Multilocus structure of the smooth newt (Triturus vulgaris, Caudata) natural populations
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چکیده
منابع مشابه
The Life of the Smooth Newt (Triturus vulgaris) after Metamorphosis
After metamorphosis. smooth or common newts (Tritltrus vulgtzris vltlgaris [Linn]) disperse on land. where they live a s juveniles before returning to the water as breeding adults. The population age-structure was obtained by dissecting the standard length frequency distribution. a procedure which is justified in the text. Juveniles have an uncomplicated age-structure, the nurnber of individual...
متن کاملA radioautographic study of the time course of male meiosis in the newt Triturus vulgaris.
In male Triturus vtdgaris at 16 °C the pre-meiotic synthesis of DNA (5-phase) takes 0-10 days. The 5-phase starts 1-2 days after completion of the ultimate spermatogonial mitosis, and extends into leptotene. Heterochromatic regions, most of which lie close to the centromeres, start and finish replicating about 1 day later than other parts of the chromosomes. Synapsis starts 6 days after the end...
متن کاملComparison of active and passive sampling methods for detecting and monitoring the smooth newt (Lissotriton vulgaris) and the endangered northern crested newt (Triturus cristatus)
Amphibian populations are declining at an alarming pace in many parts of the world due to both global and local factors (Blaustein and Wake, 1995; Stuart et al., 2004; Beebee and Griffiths, 2005). Northern crested newt (Triturus cristatus) populations are declining in many European countries (Edgar and Bird, 2006; Denoël, 2012), while smooth newts (Lissotriton vulgaris) are still widespread and...
متن کاملQualitative changes in DNA indicating differential DNA replication during early embryogenesis of the newt Triturus vulgaris.
During gastrulation of the newt Triturus vulgaris considerable changes in the melting behaviour and in the CsCl density gradient pattern of DNA occur. The melting curves of DNAs from mid to late gastrulae (stages 11b-12c) deviate from the regular shape. Whereas the Tm values are identical in the stages 11a (early gastrula) and 15 (early neurula), and correspond to the standard DNA (stage 36 = t...
متن کاملMultilocus Structure of Natural Populations of HORDEUM SPONTANEUM.
The association of alleles among different loci was studied in natural populations of Hordeum spontaneum, the evolutionary progenitor of cultivated barley. The variance of the number of heterozygous loci in two randomly chosen gametes affords a useful measure of such association. The behavior of this statistic in several particular models is described. Generally, linkage (gametic phase) disequi...
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ژورنال
عنوان ژورنال: Genetics Selection Evolution
سال: 1992
ISSN: 1297-9686
DOI: 10.1186/1297-9686-24-5-385