss, 1971 *'' Galeoctopus'' Norman, Boucher & Hochberg, 2004 *'' Grimpella'' Robson, 1928 *'' Hapalochlaena'' Robson, 1929 *'' Histoctopus'' Norman, Boucher-Rodoni & Hochberg, 2009 *'' Lepidoctopus'' Haimovici & Sales, 2019 *'' Macrochlaena'' Robson, 1929 *''Macroctopus'' Robson, 1928 *'' Macrotritopus'' Grimpe, 1922 *''Octopus'' Cuvier, 1798 *'' Paroctopus'' Naef, 1923 *''Pinnoctopus ''Pinnoctopus'' is a genus of octopuses in the family (biology), family Octopodidae. It is of doubtful validity. Species * ''Pinnoctopus cordiformis'' (Jean René Constant Quoy, Quoy and Joseph Paul Gaimard, Gaimard, 1832. ''nomen dubium'' * '' ...'' d'Orbigny, 1845 *'' Pt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thaumoctopus Mimicus
The mimic octopus (''Thaumoctopus mimicus'') is a species of octopus from the Indo-Pacific region. Like other octopuses, it uses its chromatophores to disguise itself with its background. However, it is noteworthy for being able to impersonate a wide variety of other marine animals.Maculay, G. (January 6, 2012)"Mimic Octopus Creature Feature - Diving with Mimics" Dive The World - Scuba Diving Vacations - Dive Travel - Diving Holidays - Liveaboards. Retrieved April 21, 2013. Although many animals mimic either their environment or other animals to avoid predation, the mimic octopus and its close relative the wunderpus are the only ones known to actively imitate a number of animals in order to elude predators.Harmon, K. (February 21, 2013)"Mimic Octopus Makes Home on Great Barrier Reef" ''Scientific American''. Retrieved April 21, 2013. Appearance The mimic octopus is a smaller octopus, growing to a total length of about , including arms, with a diameter approximately that of a penc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abdopus Aculeatus
''Abdopus aculeatus'' is a small octopus species in the order Octopoda. ''A. aculeatus'' has the common name of algae octopus due to its typical resting camouflage, which resembles a gastropod shell overgrown with algae. It is small in size with a mantle around the size of a small orange (≈7 cm) and legs 25 cm in length, and is adept at mimicking its surroundings. ''A. aculeatus'' has been described as "the only land octopus", because it lives on beaches, walking from one tidal pool to the next as it hunts for crab. Many octopuses can crawl short distances on land when necessary, but no others do so routinely. World range and habitat Algae octopuses are found throughout intertidal zones along the Indonesian, Philippine, and Northern Australian coastlines. They primarily live in areas with abundant sea grass coverage and occupy dens built into the sandy seafloor, which they line with small pebbles. In its resting camouflage, ''A. aculeatus'' displays mottled ochre, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mimicry
In evolutionary biology, mimicry is an evolved resemblance between an organism and another object, often an organism of another species. Mimicry may evolve between different species, or between individuals of the same species. Often, mimicry functions to protect a species from predators, making it an anti-predator adaptation. Mimicry evolves if a receiver (such as a predator) perceives the similarity between a mimic (the organism that has a resemblance) and a model (the organism it resembles) and as a result changes its behaviour in a way that provides a selective advantage to the mimic. The resemblances that evolve in mimicry can be visual, acoustic, chemical, tactile, or electric, or combinations of these sensory modalities. Mimicry may be to the advantage of both organisms that share a resemblance, in which case it is a form of mutualism; or mimicry can be to the detriment of one, making it parasitic or competitive. The evolutionary convergence between groups is driven by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disruptive Coloration
Disruptive coloration (also known as disruptive camouflage or disruptive patterning) is a form of camouflage that works by breaking up the outlines of an animal, soldier or military vehicle with a strongly contrasting pattern. It is often combined with other methods of crypsis including background colour matching and countershading; special cases are coincident disruptive coloration and the disruptive eye mask seen in some fishes, amphibians, and reptiles. It appears paradoxical as a way of not being seen, since disruption of outlines depends on high contrast, so the patches of colour are themselves conspicuous. The importance of high-contrast patterns for successful disruption was predicted in general terms by the artist Abbott Thayer in 1909 and explicitly by the zoologist Hugh Cott in 1940. Later experimental research has started to confirm these predictions. Disruptive patterns work best when all their components match the background. While background matching works best ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leucophore
Chromatophores are cells that produce color, of which many types are pigment-containing cells, or groups of cells, found in a wide range of animals including amphibians, fish, reptiles, crustaceans and cephalopods. Mammals and birds, in contrast, have a class of cells called melanocytes for coloration. Chromatophores are largely responsible for generating skin and eye colour in ectothermic animals and are generated in the neural crest during embryonic development. Mature chromatophores are grouped into subclasses based on their colour (more properly "hue") under white light: xanthophores (yellow), erythrophores (red), iridophores (reflective / iridescent), leucophores (white), melanophores (black/brown), and cyanophores (blue). While most chromatophores contain pigments that absorb specific wavelengths of light, the color of leucophores and iridophores is produced by their respective scattering and optical interference properties. Some species can rapidly change colour through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mantle (mollusc)
The mantle (also known by the Latin word pallium meaning mantle, robe or cloak, adjective pallial) is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself. In many species of molluscs the epidermis of the mantle secretes calcium carbonate and conchiolin, and creates a shell. In sea slugs there is a progressive loss of the shell and the mantle becomes the dorsal surface of the animal. The words mantle and pallium both originally meant cloak or cape, see mantle (vesture). This anatomical structure in molluscs often resembles a cloak because in many groups the edges of the mantle, usually referred to as the ''mantle margin'', extend far beyond the main part of the body, forming flaps, double-layered structures which have been adapted for many different uses, including for example, the siphon. Mantle cavity The ''mantle cavity'' is a central fea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flounder
Flounders are a group of flatfish species. They are demersal fish, found at the bottom of oceans around the world; some species will also enter estuaries. Taxonomy The name "flounder" is used for several only distantly related species, though all are in the suborder Pleuronectoidei (families Achiropsettidae, Bothidae, Pleuronectidae, Paralichthyidae, and Samaridae). Some of the better known species that are important in fisheries are: * Western Atlantic ** Gulf flounder – ''Paralichthys albigutta'' ** Southern flounder – ''Paralichthys lethostigma'' ** Summer flounder (also known as ''fluke'') – ''Paralichthys dentatus'' ** Winter flounder – ''Pseudopleuronectes americanus'' * European waters **European flounder – ''Platichthys flesus'' ** Witch flounder – ''Glyptocephalus cynoglossus'' * North Pacific ** Halibut – ''Hippoglossus stenolepis'' ** Olive flounder – ''Paralichthys olivaceus'' Eye migration Larval flounder are born with one eye on each side o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use. Along its core, the Indian Ocean has some large marginal or regional seas such as the Arabian Sea, Laccadive Sea, Bay of Bengal, and Andaman Sea. Etymology The Indian Ocean has been known by its present name since at least 1515 when the Latin form ''Oceanus Orientalis Indicus'' ("Indian Eastern Ocean") is attested, named after Indian subcontinent, India, which projects into it. It was earlier known as the ''Eastern Ocean'', a term that was still in use during the mid-18th century (see map), as opposed to the ''Western Ocean'' (Atlantic Ocean, Atlantic) before the Pacific Ocean, Pacific was surmised. Conversely, Ming treasure voyages, Chinese explorers in the Indian Oce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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