نتایج جستجو برای: earthworm activity

تعداد نتایج: 1136287  

Journal: :Journal of environmental quality 2003
William D Shuster Martin J Shipitalo Scott Subler Susanne Aref Edward L McCoy Christina McKeegan

Earthworms affect soil structure and the movement of agrochemicals. Yet, there have been few field-scale studies that quantify the effect of earthworms on dissolved nitrogen fluxes in agroecosystems. We investigated the influence of semi-annual earthworm additions on leachate production and quality in different row crop agroecosystems. Chisel-till corn (Zea mays L.)-soybean [Glycine max (L.) Me...

Journal: :Chemosphere 2016
Jing Chang Yinghuan Wang Huili Wang Jianzhong Li Peng Xu

In this study, the bioavailability and enantioselectivity differences between bifenthrin (BF, typeⅠpyrethroid) and lambad-cyhalothrin (LCT, type Ⅱ pyrethroid) in earthworm (Eisenia fetida) were investigated. The bio-soil accumulation factors (BSAFs) of BF was about 4 times greater than that of LCT. LCT was degraded faster than BF in soil while eliminated lower in earthworm samples. Compound sor...

Journal: :Plant physiology 2002
Luciano Pasqualoto Canellas Fabio Lopes Olivares Anna L Okorokova-Façanha Arnoldo Rocha Façanha

Earthworms (Eisenia foetida) produce humic substances that can influence plant growth by mechanisms that are not yet clear. In this work, we investigated the effects of humic acids (HAs) isolated from cattle manure earthworm compost on the earliest stages of lateral root development and on the plasma membrane H(+)-ATPase activity. These HAs enhance the root growth of maize (Zea mays) seedlings ...

Objective: The study was conducted to investigate the antibacterial and anthelmintic activities and to determine total phenolic contents of methanolic extract of Piper betel leaves. Materials and Methods: The extract was subjected to assay for antibacterial activity using both gram positive and gram negative bacterial strains through disc diffusion method; anthelmintic activity with the determi...

2016
Michael Schirrmann Monika Joschko Robin Gebbers Eckart Kramer Mirjam Zörner Dietmar Barkusky Jens Timmer

BACKGROUND Earthworms are important for maintaining soil ecosystem functioning and serve as indicators of soil fertility. However, detection of earthworms is time-consuming, which hinders the assessment of earthworm abundances with high sampling density over entire fields. Recent developments of mobile terrestrial sensor platforms for proximal soil sensing (PSS) provided new tools for collectin...

Journal: :International journal of biological macromolecules 2007
Jing Zhao Rong Xiao Jian He Rong Pan Rong Fan Cheng Wu Xiang Liu Ying Liu Rong-Qiao He

Recently, the function in fibrinolysis of earthworm proteases has been studied. In our experiments, earthworm protease-II (EfP-II) and earthworm protease-III-1 (EfP-III-1) were isolated and purified from Eisenia fetida. As shown by the assay of sections of the earthworm on fibrin plates, the enzymic activity was mainly detected around the clitellum. In the presence of anti-EfP-II or anti-EfP-II...

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
Andrew R Holdsworth Lee E Frelich Peter B Reich

The invasion of exotic earthworms into northern temperate and boreal forests previously devoid of earthworms is an important driver of ecosystem change. Earthworm invasion can cause significant changes in soil structure and communities, nutrient cycles, and the diversity and abundance of herbaceous plants. However, the regional extent and patterns of this invasion are poorly known. We conducted...

Karimi Torshizi MA, Khajavi HR Rabbani Shokouh M Shahverdi AH

Background: Avian spermatozoa are characterized by high proportions of poly unsaturated fatty acid, associated with increased susceptibility to Reactive Oxygen Species and lipid peroxidation. Recent advances in poultry reproduction have focused on the potential of Reactive Oxygen Species as one of the prime mediators of infertility. Oxidative stress is the result of imbalance between the Reacti...

2010
Atul Kaushik

The World Health Organization estimates that a staggering two billion people harbor parasitic worm infections. Parasitic worms also infect livestock and crops, affecting food production with a resultant economic impact. In view of this, an attempt has been made to study the anthelmintic activity to validate the Eritrean unorthodox medicines. In this study, aqueous extracts of Acacia etbaica, Co...

2011
Yung-Ming Chang Ying-Ting Shih Yueh-Sheng Chen Chien-Liang Liu Wen-Kuei Fang Chang-Hai Tsai Fuu-Jen Tsai Wei-Wen Kuo Tung-Yuan Lai Chih-Yang Huang

The earthworm, which has stasis removal and wound-healing functions, is a widely used Chinese herbal medicine in China. Schwann cell migration is critical for the regeneration of injured nerves. Schwann cells provide an essentially supportive activity for neuron regeneration. However, the molecular migration mechanisms induced by earthworms in Schwann cells remain unclear. Here, we investigate ...

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