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Piscicidal
A piscicide is a chemical substance which is poisonous to fish. The primary use for piscicides is to eliminate a dominant species of fish in a body of water, as the first step in attempting to populate the body of water with a different fish. They are also used to combat parasite, parasitic and invasive species of fish. Examples of piscicides include rotenone, saponins, TFM (piscicide), TFM, niclosamide and Antimycin A (Fintrol).Susan J. Clearwater, Chris W. Hickey, Michael L. Martin Overview of potential piscicides and molluscicides for controlling aquatic pest species in New Zealand' Science & Technical Publishing 2008 Plant-based piscicides Historically, fishing techniques of indigenous people around the world have frequently included the use of plant-based piscicides. Many of these plants are natural sources of rotenone and saponins. The genus, genera ''Tephrosia'', ''Wikstroemia'', and ''Barringtonia'' are well known as fish poisons. See also *Cyanide fishing *Environmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Substance
A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent Chemical element, elements by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be simple substances (substances consisting of a single chemical element), chemical compounds, or alloys. Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure Water (molecule), water; it has the same properties and the same atomic ratio, ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, Edible salt, table salt (sodium chloride) and refined sugar (sucrose). However, in practice, no substance is entirely pure, and chemical purity is specified according to the intended use of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Environmental Impact Of Pesticides
The environmental effects of pesticides describe the broad series of consequences of using pesticides. The unintended consequences of pesticides is one of the main drivers of the negative impact of modern industrial agriculture on the environment. Pesticides, because they are toxic chemicals meant to kill pest species, can affect non-target species, such as plants, animals and humans. Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, because they are sprayed or spread across entire agricultural fields. Other agrochemicals, such as fertilizers, can also have negative effects on the environment. The negative effects of pesticides are not just in the area of application. Runoff and pesticide drift can carry pesticides into distant aquatic environments or other fields, grazing areas, human settlements and undeveloped areas. Other problems emerge from poor production, transport, storage and disposal practices.Tashkent (199 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyanide Fishing
In respect of fishing techniques, cyanide fishing is a specific method of collecting live fish, mainly for use in aquariums, which involves spraying a sodium cyanide mixture into the desired fish's habitat in order to incapacitate the fish. This practice affects not only the target population, it also has negative and damaging effects on many other marine organisms, including coral and coral reefs. History and geography Cyanide fishing is practiced mainly in saltwater fishing regions of Southeast Asia. Since the practice of cyanide fishing was never widely publicised or officially approved, its origins are uncertain; but it is believed to have originated in the 1950s in the Philippines. Later in the twentieth century, the practice was adopted by some fishing operators in Indonesia, Thailand, Maldives, and Taiwan, among others. Cyanide fishing was initially developed to stun and capture fish for aquariums and collectors, but it was soon also used for catching fish for huma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Poisons
Fish toxins or fish stupefying plants have historically been used by many hunter gatherer cultures to stun fish, so they become easy to collect by hand. Some of these toxins paralyse fish, which can then be easily collected. The process of documenting many fish toxins and their use is ongoing, with interest in potential uses from medicine, agriculture, and industry. Theory Use of the herbal fish poisons has been documented in a number of sources involving catching fish from fresh and sea water. Tribal people historically used various plants for medicinal and food exploitation purposes. Use of fish poisons is a very old practice in the history of humankind. In 1212 AD, King Frederick II prohibited the use of certain plant piscicides, and by the 15th century, similar laws had been decreed in other European countries, as well. All over the globe, indigenous people use various fish poisons to kill fish, including America and among Tarahumara Indians. Herbal fish-stupefying agen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barringtonia
''Barringtonia'' is a genus of flowering plants in the family Lecythidaceae first described as a genus with this name in 1775. It is native to Africa, southern Asia, Australia, and various islands of the Pacific and Indian Oceans. The genus name commemorates Daines Barrington. Species list The following is a list of species of ''Barringtonia'' accepted by the World Checklist of Selected Plant Families as at April 2022: Gallery File:Barringtonia acutangula (Freshwater Mangrove) flower buds in Kolkata W IMG_8546.jpg, flower buds in Kolkata, West Bengal, India. File:Barringtonia acutangula (Freshwater Mangrove) fruits in Kolkata W IMG 8547.jpg, fruits and arrangement of leaves in Kolkata, West Bengal, India. File:Barringtonia acutangula (Freshwater Mangrove) fruits in Kolkata W IMG 8545.jpg, fruits in Kolkata, West Bengal, India. File:Barringtonia acutangula (Freshwater Mangrove) in Hyderabad W IMG 8323.jpg, Tree in Hyderabad, India. File:Barringtonia acutangula (Freshwater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wikstroemia
