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Spodoptera Litura
''Spodoptera litura'', otherwise known as the tobacco cutworm or cotton leafworm, is a nocturnal moth in the family Noctuidae. ''S. litura'' is a serious polyphagous pest in Asia, Oceania, and the Indian subcontinent that was first described by Johan Christian Fabricius in 1775. Its common names reference two of the most frequent host plants of the moth. In total, 87 species of host plants that are infested by ''S. litura'' are of economic importance. The species parasitize the plants as larvae through vigorous eating patterns, oftentimes leaving the leaves completely destroyed. The moth destroys economically important agricultural crops and decreases yield in some plants completely. Their potential impact on the many different cultivated crops, and subsequently the local agricultural economy, has led to serious efforts to control the pests. ''S. litura'' is often confused with its close relative, ''Spodoptera littoralis''. These two species are hard to discriminate between becau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johan Christian Fabricius
Johann Christian Fabricius (7 January 1745 – 3 March 1808) was a Danish zoologist, specialising in "Insecta", which at that time included all arthropods: insects, arachnids, crustaceans and others. He was a student of Carl Linnaeus, and is considered one of the most important entomologists of the 18th century, having named nearly 10,000 species of animals, and established the basis for the modern insect classification. Biography Johann Christian Fabricius was born on 7 January 1745 at Tønder in the Duchy of Schleswig, where his father was a doctor. He studied at the gymnasium at Altona and entered the University of Copenhagen in 1762. Later the same year he travelled together with his friend and relative Johan Zoëga to Uppsala, where he studied under Carl Linnaeus for two years. On his return, he started work on his , which was finally published in 1775. Throughout this time, he remained dependent on subsidies from his father, who worked as a consultant at Frederiks H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spodoptera Litura Larvae
''Spodoptera'' is a genus of moths of the family Noctuidae erected by Achille Guenée in 1852. Many are known as pest insects. The larvae are sometimes called armyworms. The roughly thirty species are distributed across six continents. Description No tufts behind collar as in '' Euplexia'', but only tufts present on metathorax. Scales much smoother. Abdominal tufts slight. Fore tibial tufts are very developed. Cilia slightly crenulated. Antennae almost simple. Species * ''Spodoptera abyssinia'' Guenée, 1852 * '' Spodoptera albula'' (Walker, 1857) (orth. var. ''S. albulum'') * '' Spodoptera androgea'' (Stoll, 782 * ''Spodoptera angulata'' (Gaede, 1935) * '' Spodoptera apertura'' (Walker, 1865) * '' Spodoptera cilium'' Guenée, 1852 – grasslawn armyworm * ''Spodoptera compta'' (Walker, 1869) * ''Spodoptera connexa'' (Wileman, 1914) * ''Spodoptera depravata'' (Butler, 1879) * '' Spodoptera dolichos'' (Fabricius, 1794) – sweet potato armyworm * '' Spodoptera eridania'' (Cram ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tobacco
Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the chief commercial crop is ''N. tabacum''. The more potent variant ''N. rustica'' is also used in some countries. Dried tobacco leaves are mainly used for smoking in cigarettes and cigars, as well as pipes and shishas. They can also be consumed as snuff, chewing tobacco, dipping tobacco, and snus. Tobacco contains the highly addictive stimulant alkaloid nicotine as well as harmala alkaloids. Tobacco use is a cause or risk factor for many deadly diseases, especially those affecting the heart, liver, and lungs, as well as many cancers. In 2008, the World Health Organization named tobacco use as the world's single greatest preventable cause of death. Etymology The English word 'tobacco' originates from the Spanish word ''taba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karnataka
Karnataka ( ) is a States and union territories of India, state in the southwestern region of India. It was Unification of Karnataka, formed as Mysore State on 1 November 1956, with the passage of the States Reorganisation Act, 1956, States Reorganisation Act, and renamed ''Karnataka'' in 1973. The state is bordered by the Lakshadweep Sea to the west, Goa to the northwest, Maharashtra to the north, Telangana to the northeast, Andhra Pradesh to the east, Tamil Nadu to the southeast, and Kerala to the southwest. With 61,130,704 inhabitants at the 2011 census, Karnataka is the List of states and union territories of India by population, eighth-largest state by population, comprising 31 List of districts in India, districts. With 15,257,000 residents, the state capital Bengaluru is the largest city of Karnataka. The economy of Karnataka is among the most productive in the country with a gross state domestic product (GSDP) of and a per capita GSDP of for the financial year 2023– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Polyhedrosis Virus
''Baculoviridae'' is a family of viruses. Arthropods, among the most studied being Lepidoptera, Hymenoptera and Diptera, serve as natural hosts. Currently, 85 species are placed in this family, assigned to four genera. Baculoviruses are known to infect insects, with over 600 host species having been described. Immature (larval) forms of lepidopteran species (moths and butterflies) are the most common hosts, but these viruses have also been found infecting sawflies, and mosquitoes. Although baculoviruses are capable of entering mammalian cells in culture, they are not known to be capable of replication in mammalian or other vertebrate animal cells. Starting in the 1940s, they were used and studied widely as biopesticides in crop fields. Baculoviruses contain a circular, double-stranded DNA (dsDNA) genome ranging from 80 to 180 kbp. Historical influence The earliest records of baculoviruses can be found in the literature from as early as the 16th century in reports of "wilting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterospecific
