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The stinging sea nettle (Chrysaora quinquecirrha) is a species of jellyfish occurring particularly in Atlantic estuaries. In Biology, a species is one of the basic units of Biological classification and a Taxonomic rank. Jellyfish are free-swimming members of the phylum Cnidaria. They have several different basic morphologies that represent several different cnidarian classes including the An estuary is a semi-enclosed Coastal body of Water with one or more Rivers or Streams flowing into it and with a free connection to the open It is a bell-shaped invertebrate, usually semi-transparent and with small, white dots and reddish-brown stripes; Sea nettles without stripes have a bell that appears white or opaque. An invertebrate is an Animal lacking a Vertebral column. The group includes 98% of all animal Species — all animals except those in the Chordate The nettle's sting is rated from "moderate" to "severe" and can be pernicious to smaller prey; it is not, however, potent enough to cause human death, except by allergic reaction. A stinger (a Colloquialism for the term "sting" is a common term for a sharp organ or body part found in various Animals (typically Arthropods Allergy is a disorder of the Immune system often also referred to as Atopy. While the sting is not particularly harmful, it can cause moderate discomfort to any individual stung. The sting can be effectively neutralized by misting vinegar over the affected area. This keeps unfired nematocysts from firing and adding to the discomfort. [1]
The sea nettle is radially symmetrical, marine, and carnivorous. Symmetry generally conveys two primary meanings The first is an imprecise sense of harmonious or aesthetically-pleasing proportionality and balance such that it reflects beauty or A carnivore (ˈkɑrnɪvɔər meaning 'meat eater' ( Latin carne meaning 'flesh' and vorare meaning 'to devour' is any animal with a diet consisting Its mouth is located at the center of one end of the body, which opens to a gastrovascular cavity that is used for digestion. The mouth, buccal cavity, or oral cavity is the first portion of the Alimentary canal that receives food and begins digestion by mechanically breaking up Gastro vascular cavity, as the name indicates functions in both Digestion and Gas exchange. Digestion is the breaking down of chemicals in the body into a form that can be absorbed It has tentacles that surround the mouth to capture food. Tentacles can refer to the elongated flexible organs that are present in some animals especially Invertebrates and sometimes to the hairs of the leaves of some insectivorous Nettles have no excretory or respiratory organs. In Biology, an organ ( Latin: organum, "instrument tool" from Greek όργανον - organon "organ instrument Each sea nettle is free-swimming and can reproduce both sexually and asexually. The Evolution of sexual reproduction is a major puzzle The first Fossilized evidence of sexually reproducing Organisms is from Eukaryotes of the Stenian Asexual reproduction is a form of reproduction which does not involve Meiosis, Ploidy reduction or Fertilization.
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Feeding habits
Stinging sea nettles are carnivorous. A carnivore (ˈkɑrnɪvɔər meaning 'meat eater' ( Latin carne meaning 'flesh' and vorare meaning 'to devour' is any animal with a diet consisting They generally feed on zooplankton, ctenophores, other jellies, and sometimes crustaceans. Zooplankton are the Heterotrophic (sometimes detritivorous) type of Plankton. The phylum Ctenophora (tɨˈnɒfərə commonly known as comb jellies, is a phylum that includes the Sea gooseberry ( Pleurobrachia pileus) and Structure of crustaceans As Arthropods crustaceans have a stiff Exoskeleton, which must be shed to allow the animal to grow ( Ecdysis or molting Nettles immobilize and obtain their prey using their stinging tentacles. After that, the prey is transported to the gastrovascular cavity where it is subsequently digested.
