|
Lebrunia Danae
''Lebrunia neglecta'' is a species of sea anemone in the family Aliciidae. It is found in the Caribbean Sea and Gulf of Mexico. Description ''Lebrunia neglecta'' is an unusual sea anemone in that its tentacles are almost hidden by the ring of six much branching large frond-like pseudotentacles that grow up from the rim of the oral disc. These are some shade of pale or darker brown and have densely branched tips. Below these, on the side of the frond are small, whitish spherical vesicles containing nematocysts that are powerful enough to sting a human. After contact with a prey item, the pseudotentacles retract and the tentacles, which are also armed with nematocysts, grasp the prey and draw it into the mouth. The column of the anemone is usually invisible, being anchored in a crevice. This species can grow to a diameter of . It is very similar in appearance to the closely related '' Lebrunia coralligens'', but the pseudotentacles of that species are much less branched, and often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Édouard Placide Duchassaing De Fontbressin
Édouard Placide Duchassaing de Fontbressin (1819 in Moule, Guadeloupe – 1873 in PĂ©rigueux) was a French naturalist. He is noted for his work in botany and spongiology. A native of Guadeloupe, he studied zoology, geology and medicine in Paris. Afterwards, he returned to Guadeloupe as a physician, spending his free time conducting research of the island's flora. Subsequently, he visited several other islands of the Antilles, eventually relocating as a physician to Santa Marta, Panama (1848), from where he studied the natural history of the isthmus, sending his plant specimens to Wilhelm Gerhard Walpers, a botanist in Berlin (these specimens later became the property of August Grisebach).JSTOR Global Plants biography Around 1850, he obtained a medical degree at |
Symbiodinium
: ''This is about the genus sometimes called Zoox. For the company, see Zoox (company)'' ''Symbiodinium'' is a genus of dinoflagellates that encompasses the largest and most prevalent group of endosymbiotic dinoflagellates known. These unicellular microalgae commonly reside in the endoderm of tropical cnidarians such as corals, sea anemones, and jellyfish, where the products of their photosynthetic processing are exchanged in the host for inorganic molecules. They are also harbored by various species of demosponges, flatworms, mollusks such as the giant clams, foraminifera ( soritids), and some ciliates. Generally, these dinoflagellates enter the host cell through phagocytosis, persist as intracellular symbionts, reproduce, and disperse to the environment. The exception is in most mollusks, where these symbionts are intercellular (between the cells). Cnidarians that are associated with ''Symbiodinium'' occur mostly in warm oligotrophic (nutrient-poor), marine environments where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animals Described In 1860
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinoderms and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brittle Star
Brittle stars, serpent stars, or ophiuroids (; ; referring to the serpent-like arms of the brittle star) are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their flexible arms for locomotion. The ophiuroids generally have five long, slender, whip-like arms which may reach up to in length on the largest specimens. The Ophiuroidea contain two large clades, Ophiurida (brittle stars) and Euryalida (basket stars). Over 2,000 species of brittle stars live today. More than 1,200 of these species are found in deep waters, greater than 200 m deep. Range The ophiuroids diverged in the Early Ordovician, about 500 million years ago. Ophiuroids can be found today in all of the major marine provinces, from the poles to the tropics. Basket stars are usually confined to the deeper parts of this range; Ophiuroids are known even from abyssal (>6,000 m) depths. However, brittle stars are also common members of reef communities, where t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mithraculus Cinctimanus
''Mithraculus cinctimanus'' (Banded Clinging Crab) is a species of crab in the family Majidae. It is found in the Caribbean region and is usually associated with a sea anemone, sponge or coral. Description ''Mithraculus cinctimanus'' is a small crab with an oval carapace slightly longer than it is wide. The front third is slightly hairy and the surface of the hind two thirds is roughened by small tubercles. The front edge has several blunt spines. The colour of the carapace is variable often being olive brown with several large creamy patches. The legs have bands of the same colours and their outer segments are hairy. The fingers of the chelae do not completely close and have rounded tips. An adult ''Mithraculus cinctimanus'' is about long. Distribution ''Mithraculus cinctimanus'' is found in the Caribbean region its range including Florida, the West Indies, Curaçao, Colombia and Venezuela. Biology ''Mithraculus cinctimanus'' feeds on filamentous green algae growing on r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenorhynchus Seticornis
