Results 221 to 230 of about 136,323 (254)
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Interspecific Variation in Nematode Responses to Metals
Environmental Toxicology and Chemistry, 2020Abstract Performing toxicity testing on multiple species with differing degrees of evolutionary relatedness can provide important information on how chemical sensitivity varies among species and can help pinpoint the biological drivers of species sensitivity.
Andrew Heaton +5 more
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Interspecific variation in the emetic response of anurans
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 19911. The emetic response of seven species (four genera) of frogs to apomorphine hydrochloride, copper sulfate, antimonyl potassium tartrate and mechanical stimulation at the esophageal orifice was surveyed. Xenopus laevis and Rhacophorus schlegelii were more sensitive to systemically administered apomorphine than were the other species tested. 2.
T, Naitoh, M, Imamura, R J, Wassersug
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Interspecific and Intraspecific Variation in Cercariae Release
Journal of Parasitology, 2009Given the importance of temperature for the shedding of trematode infective stages (cercariae) from gastropod first intermediate hosts, we investigated the response to temperature increases of trematodes of the intertidal snail Zeacumantus subcarinatus collected from different latitudes (differing in mean annual summer temperature) on the South Island ...
J, Koprivnikar, R, Poulin
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MicroRNA regulation and interspecific variation of gene expression
Trends in Genetics, 2007MicroRNAs (miRNAs) modulate expression of their target genes in various tissues and at different developmental stages, but it is unclear whether they drive cross-species variation in gene expression. By comparing data from mammal and fly species we found that the cross-species expression variation of miRNA targets is significantly lower than that of ...
Cui, Qinghua +3 more
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Interspecific variations in proteins synthesized by mammalian mitochondria
Canadian Journal of Biochemistry, 1978The products of mitochondrial protein synthesis in established cell lines of various mammalian species were labelled with [35S]methionine and their number and apparent molecular weights determined by sodium dodecyl sulfate polyacrylamide slab gel electrophoresis and fluorography.
R W, Yatscoff +3 more
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Intra- and interspecific genome-size variation in the Salmonidae
Cytogenetic and Genome Research, 1992The nuclear DNA contents of 22 salmonid taxa, estimated primarily by flow-cytometric analysis relative to a chicken internal standard, were evaluated to compare intra- and interspecific variation in DNA content within this fish family. The average variability within taxa exceeded that among taxa. Intraspecific genome-size variation was substantial and,
S F, Lockwood, J N, Derr
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Interspecific variation in the hair proteins
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1972Abstract 1. Car☐ymethylated keratin extracts from twenty-two species of mammals and one species of bird were compared by polyacrylamide disc electrophoresis. 2. The relative mobilities of the protein bands were used to calculate coefficients of similarity between each pair of species. 3.
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Interspecific variations in seed germination of Corylopsis
Scientia Horticulturae, 2008Abstract This study was initiated to investigate the differences in germination percentages and rates between Corylopsis coreana Uyeki and Corylopsis sinensis var. calvescens Rehder & E.H. Wilson following a warm stratification (WS) and cold stratification (CS), and to study the effect of different WS temperatures interacting with different ...
Mark S. Roh +3 more
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Interspecific variation in the visual pigments of deep-sea fishes
Journal of Comparative Physiology A, 1989Visual pigments in the rods of 38 species of deep-sea fish were examined by microspectrophotometry. 33 species were found to have a single rhodopsin with a wavelength of maximum absorbance (lambda max) in the range 470-495 nm. Such visual pigments have absorbance maxima close to the wavelengths of maximum spectral transmission of oceanic water.
PARTRIDGE, JC +4 more
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Interspecific variation of isthmo-optic projections in poikilothermic vertebrates
Brain Research, 1994Retinopetal projections from isthmic and caudal mesencephalic regions were studied in a number of poikilothermic vertebrates. The tested animals were elasmobranchs, bony fishes, amphibians, and reptiles. Isthmo-optic projections were absent in elasmobranchs, sturgeons, most teleosts, all anuran and urodel amphibians, and in anolis lizards.
C R, Malz, D L, Meyer
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