Anaplasma marginale is a bacterium that infects cattle, causing anaplasmosis. The spelling of this word can be explained using IPA phonetic transcription. The first syllable is pronounced "ænə", followed by "plæzmə" (with the "z" sound representing the "s" sound in the phonetic transcription). The second half of the word is pronounced "mɑːdʒɪneɪl", with the "ɑ" sound in "marginale" being like the "a" in "father". It's important to spell scientific terms correctly to avoid miscommunication and ensure accuracy in research.
Anaplasma marginale is a bacterium that belongs to the family Anaplasmataceae and the order Rickettsiales. It is the causative agent of bovine anaplasmosis, a disease predominantly affecting cattle. Anaplasmosis is a tick-borne illness that can occasionally infect other hosts, including wild ruminants and humans.
The bacterium A. marginale is small, intracellular, and typically infects erythrocytes (red blood cells) of its host. It is transmitted by ticks, especially Dermacentor ticks, although other blood-sucking insects such as horseflies can also transmit the bacteria. The clinical signs of anaplasmosis vary depending on the species of animal affected, but they usually involve anemia, fever, weight loss, reduced milk production, and potential death in severe cases.
In terms of morphology, A. marginale appears as basophilic bodies known as morulae within the infected erythrocytes. These morulae contain the bacteria and are easily observed under a light microscope. The bacterium utilises antigens located on the outer surface to evade the host's immune system, making it challenging to eliminate through the immune response alone.
Anaplasma marginale is a significant concern for the livestock industry due to its impact on animal health and economic losses associated with decreased productivity. Control and prevention strategies for anaplasmosis include tick control measures, vaccination, and early detection and treatment of infected livestock. Additionally, stringent biosecurity protocols need to be implemented to minimize the risk of A. marginale introduction to new herds or regions.
A name given to the organism when arranged near the margin of the red cell.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "Anaplasma" is derived from the Greek terms "ana" meaning "up" or "backward" and "plasma" meaning "something molded or formed". It refers to the way Anaplasma bacteria transform red blood cells by causing them to become irregularly shaped.
The term "marginale" is a Latin word meaning "at the edge" or "marginal". It is used to describe the location of Anaplasma marginale within the margins or periphery of infected red blood cells.