''Stenorhynchus seticornis'', the yellowline arrow crab or simply arrow crab, is a species of marine crab. Description The body of ''S. seticornis'' is triangular, and the rostrum is drawn out into a long point with serrate edges. The legs are also long and thin, up to across, and the animal's carapace may be up to long. Colouration is variable in this species; the body may be golden, yellow or cream, marked with brown, black or iridescent-blue lines; the legs are reddish or yellow, and the claws are blue or violet. This species presents as diagnostic features: triangular body with long pointed snout (rostrum), carapace decorated with fine dark lines and claws often have violet tips. ''S. seticornis'' is most commonly associated with anemones, in groups ranging from one to six individuals in south-eastern Brazil. Distribution ''Stenorhynchus seticornis'' is commonly found in the shallow sub-tidal on rock bottoms, corals, calcareous algae, and also on soft sediments, such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thor Amboinensis
''Thor amboinensis'', commonly known as the squat shrimp or sexy shrimp, is a species of shrimp found across the Indo-West Pacific and in parts of the Atlantic Ocean. It lives symbiotically on corals, sea anemones and other marine invertebrates in shallow reef communities. Description ''Thor amboinensis'' is a small shrimp growing to a length of about . It is an olive brown colour with symmetrically placed white patches edged with thin blue lines. It characteristically carries its abdomen curved upwards with its tail fan above its head. Distribution Though it is named for Ambon or Amboyna Island, one of the Maluku Islands in Indonesia, ''Thor amboinensis'' has a pantropical distribution being found in the Red Sea, the Indian Ocean, the Pacific Ocean, the Caribbean Sea, the Gulf of Mexico, Madeira and the Canary Islands. Ecology ''Thor amboinensis'' forms a commensal relationship with another invertebrate, usually a shallow water sea anemone or mushroom coral. The species mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periclimenes Rathbunae
''Periclimenes rathbunae'' is a species of shrimp in the family Palaemonidae, also known as the sun anemone shrimp. It is found in the Caribbean Sea, the Gulf of Mexico, Florida and the Bahamas. It was first described by American biologist Waldo LaSalle Schmitt in 1924 and named in honor of American zoologist Mary J. Rathbun. This shrimp is usually found living in association with the sea anemone ''Stichodactyla helianthus'' or occasionally with ''Condylactis gigantea''. Description This shrimp grows to a length of about . In general it is clear and colourless, but there are many small orange and white spots on the appendages that sometimes lie close together and form bands. The carapace is clear with a partial dorsal saddle of orange and white spots, and the somites have clear dorsal saddles with orange edges, outlined faintly in white. The sea anemone with which this shrimp usually associates, ''Stichodactyla helianthus'', is generally green or olive, and the associated shri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periclimenes Yucatanicus
The spotted cleaner shrimp (''Periclimenes yucatanicus''), is a kind of cleaner shrimp common to the Caribbean Sea. These shrimp live among the tentacles of several species of sea anemones. They sway their body and wave their antennae in order to attract fish from which they eat dead tissue, algae and parasites. Description The spotted cleaner shrimp grows to a length of about . It has a transparent body patterned with brown and white saddle shaped markings. The chelae and legs are boldly striped in red, purple and white. There are two pairs of long white antennae banded in black. Distribution The spotted cleaner shrimp is found at depths down to about in the Caribbean Sea, southern Florida, the Bahamas and as far south as Colombia. Life cycle Breeding takes place in the summer and females have been seen brooding eggs under their abdomens in the months of July and August. After hatching, the larvae pass through several planktonic larval stages before settling on the seabed and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancylomenes Pedersoni
''Ancylomenes pedersoni'', sometimes known as Pederson's shrimp and Pederson's cleaner shrimp, is a species of cleaner shrimp. It is part of the genus ''Ancylomenes'' and was described in 1958 by Fenner A. Chace Jr. as ''Periclimenes pedersoni''. ''Ancylomenes pedersoni'' is found in the Caribbean Sea, often associated with a sea anemone, at depths of . They are often found on the reefs off Bermuda. Description Pederson's shrimp is a small transparent shrimp with bluish and violet markings on the body and long white antennae and within its range is unlikely to be confused with other species. Ecology Pederson's shrimp lives in association with a sea anemone, either ''Bartholomea annulata'' or ''Condylactis gigantea'', living among the tentacles with impunity. Before it can do this it needs to acclimatise itself to the anemone by progressively pressing its body and appendages against the tentacles for increasing periods of time. After this it is able to move between the tentacles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invertebrate
Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate subphylum Vertebrata. Familiar examples of invertebrates include arthropods, mollusks, annelids, echinoderms and cnidarians. The majority of animal species are invertebrates; one estimate puts the figure at 97%. Many invertebrate taxa have a greater number and variety of species than the entire subphylum of Vertebrata. Invertebrates vary widely in size, from 50 μm (0.002 in) rotifers to the 9–10 m (30–33 ft) colossal squid. Some so-called invertebrates, such as the Tunicata and Cephalochordata, are more closely related to vertebrates than to other invertebrates. This makes the invertebrates paraphyletic, so the term has little meaning in taxonomy. Etymology The word "invertebrate" comes from the Latin word ''vertebra'', whi ... [...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] |
