However, this is the first study that shows variation in skin coloration has a genetic basis and can help predict reproductive output. (sciencedaily.com)
An experimental study with size - selectively harvested zebrafish that began in 2006 at the Leibniz - Institute of Freshwater Ecology and Inland Fisheries in Berlin, Germany reveals that size - selective harvesting causes changes in key life - history traits, leading to low maximum body size and poor reproductive output. (sciencedaily.com)
Even the mere presence of cats in the environment has been shown to reduce bird reproductive output and survivorship. (abcbirds.org)