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Lychnorhiza Lucerna
''Lychnorhiza lucerna'' is a species of jellyfish in the order Rhizostomeae. It is found off the Atlantic coasts of South America. Description When small, ''Lychnorhiza lucerna'' has a hemispherical bell, but this becomes flattened into a saucer shape as the jellyfish grows. Very large specimens have been known to reach in diameter and are dish-shaped. The upper surface is flexible and thin and is covered in low conical projections. Round the periphery are many small, triangular lappets. Hanging under the bell there are four pairs of oral tentacles, about two thirds as long as the diameter of the bell. The upper halves of these are somewhat flattened and the lower halves divide into three vanes which have multiple, inrolled edges. Among these are suctorial mouthlets leading to the interior of the bell and various thick dangling filaments. There is no central mouth. The stomach occupies most of the interior of the bell and there are a ring of small cream or white gonads round its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Haeckel
Ernst Heinrich Philipp August Haeckel (; 16 February 1834 – 9 August 1919) was a German zoologist, naturalist, eugenicist, philosopher, physician, professor, marine biologist and artist. He discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms and coined many terms in biology, including ''ecology'', '' phylum'', ''phylogeny'', and ''Protista.'' Haeckel promoted and popularised Charles Darwin's work in Germany and developed the influential but no longer widely held recapitulation theory ("ontogeny recapitulates phylogeny") claiming that an individual organism's biological development, or ontogeny, parallels and summarises its species' evolutionary development, or phylogeny. The published artwork of Haeckel includes over 100 detailed, multi-colour illustrations of animals and sea creatures, collected in his ''Kunstformen der Natur'' ("Art Forms of Nature"), a book which would go on to influence the Art Nouveau artistic mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strobilation
Strobilisation or transverse fission is a form of asexual reproduction consisting of the spontaneous transverse segmentation of the body. It is observed in certain cnidarians and helminths. This mode of reproduction is characterized by high offspring output, which, in the case of the parasitic tapeworms, is of great significance. Strobilation in cnidarians *The process starts with preliminary morphological changes. In particular, the cnidarian's tentacles tend to be reabsorbed. *Neck-formation: transverse constrictions appear near the upper extremity of the animal. A strobilating polyp is called a strobila while the non-strobilating polyp is called a scyphistoma or scyphopolyp. *Segmentation: the number of constriction sites increases and migrates down the body length, transforming the body into a sequence of disks. The fissures intensify until the initial body is divided into equally spaced, separate segments. The oral end of the polyp becomes the oral end of the ephyra. *Metamorp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lychnorhizidae
Lychnorhizidae is a family of true jellyfish. Species The following species are recognized in the family Lychnorhizidae: * '' Anomalorhiza'' :*'' Anomalorhiza shawi'' Light, 1921 * '' Lychnorhiza'' :*'' Lychnorhiza arubae'' Stiasny, 1920 :*'' Lychnorhiza lucerna'' Haeckel, 1880 :*'' Lychnorhiza malayensis'' Stiasny, 1920 * '' Pseudorhiza'' :*'' Pseudorhiza aurosa'' von Lendenfeld, 1882 :*''Pseudorhiza haeckeli ''Pseudorhiza haeckeli'', or Haeckel's jelly, is a species of cnidarian of the family Lychnorhizidae. The species is a carnivore with a mild sting. It is native to temperate and sub-tropical Australian marine waters. It has been observed at dept ...'' Haacke, 1884 Within the Lychnorhizidae family there is the Anomalorhiza shawi species which is located in Kota Kinabalu.Chuan, C. H., Venmathi Maran, B. A., Yap, T.-K., Cheong, K. C., Syed Hussein, M. A., Saleh, E., & Tan, S.-H. (2020). First record of Jellyfish Anomalorhiza Shawi Light, 1921 (cnidaria: Scyphozoa) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Predation
Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the host) and parasitoidism (which always does, eventually). It is distinct from scavenging on dead prey, though many predators also scavenge; it overlaps with herbivory, as seed predators and destructive frugivores are predators. Predators may actively search for or pursue prey or wait for it, often concealed. When prey is detected, the predator assesses whether to attack it. This may involve ambush or pursuit predation, sometimes after stalking the prey. If the attack is successful, the predator kills the prey, removes any inedible parts like the shell or spines, and eats it. Predators are adapted and often highly specialized for hunting, with acute senses such as vision, hearing, or smell. Many predatory animals, both vertebrate and inv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Libinia Spinosa
''Libinia spinosa'' is a majoid crab found in mud and sand bottoms of the Southwestern Atlantic and Pacific oceans. It is a generalist feeder on organisms such as algae, sponges, cnidarians, mollusks, polychaetes, crustaceans, and small fish. It commonly engages in a symbiotic relationship with the medusa ''Lychnorhiza lucerna''. Description ''Libinia spinosa'' is a member of the crab superfamily Majoidea which are commonly known as the spider crabs. The carapaces of this organism can measure up to 89 mm and its leg span can be up to 568 mm. The number of median spines of ''Libinia spinosa'' can vary, with 7 being the most common number, but ''Libinia spinosa'' with 5, 8, and 10 median spines are also seen commonly. Testes are visibly flat, transparent structures that are coiled anteriorly. Range and habitat ''Libinia spinosa'' is commonly found at both mud and sand bottoms in the Southwestern Atlantic and Pacific oceans. It inhabits Southwestern Atlantic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Libinia Ferreirae
