Metynnis argenteus: Metynnis argenteus is a species of serrasalmid endemic to the Tapajós River Basin in Brazil. It is one of the species known in the aquarium trade as the "silver dollar".Sexual motivation and hormones: Sexual motivation is influenced by hormones such as testosterone, estrogen, progesterone, oxytocin, and vasopressin. In most mammalian species, sex hormones control the ability to engage in sexual behaviours.Master of Advanced Studies in Interaction Design (MAIND), SUPSIBiological ornament: A biological ornament is a secondary sexual characteristic of an animal that appears to serve a decorative function rather than an ostensible, utilitarian function. Ornaments are used in displays to attract mates in a process known as sexual selection.Song control system: A song system, also known as a song control system (SCS), is a series of discrete brain nuclei involved in the production and learning of song in songbirds. It was first observed by Fernando Nottebohm in 1976 in a paper titled "Central control of song in the canary, Serinus canarius", published in the Journal of Comparative Neurology.Cannibalism in poultry: Cannibalism in poultry is the act of one individual of a species consuming all or part of another individual of the same species as food. It commonly occurs in flocks of domestic hens reared for egg production, although it can also occur in domestic turkeys, pheasants and other poultry species.Indy (gene): Indy, short for I'm not dead yet, is a gene of the model organism, the fruit fly Drosophila melanogaster. Mutant versions of this gene have doubled the average life span of fruit flies in at least one set of experiments, but this result has been subject to controversy.Trail pheromone: Trail pheromones are semiochemicals secreted from the body of an individual to impact the behavior of another individual receiving it. Trail pheromones often serve as a multi purpose chemical secretion in which, it leads members of its own species towards a food source, while representing a territorial mark in the form of an allomone to organisms outside of their species.Huwentoxin: Huwentoxins (HWTX) are a group of neurotoxic peptides found in the venom of the Chinese bird spider Haplopelma huwena. While structural similarity can be found among several of these toxins, HWTX as a group possess high functional diversity.BESS domain: In molecular biology, the BESS domain is a protein domain which has been named after the three proteins that originally defined the domain: BEAF (Boundary element associated factor 32), Suvar(3)7 and Stonewall ). The BESS domain is 40 amino acid residues long and is predicted to be composed of three alpha helices, as such it might be related to the myb/SANT HTH domain.Drosophila embryogenesis: Drosophila embryogenesis, the process by which Drosophila (fruit fly) embryos form, is a favorite model system for geneticists and developmental biologists studying embryogenesis. The small size, short generation time, and large brood size make it ideal for genetic studies.Wing walkingUnsaturated hydrocarbon: Unsaturated hydrocarbons are hydrocarbons that have double or triple covalent bonds between adjacent carbon atoms. Those with at least one carbon to carbon double bond are called alkenes and those with at least one carbon to carbon triple bond are called alkynes.Teleogryllus oceanicus: Teleogryllus oceanicus, commonly known as the Australian, Pacific or oceanic field cricket, is a cricket found across Oceania and in coastal Australia from Carnarvon in Western Australia and Rockhampton in north-east Queensland Otte, D. & Alexander, R.Society for Behavioral Neuroendocrinology: The Society for Behavioral Neuroendocrinology is an interdisciplinary scientific organization dedicated to the study of hormonal processes and neuroendocrine systems that regulate behavior.Polistes dominula: The European paper wasp (Polistes dominula, often misspelled as dominulus) is one of the more common and well-known species of social wasps in the genus Polistes. Its diet is more diverse than that of most Polistes species (many genera of insects versus mainly caterpillars in other Polistes), making it superior over many others during the shortage of resources.Reproductive toxicity: Reproductive toxicity is a hazard associated with some chemical substances, that they will interfere in some way with normal reproduction; such substances are called reprotoxic. It includes adverse effects on sexual function and fertility in adult males and females, as well as developmental toxicity in the offspring.Xueren: Xueren (English: The ScholarThe Scholar was the translation preferred by the editors of Xueren, appearing thus in their journal, but the title is sometimes also translated Scholars.) was an influential Chinese independent intellectual journal that ran from 1991 to 2000.Dutch profanity: Dutch profanity can be divided into several categories. Often, the words used in profanity by speakers of Dutch are based around various names for diseases.Acoustics Research InstitutePoecilia sphenops: Poecilia sphenops is a species of fish, of the genus Poecilia, known under the common name molly; to distinguish it from its congeners, it is sometimes called short-finned molly or common molly. They inhabit fresh water streams and coastal brackish and marine waters of Mexico.Restricted isometry property: In linear algebra, the restricted isometry property characterizes matrices which are nearly orthonormal, at least when operating on sparse vectors. The concept was introduced by Emmanuel Candès and Terence TaoE.Neolamprologus leleupi: Neolamprologus leleupi, also known as Lemon Cichlid, is a species of cichlid endemic to Lake Tanganyika where it occurs throughout the lake. It is a recess-dweller, inhabiting cracks and crevices.Ernest StarlingRedstart: Redstarts are a group of small Old World birds. They were formerly classified in the thrush family (Turdidae), but are now known to be part of the Old World flycatcher family Muscicapidae.William Finch (merchant): William Finch (died 1613) was an English merchant.