Entry Category: Science and Medicine - Starting with A

The Asian longhorned tick (Haemaphysalis longicornis) is an ectoparasite belonging to the Phylum Arthropoda, Class Arachnida, Order Acari, and Family Ixodidae. The Asian longhorned tick is native to temperate areas of eastern and central Asia, including China, Japan, and Korea, as well as various Pacific islands, including Australia, New Zealand, Fiji, New Caledonia, western Samoa, Vanuatu, and Tonga. In August 2017, a tick from an Icelandic sheep (Ovis aries) brought to the Hunterdon County Health Department in New Jersey was identified as H. longicornis. In November 2017, a large number of H. longicornis were discovered on a sheep farm, again in Hunterdon County. This tick had also been intercepted at U.S. port cities on imported animals and materials several times …

An interesting group within the Class Trematodes (flukes) includes the Subclass Aspidogastrea. The Aspidogastrea is a very small taxon with around eighty species within thirteen genera, and their hosts include molluscs (sometimes spelled “mollusks”) and various vertebrates. They are of particular curiosity among parasitologists because of their unique structure, their simple life cycles (which may well be the most “primitive” ones among the trematodes), and the extraordinarily complex sensory/nervous systems found in some species.  There has been some debate among taxonomists about the relationships of the various genera of aspidogastreans; however, according to the prevalent view, there are four families as follows:  (1) Rugogastridae: with two caeca and single row of transverse rugae comprising a single genus Rugogaster; there are two species from the rectal glands of holocephalan ratfishes;  (2) Stichocotylidae: with one caecum and a single row of well separated suckerlets; includes a monotypic species (Stichocotyle nephropis) from …

Atherinopsids, or neotropical silversides, belong to the order Atheriniformes and family Atherinopidae. There are about 104 species within thirteen genera found in euryhaline, marine, and freshwater habitats distributed throughout the tropical and temperate waters of the Western Hemisphere. Three well-known atherinopsid fishes are the Atlantic silverside (Menidia menidia), California grunion (Leuresthes tenuis), and Gulf grunion (L. sardina). There are three species in Arkansas: the brook silverside (Labidesthes sicculus), golden silverside (L. vanhyningi), and Mississippi silverside (Menidia audens). Prior to the Neogene Period of the late Tertiary Period (66 to 2.5 million years ago), there is no fossil record of atherinopsids in North America. However, on San Francisco Bay, important prehistoric intertidal fisheries were especially well documented for atherinopsids. Silversides are …

Audubon Arkansas was established in 2000 as the twenty-fifth state office of the National Audubon Society through a seed grant from the Winthrop Rockefeller Charitable Trust. Audubon Arkansas’s mission is to inspire and lead Arkansans in environmental education, resource management, habitat restoration, bird conservation, and enlightened advocacy. In 2003, Audubon Arkansas was recognized as “Conservation Organization of the Year” by the Arkansas Wildlife Federation. Robert Shults was the founding board chairman of Audubon Arkansas. Shults, an Arkansan, served on the National Audubon Society board of directors from 1980 to 1986. The chairman of the National Audubon Society at the time was Donal C. O’Brien. O’Brien and Shults both served on the board of trustees of the Winthrop Rockefeller Charitable Trust. …

John James Audubon, a frontier naturalist and artist, is famous for illustrating and writing The Birds of America. He visited Arkansas Territory in 1820 and 1822 and documented Arkansas’s birds, including the Traill’s flycatcher, also known as the willow flycatcher, which is the only bird originally discovered in Arkansas. John Audubon was born Jean Rabin on April 26, 1785, in Saint-Domingue (Haiti). He was the illegitimate child of Jean Audubon, a ship’s captain, and Jeanne Rabin, a French chambermaid. His mother died in 1785 or 1786, and Jean Audubon and his children returned to France after a slave revolt. Along with his sister, he was adopted by his father and stepmother in 1794. Audubon stayed with his father and stepmother …