female squash bee (IMAGE) Penn State Caption A female squash bee collects pollen on a squash flower in Loganton, Pennsylvania. Researchers found that variation in squash bees' heat tolerance was influenced by size, sex and infection status of the bees. Credit Laura Jones Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.