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An order of insects comprising the sucking lice, which are blood-sucking ectoparasites of mammals. Recognized families include: Echinphthiriidae, Hae…

An order of CRUSTACEA comprised of shrimp-like organisms containing body trunks with at least 20 segments. The are commonly used as aquarium food.

A genus of GRAM-POSITIVE ENDOSPORE-FORMING BACTERIA in the family Bacillaceae. Most species have been isolated from HOT SPRINGS.

An order of BIRDS comprising the waterfowl, particularly DUCKS; GEESE; swans; and screamers.

Any of various ruminant mammals of the order Bovidae. They include numerous species in Africa and the American pronghorn.

A plant genus of the family ASTERACEAE that is similar to MATRICARIA but this has tiny chaffy bract scales between each pair of florets. Members cont…

A plant division that includes hornworts, named for the horn-like appearance of the spore-producing plant (sporophyte).

A genus of SEA URCHINS synonymous with Heliocidaris, belonging to the family Echinometridae.

A class in the phylum CNIDARIA, comprised mostly of corals and anemones. All members occur only as polyps; the medusa stage is completely absent.

A plant genus of the family MORACEAE. Members have been used as an arrow poison.

A plant genus of the family Plantaginaceae. Members contain DEFICIENS PROTEIN.

A genus of brown-rot fungi in the family Coriolaceae. The biologically active ingredients of its species have potential pharmaceutical value.

Insects of the family Formicidae, very common and widespread, probably the most successful of all the insect groups. All ants are social insects, and…

An order of the class Amphibia, which includes several families of frogs and toads. They are characterized by well developed hind limbs adapted for j…

A family of the New World monkeys inhabiting the forests of South and Central America. There is a single genus (Aotus) and several species occurring …

A species in the family AOTIDAE, inhabiting the forested regions of Central and South America (from Panama to the Amazon). Vocalizations occur primar…

A suborder of FUNGI in the phylum MICROSPORIDIA, commonly lacking a pansporoblastic membrane. The sporoblast is usually dinucleate.

A form-genus of planktonic CYANOBACTERIA in the order Nostocales.

A genus of OOMYCETES in the family Saprolegniaceae. It causes root rot in plants and is also a pathogen of FISHES.

A family (Aphididae) of small insects, in the suborder Sternorrhyncha, that suck the juices of plants. Important genera include Schizaphis and Myzus.…

A genus of the family PICORNAVIRIDAE infecting mainly cloven-hoofed animals. They cause vesicular lesions and upper respiratory tract infections. FOO…

A large plant family in the order Apiales, also known as Umbelliferae. Most are aromatic herbs with alternate, feather-divided leaves that are sheath…

A phylum of unicellular parasitic EUKARYOTES characterized by the presence of complex apical organelles generally consisting of a conoid that aids in…

A genus comprising several species of flowering plants with global distribution in the family APIACEAE.

An opisthobranch mollusk of the order Anaspidea. It is used frequently in studies of nervous system development because of its large identifiable neu…

The dogbane family of the order Gentianales. Members of the family have milky, often poisonous juice, smooth-margined leaves, and flowers in clusters.

A plant genus of the family APOCYNACEAE. On rare occasions it is called Milkweed, but should not be confused with true Milkweed (ASCLEPIAS).

A genus of RNA viruses in the family BIRNAVIRIDAE infecting fish, mollusks, and crustaceans. It is transmitted both vertically and horizontally with …

Organisms that live in water.

A thermophilic, gram-negative genus of bacteria in the phylum Aquificae and the family Aquificaceae. Rod-shaped and non-spore forming, this genus is …