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Ameloctopus
''Ameloctopus litoralis'' is a species of octopus in the family Octopodidae. It belongs to the monotypic genus ''Ameloctopus''. It is found in shallow waters in tropical Australia and lacks an ink sack. ''Ameloctopus litoralis'' lays large eggs Humans and human ancestors have scavenged and eaten animal eggs for millions of years. Humans in Southeast Asia had domesticated chickens and harvested their eggs for food by 1,500 BCE. The most widely consumed eggs are those of fowl, especial ... compared to other octopuses. References * Norman, M. D. (1992). ''Ameloctopus litoralis'' gen. et sp. nov. (Cephalopoda: Octopodidae), a new shallow-water octopus from tropical Australian waters. Invertebrate Taxonomy, 6 . pp. 567–582. Octopodidae Monotypic mollusc genera {{Octopus-stub ... [...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] |
Mark Norman (marine Biologist)
Mark Douglas Norman is a marine biologist living in southern Australia, where he works through the University of Melbourne and Museum Victoria. For over a decade, Norman has been working exclusively with cephalopods and he is one of the leading scientists in the field, having discovered over 150 new species of octopuses. The best known of these is probably the mimic octopus 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 .... Mark Norman is the author of ''Cephalopods: A World Guide'', a book published in 2000 containing over 800 colour photographs of cephalopods in their natural habitat. References Australian marine biologists Teuthologists Living people Year of birth missing (living people) {{Biologist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octopus
An octopus ( : octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Like other cephalopods, an octopus is bilaterally symmetric with two eyes and a beaked mouth at the center point of the eight limbs. The soft body can radically alter its shape, enabling octopuses to squeeze through small gaps. They trail their eight appendages behind them as they swim. The siphon is used both for respiration and for locomotion, by expelling a jet of water. Octopuses have a complex nervous system and excellent sight, and are among the most intelligent and behaviourally diverse of all invertebrates. Octopuses inhabit various regions of the ocean, including coral reefs, pelagic waters, and the seabed; some live in the intertidal zone and others at abyssal depths. Most species grow quickly, mature ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopod Ink
Cephalopod ink is a dark-coloured or luminous ink released into water by most species of cephalopod, usually as an escape mechanism. All cephalopods, with the exception of the Nautilidae and the Cirrina (deep-sea octopuses), are able to release ink to confuse predators. The ink is released from the ink sacs (located between the gills) and is dispersed more widely when its release is accompanied by a jet of water from the siphon. Its dark color is caused by its main constituent, melanin. Each species of cephalopod produces slightly differently coloured inks; generally, octopuses produce black ink, squid ink is blue-black, and cuttlefish ink is a shade of brown. A number of other aquatic molluscs have similar responses to attack, including the gastropod clade known as sea hares. Types of ink shapes The shapes taken by ink releases are classified as six types: * pseudomorphs; * pseudomorph series; * ink ropes; * clouds/smokescreens; * diffuse puffs; * mantle fills. Inking be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Egg (biology)
An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the animal hatches. Most arthropods such as insects, vertebrates (excluding live-bearing mammals), and mollusks lay eggs, although some, such as scorpions, do not. Reptile eggs, bird eggs, and monotreme eggs are laid out of water and are surrounded by a protective shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a warm and favorable temperature range while the embryo grows. When the embryo is adequately developed it hatches, i.e., breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark and was in size. Whale shark eggs typically hatch within the mother. At and up to , the o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