''Libinia ferreirae'' is a species of tropical spider crab in the family Epialtidae. It is found on the seabed in shallow waters off the Atlantic coast of South America. Description Like other spider crabs, ''Libinia ferreirae'' has a roughly circular spiny carapace that extends forwards into a rostrum between the two, stalked eyes. It has five pairs of walking limbs. Distribution ''Libinia ferreirae'' is found off the Atlantic coast of South America in the intertidal zone and at depths down to about . The range extends from Venezuela and the Guianas, through parts of Brazil to Uruguay. Biology The larvae of ''Libinia ferreirae'' are planktonic and have one prezoeal stage, two zoeal stages and one megalopa stage. The carapace of the zoea has one short rostral and one curved dorsal spine and some of the abdominal segments have spiny projections. The post-larval megalopa has a downturned rostrum, a carapace with various protuberances and four pairs of abdominal appendages. Ecol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemicaranx Amblyrhynchus
''Hemicaranx amblyrhynchus'' (bluntnose jack) is a tropical marine fish in the jack family ( Carangidae). It is found in shallow parts of the western Atlantic Ocean. Description The bluntnose jack is a deep bodied fish with a large, deeply forked tail fin. The dorsal fin is divided in two parts and has 8 spines and 27 soft rays. The long anal fin tapers towards the tail and has 3 spines and 23 soft rays. Adults normally grow to about in length.''Hemicaranx amblyrhynchus'' (Cuvier, 1833): Bluntnose jack FishBase. Retrieved 2012-04-02. Distribution The bluntnose jack is found in the neritic zone in the western Atlantic Ocean at depths down to about . Its range extends f ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloroscombrus Chrysurus
The Atlantic bumper (''Chloroscombrus chrysurus'') is a game fish in the family, Carangidae. It was first described by the "father of modern taxonomy", Carl Linnaeus in the book, ''Systema Naturae''. Atlantic bumper are known to eat smaller fish, cephalopods, and zooplankton. Description The Atlantic bumper is best recognized by its profile, the bottom being much more curved than the top. Also, the lateral line is arched near the head. Atlantic bumper are generally described as silver to golden colored, with golden yellow on the anal and caudal fins, which have 3 spines, 25-28 rays and 9 spines, 25-28 rays, respectively. There is an obvious black saddle-shaped blotch on the caudal peduncle and a similar patch near the edge of the opercle. Although the average size of Atlantic bumper is , the largest recorded Atlantic bumper was long. Distribution and habitat In the western Atlantic, Atlantic bumper is found from Massachusetts, to south Brazil. They are known to b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periclimenes
''Periclimenes'', commonly known as glass shrimp or cleaner shrimp, is a commensal and often symbiotic genus of semi-transparent shrimp within the family Palaemonidae. Species of this large genus feature a wide variety of coloration and patterns, widespread distribution throughout much of the world's tropical oceans, and are often sought out for aquarium trade. Taxonomy This genus has undergone several changes in classification based on recent molecular studies comparing species within the genus. However, most recent molecular studies have only involved approximately 20% of the known species likely to belong to the genus. Additionally, most of the molecular studies performed involved Indo-Pacific species of ''Periclimenes'' and did not include presumed ''Periclimenes'' found in the Atlantic Ocean. ''Periclimenes'' has previously been suggested as being a polyphyletic taxa, and has already undergone splits into several new genera. It is likely the genus will undergo changes in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyp (zoology)
A polyp in zoology is one of two forms found in the phylum Cnidaria, the other being the medusa. Polyps are roughly cylindrical in shape and elongated at the axis of the vase-shaped body. In solitary polyps, the aboral (opposite to oral) end is attached to the substrate by means of a disc-like holdfast called a pedal disc, while in colonies of polyps it is connected to other polyps, either directly or indirectly. The oral end contains the mouth, and is surrounded by a circlet of tentacles. Classes In the class Anthozoa, comprising the sea anemones and corals, the individual is always a polyp; in the class Hydrozoa, however, the individual may be either a polyp or a medusa, with most species undergoing a life cycle with both a polyp stage and a medusa stage. In class Scyphozoa, the medusa stage is dominant, and the polyp stage may or may not be present, depending on the family. In those scyphozoans that have the larval planula metamorphose into a polyp, the polyp, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, wikt:ordo#Latin, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sessility (zoology)
Sessility is the biological property of an organism describing its lack of a means of self-locomotion. Sessile organisms for which natural ''motility'' is absent are normally immobile. This is distinct from the botanical concept of sessility, which refers to an organism or biological structure attached directly by its base without a stalk. Sessile organisms can move via external forces (such as water currents), but are usually permanently attached to something. Organisms such as corals lay down their own substrate from which they grow. Other sessile organisms grow from a solid such as a rock, dead tree trunk, or a man-made object such as a buoy or ship's hull. Mobility Sessile animals typically have a motile phase in their development. Sponges have a motile larval stage and become sessile at maturity. Conversely, many jellyfish develop as sessile polyps early in their life cycle. In the case of the cochineal, it is in the nymph stage (also called the crawler stage) that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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