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Resonating Device
A resonating device is a structure used by an animal that improves the quality of its Animal communication, vocalizations through amplifying the sound produced via acoustic resonance. The benefit of such an adaptation is that the call's volume increases while lessening the necessary Biological thermodynamics, energy expenditure otherwise required to make such a sound. The resulting sound may also Radiation, radiate more efficiently throughout the environment. The resonator may take the form of a hollow (a resonant space), a chamber (referred to as a resonating chamber), or an otherwise air-filled cavity (such as an air sac) which may be part of, or adjacent to, the animal's sound-producing Organ (biology), organ, or it may be a structure entirely outside of the animal's body (Habitat, part of the environment). Such structures use a similar principle to wind instruments, in that both utilize a Acoustic resonance, resonator to amplify the Acoustic wave, soundwave that will ultimat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symphalangus Syndactylus, Chiba Zoo, Japan
The siamang (, ; ''Symphalangus syndactylus'') is an endangered arboreal, black-furred gibbon native to the forests of Indonesia, Malaysia, and Thailand. The largest of the gibbons, the siamang can be twice the size of other gibbons, reaching in height, and weighing up to . It is the only species in the genus ''Symphalangus''. Fossils of siamangs date back to the Middle Pleistocene. Two features distinguish the siamang from other gibbons. First, two digits on each foot—the second and third toes—are partially joined by a membrane, hence the species, specific name ''Syndactyly, syndactylus'', from the Ancient Greek σύν, ''sun-'', "with" + δάκτυλος, ''daktulos'', "finger". Second, a large gular sac (throat pouch), found in both males and females of the species, can be inflated to the size of the siamang's head, allowing it to make resonating calls. Two subspecies of the siamang are the nominate Sumatran siamang (''S. s. syndactylus'') and the Malaysian siamang (''S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Respiratory Tract
The respiratory tract is the subdivision of the respiratory system involved with the process of conducting air to the alveoli for the purposes of gas exchange in mammals. The respiratory tract is lined with respiratory epithelium as respiratory mucosa. Air is breathed in through the nose to the nasal cavity, where a layer of nasal mucosa acts as a filter and traps pollutants and other harmful substances found in the air. Next, air moves into the pharynx, a passage that contains the intersection between the oesophagus and the larynx. The opening of the larynx has a special flap of cartilage, the epiglottis, that opens to allow air to pass through but closes to prevent food from moving into the airway. From the larynx, air moves into the trachea and down to the intersection known as the carina that branches to form the right and left primary (main) bronchi. Each of these bronchi branches into a secondary (lobar) bronchus that branches into tertiary (segmental) bronchi, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Insect
Aquatic insects or water insects live some portion of their life cycle in the water. They feed in the same ways as other insects. Some ''diving'' insects, such as predatory diving beetles, can hunt for food underwater where land-living insects cannot compete. Breathing One problem that aquatic insects must overcome is how to get oxygen while they are under water. Almost all animals require a source of oxygen to live. Insects draw air into their bodies through spiracles, holes found along the sides of the abdomen. These spiracles are connected to tracheal tubes where oxygen can be absorbed. All aquatic insects have become adapted to their environment with the specialization of these structures ;Aquatic adaptations # Simple diffusion over a relatively thin integument # Temporary use of an air bubble # Extraction of oxygen from water using a plastron or blood gill # Storage of oxygen in hemoglobin and hemocyanin molecules in hemolymph # Taking oxygen from surface via brea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leafhopper
Leafhopper is the common name for any species from the family (biology), family Cicadellidae: based on the type genus ''Cicadella''. These minute insects, colloquially known as hoppers, are plant feeders that suck plant sap from grass, shrubs, or trees. Their hind legs are modified for jumping, and are covered with hairs that facilitate the spreading of a secretion over their bodies that acts as a water repellent and carrier of pheromones. They undergo a partial metamorphosis, and have various host associations, varying from very generalized to very specific. Some species have a cosmopolitan distribution, or occur throughout the temperate and tropical regions. Some are pests or Vector (epidemiology), vectors of plant viruses and phytoplasmas. The family is distributed all over the world, and constitutes the second-largest hemipteran family, with at least 20,000 described species. They belong to a lineage traditionally treated as infraorder Cicadomorpha in the suborder Auchenorrhy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tettigarcta
''Tettigarcta'' is a genus of cicadas in the family Tettigarctidae. There are two described species in ''Tettigarcta'', one found in mainland Australia and one on the island of Tasmania. These two species are the only living species of the family Tettigarctidae, the rest being extinct. They are around 3.5 to 4.5 centimetres in length. The species are active at night and are attracted to light, and rest under loose bark during the day. Unlike other cicadas, they do not make loud calls, but produce low intensity sounds transmitted through the substrate they are attached to, similar to other members of Auchenorrhyncha. Species These two species belong to the genus ''Tettigarcta'': * '' Tettigarcta crinita'' Distant, 1906 * '' Tettigarcta tomentosa'' White, 1845 i c g Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net References External links * Tettigarctidae Auchenorrhyncha genera {{Auchenorrhyncha-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclochila Australasiae
