title: Interpopulation variability urinal male sperm of the moor frog (Rana arvalis Nilsson, 1842)
metadata.name: dc.contributor.author
metadata.value: Baitimirova, Ekaterina A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Melnikova, Tatiana A.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2016-12-07T15:45:41Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2016-12-07T15:45:41Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2016-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Baitimirova E. A., Melnikova T. A. Interpopulation variability urinal male sperm of the moor frog (Rana arvalis Nilsson, 1842). Vestnik of Saint Petersburg University. Series 3. Biology, 2016, issue 3, pp. 20– 24.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: 10.21638/11701/spbu03.2016.304
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/5735
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: We assessed the concentration and motility of spermatozoa in native urinal sperm samples of the moor frog. Males (57 ind.) were caught in spring in three water pools different of hydrochemical composition. Samples of the urinal sperm were obtained after hormonal stimulation of animals by synthetic analogues of GRH (Surfagon). Sperm concentration was higher in amphibians from reservoirs with a background mineralization than that in other localities. The maximum marked value was 110 million per ml. It is worth noting that in this locality we observed the minimal number of motile spermatozoa in males. More than 95 % of spermatozoa in the samples studied showed motility only in situ. We very rarely observed progressive motility of spermatozoa. It is suggested that the fact is probably due to the magnitude of the osmotic pressure of the urine of animals, and can also be a consequence of parasitic infestation in male amphibians. Refs 2. Figs 2. Tables 1.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта
  № 14-0431097, руководитель — Е. А. Байтимирова.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Series 3. Biology;Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: amphibians
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: moor frog
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: reproduction
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: spermatozoa
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: urinal sperm
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: hormonal stimulation
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: hydrochemistry
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: mineralization
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Interpopulation variability urinal male sperm of the moor frog (Rana arvalis Nilsson, 1842)
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 05-Baytimirova.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/5735/1/05-Baytimirova.pdf
resources.format: Adobe PDF
resources.size: 167,6 kB