ヘッダー画像

タグ「Reproductive ability」

Radiation effects on the reproductive system of teleost fish – the consequences of the Chernobyl disaster

Title: Radiation effects on the reproductive system of teleost fish – the consequences of the Chernobyl disaster

Author: Belova, Natalia Vasilyevna

Reference: Moscow, 2008

Keywords: ichthyology, reproductive system, teleost fish, radiation factor, cesium-137, strontium-90, water reservoirs

Abstract: Research purpose; to give a comprehensive assessment of the radiation factor impact (137Cs and 90Sr contamination) after the Chernobyl disaster on the reproductive system and reproductive ability of some species of teleost fish in reservoirs of various types.

URL:http://www.dissercat.com/content/radiatsionnoe-vozdeistvie-na-vosproizvoditelnuyu-sistemu-kostistykh-ryb-posledstviya-cherno-0

Growth, reproductive success and reproductive prospects of English oak in the contaminated plantations areas of Bryansk region, in the areas of broadleaf forests

Title: Growth, reproductive success and reproductive prospects of (English) oak in the contaminated plantations areas of Bryansk region, in the areas of broadleaf forests

Author: Shlapakova, Svetlana Nikolayevna

Reference: Bryansk, 1999

Keywords: English oak, Bryansk district, reproductive ability

Abstract: The aim of the research; to learn the nature of the variability of growth and generative processes in English oak at different stages of ontogeny in Bryansk district, a zone of broadleaf forests under the influence of radioactive contamination for reforestation measures using its own forest seed base.

URL:http://www.dissercat.com/content/rost-reproduktivnaya-sposobnost-i-perspektivy-vosproizvodstva-duba-chereshchatogo-v-radioakt

Effects of radioactive contamination on Scots pines in the remote period after the Chernobyl accident

Title: Effects of radioactive contamination on Scots pines in the remote period after the Chernobyl accident

Author: Geras’kin, Stanislav / Oudalova, Alla / Dikareva, Nina / Spiridonov, Sergey / Hinton, Thomas / Chernonog, Elena / Garnier-Laplace, Jacqueline

Reference: Ecotoxicology, 20 (6), p.1195-1208, Aug 2011 DOI: 10.1007/s10646-011-0664-7

Keywords: Chernobyl accident, Radioactive contamination, Scots pine, Absorbed doses, Cytogenetic effects, Reproductive ability, Radio-adaptation

Abstract: A 6 year study of Scots pine populations inhabiting sites in the Bryansk region of Russia radioactively contaminated as a result of the Chernobyl accident is presented. In six study sites, 137Cs activity concentrations and heavy metal content in soils, as well as 137Cs, 90Sr and heavy metal concentrations in cones were measured. Doses absorbed in reproduction organs of pine trees were calculated using a dosimetric model. The maximum annual dose absorbed at the most contaminated site was about 130 mGy. Occurrence of aberrant cells scored in the root meristem of germinated seeds collected from pine trees growing on radioactively contaminated territories for over 20 years significantly exceeded the reference levels during all 6 years of the study. The data suggest that cytogenetic effects occur in Scots pine populations due to the radioactive contamination. However, no consistent differences in reproductive ability were detected between the impacted and reference populations as measured by the frequency of abortive seeds. Even though the Scots pine populations have occupied radioactively contaminated territories for two decades, there were no clear indications of adaptation to the radiation, when measured by the number of aberrant cells in root meristems of seeds exposed to an additional acute dose of radiation.

URL: http://link.springer.com/article/10.1007%2Fs10646-011-0664-7

▲ページの先頭へ戻る