نتایج جستجو برای: aquatic

تعداد نتایج: 31460  

2016
Francisco Sánchez-Bayo Koichi Goka Daisuke Hayasaka

The widespread use of systemic neonicotinoid insecticides in agriculture results first in contamination of the soil of the treated crops, and secondly in the transfer of residues to the aquatic environment. The high toxicity of these insecticides to aquatic insects and other arthropods has been recognized, but there is little awareness of the impacts these chemicals have on aquatic environments...

2017
Eric J Sazama Michael J Bosch Carmelita S Shouldis Scot P Ouellette Jeff S Wesner

Wolbachia is a genus of intracellular bacteria typically found within the reproductive systems of insects that manipulates those systems of their hosts. While current estimates of Wolbachia incidence suggest that it infects approximately half of all arthropod species, these estimates are based almost entirely on terrestrial insects. No systematic survey of Wolbachia in aquatic insects has been ...

2002
JOHN L. SABO JUSTIN L. BASTOW MARY E. POWER

We collected 541 invertebrate specimens in riparian and upland habitats of the South Fork (SF) Eel River, California, USA, representing 12 orders and 55 families, and including adults of both aquatic and terrestrial origin. We fitted a power function to this data set at 4 taxonomic levels: 1) the entire pooled sample, 2) composite samples of aquatic and terrestrial taxa, 3) individual orders, a...

Journal: :Journal of oleo science 2008
Masaru Oya Yuka Takemoto Yusuke Ishikawa

LAS (Linear Alkylbenzene Sulphonate) shows relatively high aquatic toxicity in hard freshwater or seawater. In this paper, we studied the effect of adsorbent on the aquatic toxicity of LAS in hard freshwater and seawater. Daphnia magna and Artemia salina were used for acute aquatic toxicity test in freshwater and seawater, respectively. Kaolin was used as a model adsorbent and toxic surface ten...

2014
Wei-Chao Wang Huan Mao Dan-Dan Ma Wan-Xi Yang

*Correspondence: Wan-Xi Yang, The Sperm Laboratory, College of Life Sciences, Zhejiang University, 866 Yu Hang Tang Road, Hangzhou, Zhejiang 310058, China e-mail: [email protected] The documents on Metallothioneins (MTs) in aquatic creatures, especially focusing on their function as biomarkers in environmental monitoring programmes, are vast and increasing. There are, however, few papers to s...

Journal: :Journal of the American Association for Laboratory Animal Science : JAALAS 2012
Timothy J Mason Monte Matthews

The eighth edition of the Guide for the Care and Use of Laboratory Animals recognizes the widespread use of aquatic and semiaquatic research animals by including, among other references, an entire section on aquatic animals in its chapter on environment, housing, and management. Recognizing the large number of aquatic and semiaquatic species used in research and the inherent diversity in anima...

2012
Solange Meyin A. Ebong Sara Eyangoh Estelle Marion Jordi Landier Laurent Marsollier Jean-François Guégan Philippe Legall

Buruli ulcer is a debitliating human skin disease with an unknown transmission mode although epidemiological data link it with swampy areas. Data available suggest that aquatic insects play a role in the dissemination and/or transmission of this disease. However, their biodiversity and biology remain poorly documented. We conducted an entomological survey in Bankim, Cameroon, an area recently d...

2010
BECKY A. BALL JOHN S. KOMINOSKI HEATHER E. ADAMS STUART E. JONES EVAN S. KANE TERRANCE D. LOECKE WENDY M. MAHANEY

Global environmental changes have direct effects on aquatic ecosystems, as well as indirect effects through alterations of adjacent terrestrial ecosystem structure and functioning. For example, shifts in terrestrial vegetation communities resulting from global changes can affect the quantity and quality of water, organic matter, and nutrient inputs to aquatic ecosystems. The relative importance...

Journal: :Science 2008
Daniel A Cristol Rebecka L Brasso Anne M Condon Rachel E Fovargue Scott L Friedman Kelly K Hallinger Adrian P Monroe Ariel E White

Mercury has contaminated rivers worldwide, with health consequences for aquatic organisms and humans who consume them. Researchers have focused on aquatic birds as sentinels for mercury. However, trophic transfer between adjacent ecosystems could lead to the export of aquatic mercury to terrestrial habitats. Along a mercury-contaminated river in Virginia, United States, terrestrial birds had si...

2000
Bruno Gomez-Gil Ana Roque James F. Turnbull

Research in probiotics for aquaculture is at an early stage of development and much work is still needed. The principal bacterial groups tested as probionts in the culture of shrimp, crab, oyster and fish have been Vibrio, Pseudomonas, Bacillus, and several lactobacilli. The available information is inconclusive, since few experiments with sufficiently robust design have been conducted to permi...

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