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Grimalditeuthis
''Grimalditeuthis bonplandi'' is a squid named after the Grimaldi family, reigning house of Monaco. Prince Albert I of Monaco was an amateur teuthologist who pioneered the study of deep sea squids by collecting the 'precious regurgitations' of sperm whales. The specific name ''bonplandi'' refers to the French scientist Aimé Bonpland. The squid was observed alive in the wild for the first time in 2005 in a study. ''Grimalditeuthis bonplandi'' is a bioluminescent species. This species shows an interesting case of aggressive mimicry, with the tips of the long tentacles having the appearance of a small harmless squid. It lures fish and other squids by dangling the tips of the tentacles very far away from its body, then quickly snatching the fooled prey into its death. Intact tentacles suspected to be from this species have been found inside the longnose lancetfish. Distribution This squid has been infrequently encountered, but it is believed to exist worldwide. It lives in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiroteuthidae
The Chiroteuthidae are a family of deep-sea squid, generally small to medium in size, rather soft and gelatinous, and slow moving. They are found in most temperate and tropical oceans, but are known primarily from the North Atlantic, North Pacific, and Indo-Pacific. The family is represented by approximately 12 species and four subspecies in four genera, two of which are monotypic. They are sometimes known collectively as whip-lash squid, but this common name is also applied to the Mastigoteuthidae, which are sometimes treated as a subfamily (Mastigoteuthinae) of Chiroteuthidae. The monotypic genus '' Grimalditeuthis'' was once (and may still be) given its own family, Grimalditeuthidae. Generally speaking, chiroteuthids are not well represented by described specimens, because they are so often damaged during capture. Description The Chiroteuthidae are most notable for their unique paralarval stage, known as the doratopsis stage. Although morphology varies greatly withi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aimé Bonpland
Aimé Jacques Alexandre Bonpland (; 22 August 1773 – 11 May 1858) was a French explorer and botanist who traveled with Alexander von Humboldt in Latin America from 1799 to 1804. He co-authored volumes of the scientific results of their expedition. Biography Bonpland was born as Aimé Jacques Alexandre Goujaud in La Rochelle, France, on 22, 28,. or 29 August 1773. His father was a physician and, around 1790, he joined his brother Michael in Paris, where they both studied medicine. From 1791, they attended courses given at Paris's Botanical Museum of Natural History. Their teachers included Jean-Baptiste Lamarck, Antoine Laurent de Jussieu, and René Louiche Desfontaines; Aimé further studied under Jean-Nicolas Corvisart and may have attended classes given by Pierre-Joseph Desault at the Hôtel-Dieu. During this period, Aimé also befriended his fellow student, Xavier Bichat. Amid the turmoil of the French Revolution and Revolutionary Wars, Bonpland served as a surg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Joubin
Louis Marie Adolphe Olivier Édouard Joubin (27 February 1861 in Épinal – 24 April 1935 in Paris) was a professor at the Muséum national d'Histoire naturelle in Paris. He published works on nemerteans, chaetognatha, cephalopods, and other molluscs. He served as an assistant to Henri de Lacaze-Duthiers, subsequently becoming director of the laboratories at Banyuls-sur-Mer (1882) and Roscoff (1884). Later on, he became an instructor at the University of Rennes,Prosopo Sociétés savantes and in 1903 succeeded Edmond Perrier as ''chaire des mollusques, des vers et des zoophytes'' at the |
Mantle Length
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] |
Cephalopod Genera
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 ide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squid
True squid are molluscs with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting these criteria. Like all other cephalopods, squid have a distinct head, bilateral symmetry, and a mantle. They are mainly soft-bodied, like octopuses, but have a small internal skeleton in the form of a rod-like gladius or pen, made of chitin. Squid diverged from other cephalopods during the Jurassic and occupy a similar role to teleost fish as open water predators of similar size and behaviour. They play an important role in the open water food web. The two long tentacles are used to grab prey and the eight arms to hold and control it. The beak then cuts the food into suitable size chunks for swallowing. Squid are rapid swimmers, moving by jet propulsion, and largely locate their prey by sight. They are among the most intelligent o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider-tailed Horned Viper
The spider-tailed horned viper (''Pseudocerastes urarachnoides''), also known as the spider-snake, is a species of viper, a venomous snake, in the family Viperidae and genus ''Pseudocerastes''. The genus is commonly known as "false-horned vipers". The species is endemic to western Iran and over the border region with Iraq, and was originally described in 2006. The head looks very similar to that of other ''Pseudocerastes'' species in the region, but the spider-tailed horned viper has a unique tail that has a bulb-like end that is bordered by long drooping scales that give it the appearance of a spider. (''Pseudocerastes urarachnoides'', new species). The tail tip is waved around and used to lure insectivorous birds to within striking range. Etymology The specific name, ''urarachnoides'', is derived from Ancient Greek ( tail + spider + like), and refers to this snake's spider-like tail tip, as does the common name, spider-tailed horned viper. Description Like other vipers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
