Cyprinella caerulea és una espècie de peix de la família dels ciprínids i de l'ordre dels cipriniformes.
Els mascles poden assolir els 10 cm de longitud total.[3][4]
Es troba a Nord-amèrica: Tennessee i des del nord-oest de Geòrgia fins a Alabama.[3]
Cyprinella caerulea és una espècie de peix de la família dels ciprínids i de l'ordre dels cipriniformes.
The blue shiner (Cyprinella caerulea) is a species of fish in the carp family. It is native to the southeastern United States, where it is endemic to the Cahaba and Coosa River systems of the Mobile River Basin. This is a federally listed threatened species under the Endangered Species Act of the United States.[2]
C. caerulea is endemic to the basin of the Mobile River. Because of population declines, it is now restricted to the Coosa River system in four disjunct populations in northeast Alabama, northwest Georgia, and southeast Tennessee.[3]
Within the Coosa River system, the fish was native to Choccolocco Creek, the Little River, Weogufka Creek, and Big Wills Creek in Alabama; the Coosawattee River the Oostanaula River in Georgia, and the Conasauga River in Georgia and Tennessee. The causes of the population declines are not fully clear, but they are likely due to the degradation of habitat and water degradation caused by urbanization, pollution, and sedimentation.[4] The extirpation from the Cahaba River in Alabama could be due to extensive urban development.[5] Efforts are currently being made to reverse the effects of habitat and water degradation. If they are successful, the blue shiner may be delisted.
The blue shiner is a temperate, freshwater fish that occupies benthopelagic zones in streams.[6] It occurs in second to fourth order streams with a moderate to low river currents, favoring sand and gravel substrates, and sometimes cobble. It generally remains at depths of 0.15 to 1 meter. It requires clear waters for feeding, because it is a visual drift feeder, taking invertebrates from the drift of the water column. Excess sedimentation in the habitat has an adverse effect on the fish, hindering its ability to feed.[7]
The spawning behavior of this species is similar to that of C. trichroistia and C. gibbsi. A single male will protect a territory and females arrive to deposit eggs.[8] During spawning, the female forcefully sprays eggs into crevices. It does not engage in parental care. Adequate water flows are required to remove debris and sediment, keeping open the crevices that the fish requires for egg deposition.[7] Clear waters are also required for the females to visualize the males, which perform displays to attract them.[9]
The spawning season of the blue shiner starts in early May and ends in late August. It may produce more than one clutch per season. The life span of the fish is about three years, with two-year-old individuals producing the most spawn.[3]
With water degradation being one of the main reasons for decline, conservation activities are focused on improving water quality. Construction near waterways should be reduced, as should dam-building and water pollution.[9]
Currently, the largest population of C. caerulea is in the Conasauga River.[10] This has become the focus of conservation efforts and research. Estimations of abundance are made by assessing individual subpopulations. Research activities include sampling using electrofishing and netting.[11]
The blue shiner (Cyprinella caerulea) is a species of fish in the carp family. It is native to the southeastern United States, where it is endemic to the Cahaba and Coosa River systems of the Mobile River Basin. This is a federally listed threatened species under the Endangered Species Act of the United States.
Cyprinella caerulea es una especie de peces de la familia de los Cyprinidae en el orden de los Cypriniformes.
Los machos pueden llegar alcanzar los 10 cm de longitud total.[2][3]
Es un pez de agua dulce.
Se encuentran en Norteamérica: cuencas de los ríos Coosa y Cahaba, en Tennessee y desde el noroeste de Georgia hasta Alabama.
Cyprinella caerulea es una especie de peces de la familia de los Cyprinidae en el orden de los Cypriniformes.
Cyprinella caerulea Cyprinella generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.
Cyprinella caerulea Cyprinella generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.
Cyprinella caerulea is een straalvinnige vissensoort uit de familie van de eigenlijke karpers (Cyprinidae).[2] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1877 door Jordan.
Bronnen, noten en/of referenties
Cyprinella caerulea là loài cá vây tia trong họ Cyprinidae. Nó chỉ được tìm thấy ở Hoa Kỳ.
Bài viết về Họ Cá chép này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Cyprinella caerulea là loài cá vây tia trong họ Cyprinidae. Nó chỉ được tìm thấy ở Hoa Kỳ.