Biological specificity is the tendency of a characteristic such as a behavior or a biochemical variation to occur in a particular species. Biochemist Linus Pauling stated that "Biological specificity is the set of characteristics of living organisms or constituents of living organisms of being special or doing something special. Each animal or plant species is special. It differs in some way from all other species...biological specificity is the major problem about understanding life." Biological specificity within ''Homo sapiens'' ''Homo sapiens'' has many characteristics that show the biological specificity in the form of behavior and morphological traits. Morphologically, humans have an enlarged cranial capacity and more gracile features in comparison to other hominins. The reduction of dentition is a feature that allows for the advantage of adaptability in diet and survival. As a species, humans are culture dependent and much of human survival relies on the culture and socia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
(Z,E)-9,11-tetradecadienyl Acetate
Various tetradecadienyl acetate compounds serve as insect mating pheromones especially among the Pyralidae. These include: * '' Prionoxystus robiniaea'' mating attractant . * '' Accosus centerensis'' mating attractant * '' Borkhausenia schefferella'' mating attractant * '' Conistra vaccinii'' mating attractant * (abbr. Z9,E11-14:Ac) ''Spodoptera littoralis'' and '' S. litura'' mating attractant and mating inhibitor. Female pheromone, lures males. Used by McVeigh and Bettany 1986 and Downham ''et al.'', 1995 over the course of three years in a 99:1 with . Although they achieved good mating disruption this did not result in lower egg mass or population. The results of Campion ''et al.'', 1980 suggest that may be due to the need for other, minor female volatiles. Martinez ''et al.'', 1993 study control of its synthesis in ''S. littoralis'' by hormones, finding that the reduction step may be controlled by pheromone biosynthesis activating neuropeptide. * ''Plodia interp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pheromone
A pheromone () is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting like hormones outside the body of the secreting individual, to affect the behavior of the receiving individuals. There are ''alarm signal, alarm pheromones'', ''food trail pheromones'', ''sex pheromones'', and many others that affect behavior or physiology. Pheromones are used by many organisms, from basic unicellular prokaryotes to complex multicellular eukaryotes. Their use among insects has been particularly well documented. In addition, some vertebrates, plants and ciliates communicate by using pheromones. The ecological functions and evolution of pheromones are a major topic of research in the field of chemical ecology. Background The portmanteau word "pheromone" was coined by Peter Karlson and Martin Lüscher in 1959, based on the Greek language, Greek () and (). Pheromones are also sometimes classified as ec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Post-mating Conflict
Sexual conflict or sexual antagonism occurs when the two sexes have conflicting optimal fitness strategies concerning reproduction, particularly over the mode and frequency of mating, potentially leading to an evolutionary arms race between males and females. In one example, males may benefit from multiple matings, while multiple matings may harm or endanger females due to the anatomical differences of that species. Sexual conflict underlies the evolutionary distinction between male and female. The development of an evolutionary arms race can also be seen in the chase-away sexual selection model, which places inter-sexual conflicts in the context of secondary sexual characteristic evolution, sensory exploitation, and female resistance. According to chase-away selection, continuous sexual conflict creates an environment in which mating frequency and male secondary sexual trait development are somewhat in step with the female's degree of resistance. It has primarily been studied in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Male Accessory Gland (insect)
Male accessory glands (MAG) are the seminal vesicles, prostate gland, and the bulbourethral glands. These glands are found only in mammals. In insects, male accessory glands produce products that mix with the sperm to protect and preserve them, including seminal fluid proteins. Some insecticides can induce an increase in the protein content of the male accessory glands of certain types of insects. This has the unintended effect of increasing the number of offspring they produce. The accessory glands of male mammals secrete fluid for nourishment of sperm and sexual attraction. Accessory glands The male accessory glands are the ampullary gland, seminal vesicle, prostate, bulbourethral gland, and urethral gland. The products of these glands serve to nourish and activate the spermatozoa, to clear the urethral tract prior to ejaculation, serve as the vehicle of transport of the spermatozoa in the female tract, and to plug the female tract after placement of spermatozoa to help e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
