نتایج جستجو برای: fish species

تعداد نتایج: 627866  

A. Mirzajani J. Sabkara S. Bagheri,

The ecosystem of the Caspian Sea have been strikingly changed by human activities. This area has undergone significant ecological alterations and serious environmental degradation since the beginning of 1990s. The impact of fish cage culture on the zooplankton community was studied in the southwestern Caspian Sea, off Jafrud during January to April 2013. A total of 12 zooplankton belonging to 9...

Bagheri, S., Mirzajani , A., Sabkara, J.,

The ecosystem of the Caspian Sea have been strikingly changed by human activities. This area has undergone significant ecological alterations and serious environmental degradation since the beginning of 1990s. The impact of fish cage culture on the zooplankton community was studied in the southwestern Caspian Sea, off Jafrud during January to April 2013. A total of 12 zooplankton belonging to 9...

2014
Jong-Yil Chai Woon-Mok Sohn Byoung-Kuk Na Tai-Soon Yong Keeseon S. Eom Cheong-Ha Yoon Eui-Hyug Hoang Hoo-Gn Jeoung Duong Socheat

A survey was performed to investigate the infection status of freshwater fish with zoonotic trematode metacercariae in Phnom Penh and Pursat Province, Cambodia. All collected fish with ice were transferred to our laboratory and examined using the artificial digestion method. In fish from Phnom Penh, 2 kinds of metacercariae (Opisthorchis viverrini and Haplorchis yokogawai) were detected. O. viv...

2016
Louise S. L. Teh Vicky W. Y. Lam William W. L. Cheung Dana Miller Lydia C. L. Teh U. Rashid Sumaila

We investigate how high seas closure will affect the availability of commonly consumed food fish in 46 fish reliant, and/or low income countries. Domestic consumption of straddling fish species (fish that would be affected by high seas closure) occurred in 54% of the assessed countries. The majority (70%) of countries were projected to experience net catch gains following high seas closure. How...

2017
R.S.E.W. LEUVEN A. J. HENDRIKS M.A.J. HUIJBREGTS H.J.R. LENDERS J. MATTHEWS G. VAN DER VELDE

This paper describes the effects that temperature changes in the Rhine river distributaries have on native and exotic fish diversity. Site-specific potentially affected fractions (PAFs) of the regional fish species pool were derived using species sensitivity distributions (SSDs) for water temperature. The number of fish species in the river distributaries has changed remarkably over the last ce...

ژورنال: آبزیان زینتی 2019
hatefi, shima, Nahavandi, Reza,

Undoubtedly having lush and interesting plants in the aquarium, in addition to beauty, has a favorable effect on fish. These plants, in addition to create beauty in the aquarium space, provide an environment close to the natural habitat of ornamental fish. The benefits of using aquatic plants in the aquarium include adjusting the water hardness and pH, increasing the dissolved oxygen in the wat...

2005
R. M. CONNOLLY A. DALTON

Fish associated with Australian saltmarshes have previously been sampled fi-om within creeks or semi-permanent pools on the marsh; this is the first record of fish use of marsh flats inundated on high tides but emergent on low tides. Buoyant pop nets (9 m^ 1 mm mesh) were used to collect fish from two areas of the marsh flat on Torrens Island in the Barker Inlet-Port River estuary. South Austra...

Journal: :iranian j. of fisheries science 0

diet of adult pikeperch sander lucioperca, eurasian perch perca fluviatilis, northern pike esox lucius and european catfish silurus glanis as top predators in aquatic ecosystems in serbia was investigated during 2011, in order to understand their relationship to their prey and to investigate their food consumption, feeding and assimilation rate, cannibalism, and habitat segregation. northern pi...

.H. R Esmaeili .M Akhlaghi .Z Gholami

Aphaniusisfahanensis is a new endemic killifish species that has been described in the Zayandeh River of the Isfahan basin in Iran. During a study on the biology of nine fish from this species, the parasite Diplostomumspathaceum was observed in the aqueous humor of the eye of a single individual. It was visible as a white mass with a diameter of 0.38 mm. This is the first report on the infectio...

Journal: :Current Biology 2011
Mark E. Nelson

Figure 1. Types and distribution of electric fish. Species of electric fish can be found in freshwater rivers of Africa and South America, as well as marine environments. Marine species are depicted in blue, freshwater species in yellow. Strongly electric fish use electricity to stun their prey, while weakly electric fish use electricity for sensing and communication. The waveform above each fi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید