Sex ratio determinants in Indian populations: Studies at national, state and district levels 来自 ResearchGate 喜欢 0 阅读量: 96 作者:AH Bittles,WM Mason,DN Singarayer,S Shreeniwas,M Spinar 摘要: Although the human sex ratio at conception, i.e. the primary sex ratio, is not readily ...
One hundred and thirty carcasses of the red fox were collected in Tochigi Prefecture, by the Tochigi Prefectural Museum, from 1981 to 1991. The young/adult ratio of the sample was 1.60, which suggests that the hunting pressure has been relatively low in this area. Six percent of the animals...
At the monastery of Farfa in central Italy, a survey made some time between 789 and 822 showed that the ratio between the sexes in adulthood was 112 men per 100 women [11, 12]. If these samples can be taken as typical—and I think they can—then it is possible to agree with David...
Sex ratio, weight, fecundity, fertility and longevity of codling moth, Cydia pomonella (L.) wild adults from wild populations of Southern part of Syria wer... M Mansour - 《Polskie Pismo Entomologiczne/polish Journal of Entomology》 被引量: 15发表: 2007年 HEAVY METAL AND SELENIUM CONCENTRATION...
intraejaculate bias, sperm use, cryptic female choice, sex ratio manipulation, sire age, offspring fitnessModification of offspring sex ratios in response to... TAF Long,A Pischedda - 《Proceedings of the Royal Society B Biological Sciences》 被引量: 0发表: 2005年 Serologic Evidence of Severe ...
Methods and key assumptions: A dynamic state variable model. We develop a 'hybrid' model that examines mothers' allocation decisions to offspring by considering mature egg and nest state as well as other environmental/ecological factors. We assume that mothers alter reproductive decisions based on ...
The human sex ratio from conception to birth These biases are associated with the abnormal/normal state of the sex chromosomes and of chromosomes 15 and 17. The sex ratio may decrease in the first... O Steven Hecht,S J William,VR Akmaev,... 被引量: 0发表: 2021年 AGO4 regulates entry...
For dioecious species the problem of interest is the evolution of the sex ratio; for a simultaneously hermaphroditic species, it is the allocation to sperm versus eggs in each breeding season2-5; for a sequential or sex-reversing hermaphrodite, the questions are the sex order (male or female...
Both overall and adult sex ratio (female:male) was male biased and differed significantly from parity. The mean SVL of adult males (98.3 ± 21.3 cm) was significantly greater than that of adult females (87.3 ± 15.9 cm). A compressed sexual size dimorphism index (SDI) of 2.12 was ...
Under dry environmental conditions the sex ratio of many dioecious plants is male-biased, which is usually explained by the higher susceptibility of females to drought stress. We investigated if spatio-temporal variation in the sex ratio of Silene otites could be explained by the higher sensitivity...