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Cortinarius austrovenetus, alternately known as Dermocybe austroveneta and commonly known as the green skin-head but also known as green dermocybe [1] is an inedible brightly coloured green gilled fungus that naturally occurs in south eastern Australia.
From this, the brewing-related names arose for the herb, e.g. alehoof, tunhoof, and gill-over-the-ground. In the 18th century, beer brewed with ground ivy was known as gill ale and was said to have medicinal properties. [17] Enzymes similar to chymosin in G. hederacea have been used in the cheese-making process as a substitute for animal rennet ...
The gills are composed of comb-like filaments, the gill lamellae, which help increase their surface area for oxygen exchange. [5] When a fish breathes, it draws in a mouthful of water at regular intervals. Then it draws the sides of its throat together, forcing the water through the gill openings, so it passes over the gills to the outside.
The gill arches of bony fish typically have no septum, so that the gills alone project from the arch, supported by individual gill rays. Some species retain gill rakers . Though all but the most primitive bony fish lack a spiracle, the pseudobranch associated with it often remains, being located at the base of the operculum.
Cue the "Jaws" theme music. Inevitably every summer, several news outlets will report on the harrowing encounters between sharks and humans. While the odds of you actually being attacked by a ...
The external gill rami are lined with filaments (fimbriae) to increase surface area for gas exchange. [15] Four-gill slits lined with gill rakers are hidden underneath the external gills, which prevent food from entering and allow particles to filter through. Axolotls have barely visible vestigial teeth, which develop during metamorphosis.
Ram ventilation [11] is the process in which at higher speeds, the remora uses the force of the water moving past it to create movement of fluid in the gills. At lower speeds, the remora will use a form of active ventilation, [11] in which the fish actively moves fluid through its gills. In order to use active ventilation, a fish must actively ...
Research on genome expression in the mayfly Cloeon dipterum, has provided ideas on the evolution of the insect wing and giving support to the so-called gill theory which suggests that the ancestral insect wing may have evolved from larval gills of aquatic insects like mayflies.