Name: Snakeheads (Pisces, Channidae): A Biological Synopsis and Risk Assessment: Usgs Circular 1251 (en Inglés)
Price: 97012.00 COP
Availability: InStock
Author: U. S. Department of the Interior, United ; Courtenay, Walter R. ; Williams, James D.
ISBN: 9781287185574

portada Snakeheads (Pisces, Channidae): A Biological Synopsis and Risk Assessment: Usgs Circular 1251 (en Inglés)

Snakeheads (Pisces, Channidae): A Biological Synopsis and Risk Assessment: Usgs Circular 1251 (en Inglés)

Formato

Libro Físico

Autor

United U. S. Department of the Interior

James D. Williams

Walter R. Courtenay

Editorial

Bibliogov

Idioma

Inglés

N° páginas

154

Encuadernación

Tapa Blanda

Dimensiones

24.6 x 18.9 x 0.8 cm

Peso

0.29 kg.

ISBN13

9781287185574

Categorías

Política y gobierno

Snakeheads (Pisces, Channidae): A Biological Synopsis and Risk Assessment: Usgs Circular 1251 (en Inglés)

United U. S. Department of the Interior (Autor) · James D. Williams (Autor) · Walter R. Courtenay (Autor) · Bibliogov · Tapa Blanda

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Reseña del libro "Snakeheads (Pisces, Channidae): A Biological Synopsis and Risk Assessment: Usgs Circular 1251 (en Inglés)"

Snakeheads (family Channidae) are airbreathing freshwater fishes containing two genera, Channa with 26 species native to Asia, Malaysia, and Indonesia; and Parachanna with 3 species native to tropical Africa. Some snakeheads are small, reaching about 17 centimeters, but most are much larger, the largest reported to be 1.8 meters in length. All are considered thrust predators with most being piscivorous as adults. A few of the smaller snakeheads and colorful juveniles of some larger ones have been available to hobbyists through the aquarium fish trade. Several species are highly valued as food fishes within parts of their native ranges, especially in Asia where they are an important part of capture fisheries and aquaculture. Because of these uses by humans, introductions far beyond native ranges have occurred. One Asian snakehead has been established in Oahu, Hawaii, since before 1900. Another species was discovered established in southeastern Florida in 2000, and a third in a pond in Maryland in 2002. Others have been captured from natural waters of the United States without evidence of reproduction and likely represent released aquarium fishes. That snakeheads at or near sexual maturity were being sold alive in ethnic food markets raised fears that they could be introduced into novel waters. These concerns led to this study on the biology of snakeheads. A risk assessment is included that examines environmental and related aspects of snakehead introductions.