Hydra

Journal of Ecosystem and Ecography  is an international open access journal publishing the quality peer-reviewed research articles relevant to the field of Environmental Sciences. The journal selects the articles to be published with a single bind, peer review system, following the practices of good scholarly journals. It supports the open access policy of making scientific research accessible to one and all.

Journal Impact Factor 0.02^* ; 1.5^* (5 Year Journal Impact Factor)
Submit manuscript at https://www.scholarscentral.org/submissions/ecosystem-ecography.html 

Hydra  is a genus of small, fresh-water organisms of the phylum Cnidaria and class Hydrozoa. They are native to the temperate and tropical regions.[2][3] Biologists are especially interested in Hydra because of their regenerative ability – they do not appear to die of old age, or indeed to age at all.

Hydra has a tubular, radially symmetric body up to 10 mm (0.39 in) long when extended, secured by a simple adhesive foot called the basal disc. Gland cells in the basal disc secrete a sticky fluid that accounts for its adhesive properties.

At the free end of the body is a mouth opening surrounded by one to twelve thin, mobile tentacles. Each tentacle, or cnida (plural: cnidae), is clothed with highly specialised stinging cells called cnidocytes. Cnidocytes contain specialized structures called nematocysts, which look like miniature light bulbs with a coiled thread inside. At the narrow outer edge of the cnidocyte is a short trigger hair called a cnidocil. Upon contact with prey, the contents of the nematocyst are explosively discharged, firing a dart-like thread containing neurotoxins into whatever triggered the release. This can paralyze the prey, especially if many hundreds of nematocysts are fired.

Hydra has two main body layers, which makes it "diploblastic". The layers are separated by mesoglea, a gel-like substance. The outer layer is the epidermis, and the inner layer is called the gastrodermis, because it lines the stomach. The cells making up these two body layers are relatively simple. Hydramacin is a bactericide recently discovered in Hydra; it protects the outer layer against infection. A single Hydra is composed of 50,000 to 100,000 cells which consist of three specific stem cell populations that will create many different cell types. These stem cells will continually renew themselves in the body column. Hydras have two significant structures on their body: the "head" and the "foot".

Accepted manuscripts submitted before the deadline will be published within the given timeframe for the respective journal publication.

Contact:

Grace

Journal Manager

Journal of Ecosystem and Ecography