False Cleanerfish
The false cleanerfish (''Aspidontus taeniatus'') is a species of combtooth blenny, a mimic that copies both the dance and appearance of ''Labroides dimidiatus'' (the bluestreak cleaner wrasse), a similarly colored species of cleaner wrasse. It likely mimics that species to avoid predation, as well to occasionally bite the fins of its victims rather than consume parasites. Most veiled attacks occur on juvenile fish, as adults that have been attacked in the past may avoid or even attack ''A. taeniatus.'' It is indigenous to coral reef habitats in the Indo-Pacific. Mimicry Appearance The false cleanerfish primarily lives in coral reef margins among the cleaning stations of the bluestreak cleaner wrasse (''Labroides dimidiatus''), and are usually seen near locations of one or more ''L. dimidiatus.'' With its territory primarily overlapping with its model fish, the false cleanerfish mimics both the appearance and occasionally the behavior of said fish. Though ''A. taeniatus'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alligator Snapping Turtle
The alligator snapping turtle (''Macrochelys temminckii'') is a large species of turtle in the family Chelydridae. The species is native to freshwater habitats in the United States. ''M. temminckii'' is one of the heaviest freshwater turtles in the world. It is the largest freshwater species of turtle in North America. It is often associated with, but not closely related to, the common snapping turtle, which is in the genus ''Chelydra''. The specific epithet ''temminckii'' is in honor of Dutch zoologist Coenraad Jacob Temminck. Taxonomy Although it was once believed that only one extant species exists in the genus ''Macrochelys'', recent studies have shown that there are two species, the other being the Suwannee snapping turtle (''M. suwanniensis'') of the Suwannee River. A third species, the Apalachicola snapping turtle (''M. apalachicolae''), has been proposed, but is generally not recognized. The alligator snapping turtle is given its common name because of its immen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anglerfish
The anglerfish are fish of the teleost order Lophiiformes (). They are bony fish named for their characteristic mode of predation, in which a modified luminescent fin ray (the esca or illicium) acts as a lure for other fish. The luminescence comes from symbiotic bacteria, which are thought to be acquired from seawater, that dwell in and around the sea. Some anglerfish are notable for extreme sexual dimorphism and sexual symbiosis of the small male with the much larger female, seen in the suborder Ceratioidei, the deep sea anglerfish. In these species, males may be several orders of magnitude smaller than females. Anglerfish occur worldwide. Some are pelagic (dwelling away from the sea floor), while others are benthic (dwelling close to the sea floor). Some live in the deep sea (such as the Ceratiidae), while others on the continental shelf, such as the frogfishes and the Lophiidae (monkfish or goosefish). Pelagic forms are most often laterally compressed, whereas the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tentacles
In zoology, a tentacle is a flexible, mobile, and elongated organ present in some species of animals, most of them invertebrates. In animal anatomy, tentacles usually occur in one or more pairs. Anatomically, the tentacles of animals work mainly like muscular hydrostats. Most forms of tentacles are used for grasping and feeding. Many are sensory organs, variously receptive to touch, vision, or to the smell or taste of particular foods or threats. Examples of such tentacles are the eyestalks of various kinds of snails. Some kinds of tentacles have both sensory and manipulatory functions. A tentacle is similar to a cirrus, but a cirrus is an organ that usually lacks the tentacle's strength, size, flexibility, or sensitivity. A nautilus has cirri, but a squid has tentacles. Invertebrates Molluscs Many molluscs have tentacles of one form or another. The most familiar are those of the pulmonate land snails, which usually have two sets of tentacles on the head: when exte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photophores
A photophore is a glandular organ that appears as luminous spots on various marine animals, including fish and cephalopods. The organ can be simple, or as complex as the human eye; equipped with lenses, shutters, color filters and reflectors, however unlike an eye it is optimized to produce light, not absorb it. The bioluminescence can variously be produced from compounds during the digestion of prey, from specialized mitochondrial cells in the organism called photocytes ("light producing" cells), or, similarly, associated with symbiotic bacteria in the organism that are cultured. The character of photophores is important in the identification of deep sea fishes. Photophores on fish are used for attracting food or for camouflage from predators by counter-illumination. Photophores are found on some cephalopods including the firefly squid, which can create impressive light displays, as well as numerous other deep sea organisms such as the pocket shark Mollisquama mississ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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