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The hydra effect or hydra paradox owes its name to the Greek legend of the Lernaean Hydra which grew two heads for each one cut off, and is used figuratively for counter-intuitive effects of actions to reduce a problem which result in stimulating its multiplication. Most notably, scientists have proposed that ecological systems can exhibit a ...
They then bring the food to their mouth, ingest and digest the organism. Anything that cannot be digested is egested. Ingestion and egestion occur through the mouth. Like other hydras, Hydra vulgaris cling to a base object with a "foot" pad, shaped like a disk. The Hydra moves by releasing its grip on its base and is carried away by the current.
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; ... Hydra viridissima; Hydra vulgaris; T. Transgenic hydra
Hydra (/ ˈ h aɪ d r ə / HY-drə) is a genus of small freshwater hydrozoans of the phylum Cnidaria.They are native to the temperate and tropical regions. [2] [3] The genus was named by Linnaeus in 1758 after the Hydra, which was the many-headed beast of myth defeated by Heracles, as when the animal has a part severed, it will regenerate much like the mythical hydra's heads.
H. vulgaris may refer to: Hippuris vulgaris, the common mare's tail, a common aquatic plant species found in Eurasia; Hydra vulgaris, a small freshwater hydroid species; Hydrocotyle vulgaris, the marsh pennywort, a small creeping perennial herb species native to North Africa, Europe, Florida and west to the Caspian region
A majority of American workers report being satisfied with their jobs, but the cost of living and higher pay are still top concerns, according to an EIG survey.
By Satoshi Sugiyama. TOKYO (Reuters) -Yuichiro Tamaki, the head of the Japanese opposition party that has emerged as kingmaker as lawmakers select the next prime minister on Monday, said a tabloid ...
Human interactions with microbes include both practical and symbolic uses of microbes, and negative interactions in the form of human, domestic animal, and crop diseases. Practical use of microbes began in ancient times with fermentation in food processing ; bread , beer and wine have been produced by yeasts from the dawn of civilisation, such ...