نتایج جستجو برای: fish distribution
تعداد نتایج: 706269 فیلتر نتایج به سال:
BACKGROUND: The plerocercoid stage of Pseudophyllideancestoda infected a wide range of fresh water fish,particularly the members of the Cyprinidae family. The parasitespecies are the most common pathogens that have severe effectson fish. OBJECTIVES: The aim of the present study is todetermine the occurrence and distribution of the plerocercoid ofDiphyllobothriidae in two freshwater fish from no...
Now more and more ecologists concern about the impacts of dam construction on fish. However, studies of fishes downstream Gezhouba Dam were rarely reported except Chinese sturgeon (Acipenser sinensis Gray). In this study, catch investigations and five hydroacoustic detections were completed from 2015 to 2016 to understand the distribution, size, and categories of fishes and their relationship w...
Understanding and predicting the distribution of organisms in heterogeneous environments lies at the heart of ecology. The spatial distribution of fish populations observed in the wild results from the complex interactions of multiple controls both external or internal to the fish populations. Whilst species distribution models (SDMs) have been mostly concerned with static description of specie...
Survey of fish larvae abundance, diversity and distribution was carried out in different habitats of Khark and Kharko coralline islands and islets from July 2006 to June 2007 over 12 stations. Khark and Kharko ecosystems are protected areas and wildlife refuges in northern point for fringing coral reefs in Iranian side of the Persian Gulf. This investigation was a part of the national Integrate...
The present study was conducted based on the fish species and physicochemical parameters of Eğirdir Lake. Sampling was carried out monthly from January through December 2010 between 9 am and 11 am. The parameters measured were water temperature, depth, secchi disk depth, turbidity, dissolved oxygen, saturation of dissolved oxygen, pH, conductivity, chloride, hardness, calcium, magnesium, bicarb...
The present study was conducted based on the fish species and physicochemical parameters of Eğirdir Lake. Sampling was carried out monthly from January through December 2010 between 9 am and 11 am. The parameters measured were water temperature, depth, secchi disk depth, turbidity, dissolved oxygen, saturation of dissolved oxygen, pH, conductivity, chloride, hardness, calcium, magnesium, bicarb...
Fishes are one of the most commonly introduced aquatic taxa worldwide, and invasive fish species pose threats to biodiversity and ecosystem function in recipient waters. Considerable research efforts have focused on predicting the invasibility of different fish taxa; however, accurate records detailing the establishment and spread of invasive fishes are lacking for large numbers of fish around ...
background: the widespread use of chemical insecticides, resistance in vectors and environmental problems, all have led to an increased interest in the use of biological agents in malaria control programs. the most important functional elements are the native fish. the aim of this study was to identify the native species of lavivorous fish in rudan county, southern iran, to introduce an effecti...
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