?Main Image: Steer fitted with a global positioning system (GPS) collar to examine cattle responses to prescribed burns at the Central Plains Experimental Range in...
DomesticationLast Updated on 2014-10-19 17:21:38Domestication is defined as the keeping of animals in captivity by a human community that maintains total control over their breeding, organization of territory, and food supply. True domestication involves a combination of biological and cultural processes. The biological process begins with the separation of a few animals from the wild species and their taming by humans; if these animals breed, a founder group is formed, which is changed over future generations both in response to natural selection under the control of humans and the animal's environment and by artificial selection for economic, cultural, or aesthetic goals. In the cultural process, animals are incorporated into the social structure of a human community and become objects of ownership, inheritance, purchase, and exchange.
Clutton-Brock, Juliet. 1999. A Natural History of Domesticated Mammals.... More »
Carpenter beeLast Updated on 2014-06-26 17:31:14
This hexapod (six-legged) insect is a bee in the subfamily Xylocoinae of either the genus Ceratina or Xylocopa that makes its nest in wood or plant stems.
Along with bumble bee queens, carpenter bees (genus Xylocopa) are the largest native bees in the United States. There are numerous species of carpenter bees that inhabit a broad range of ecosystems from tropical to subtropical to temperate. In the United States carpenters bees can be found across the southern United States from Arizona to Florida and in the eastern United States, north to New York.
These gentle giants get their name from their life history habits of excavating precisely rounded galleries inside wood. Using their broad, strong mandibles (jaws), they chew into dead but non-decayed limbs or trunks of standing dead trees. Some species, like the eastern Xylocopa virginica, occasionally take up residence... More »
Black-footed penguinLast Updated on 2014-06-20 17:13:50Also known as the 'African Penguin' or 'Cape Penguin', and 'Jackass Penguin', the Black-footed penguin (scientific name: Spheniscus demersus) is one of seventeen species of flightless birds in the family of penguins (Spheniscidae). It is one of four co-called "Banded Penguins" in the genus Spheniscus, which also includes the Humboldt, Magellanic and Galapagos penguins.
Kingdom: Animalia (Animals)
Class:------ Aves (Birds)
Family:-------- Spheniscidae (Penguins)
Genus:--------- Spheniscus (Banded Penguins)
Species:-------- Spheniscus demersus (Linnaeus, 1758)
Like all penguins, the Black-footed penguin is... More »
Asian Carp and the Great Lakes RegionLast Updated on 2014-06-20 13:48:30
Alien species of Asian carp are a significant ongoing adverse ecological threat to the Great Lakes of North America. Chief pathways for the introduction of these species has been from the waterways of the city of Chicago, Illinois. The U.S. Congress and federal regulatory agencies are investigating protocols to reduce alien species influxes from Chicago waterways into the Great Lakes, whose fishery value is approximately seven billion dollars per annum. The city of Chicago has resisted environmental protection initiatives, on the grounds that the city's commercial interests may be harmed.
Four species of non-indigenous Asian carp are expanding their range in U.S. waterways, resulting in a variety of concerns and problems. Three species—bighead, silver, and black carp—are of particular note, based on the perceived degree of environmental concern. Current controversy... More »
Florida Black BearLast Updated on 2013-10-29 16:30:17When the American black bear (Ursus americanus) in Florida was first scientifically described in 1896 by naturalist C. Hart Merriam, he thought its long skull and highly arched nasal bones distinguished it from black bears in other areas and classified it as a separate species (Ursus floridanus), which he called the Everglades bear. Subsequent analyses around 1960 revised the status of these bears to the Florida black bear (U. a. floridanus), one of 16 recognized subspecies .
Species:-- Ursus americanus Pallas, 1780
Black bears are... More »
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