نتایج جستجو برای: aquatic species

تعداد نتایج: 570306  

Journal: :Revista de biologia tropical 2015
María Constanza Gómez Lutz Arturo I Kehr Liliana A Fernández

Rice fields occupy large areas in Northeastern Argentina, and in Corrientes this widespead activity has become a feature in the landscape, as it is one of the main producing provinces. The aquatic Coleoptera is part of the fauna inhabiting these artificial environments but little is known about this group in irrigated rice fields. The aims of this study were to determine the diversity and speci...

2015
Kent MORI Satoshi SUZUKI Daisuke KOYABU Junpei KIMURA Sung-Yong HAN Hideki ENDO

Although the sea otter (Enhydra lutris) is a complete aquatic species, spending its entire life in the ocean, it has been considered morphologically to be a semi-aquatic animal. This study aimed to clarify the unique hindlimb morphology and functional adaptations of E. lutris in comparison to other Mustelidae species. We compared muscle mass and bone measurements of five Mustelidae species: the...

2009
B. B. SINGH

Pyridine, a suspected genotoxic and formaldehyde, a potent carcinogen, are present in several industrial wastewater including commercial solvent, resin and pesticide manufacturing industries. The extent of pyridine and formaldehyde toxicity in aquatic organisms is unknown. Therefore, in present study the toxicity of pyridine and formaldehyde were investigated in artificial aquatic ecosystem (mi...

2016
Johanna I. Murillo-Pacheco Matthias Rös Federico Escobar Francisco Castro-Lima José R. Verdú Germán M. López-Iborra

Accelerated degradation of the wetlands and fragmentation of surrounding vegetation in the Andean-Orinoco Piedmont are the main threats to diversity and ecological integrity of these ecosystems; however, information on this topic is of limited availability. In this region, we evaluated the value of 37 lentic wetlands as reservoirs of woody and aquatic plants and analyzed diversity and changes i...

ژورنال: آبزیان زینتی 2022

In the culture of freshwater and saltwater aquatic species, feeding is one of the most challenging stages. During this period of life, larvae are very sensitive and many of them need special food to meet their needs, if the food does not meet the needs of larvae in terms of nutrient composition and physical characteristics such as size and shape, the survival and growth of the larvae will be se...

2014
Zhi-Yuan Du Qing-Feng Wang

Aquatic plants are phylogenetically well dispersed across the angiosperms. Reproductive and other life-history traits of aquatic angiosperms are closely associated with specific growth forms. Hydrophilous pollination exhibits notable examples of convergent evolution in angiosperm reproductive structures, and hydrophiles exhibit great diversity in sexual system. In this study, we reconstructed a...

Journal: :Environment international 2015
Christy A Morrissey Pierre Mineau James H Devries Francisco Sanchez-Bayo Matthias Liess Michael C Cavallaro Karsten Liber

Neonicotinoids, broad-spectrum systemic insecticides, are the fastest growing class of insecticides worldwide and are now registered for use on hundreds of field crops in over 120 different countries. The environmental profile of this class of pesticides indicate that they are persistent, have high leaching and runoff potential, and are highly toxic to a wide range of invertebrates. Therefore, ...

2013
James E. McKenna

Wetlands are ecologically valuable and complex systems that both link and buffer aquatic and terrestrial systems. Spatial aspects and metacommunity concepts help explain community structure and dynamics, but metacommunity dynamics have not been applied to multiple interacting classes of organisms in temperate wetlands. The aim of this study was to 1) quantify significant patterns of wetland com...

Journal: :iranian journal of microbiology 0
m soltani department of aquatic animal health, faculty of veterinary medicine, university of tehran, tehran, iran. e pirali department of aquatic animal health, faculty of veterinary medicine, university of tehran, tehran, iran. p shayan department of parasitology, faculty of veterinary medicine, university of tehran, tehran, iran. b eckert investigation institute of molecular biology and system transfer (mbst), tehran, iran. s rouholahi department of aquatic animal health, faculty of veterinary medicine, university of tehran, tehran, iran. n sadr-shirazi investigation institute of molecular biology and system transfer (mbst), tehran, iran.

background and objective: streptococcosis/lactococcosis is the cause of high morbidity and mortality in aquaculture sector and to date a number of species of streptococcus and lactococcus genera including s. iniae, s. agalactiae, s. dysagalactiae, s. parauberis, s. feacalis, l. garvieae and l. lactis have been discriminated as the cause of disease in aquatic animals. despite the use of diagnost...

2002
Florida Lake Mark V. Hoyer

Hoyer, M. V.,j. Winn and D. E. Canfield,Jr. 2001. Citizenmonitoring ofaquatic bird populations using a Floridalake. Lake and Reserv. Manage. 17(2):82-89. Five years of monthly bird counts on a 2.32 km2 lake in north central Florida were used to examine the ability of a citizen volunteer to monitor aquatic bird populations. When compared to published aquatic bird data, collected by professional ...

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