Results 91 to 100 of about 9,122 (188)

Inheritance in parthenogenesis and in sexual reproduction in a cladoceran.

open access: yesExperimental Biology and Medicine, 1926
For some years we have been making studies with Cladocera on the occurrence of mutations and their inheritance in parthenogenesis. Four mutant characters have been studied in Daphnia longispina. The inheritance is complete, since every parthenogenetic young from a mutant individual genetically possesses the mutant character (except, of course, for the ...
A. M. Banta, K. G. Snider, T. R. Wood
openaire   +1 more source

The Effects of Ocean Warming and Acidification on Fatty Acid Contents of Marine Organisms: A Global Meta‐Analysis

open access: yesGlobal Change Biology, Volume 32, Issue 8, August 2026.
This global meta‐analysis across 132 marine species found that ocean warming decreases nutritional quality by reducing polyunsaturated fatty acids, including the health‐critical omega‐3 fatty acids EPA and DHA. These changes lead to declines in omega‐3: omega‐6 ratios of up to 53%, and increases in saturated FAs of up to 21%, with shifts strongest in ...
Bethany Rose Dawson   +4 more
wiley   +1 more source

Nutritional status response of Daphania laevis and Moina micura from a tropical reservoir to different algal diets: Scenedesmus quadricauda and Ankistrodesmus gracilis

open access: yesBrazilian Journal of Biology
The accumulation of lipid reserves was investigated in two common cladoceran species typical of neotropical freshwaters. Experiments were performed in order to measure differential accumulation of lipid reserves in response to two algal diets, S ...
C. F. MACEDO, R. M. PINTO-CORLHO
doaj   +1 more source

Environmental and spatial factors influencing the distribution of cladocerans in lakes across the central Canadian Arctic treeline region

open access: yes, 2010
We examine the role of local environmental and spatial factors in explaining variation in the composition of cladoceran assemblages from surface sediments within a set of 50 lakes spanning a broad southwest to northeast transect across the central ...
Jon N. Sweetman, K. Rühland, J. Smol
semanticscholar   +1 more source

Sedimentary DNA and Fossil Archives Reveal Long‐Term Phytoplankton Shifts and Their Biogeochemical Influence in a Subtropical Lake

open access: yesMolecular Ecology, Volume 35, Issue 16, August 2026.
ABSTRACT Understanding long‐term phytoplankton community dynamics is essential for assessing ecological resilience and informing lake management under global change. However, centennial‐scale patterns of phytoplankton dynamics remain poorly resolved due to the limited taxonomic resolution of traditional fossil‐based paleoecological approaches.
Yu Zhao   +10 more
wiley   +1 more source

An overview of Cladoceran studies conducted in mine water impacted lakes

open access: yesInternational Aquatic Research, 2018
Mine-fed waters have been rigorously studied, but most of the ecological research on mine water has been conducted in riverine systems. Lakes, however, are known to recover from pollution more slowly than riverine systems and, thus, the impacts of mine ...
Jaakko Johannes Leppänen
doaj   +1 more source

Zooplankton biomass of reservoirs in different trophic conditions in the State of São Paulo, Brazil

open access: yesBrazilian Journal of Biology
This paper reports on a study involving an estimate of the biomass of rotifers, cladocerans, and cyclopoid and calanoid copepods found in reservoirs in different trophic conditions, comparing and relating numerical density data and pointing out ...
S. Sendacz, S. Caleffi, J. Santos-Soares
doaj   +1 more source

Diel horizontal distribution of microcrustaceans and predators throughout a year in a shallow neotropical lake Distribuição horizontal de microcrustáceos e predadores ao longo do ano em um lago neotropical

open access: yesBrazilian Journal of Biology, 2013
The focus of this study is to investigate if microcrustaceans undergo diel horizontal migration (DHM) in a tropical shallow lake on a yearly basis and analyse the adaptive value regarding predation.
MS. Arcifa   +3 more
doaj  

Nutritional status response of Daphania laevis and Moina micura from a tropical reservoir to different algal diets: Scenedesmus quadricauda and Ankistrodesmus gracilis

open access: yesBrazilian Journal of Biology, 2001
The accumulation of lipid reserves was investigated in two common cladoceran species typical of neotropical freshwaters. Experiments were performed in order to measure differential accumulation of lipid reserves in response to two algal diets, S ...
MACEDO C. F., PINTO-CORLHO R. M.
doaj  

Cladoceran assemblage in a mesotrophic reservoir

open access: yes, 2003
Cladoceran assemblage patterns were investigated in a meso-eulrophic reservoir from January 2000 till December 2002. Trends of environmental factors (water temperature, conductivity, pH, and nutrient concentrations), as well as of biotic factors (availability of potentially edible phytoplankton and densities of herbivorous and carnivorous copepods ...
Geraldes, Ana Maria   +1 more
openaire   +1 more source

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