Feeding ecology of two newt species (Triturus cristatusandLissotriton vulgaris) during the reproduction season
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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 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 کاملSperm storage in females of the smooth newt (Triturus v. vulgaris L.): I. Ultrastructure of the spermathecae during the breeding season.
Sperm storage in cloacal spermathecae was studied in females of Triturus v. vulgaris collected early in the breeding season in southern England. Females collected in terrestrial situations, presumably unmated, were mated in the laboratory, and the ultrastructure of the transferred sperm and the spermathecae was observed at various intervals after mating. Sperm from a spermatophore cap lodged in...
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 کاملOne Species, Three Pleistocene Evolutionary Histories: Phylogeography of the Italian Crested Newt, Triturus carnifex
Phylogeographic patterns of temperate species from the Mediterranean peninsulas have been investigated intensively. Nevertheless, as more phylogeographies become available, either unique patterns or new lines of concordance continue to emerge, providing new insights on the evolution of regional biotas. Here, we investigated the phylogeography and evolutionary history of the Italian crested newt...
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ژورنال
عنوان ژورنال: Knowledge and Management of Aquatic Ecosystems
سال: 2013
ISSN: 1961-9502
DOI: 10.1051/kmae/2013040