''Cyclochila australasiae'' is a species of cicada and one of Australia's most familiar insects. It is distributed through coastal regions of southeastern Australia. Green specimens are commonly known as green grocers and yellow ones as yellow mondays. It is one of the loudest insects in the world. Taxonomy ''Cyclochila australasiae'' was first described as ''Tettigonia australasiae'' in 1805 by amateur zoologist Edward Donovan, who reported that it was common in New South Wales and many specimens had been collected and sent to England. Ernst Friedrich Germar named it ''Cicada olivacea'' in 1830. It was the second Australian species of cicada described after the double drummer (''Thopha saccata''). It was formerly commonly known as the Great Green Cicada; in addition, the various colour forms have different vernacular names, including Yellow Monday for a common yellow morph; Chocolate Soldier for a rare dark tan form; Blue Moon for a rare turquoise form; and Masked Devil fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decibel
The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a Power, root-power, and field quantities, power or root-power quantity on a logarithmic scale. Two signals whose level (logarithmic quantity), levels differ by one decibel have a power ratio of 101/10 (approximately ) or root-power ratio of 101/20 (approximately ). The strict original usage above only expresses a relative change. However, the word decibel has since also been used for expressing an Absolute scale, absolute value that is relative to some fixed reference value, in which case the dB symbol is often suffixed with letter codes that indicate the reference value. For example, for the reference value of 1 volt, a common suffix is "#Voltage, V" (e.g., "20 dBV"). As it originated from a need to express power ratios, two principal types of scaling of the decibel are used to provide consistency depending on whether the scaling refer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tymbal
The tymbal (or timbal) is the corrugated exoskeletal structure used to produce sounds in insects. In male cicadas, the tymbals are membranes in the abdomen, responsible for the characteristic sound produced by the insect. In tiger moths, the tymbals are modified regions of the thorax and produce high-frequency clicks. In lesser wax moths the left and right tymbals emit high-frequency pulses that are used as mating calls. The paired tymbals of a cicada are located on the sides of the abdominal base. The "singing" of a cicada is not stridulation as in many other familiar sound-producing insects like crickets (where one structure is rubbed against another): the tymbals are regions of the exoskeleton that are modified to form a complex membrane with thin, membranous portions and thickened "ribs". These membranes vibrate rapidly, and enlarged chambers derived from the tracheae enable the cicada's body to be a resonance chamber, greatly amplifying the sound. Some cicadas produce so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abdomen (insect Anatomy)
The abdomen (colloquially called the gut, belly, tummy, midriff, tucky, or stomach) is the front part of the torso between the thorax (chest) and pelvis in humans and in other vertebrates. The area occupied by the abdomen is called the abdominal cavity. In arthropods, it is the posterior tagma of the body; it follows the thorax or cephalothorax. In humans, the abdomen stretches from the thorax at the thoracic diaphragm to the pelvis at the pelvic brim. The pelvic brim stretches from the lumbosacral joint (the intervertebral disc between L5 and S1) to the pubic symphysis and is the edge of the pelvic inlet. The space above this inlet and under the thoracic diaphragm is termed the abdominal cavity. The boundary of the abdominal cavity is the abdominal wall in the front and the peritoneal surface at the rear. In vertebrates, the abdomen is a large body cavity enclosed by the abdominal muscles, at the front and to the sides, and by part of the vertebral column at the back. Lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Courtship Display
A courtship display is a set of display behaviors in which an animal, usually a male, attempts to attract a mate; the mate exercises choice, so sexual selection acts on the display. These behaviors often include ritualized movement ("dances"), vocalizations, mechanical sound production, or displays of beauty, strength, or agonistic ability. Male display In some species, males will perform ritualized movements to attract females. The male six-plumed bird-of-paradise ( ''Parotia lawesii'') exemplifies male courtship display with its ritualized " ballerina dance" and unique occipital and breast feathers that serve to stimulate the female visual system. In '' Drosophila subobscura,'' male courtship display is seen through the male's intricate wing scissoring patterns and rapid sidestepping. These stimulations, along with many other factors, result in subsequent copulation or rejection. In other species, males may exhibit courtship displays that serve as both visual and auditor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cicada
The cicadas () are a superfamily, the Cicadoidea, of insects in the order Hemiptera (true bugs). They are in the suborder Auchenorrhyncha, along with smaller jumping bugs such as leafhoppers and froghoppers. The superfamily is divided into two families, the Tettigarctidae, with two species in Australia, and the Cicadidae, with more than 3,000 species Taxonomy (biology)#Taxonomic descriptions, described from around the world; many species remain Undescribed taxon, undescribed. Nearly all cicada species are annual cicadas with the exception of the few North American periodical cicada species, genus ''Magicicada'', which in a given region emerge en masse every 13 or 17 years. Cicadas have prominent eyes set wide apart, short antennae, and membranous front wings. They have an exceptionally loud song, produced in most species by the rapid buckling and unbuckling of drum-like tymbals. The earliest known fossil Cicadomorpha appeared in the Upper Permian period; extant species occur a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