''Wikstroemia'' is a genus of 55-70 species of flowering shrubs and small trees in the mezereon family, Thymelaeaceae. Hawaiian species are known by the common name ‘ākia. Medicinal uses ''Wikstroemia indica'' () is one of the 50 fundamental herbs used in traditional Chinese medicine. Paper making The bark fibres of several species of ''Wikstroemia'' are used to make paper. Species *''Wikstroemia albiflora'' *''Wikstroemia alternifolia'' *'' Wikstroemia angustifolia'' *''Wikstroemia australis'' – Norfolk Island *''Wikstroemia balansae'' *''Wikstroemia bicornuta'' Hillebr. – alpine false ohelo ( Lānai and Maui, Hawaii) *''Wikstroemia chuii'' *''Wikstroemia coriacea'' Sol. ex Seem. *''Wikstroemia elliptica'' *''Wikstroemia forbesii'' Skottsb. – Molokai false ohelo (Molokai, Hawaii) *''Wikstroemia fruticosa'' *''Wikstroemia furcata'' (Hillebr.) Rock – forest false ohelo (Kauai, Hawaii) *'' Wikstroemia ganpi'' *''Wikstroemia gracilis'' *''Wikstroemia hainanensis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tephrosia
''Tephrosia'' is a genus of flowering plants in the pea family, Fabaceae. It is widespread in both the Eastern and Western Hemisphere, where it is found in tropical and warm-temperate regions. The generic name is derived from the Greek word τεφρος (''tephros''), meaning "ash-colored," referring to the greyish tint given to the leaves by their dense trichomes. Hoarypea is a common name for plants in this genus, along with Goat's Rue and Devil's Shoestring. Uses Many species in the genus are poisonous, particularly to fish, for their high concentration of rotenone. The black seeds of ''Tephrosia'' species have historically been used by indigenous cultures as fish toxins.NTFlora Northern Territory Flora online:''Flora of the Darwin Region: Fabaceae.''Retrieved 10 June 2018 In the last century, several ''Tephrosia'' species have been studied in connection with the use of rotenone as an insecticide and pesticide. '' Tephrosia vogelii'' is also one of the many beneficial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antimycin A
Antimycin A (more exactly Antimycin A1b) is a secondary metabolite produced by ''Streptomyces'' bacteria and a member of a group of related compounds called antimycins. Antimycin A is classified as an extremely hazardous substance in the United States, as defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities. Use Antimycin A is the active ingredient in Fintrol, a chemical piscicide (fish poison) used in fisheries management. Antimycin A was first discovered in 1945 and registered for use as a fish toxicant in 1960. Fintrol ® is the only currently registered product containing Antimycin A and is classified as a restricted use pesticide because of its aquatic toxicity and requirement for highly specialized training in order to use it. In 1993, several toxicology studies were submitted to the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poison
Poison is a chemical substance that has a detrimental effect to life. The term is used in a wide range of scientific fields and industries, where it is often specifically defined. It may also be applied colloquially or figuratively, with a broad sense. Whether something is considered a poison may change depending on the amount, the circumstances, and what living things are present. Poisoning could be accidental or deliberate, and if the cause can be identified there may be ways to neutralise the effects or minimise the symptoms. In biology, a poison is a chemical substance causing death, injury or harm to organisms or their parts. In medicine, poisons are a kind of toxin that are delivered passively, not actively. In industry the term may be negative, something to be removed to make a thing safe, or positive, an agent to limit unwanted pests. In ecological terms, poisons introduced into the environment can later cause unwanted effects elsewhere, or in other parts of the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niclosamide
Niclosamide, sold under the brand name Niclocide among others, is an anthelmintic medication used to treat tapeworm infestations, including diphyllobothriasis, hymenolepiasis, and taeniasis. It is not effective against other worms such as flukes or roundworms. It is taken by mouth. Side effects include nausea, vomiting, abdominal pain, and itchiness. It may be used during pregnancy. It works by blocking glucose uptake and oxidative phosphorylation by the worm. Niclosamide was first synthesized in 1958. It is on the World Health Organization's List of Essential Medicines. Niclosamide is not available for human use in the United States. Side effects Side effects include nausea, vomiting, abdominal pain, constipation, and itchiness. Rarely, dizziness, skin rash, drowsiness, perianal itching, or an unpleasant taste occur. For some of these reasons, praziquantel is a preferable and equally effective treatment for tapeworm infestation. Important Note: Niclosamide kills the pork ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TFM (piscicide)
TFM (3- trifluoromethyl-4- nitrophenol) is a common piscicide, i.e., a fish poison used to combat parasitic and invasive species An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species ad ... of fish. The substance was discovered in 1958 when researching means to combat sea lampreys and it remains the primary lampricide (lamprey-killer) in the Great Lakes area. TFM toxicity has not been thoroughly investigated for humans, but is considered an irritant, respiratory irritant, and toxic by the manufacturer. Toxicity studies of other mammals have generally found it to be non-toxic at concentrations expected to be found in treated areas. Impact on other fish species may be controlled by selective application during the larvae season for lampreys and other management of its concentration. TFM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
