Results 121 to 130 of about 552 (176)

The origin of vertebrate teeth and evolution of sensory exoskeletons. [PDF]

Nature
Haridy Y, Norris SCP, Fabbri M, Nanglu K, Sharma N, Miller JF, Rivers M, La Riviere P, Vargas P, Ortega-Hernández J, Shubin NH.   +10 more
europepmc   +1 more source

Freshwater Mollusca of Kazakhstan (Central Asia): species composition and estimation of taxonomic richness. [PDF]

Zookeys
Nekhaev IO, Ishayeva AA, Vinarski MV, Babushkin ES.   +3 more
europepmc   +1 more source

Environmental Diagnosis through a Flow Cytometric Approach. [PDF]

Int J Mol Sci
Panza G, Frontalini F, Ciacci C, Protano G, Montanari M, Lopez D, Nannoni F, Papa S, Ortolani C, Rebecchi F, Fusi V, Santolini R, Canonico B.   +12 more
europepmc   +1 more source

First species record of Strigea falconis Szidat, 1928 (Trematoda, Strigeidae) from gyrfalcon Falco rusticolus in Iceland-pros and cons of a complex life cycle. [PDF]

Parasitol Res
Faltýnková A, Jouet D, Nielsen ÓK, Skírnisson K.   +3 more
europepmc   +1 more source

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An autoradiographic and cytophotometric study of oogenesis in a pulmonate snail, Planorbarius corneus

Cell and Tissue Research, 1988
The spatial and temporal patterns of macromolecular syntheses in oocytes and somatic auxiliary cells of the snail Planorbarius corneus have been investigated by autoradiography and cytophotometry. Oogenesis has been divided into three stages, comprising early meiosis up to diplotene (stage I), previtellogenetic growth phase (stage II), and ...
Werner Bottke, Arno Tiedtke
exaly   +2 more sources

Starvation and growth in the gastropod Planorbarius corneus (L.)

Hydrobiologia, 1978
The effect of different degrees of partial starvation on growth was studied in the fresh-water gastropodPlanorbarius corneus (L.). Two indices of growth were used, fresh weight and shell diameter, and for both indices the rate of growth decreased proportionately at least as much as the proportion of time that food was absent.
exaly   +2 more sources

Energy Metabolism in Postlarval Ontogenesis of Planorbarius corneus (Planorbidae, Gastropoda)

Russian Journal of Developmental Biology, 2019
The change in the rate and mass-specific rate of oxygen consumption was studied during individual ontogenesis of nine Planorbarius corneus individuals starting from 3 weeks after hatching until the death of animals. It is shown that, at the initial stages of development, the mass-specific rate of oxygen consumption increases, reaching a maximum at 3–7 ...
A A Zotin, Zotin A A
exaly   +2 more sources

Neuron-microglia communication in the CNS of the freshwater snailPlanorbarius corneus

Acta Biologica Hungarica, 2004
The aim of the present study was to identify molecules that may be involved in neuron-microglia communication in the CNS of freshwater snail Planorbarius corneus. Messenger molecules are exchanged in normal and pathological conditions and we tried to identify some of them by immunocytochemistry on whole ganglia and cell cultures.
Sonetti, D., Peruzzi, Elisa
openaire   +4 more sources

Intestinal cell types in the freshwater snail planorbarius corneus: Histochemical, immunocytochemical and ultrastructural observations

Tissue and Cell, 1992
The intestinal cell types of the pulmonate gastropodPlanorbarius corneus were studied using histochemical, immunocytochemical and ultrastructural procedures. Supporting cells, mucous cells and gland cells were observed in the intestine epithelium. The supporting cells seem to be involved in absorption process, showing endocytosis vesicles, evidence of ...
FRANCHINI, Antonella, OTTAVIANI, Enzo
openaire   +3 more sources