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Effects of NaCl salinity on the population dynamics of freshwater zooplankton (rotifers and cladocerans)
Salinization of freshwater bodies due to anthropogenic activity is currently a very serious problem in Mexico. One of the consequences may be changes in the rotifer and cladoceran populations, bothExpand
Lifetable demography of four cladoceran species in relation to algal food (Chlorella vulgaris) density
Algal food density is known to influence life history variables of cladoceran species. It is not, however, well established whether both littoral and planktonic cladocerans show similar trends whenExpand
Population growth of some genera of cladocerans (Cladocera) in relation to algal food (Chlorella vulgaris) levels
We studied the patterns of population growth of 7 cladoceran species (Alona rectangula, Ceriodaphnia dubia, Daphnia laevis, Diaphanosoma brachyurum, Moina macrocopa, Scapholeberis kingi andExpand
Phylogenetic Relationships of Acanthocephala Based on Analysis of 18S Ribosomal RNA Gene Sequences
Abstract. Acanthocephala (thorny-headed worms) is a phylum of endoparasites of vertebrates and arthropods, included among the most phylogenetically basal tripoblastic pseudocoelomates. The phylum isExpand
Life history strategies of cladocerans: comparisons of tropical and temperate taxa
We review recent works on different life tropical and temperate freshwater bodies, comparing the strategies that cladocerans have evolved to adapt to contrasting environmental conditions in the twoExpand
Demographic parameters of Brachionus patulus Muller (Rotifera) exposed to sublethal DDT concentrations at low and high food levels
The combined effects of sublethal levels of DDT (0, 15, 30, 45, and 60 µg·l−1) and food (Chlorella at 1 and 3 × 106 cells ml−1) on the demography of the rotifer Brachionus patulus were studied. TheExpand
Life history strategies of cladocerans: comparisons of tropical and temperate taxa
We review recent works on different life history variables of cladoceran taxa in tropical and temperate freshwater bodies, comparing the strategies that cladocerans have evolved to adapt toExpand
Seasonal Variations in the Species Diversity of Planktonic Rotifers in Lake Xochimilco, Mexico
ABSTRACT We collected rotifers during one year (2002–2003) from four different sites in Lake Xochimilco and analyzed the species diversity. We found on an average 25–30 species co-existing at any oneExpand
Acute and chronic toxicity of the pesticide methyl parathion to the rotifer Brachionus angularis (Rotifera) at different algal (Chlorella vulgaris) food densities
Methyl parathion is a commonly used insecticide in Mexico to eradicate insect pests. We evaluated the effects of this insecticide on rotifer B. angularis using both acute and chronic toxicity tests.Expand
Comparative Life Table Demography and Population Growth of Brachionus macracanthus DADAY, 1905 and Platyias quadricornis EHRENBERG, 1832 (Rotifera, Brachionidae) in Relation to Algal (Chlorella
We tested the effect of five different concentrations (0.25 · 106, 0.5 · 106, 1.0 · 106, 2.0 · 106 and 4 · 106 cells mL—1) of the green alga Chlorella vulgaris on the life table demography andExpand
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