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The gills and stem are white with no ring. Full grown specimens have blue-green, flowery, cup-shaped caps; the gills are creamy white, or reflect the blue-green color of the cap. The cap's surface feels rough. The stem is thick, is attached to the gills with no rings, and is textured, with a pale-yellow colour.
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.
Between 20 and 30 gills reach from the cap edge to the stem, resulting in a gill spacing that is described as "close to subdistant"—gaps are visible between adjacent gills. There are additional gills, called lamellulae, that do not extend directly from the margin to the stem; these are arranged in two or three series (tiers) of equal length.
The temperature of the nest determines the sex of the turtles at around the 20–40 day mark. Green Sea Turtles are type 1a, meaning males develop at cooler temperatures while females are produced under hot temperatures. [83] [84] At around 50 to 70 days, [85] the eggs hatch during the night, and the hatchlings instinctively head directly into ...
The nymph is the dominant life history stage of the mayfly. Different insect species vary in their tolerance to water pollution, but in general, the larval stages of mayflies, stoneflies (Plecoptera) and caddis flies (Trichoptera) are susceptible to a number of pollutants including sewage , pesticides and industrial effluent .
The greengill sunfish (Lepomis macrochirus × cyanellus) is sometimes referred to as hybrid sunfish or bluegill x green sunfish hybrid. It is a hybrid between a bluegill (Lepomis macrochirus) and green sunfish (Lepomis cyanellus). [1] They can sometimes be found in ponds, lakes, or streams where there is both bluegill and green sunfish.
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.
From this, the brewing-related names arose for the herb - 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. [11] Enzymes similar to chymosin in G. hederacea have been used in the cheese-making process as a substitute for animal rennet ...