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Macrocyclops Albidus
''Macrocyclops albidus'' is a larvivorous copepod species. Ecology It makes its habitat in still fresh waters such as in residential roadside ditches, pools, ponds, and other environments with sufficient food supply. ''Macrocyclopsis'' feed on mosquito larvae. ''Macrocyclops albidus'' has proven highly efficient in controlling mosquitoes, reaching close to 90% reduction in larval survival under field conditions and exceeding the recommended predation rates for effective mosquito control in laboratory experiments. In laboratory studies, the common ''Macrocyclopsis'' killed an average of 27 first-instar ''Culex quinquefasciatus'' larvae/copepod/day. ''Macrocyclops albidus'' is a known intermediate host for the hermaphroditic parasite ''Schistocephalus solidus ''Schistocephalus solidus'' is a tapeworm of fish, fish-eating birds and rodents. This hermaphroditic parasite belongs to the Eucestoda subclass, of class Cestoda. This species has been used to demonstrate that cross-ferti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Jurine
Louis Jurine (; 6 February 1751 – 20 October 1819) was a Swiss physician, surgeon and naturalist mainly interested in entomology. He lived in Geneva. Surgeon He studied surgery in Paris and quickly acquired a great reputation for his expertise in medicine and natural history beyond that which he had in Geneva. He taught courses in anatomy and surgery at the Société des Arts in Geneva and was made honorary professor of zoology at the Academy (today: University of Geneva). He also founded a maternity hospice in 1807 and was awarded prizes for his work on the gasses of the human body, artificial feeding of infants, and pectoral angina. Naturalist Upon learning of Spallanzani's experiments with bats, in which Spallanzani showed that bats do not rely on sight when navigating in darkness, Jurine conducted a series of experiments from which he concluded that bats use sound to navigate in darkness.See: * Peschier (1798 "Extraits des expériences de Jurine sur les chauve-souris qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copepod
Copepods (; meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat. Some species are planktonic (inhabiting sea waters), some are benthic (living on the ocean floor), a number of species have parasitic phases, and some continental species may live in limnoterrestrial habitats and other wet terrestrial places, such as swamps, under leaf fall in wet forests, bogs, springs, ephemeral ponds, and puddles, damp moss, or water-filled recesses (phytotelmata) of plants such as bromeliads and pitcher plants. Many live underground in marine and freshwater caves, sinkholes, or stream beds. Copepods are sometimes used as biodiversity indicators. As with other crustaceans, copepods have a larval form. For copepods, the egg hatches into a nauplius form, with a head and a tail but no true thorax or abdomen. The larva molts several times until it resembles the adult and then, after more molts, achieves adult development. The nauplius form is so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mosquito
Mosquitoes (or mosquitos) are members of a group of almost 3,600 species of small flies within the family Culicidae (from the Latin ''culex'' meaning "gnat"). The word "mosquito" (formed by ''mosca'' and diminutive ''-ito'') is Spanish for "little fly". Mosquitoes have a slender segmented body, one pair of wings, one pair of halteres, three pairs of long hair-like legs, and elongated mouthparts. The mosquito life cycle consists of egg, larva, pupa, and adult stages. Eggs are laid on the water surface; they hatch into motile larvae that feed on aquatic algae and organic material. These larvae are important food sources for many freshwater animals, such as dragonfly nymphs, many fish, and some birds such as ducks. The adult females of most species have tube-like mouthparts (called a proboscis) that can pierce the skin of a host and feed on blood, which contains protein and iron needed to produce eggs. Thousands of mosquito species feed on the blood of various hosts —� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larva
A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The larva's appearance is generally very different from the adult form (''e.g.'' caterpillars and butterflies) including different unique structures and organs that do not occur in the adult form. Their diet may also be considerably different. Larvae are frequently adapted to different environments than adults. For example, some larvae such as tadpoles live almost exclusively in aquatic environments, but can live outside water as adult frogs. By living in a distinct environment, larvae may be given shelter from predators and reduce competition for resources with the adult population. Animals in the larval stage will consume food to fuel their transition into the adult form. In some organisms like polychaetes and barnacles, adults are im ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Vector Ecology
