نتایج جستجو برای: invertebrates

تعداد نتایج: 13852  

Journal: :Current Biology 2016
Gonzalo Giribet

The genome of an orthonectid, a group of highly modified parasitic invertebrates, is drastically reduced and compact, yet it shows the bilaterian gene toolkit. Phylogenetic analyses place the enigmatic orthonectids within Spiralia, although their exact placement remains uncertain.

Journal: :Integrative and Comparative Biology 2003

Objective(s): To present a brief overview of various natural sources of antimicrobials with the aim of highlighting invertebrates living in polluted environments as additional sources of antimicrobials. Materials and Methods: A PubMed search using antibacterials, antimicrobials, invertebrates, and natural products as keywords was carried out. In addition, we consulted conference proceedings, or...

Journal: :South African Journal of Zoology 1984

Journal: :the iranian journal of pharmaceutical research 0
mahbobeh afzali mashhad branch,islamic azad university javad baharara 1. animal developmental biology, research center for animal development applied biology& dept. biology, mashhad branch, islamic azad university, mashhad, iran khadijeh shahrokhabadi mashhad branch,islamic azad university elah amini kharazmi university

leukemia is a blood disease which is caused by the inhibition of differentiation and an increased proliferation rate. nature has been known as a rich source of medically useful substances. high diversity of bioactive molecules extracted from marine invertebrates, makes them ideal candidates for cancer researches. the study has been done to investigate cytotoxic effects of dichloromethane brittl...

2005
Allen Allison Ronald Englund

Animals are important and conspicuous elements inPacifi c Island ecosystems. They are crucial to the fl ow of energy and nutrients within ecosystems and they strongly infl uence, and in some cases control, the species composition and population structure of communities. Determining which animal species are present in an area and what they do is crucial to understanding how ecosystems function a...

Journal: :international journal of environmental research 0
r. ahmadi iranian artemia research center, p.o. box: 57157-1367 urmia, iran f. mohebbi west azerbaijan water authority organization, urmia, iran p. hagigi west azarbaijan environment protection organization, urmia, iran l. esmailly west azarbaijan environment protection organization, urmia, iran r. salmanzadeh west azarbaijan environment protection organization, urmia, iran

this research summarizes the data on benthic macro invertebrates collected from 25 points in the urmia lake wetlands during november 2008 to february 2009. the purpose of the study was to assess the effects of elevated salinity and nutrient (nitrogen and phosphorus) levels on macro invertebrate abundance and composition. a total of 32 taxa were collected, and the common taxa, including chironom...

Journal: :Applied Entomology and Zoology 2006

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