Circannual Patterns of Male Production in the Absence of Environmental Cues in Daphnia magna
Additional Funding Sources
This project is supported by a 2019-2020 STEM Undergraduate Research Grant from the Higher Education Research Council. The project described was supported by the CAREER Award from the National Science Foundation. The project described was supported by the Reed College Betty C. Liu Fellowship. The project described was supported by the Institutional Development Award from the National Institute of General Medical Sciences of the National Institutes of Health.
Abstract
Sex determination occurs due to environmental and genetic factors. In Daphnia magna, sex determination has historically been thought to occur through environmental cues. We tested for the presence of genetic mechanisms of sex determination in D. magna by rearing clonal lineages in constant environmental conditions for one year. Our results suggest that sex determination in D. magna varies across the year, and is under some form of genetic control that may reflect an evolutionary transition from environmental sex determination to genetic sex determination.
Circannual Patterns of Male Production in the Absence of Environmental Cues in Daphnia magna
Sex determination occurs due to environmental and genetic factors. In Daphnia magna, sex determination has historically been thought to occur through environmental cues. We tested for the presence of genetic mechanisms of sex determination in D. magna by rearing clonal lineages in constant environmental conditions for one year. Our results suggest that sex determination in D. magna varies across the year, and is under some form of genetic control that may reflect an evolutionary transition from environmental sex determination to genetic sex determination.