نتایج جستجو برای: endangered fish

تعداد نتایج: 117273  

2012
Rayed Bean Angela Boyer

We, the U.S. Fish and Wildlife Service (Service), determine endangered status for the rayed bean (Villosa fabalis) and snuffbox (Epioblasma triquetra) mussels throughout their ranges, under the Endangered Species Act of 1973, as amended (Act). DATES: This rule becomes effective on March 15, 2012. ADDRESSES: This final rule is available on the Internet at http:// www.regulations.gov at Docket Nu...

ژورنال: :علوم و فنون شیلات 0
سمیه رضوی کارشناس ارشد، گروه زیست شناسی دریا، دانشکده علوم دریایی، دانشگاه تربیت مدرس، نور محمدصادق علوی یگانه عضو هیات علمی دانشگاه تربیت مدرس - دانشکده علوم دریایی. 'گروه زیست شناسی رحیم پیغان استاد، گروه بهداشت و بیماریهای آبزیان، دانشکده دامپزشکی، دانشگاه شهید چمران اهواز، اهواز

in the present investigation, infection of lernaeacruciata parasite is reported in farsi toothcarp (aphaniusfarsicus) collected from maharlu lake basin in 2014. the prevalence of infection appeared 88.9% (45 specimens). lernaeacruciataparasites were isolated from origin of fins, gill opercels and body surface. frequency of parasite on each fish appeared 1 or 2 which mostly attached to branch an...

Md. Rahman , B., Md. Rahman , M., Md. Sazedul Hoque , Z., Nahar, A.,

Agunmukha River is an important water body having plentiful aquatic resources. The fisheries communities in the river are familiar with a diverse range of fishing gear and crafts to catch fish. Therefore, the objectives of the present study were to explore fishing gear and fishing crafts, catch composition of the respective gearand identification of fish biodiversity of Agunmukha River. A step ...

Journal: :Environmental monitoring and assessment 2013
Andreas C Bryhn Mikaela A J Bergenius Peter H Dimberg Anders Adill

The main aim of this study was to investigate the number and biomass of impinged fish at Forsmark Nuclear Power Plant in Sweden, located on the coast of the Baltic Sea. Of particular interest was the number of impinged individuals of the critically endangered European eel (Anguilla anguilla) which is regularly caught in the cooling system. Another aim was to determine the comparability of the r...

Journal: :PLoS ONE 2007
Mark B. Bain Nancy Haley Douglas L. Peterson Kristin K. Arend Kathy E. Mills Patrick J. Sullivan

BACKGROUND More fish have been afforded US Endangered Species Act protection than any other vertebrate taxonomic group, and none has been designated as recovered. Shortnose sturgeon (Acipenser brevirostrum) occupy large rivers and estuaries along the Atlantic coast of North America, and the species has been protected by the US Endangered Species Act since its enactment. METHODOLOGY/PRINCIPAL ...

Journal: :Revista de biologia tropical 2011
Ernesto Velázquez-Velázquez David González-Solís Guillermo Salgado-Maldonado

The Asian fish tapeworm, Bothriocephalus acheilognathi, has been considered one of the most dangerous parasites for cultured carp and a risk for native freshwater fish populations worldwide. This cestode is highly pathogenic for fishes especially fry. In this paper we record B. acheilognathi parasitizing the endangered and endemic freshwater fish Profundulus hildebrandi from the endorheic basin...

2014
Roger Williams Rajeev Raghavan Neelesh Dahanukar Michael F. Tlusty Andrew L. Rhyne Krishna Kumar K. Krishna Kumar Sanjay Molur Alison M. Rosser

While the collection of fish for the aquarium pet trade has been flagged as a major threat to wild populations, this link is tenuous for the unregulated wild collection of endemic species because of the lack of quantitative data. In this paper, we examine the extent and magnitude of collection and trade of endemic and threatened freshwater fishes from India for the pet markets, and discuss thei...

Journal: :Journal of environmental biology 2009
Anish Dua Chander Parkash

Harike wetland was declared a Ramsar site in 1990. It is located at the confluence of two major rivers of Indus rivers system, the Beas and the Sutlej, but was never explored extensively for its existing fish biodiversity. Earlier only 27 fish species of commercial value were reported from the wetland. Acknowledging its importance for rich diversity fish assemblages in seven different reaches o...

2002
James W. Haefner Mark D. Bowen

Fish collection or diversion facilities are structures designed to remove fish from a channel where they may be endangered from pumps, power plants, or irrigation systems. The Tracy Fish Collection Facility in the Central Valley of California (USA) collects endangered and economically important species before they can enter the Delta Mendota Canal. We describe the structure, sensitivity, and pr...

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