Results 171 to 180 of about 20,449 (221)

Ultrastructure of epidermis of Salamandra salamandra followed throughout ontogenesis

Cell and Tissue Research, 1977
Ventral epidermal ultrastructure of the amphibian urodele Salamandra salamandra is described and followed throughout its life cycle. Tadpoles were divided into five categories on the basis of the organization of their epidermis and the ultrastructure of its cells. In newly hatched tadpoles the epidermis is arranged in two layers and four types of cells
M R Warburg
exaly   +3 more sources

Seasonal and Annual Survival of the SalamanderSalamandra salamandra salamandra

Journal of Herpetology, 2014
Abstract Survival is an important component of population growth rate. We use data from a 9-yr mark-recapture study to estimate annual and monthly survival probabilities of adult salamanders (Salamandra salamandra). Monthly survival probability was 0.98–0.99 and did not differ between summer and winter. Annual survival probability was 0.86.
Schmidt, B R, Itin, E, Schaub, M
openaire   +2 more sources

Cultures of Skin Fragments of Salamandra salamandra salamandra (L.) Larvae

Pigment Cell Research, 1998
As part of a study on the pigmentary system of Salamandra salamandra salamandra (L.), we cultured skin fragments of 7–10‐day‐old larvae in order to examine the expression of molecules implicated in cellular adhesion and migration and in regulating cell‐cell relationships. Keratinocytes, fibroblasts, Leydig cells, xanthophores, and melanophores migrated
PEDERZOLI, Aurora, RESTANI, Cinzia
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Gut hormones in Salamandra salamandra

Cell and Tissue Research, 1980
Histological, cytochemical and immunocytochemical methods were used in light and electron microscopical studies to demonstrate the presence of a neuroendocrine system in the gut of the urodele, Salamandra salamandra. Cytochemical stains capable of detecting peptide-producing endocrine cells demonstrate cells reacting with Masson's silver (argentaffin ...
A M, Buchan, J M, Polak, A G, Pearse
openaire   +2 more sources

Morphological differentiation of taste organs in the ontogeny of Salamandra salamandra

Anatomy and Embryology, 2001
Morphological studies presented here provide additional cytological evidence that in the postnatal development of Salamandra salamandra there are two successive generations of taste organs: premetamorphic taste buds (TBs) in larval forms and taste disks (TDs) in postmetamorphic animals.
K, Zuwała, M, Jakubowski
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The lampbrush chromosomes of Salamandra salamandra (L.) (Amphibia Urodela)

Chromosoma, 1969
Lampbrush chromosomes isolated from the germinal vesicle of medium sized oocytes can be individually identified by differences in two characters: (1) chromosome regions rich in well developed loops, and (2) number and position of spheres. Actually the lateral loops are not all equally extended, but those which are inserted in a certain region of the ...
Mancino G, Barsacchi G, NARDI, IRMA
openaire   +3 more sources

Sexual steroids in Salamandra salamandra (L.) during ontogeny

General and Comparative Endocrinology, 1991
In order to investigate the ontogeny of steroid secretions during the juvenile phase, sexual steroids were extracted and assayed after chromatographic separation in the gonads and plasma of male and female salamanders Salamandra salamandra L. at three characteristic postlarval stages. All specimens were collected in the wild.
D H, Garnier, J, Joly
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Cytochemical and immunocytochemical investigations on epidermal mitochondria-rich cells in Salamandra salamandra salamandra (L.) larvae

Tissue and Cell, 1997
In the present study we set out to investigate the expression of E-cadherin, N-cadherin, beta 1-integrin, fibronectin and vitronectin in the mitochondria-rich cells (MRC) of the skin of Salamandra salamandra salamandra. Moreover MRC were stained with five lectins (Triticum vulgaris; Dolichos biflorus; Glycine max; Arachis hypogaea and Canavalia ...
RESTANI, Cinzia, PEDERZOLI, Aurora
openaire   +3 more sources

Trichromatic color vision in the salamander (Salamandra salamandra)

Journal of Comparative Physiology A, 1995
Spectral sensitivity functions were measured between 334 nm and 683 nm in Salamandra salamandra by utilizing two behavioral reactions: the negative phototactic response, and the prey catching behavior elicited by a moving worm dummy. The action spectrum of the negative phototactic response revealed 3 pronounced maxima: at 360–400 nm, at 520–540 nm, and
C. Przyrembel, B. Keller, C. Neumeyer
openaire   +1 more source