scholarly journals Estudio de las conductas y patrones de orientación de dos especies de urodelos ibéricos (Lissotriton boscai y Triturus marmoratus) en relación con sus estrategias vitales

2009 ◽  
Author(s):  
Lorenzo Rodríguez García
Keyword(s):  
Triturus Marmoratus

Chromosome location of the genes for 28S, 18S and 5S ribosomal RNA in Triturus marmoratus (Amphibia Urodela)

Chromosoma ◽  
1974 ◽  
Vol 49 (2) ◽  
pp. 135-153 ◽  
Author(s):  
Giuseppina Barsacchi Pilone ◽  
Irma Nardi ◽  
Renata Batistoni ◽  
Francesca Andronico ◽  
Elena Beccari
Keyword(s):  
Ribosomal Rna ◽  
Chromosome Location ◽  
5S Ribosomal Rna ◽  
Triturus Marmoratus

scholarly journals Distribution of herpetofauna in caves of Portuguese karst massifs

2018 ◽  
Vol 1 ◽  
Author(s):  
Ana Marques ◽  
Joana Soares ◽  
Fernando Gonçalves ◽  
Sérgio Marques ◽  
Ana Sofia P. S. Reboleira
Keyword(s):  
Bufo Bufo ◽  
Karst Region ◽  
Preliminary Survey ◽  
Potential Habitat ◽  
Salamandra Salamandra ◽  
Triturus Marmoratus ◽  
Lack Of Knowledge

Amphibians are frequently found exploring subterranean environments. Even though in Europe there are already some reports of amphibians present in subterranean habitats, in Portugal there is a major lack of knowledge of these ecosystems, namely in the karst region. Considering the relevance of amphibians and their current conservational status, it is important to assess their presence in every potential habitat. In order to provide further knowledge over this subject a preliminary survey was carried out in two Portuguese karst massifs, Estremenho and Sicó. A total of 24 caves were surveyed and as result three species (Tarentola mauritanica; Salamandra salamandra and Pleorodeles waltl) were found in Estremenho karst massif, and two species (Triturus marmoratus and Bufo bufo) were observed in Sicó karst massif. Furthermore, evidences were found that P. waltl uses caves for reproduction, which had only been reported once in Spain. This allowed perceiving that herpetofauna species occupy caves of Portuguese karst massifs and are also using them as reproduction sites.

Effect of photoperiod on testicular function in blinded and non-blinded marbled newts,Triturus marmoratus (caudata, salamandridae)

1989 ◽  
Vol 200 (2) ◽  
pp. 151-162 ◽  
Author(s):  
Benito Fraile ◽  
Ricardo Paniagua ◽  
Marina C. Rodriguez ◽  
Francisco Jos� Saez
Keyword(s):  
Testicular Function ◽  
Triturus Marmoratus

Histological and quantitative changes in the annual testicular cycle of Triturus marmoratus marmoratus

1990 ◽  
Vol 68 (1) ◽  
pp. 63-72 ◽  
Author(s):  
Francisco Jose Saez ◽  
Benito Fraile ◽  
Ricardo Paniagua
Keyword(s):  
Endoplasmic Reticulum ◽  
Germ Cell ◽  
Germ Cells ◽  
Primordial Germ Cells ◽  
Light And Electron Microscopy ◽  
Second Phase ◽  
Glandular Tissue ◽  
Quantitative Studies ◽  
Quantitative Changes ◽  
Triturus Marmoratus

Eight male marbled newts (Triturus marmoratus marmoratus) were collected on the 15th of each month in 1987 and their testes were studied by light and electron microscopy. Quantitative studies also were performed to establish the annual testicular cycle and the total volume per testis occupied by each germ cell type throughout the year. Characteristic ultrastructural features of germ cells are the occurrence of a well-developed Golgi complex in primary spermatogonia; multiple small dictyosomes and nuclear blebs in primary spermatocytes; peripherally situated mitochondria; long strands of endoplasmic reticulum and subsurface cisternae in round spermatids; and abundant rough endoplasmic reticulum in follicular cells. Secondary spermatocytes have a short or absent interphase and are observed in the prophase. The annual testicular cycle comprises three periods: (i) germ cell proliferation (May–June), characterized by the formation of primary spermatocytes that undergo meiosis, giving rise to round spermatids; (ii) spermiogenesis (July–September), during which round spermatids develop into spermatozoa and the interstitial boundary cells are transformed into glandular tissue cells; and (iii) testicular quiescence (October–April) in which the testis contains only spermatozoa, glandular tissue, and a few primordial germ cells and spermatogonia. In the second phase of testicular quiescence (February–April) spermatozoa are released from the testis and proliferation of secondary spermatogonia occurs.

scholarly journals Morphological characterization, cytogenetic analysis, and geographical distribution of the Pygmy Marbled Newt Triturus marmoratus pygmaeus (Wolterstorff, 1905) (Caudata: Salamandridae)

1993 ◽  
Vol 63 (1) ◽  
pp. 3-14 ◽  
Author(s):  
M. García-París ◽  
P. Herrero ◽  
C. Martín ◽  
J. Dorda ◽  
M. Esteban ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Accurate Determination ◽  
Morphological Characterization ◽  
Diagnostic Features ◽  
Central System ◽  
Northern Half ◽  
Serra Da Estrela ◽  
Triturus Marmoratus ◽  
Cytogenetical Analysis

Triturus marmoratus pygmaeus, a problematicsubspecies of the Marbled Newt from the southern part of the Iberian Peninsula, is redescribed using specimens collected in the “typical” area. Diagnostic external morphological features are provided to permit the accurate determination of the specimens belonging either to T. m. marmoratus or to T. m. pygmaeus. These diagnostic features were applied to individuals both from the field and from museum collections. The results indicate a larger distributional area for to T. m. pygmaeusto than was previously recognized. The distribution of to T. m. marmoratusto ranges over the northern half of the Iberian Peninsula and most of France; to T. m. pygmaeusto occupies the southwestern part of the Iberian Peninsula. The contact area between the two subspecies seemsto be located alongthe Central Range Mountains (Sistema Central) in Portugal and Spain. to T. m. marmoratusto extends southwards beyond this borderline in three areas: Serra da Estrela (Portugal), Sierra de Gata (Spain) and Sierra de Guadarrama (Spain). The only point at which to T. m. pygmaeusto reaches northwards beyond the Central System is near Puerto de Malagón (Madrid Province, Spain). No cases of strict sympatry, nor individuals with intermediate morphologicalfeatures have been observed. The results of an extensive cytogenetical analysis do not show any differences between to T. m. pygmaeusto and to T. m. marmoratusto . Interestingly, however, the to T. m. pygmaeusto populations from Doñana (Huelva Province, Spain) showed an exclusive, though little differentiated, C-banding pattern.

Characterization of the lampbrush chromosomes of the marbled newt Triturus marmoratus (Latreille, 1800)

Chromosoma ◽  
1972 ◽  
Vol 37 (1) ◽  
pp. 1-22 ◽  
Author(s):  
Irma Nardi ◽  
Matilde Ragghianti ◽  
Giorgio Mancino
Keyword(s):  
Lampbrush Chromosomes ◽  
Triturus Marmoratus
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