The endangered species act, according to Stephen O’Brien, identifies and protects plant and animal species whose population is critically threatened. The three categories of biological taxa that the Act tries to protect include species, subspecies, and population. According to O’Brien, the meaning of terms such as taxonomy, and the occurrence of hybridization between species, has led to disaggreements by government officials.
Scientist’s use molecular genetics to investigate many of the questionable endangered species. The problem according to O’brien is that the molecular genetics results have interpretation difficulties. In his article, “Bureaucratic mischief: recognizing endangered species and subspecies,” O’Brien summarized the molecular report on these four endangered groups: the Florida panther (Felis concolor coryi), the gray wolf (Canis lupus), the red wolf (Canis rufus), and the dusky seaside sparrow (Ammodramus maritimus nigrescens). The four examples represent the critical role taxonomy plays in the enforcement of the Endangered Species Act, and the power of molecular genetic data.
To define species and subspecies, O’Brien went with the Biological Species Concept (BSC), which defined a species as “groups of actually or potentially interbreeding populations that are reproductively isolated from other such groups.”
Recommendations for the four endangered species were given according to O’Briens interpretation of The Hybrid Policy of the Endangered Species Act. Which he believes should discourage hybridization between species, but shouldn’t be applied to subspecies because they interbreed freely in nature.
Другие работы по теме:
Rivel Poppers Essay Research Paper A
Rivel Poppers Essay, Research Paper A Rivet Poppers Personally, I do not agree with much of what has been said in this article. I see this as an extreme example of leftist propaganda. The only purpose of this article is to shoot down the practices of the common people. I found it especially intriguing when the authors named almost every politician of the day, stating that they are all rivet poppers.
Round Goby Essay Research Paper The Round
Round Goby Essay, Research Paper The Round Goby As if there weren?t enough problems for scientists trying to save the Great Lakes Eco System. Many non-native species have entered the eco system and many of them are harmful. Every species in itself has played a role in the eco system. These non-native species make it increasingly difficult for the Great Lakes Eco System to be regulated.
Biodiversity Essay Research Paper Biodiversity is described
Biodiversity Essay, Research Paper Biodiversity is described by Ruth Patrick as, ?the presence of a large number of species of animals and plants??(Patrick 15). In other words, biodiversity is the term for the measure of the variety of different species that do exist still on our plant. These species can range from the simplest bacteria to the very complex primates.
The Five Kingdoms Essay Research Paper The
The Five Kingdoms Essay, Research Paper The Five Kingdoms Monera This biological kingdom is composed of bacteria and cyanobacteria, one-celled (sometimes colonial) organisms whose cells lack a nuclear envelope, mitochondria, or plastids. They reproduce asexually through fission (splitting in two) and mainly gain their nutrition by absorbing it from their environment (though some species are chemoautotrophs or photosynthetic).
Drought Essay Research Paper DroughtA few of
Drought Essay, Research Paper Drought A few of the things they discussed were the fact that it didn’t need to be hot to have a drought, the colors of the leaves during the fall, the fact that most perennials wouldn’t survive, and how some of the animal species wouldn’t survive either.
Cloning Endangered Species Essay Research Paper Cloning
Cloning Endangered Species Essay, Research Paper Cloning is the production of duplicate copies of genetic materials, cells, or entire multi-cellular living materials. For years cloning had only been a fantasy, but with new scientific research cloning can be very successful. Because there are so many advantages in areas like agriculture, medicine, and biological research in producing genetically identical organisms, artificial cloning has become the focus of attention with scientists today.
Boa Snakes Essay Research Paper Boa is
Boa Snakes Essay, Research Paper Boa is the common name for about 6 genera and 50 species of SNAKES that constitute the family Boidae. Closely related to PYTHONS, the family includes the largest of all
Lemurs Essay Research Paper Lemurs meaning ghosts
Lemurs Essay, Research Paper Lemurs, meaning ghosts, are primates that are found only on the island of Madagascar. They can weigh up too eight pounds. Their tails can be up to 25 inches long. And can live up to 15 years. There are 40 different species of lemurs. They are all different in ways. Some are nocturnal, while others hunt during the day.
Evolution
: ‘Sympatric Speciation’ Essay, Research Paper Despite the title of Charles Darwin’s most famous work, the mechanisms whereby species originate are poorly known. The textbook view is that populations of a species become physically separated, so that individuals are denied the opportunity of interbreeding.
Effects Of Foreign Species Introduction On An
Ecosystem Essay, Research Paper The effects of foreign species introduction on an ecosystem The effects of foreign species introduction into an ecosystem are very profound. From small microorganisms to species of large mammals, many foreign species introductions occur every day. New implications of their introduction are found just as often.
Plant Autogamy Essay Research Paper Plant Autogamy
Plant Autogamy Essay, Research Paper Plant Autogamy Self fertilization or autogamy is a reproductive strategy used by some species of plants. Autogamous plants tend to have fewer flowers and the flowers themselves tend to be smaller with smaller reproductive structures than those of plants that reproduce sexually.