Nettles also eat young minnows, bay anchovy eggs, worms, and mosquito larvae. The anchovies are a family ( Engraulidae) of small common salt-water fish A worm is a common name given to a diverse group of invertebrate animals that have a long soft body and no legs Mosquitoes are insects in the family Culicidae. They have a pair of scaled wings a pair of Halteres, a slender body and long legs
Defense mechanisms
Each nettle tentacle is coated with thousands of microscopic nematocysts; in turn, every individual nematocyst has a "trigger" (cnidocil) paired with a capsule containing a coiled stinging filament. A cnidocyte, cnidoblast or nematocyte, is a type of Venomous cell unique to the Phylum Cnidaria ( Corals Upon contact, the cnidocil will immediately initiate a process which ejects the venom-coated filament from its capsule and into the target. This will inject toxins capable of killing smaller prey or stunning perceived predators. A toxin ( Greek:, toxikon, lit (poison for use on arrows is a Poisonous substance produced by living cells or organisms that is active at very low On humans, this will most likely cause a nonlethal, but nevertheless painful rash typically persisting for about 20 minutes. Pain, in the sense of physical pain, is a typical sensory experience that may be described as the unpleasant awareness of a noxious stimulus or bodily harm Some earlier cases of nettle stings from the Philippines reportedly had more severe effects: one account describes a sting causing vascular insufficiency, and another mononeuritis. Mononeuritis multiplex is the clinical picture that arises from problems with multiple individual nerves serially or almost simultaneously [2]
Rather than toxic substances, some nematocysts contain adhesion used to entangle or anchor its target. Adhesion is the tendency of certain dissimilar molecules to cling together due to Attractive forces.
Gallery
 Sea Nettle at the Georgia Aquarium. The Georgia Aquarium, located in Atlanta, Georgia at Pemberton Place, is billed as the "world's largest aquarium" with more than 8 |
 Sea nettle jellyfish at the Tennessee Aquarium. The Tennessee Aquarium, located in Chattanooga Tennessee, is the second largest (next to the Georgia Aquarium) freshwater aquarium in the world |
 Sea nettle Jellyfish (Chrysaora quinquecirrha) at the Monterey Bay Aquarium. The stinging sea nettle ( Chrysaora quinquecirrha) is a Species of Jellyfish occurring particularly in Atlantic estuaries The Monterey Bay Aquarium, which is located on the site of a former sardine cannery on Cannery Row in Monterey California, is one of the largest Aquariums |
 Sea nettle Jellyfish (Chrysaora quinquecirrha) at the Monterey Bay Aquarium. The stinging sea nettle ( Chrysaora quinquecirrha) is a Species of Jellyfish occurring particularly in Atlantic estuaries The Monterey Bay Aquarium, which is located on the site of a former sardine cannery on Cannery Row in Monterey California, is one of the largest Aquariums |
 Sea nettle Jellyfish (Chrysaora quinquecirrha) at the Monterey Bay Aquarium. The stinging sea nettle ( Chrysaora quinquecirrha) is a Species of Jellyfish occurring particularly in Atlantic estuaries The Monterey Bay Aquarium, which is located on the site of a former sardine cannery on Cannery Row in Monterey California, is one of the largest Aquariums |
 Sea nettle Jellyfish (Chrysaora quinquecirrha) at the Vancouver Aquarium. The stinging sea nettle ( Chrysaora quinquecirrha) is a Species of Jellyfish occurring particularly in Atlantic estuaries The Vancouver Aquarium Marine Science Centre is a public Aquarium located in Stanley Park in Vancouver British Columbia, Canada. |
 Sea nettle Jellyfish (Chrysaora quinquecirrha) at the Vancouver Aquarium. The stinging sea nettle ( Chrysaora quinquecirrha) is a Species of Jellyfish occurring particularly in Atlantic estuaries The Vancouver Aquarium Marine Science Centre is a public Aquarium located in Stanley Park in Vancouver British Columbia, Canada. |
 Sea nettle jelly (Chrysaora quinquecirrha) swimming down at the New England Aquarium. The stinging sea nettle ( Chrysaora quinquecirrha) is a Species of Jellyfish occurring particularly in Atlantic estuaries The New England Aquarium, located in Boston, Massachusetts, USA, is one of the most prominent and popular public aquariums in the United States |
See also
References
- ^ Jellyfish Stings. Box jellyfish are invertebrates belonging to the class Cubozoa, named for their Cube -shaped medusae.
- ^ Caravati, E Martin (2004). Medical Toxicology. Lippincott Williams & Wilkins, 1626. ISBN 0-7817-2845-2.
- MacKay, Bryan (1995). Hiking, Cycling, and Canoeing in Maryland: A Family Guide. Johns Hopkins University Press, 244-245. ISBN 0-8018-5035-5.
External links
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