نتایج جستجو برای: gammaridae
تعداد نتایج: 100 فیلتر نتایج به سال:
Octopus vulgaris is a species of great interest in research areas such as neurobiology, ethology, and ecology but also a candidate species for aquaculture as a food resource and for alleviating the fishing pressure on its wild populations. This study aimed to characterize the predatory behavior of O. vulgaris paralarvae and to quantify their digestive activity. Those processes were affordable u...
A new Gammarus species is identified based on the specimens collected from Morca Sinkhole, which was discovered in 2019 Anamur District, South of Türkiye. Eleven individuals belonging to newly were siphon located at end sinkhole (-1260 m). The can be distinguished by following character combinations and morphological features: blind, colorless (unpigmented) completely setae-covered body. Setae ...
به منظور آگاهی از پتانسیل غذای طبیعی رودخانه سفید رود در مسیر مهاجرت ماهیان در غالب طرح بررسی زیستی بچهماهیان سفید فون بنتیک رودخانه بررسی گردید. نمونهبرداری توسط دستگاه گراب با مقطع 400 سانتی متر مربع و با سه تکرار در5 ایستگاه در یک مسافت 2500 متری از مصب از زمستان 1391 الی زمستان 1392 در پنج دور انجام شد. براین اساس کلاً 6 خانواده ازکفزیان شناسایی شدند که از بین آنها لاروهای شیرونومید در تم...
Diet of adult pikeperch Sander lucioperca, Eurasian perch Perca fluviatilis, northern pike Esox lucius and European catfish Silurus glanis as top predators in aquatic ecosystems in Serbia was investigated during 2011, in order to understand their relationship to their prey and to investigate their food consumption, feeding and assimilation rate, cannibalism, and habitat segregation. Northern pi...
The rivers are under threat by numerous pollutions and their quality assessment is a need. Water quality of the Gamasiab River in Kermanshah Province was assessed using biological indices (BMWP and ASPT method). Six stations were selected and macro invertebrates were collected by surber sampler from July 2013 to May 2014. In this study, 11 families of the macro invertebrates from 10 orders were...
استفاده از شاخصهای زیستی ماکروبنتوزها در تعیین سلامت اکولوژیکی آب (مطالعه موردی: حوضه آبخیز بختگان)
زمینه و هدف: از آنجاییکه گونههای ماکروبنتوزها به طور قابل توجهی نسبت به آلودگیهای محیطزیست حساسیت نشان میدهند؛ میتوان از تغییرات ساختار اکولوژیک آنها برای استنتاج بار آلودگی وارد شده به اکوسیستم استفاده کرد. لذا مطالعه حاضر با هدف شناسایی ماکروبنتوزها ساکن و همچنین به منظور ارزیابی کارایی شاخصهای تک معیاره و چند معیاره برای تعیین سلامت اکولوژیکی آب حوضه آبخیز بخ...
Environmental change and growing anthropogenic pressure on water resources is increasing the duration intensity of drying events in streams many geographical locations. Favourable sediment characteristics (e.g. high porosity low fine load within substrate matrix) may facilitate benthic macroinvertebrate use subsurface sediments response to drying. However, influence sedimentary subsequent recov...
According to the increased probability of the presence of nanomaterials in the aquatic ecosystems, the present study examined the toxicity of three engineered silver nanoparticles (AgNPs) as well as silver ions in the Pontogammarus maeoticus, a brackish water benthic organism living in the littoral zone of the Caspian Sea. The animals were acutely exposed to different concentrations of two comm...
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