Jaguars Essay Research Paper Endangered Species Study
Jaguars Essay, Research Paper Endangered Species Study: Jaguars I. The jaguars of Central and South America have been being killed for game and protection. This cat used to have homes around the United States to Uruguay,
Essence Of Time Essay Research Paper The
Essence Of Time Essay, Research Paper The Essence of Time The male species has a very creative mind. The creative mind becomes particularly active when the case involves the female species. In Andrew Marvell?s “To His Coy Mistress,” the author shows how his creative mind is put to use. Marvell, uses time in an attempt to manipulate his coy mistress.
The Orgin Of The Species By Charles
Darwin (1809-1882) Essay, Research Paper Habitual instincts are inherited within each species. Ants and bees build their nests and hives with no previous
Evolution Essay Research Paper EvolutionA species cannot
Evolution Essay, Research Paper Evolution A species cannot be created by mutating a species. No matter how many mutations occur the mutation does not evolve the species. No one has ever produced a species by means of natural selection.
Archeo Essay Research Paper A Cross Cultural
Archeo Essay, Research Paper A Cross Cultural Perspective of Polygyny As an institution, polygyny, the social arrangement that permits a man to have more than one wife at the same
Goldenrod Essay Research Paper Goldenrod is common
Goldenrod Essay, Research Paper Goldenrod is common name for certain related plants of the composite family. The Canada goldenrod is really ?Solidago canadensis?. They are typical autumn flowers of the United States that grow in a great variety of habitats: woods, meadows, hills, and rocky ground. For many years goldenrod was considered a major cause of hay fever, but experiments with goldenrod pollen have indicated that it is virtually harmless.
New Discoveries In Biogeograph Essay Research Paper
New Discoveries in Biogeography About thirty years ago, two men, Robert H. MacArthur and Edward O. Wilson began a journey to test a theory of biogeography. They developed their theory by observing how on an island when one species of ant becomes extinct, a new one replaces it. From this they concluded that large islands have more species than small islands and that remote islands have fewer species than less remote ones.
Purple Prairie Clover Essay Research Paper The
Purple Prairie Clover Essay, Research Paper The Purple Prairie Clover I would like to tell you about the Purple Prairie Clover. The Purple Prairie Clover is a beautiful flower to see. In the following, I will tell you about it.
Blue Whale Essay Research Paper The Blue
Blue Whale Essay, Research Paper The Blue Whale The blue whale or balaenoperta musclus is the largest animal to ever have lived on Earth. Whalers have reported this whale to being over 100 feet long and weighing over 150 tons!
Starfish Essay Research Paper The common name
Starfish Essay, Research Paper The common name for the starfish is the sea star. There are an estimated 1500 living species of these marine animals characterized by having no back
H Habilis Essay Research Paper Homo habilis
H. Habilis Essay, Research Paper Homo habilis is the earliest known species of the genus. It existed from approximately 2.2 to 1.6 million years ago in east Africa. Only a few fossil remains have been discovered so far, but these specimens exhibit a clear trend toward larger brain size. H. habilis brains are about 30% larger than those of A. africanus.
Evolution Essay Research Paper Evolution The process
Evolution Essay, Research Paper Evolution The process by which all living things have developed from primitive life forms through changes occurring over billions of years is evolution. All living things arose through a long history of changes formed by physical and chemical processes that are still taking place.
Human Species Essay Research Paper The human
Human Species Essay, Research Paper The human species has been changing for millions of years. From the specimen commonly know as Lucy , it is possible that two species evolved: Australopithecus boisei, and Australopithecus africanus. These two forms are more commonly know as robust and gracile australopithecines.
Chicken Or Egg Essay Research Paper Which
Chicken Or Egg Essay, Research Paper Which came first, Chicken? Or Egg? The answer is that this is the wrong question. The trouble here is the word ‘First’s. A human life contains many firsts, so the word comes easily to our lips. For example, a creationist could ask how the metamorphosis of a butterfly occurred for the ‘First time’.
Truth And Belief Essay Research Paper Truth
Truth And Belief Essay, Research Paper Truth and Belief James is a believer in the pragmatic theory of truth. He draws a relationship between the good and the true. The true is not an separate entity from good, but is one of the species of good.
Nostoc Information Essay Research Paper Scientific name
Nostoc Information Essay, Research Paper Scientific name – Kingdom- Monera, Phylum- Cyanobacteria, Class- NA, Order- nostocaler, Family- Nostocaceae, Genus- Nostoc, Species- caeruleumDescription- Nostoc is a one celled autotrophic organism that performs photosynthesis with out chloroplasts.
Inherit The Wind Essay Research Paper MahaThe
Inherit The Wind Essay, Research Paper Maha The Theme of Inherit the Wind The theme of Inherit the Wind by Jerome Lawrence and Robert Lee is the right to think. One example that supports the theme is that Drummond tries to prove Bert Cates is on trial because he uses his right to think. Drummond asks Howard?s opinion on morality, so he can establish that ?anyone in this courtroom . . . has the right to think? (64).