Results 51 to 60 of about 20,517 (166)

Viability of subitaneous eggs of the copepod, Acartia tonsa (Dana), following exposure to various cryoprotectants and hypersaline water [PDF]

open access: yes, 2009
Subitaneous eggs were obtained from monocultures of the calanoid copepod Acartia tonsa (Dana), Gulf of Mexico strain. Eggs were exposed to methanol, ethylene glycol, propylene glycol, glycerine, and DMSO at 0.0, 0.1, 0.5, 1.0, 2.0, and 5.0 M and ...
Ohsa, Cortney L.   +2 more
core   +2 more sources

Zooplankton in Ancient and Oligotrophic Lake Ohrid (Europe) in Association with Environmental Variables

open access: yesCroatian Journal of Fisheries, 2017
Zooplankton is studied in the ancient, tectonic, oligomictic and oligotrophic Lake Ohrid (Macedonia, South Eastern Europe). The main aim of this study was to assess the seasonal and spatial patterns of the zooplankton functional feeding guilds in ...
Tasevska Orhideja   +5 more
doaj   +1 more source

Zooplankton richness, abundance and biomass of two hypertrophic shallow lakes with different salinity [PDF]

open access: yes, 2012
The zooplankton of lakes is controlled by biological and physico-chemical parameters. Among the former, predation by fish can determine the replacement of large-sized species by small-sized ones and among the latter, salinity exerts negative effects on ...
Cabrera, Gabriela Cecilia   +3 more
core  

Factors affecting methylmercury biomagnification by a widespread aquatic invertebrate predator, the phantom midge larvae Chaoborus [PDF]

open access: yes, 2012
MeHg biomagnification by the phantom midge Chaoborus in relation to MeHg concentrations in their prey and its migratory behavior was investigated in two Canadian Precambrian Shield lakes.
Aldamman, Lama   +5 more
core   +2 more sources

Fatores que podem afetar a criação e manutenção de caramujos infectados e a produção de cercárias de Schistosoma masoni Factors that can affect the breeding and maintenance of infected snails and yield of cercariae of Schistosoma mansoni

open access: yesMemorias do Instituto Oswaldo Cruz, 1987
Foram estudados fatores que afetam a produção em massa de cercárias do Schistosoma mansoni. Rotíferos e ostracodos causaram diminuição de produção em nossa colônia.
Cecília Pereira de Souza   +3 more
doaj   +1 more source

Invertebrate communities in northern Lake Victoria, with reference to their potential for fishery production [PDF]

open access: yes, 1999
The zooplankton and macrobenthic communities of Lake Victoria were sampled by lift net and Ponar grab, respectively. The zooplankton comprised copepods and cladocerans, rotifers and aquatic insect larvae. Most taxa exhibited wide distribution in the lake,
Kiggundu, V., Ndawula, L.M., Ochieng, H.
core  

Assessment of the water quality of ten Waikato lakes based on zooplankton community composition. CBER Contract Report No. 60 [PDF]

open access: yes, 2007
Zooplankton communities were documented from ten Waikato lakes from net haul samples collected in late 2006 and from species hatched from diapausing eggs in sediments collected in early 2007.
Duggan, Ian C.
core   +1 more source

Specificity of zooplankton distribution in meteorite crater ponds (Morasko, Poland)

open access: yesKnowledge and Management of Aquatic Ecosystems, 2013
This study was conducted in order to define the most important factors responsible for the zooplankton community structure inhabiting four meteorite crater ponds, located near the city of Poznań (Poland).
Kuczyńska-Kippen N.   +2 more
doaj   +1 more source

Soil nematode communities in grasslands [PDF]

open access: yes, 2007
This thesis summarizes the results of five studies investigating the effect of plant species on soil nematode communities in grasslands. Nematodes (roundworms) are ubiquitous members of the soil fauna and have been much used as indicators of soil ...
Viketoft, Maria
core  

The Desiccation of Rotifers [PDF]

open access: yesThe American Naturalist, 1908
THE general statement of ten found in text-books that "Adult rotifers can survive prolonged desiccation and resume active life when again placed in water," seems to have been mnade without sufficient warrant. While working with the rotifer, Asplancha briiyltizvell ii, my attention was repeatedly called to the fact that when the water became ...
openaire   +1 more source

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