Central American Region

Central American Region


in zoogeography, the part of the Tropical Realm that encompasses the continental shelf in the tropical parts of the eastern Pacific and western Atlantic (including the Caribbean Sea and Gulf of Mexico), that is, the waters on both sides of the Isthmus of Panama. The region is sometimes classified as a subregion of the Tropical Region.

Besides genera that are common to the tropics and genera that are endemic to either the western or the eastern side of the isthmus, the region has many endemic genera, especially among fish, crabs, and echinoderms, which are found on both sides of the isthmus. Such genera, called amphi-American genera, are represented in the Pacific and Atlantic by related but different species. The waters of the western Atlantic and the eastern Pacific contain few of the same species: only about 1 percent of the shelf s fish and mollusk species and 1–10 percent of other invertebrate species are identical. Amphi-American forms are also found among the deep-sea (bathyal and abyssal) bottom animals. The pelagic faunas on the two sides of the isthmus are completely different; only circumtropical species are common to both sides. The am-phi-American areas are vestiges of past geological ages (Cretaceous-Paleogene), when the eastern Pacific and the Caribbean were connected by a strait that was completely closed up in the Pliocene, about 5 million years ago.

The Central American Region is divided into two subregions: the western Atlantic and the eastern Pacific. In view of the small number of identical species, many zoogeographers consider the Central American Region to be an artificial unit and treat the two subregions as independent regions. The western Atlantic waters have 1.5 times more species than those of the eastern Pacific and, unlike the latter, have extensively developed coral reefs with their typical fauna.


Ekman, S. Zoogeography of the Sea. London, 1953.
Briggs, J. C. Marine Zoogeography. New York, 1974.


References in periodicals archive ?
As Dentons Muoz Central America, Dentons now covers the whole Central American region from our five offices in four countries: Guatemala, El Salvador, San Jos and Guanacaste in Costa Rica, and Panama.
US sales of weapons and equipment to the entire Central American region for 2004-2014 totaled about US$2 billion, it said, and Honduras took the lead with purchases just over US$1.
He was selected to lead Lidl's market entry into the United States in 2013 and laid some of the groundwork for that move, but he departed in 2015 to become CEO of the Caribbean and Central American region for Digicel, a wireless communications firm.
The book is important given the lack of analysis of those reforms in small countries in the Latin American literature and the scarce literature that analyzes the effect that trade agreements with the United States can have in the Central American region.
In terms of geography, the proppant market has been segmented into North and Central American region wherein the U.
Sally oversaw humanitarian aid to more than two million refugees in the Central American region in the following years.
For the Caribbean and Central American region, one of the most noteworthy events was the gain in operational efficiency as a result the consolidation of the operations in Honduras and French Guiana.
4%, the lowest growth rate for the whole Central American region, after El Salvador.
Central American region, is an additional risk mitigating factor.
In 2013 total sales of chicken meat in the Central American region amounted to $2.
The decision to settle in Valle del Cauca complies with the Department's strategic location, which will allow importation of raw materials and exportation of finished products to countries located in the Pacific Ocean, with this plant being the production and distribution hub for the Andean and Central American region.
5% of the diversity of central American region (4) MARENA, The Nature Conservancy, (2010, p.

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