A journal, from the Old French ''journal'' (meaning "daily"), may refer to: *Bullet journal, a method of personal organization * Diary, a record of what happened over the course of a day or other period *Daybook, also known as a general journal, a daily record of financial transactions *Logbook, a record of events important to the operation of a vehicle, facility, or otherwise *Record (other) * Transaction log, a chronological record of data processing *Travel journal In publishing, ''journal'' can refer to various periodicals or serials: *Academic journal, an academic or scholarly periodical **Scientific journal, an academic journal focusing on science **Medical journal, an academic journal focusing on medicine **Law review, a professional journal focusing on legal interpretation *Magazine, non-academic or scholarly periodicals in general **Trade magazine, a magazine of interest to those of a particular profession or trade **Literary magazine, a magazine devoted to lit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instar
An instar (, from the Latin '' īnstar'', "form", "likeness") is a developmental stage of arthropods, such as insects, between each moult (''ecdysis''), until sexual maturity is reached. Arthropods must shed the exoskeleton in order to grow or assume a new form. Differences between instars can often be seen in altered body proportions, colors, patterns, changes in the number of body segments or head width. After shedding their exoskeleton (moulting), the juvenile arthropods continue in their life cycle until they either pupate or moult again. The instar period of growth is fixed; however, in some insects, like the salvinia stem-borer moth, the number of instars depends on early larval nutrition. Some arthropods can continue to moult after sexual maturity, but the stages between these subsequent moults are generally not called instars. For most insect species, an ''instar'' is the developmental stage of the larval forms of holometabolous (complete metamorphism) or nymphal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culex Quinquefasciatus
''Culex'' is a genus of mosquitoes, several species of which serve as vectors of one or more important diseases of birds, humans, and other animals. The diseases they vector include arbovirus infections such as West Nile virus, Japanese encephalitis, or St. Louis encephalitis, but also filariasis and avian malaria. They occur worldwide except for the extreme northern parts of the temperate zone, and are the most common form of mosquito encountered in some major U.S. cities, such as Los Angeles. Etymology In naming this genus, Carl Linnaeus appropriated the nonspecific Latin term for a midge or gnat: '. Description Depending on the species, the adult ''Culex'' mosquito may measure from . The adult morphology is typical of flies in the suborder Nematocera with the head, thorax, and abdomen clearly defined and the two forewings held horizontally over the abdomen when at rest. As in all Diptera capable of flight, the second pair of wings is reduced and modified into tiny, inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schistocephalus Solidus
''Schistocephalus solidus'' is a tapeworm of fish, fish-eating birds and rodents. This hermaphroditic parasite belongs to the Eucestoda subclass, of class Cestoda. This species has been used to demonstrate that cross-fertilization produces a higher infective success rate than self-fertilization. Life cycle It parasitizes fish and fish-eating water birds. The fish-eating water bird is the definitive host, and reproduction occurs in the bird's intestine. Eggs of the tapeworm are passed with the bird's feces and hatch in the water, where the first larval stage, the coracidium, is produced. The coracidium is then ingested by the first intermediate host, a cyclopoid copepod (e.g. ''Macrocyclops albidus''). The second larval stage then subsequently develops in the tissue of this host. Within one to two weeks, the infected copepod is ingested by the second intermediate host, the three-spined stickleback, ''Gasterosteus aculeatus''. The third larval stage, the plerocercoid, grows in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudal Ramus
The caudal ramus (plural: ''caudal rami'') is a characteristic feature of primitive crustaceans. Located on the anal somite (telson segment), the caudal ramus is a pair of appendage-like or spine-like protrusions. Specific structures which are rod or blade-like are referred to as ''caudal furca Caudal may refer to: Anatomy * Caudal (anatomical term) (from Latin ''cauda''; tail), used to describe how close something is to the trailing end of an organism * Caudal artery, the portion of the dorsal aorta of a vertebrate that passes into the ...''. References *Brusca, Gary J. & Richard C. Brusca, ''Invertebrates''. 2003. Crustacean anatomy {{crustacean-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclopidae
The Cyclopidae are a family of copepods containing more than half of the 1,200 species in the order Cyclopoida in over 70 genera. Genera These genera are accepted as valid: *'' Abdiacyclops'' Karanovic, 2005 *''Acanthocyclops'' Kiefer, 1927 *''Afrocyclops'' G. O. Sars, 1927 *'' Allocyclops'' Kiefer, 1932 *'' Ancheuryte'' Herbst, 1989 *'' Anzcyclops'' Karanovic, Eberhard & Murdoch, 2011 *'' Apocyclops'' Lindberg, 1942 *'' Australocyclops'' Morton, 1985 *'' Australoeucyclops'' Karanovic *'' Austriocyclops'' Kiefer, 1964 *'' Bacillocyclops'' Lindberg, 1956 *''Bryocyclops'' Kiefer, 1927 *'' Caspicyclops'' Monchenko, 1986 *'' Cochlacocyclops'' Kiefer, 1955 *'' Colpocyclops'' Monchenko, 1977 *''Cyclops'' Müller, 1785 *''Diacyclops'' Kiefer, 1927 *'' Dussartcyclops'' Karanovic, Eberhard & Murdoch, 2011 *'' Ectocyclops'' Brady, 1904 *'' Eucyclops'' Claus, 1893 *'' Euryte'' Philippi, 1843 *''Faurea'' Labbé, 1927 *'' Fierscyclops'' Karanovic, 2004 *'' Fimbricyclops'' Reid, 1993 *'' Goni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
