Winterkill lakes often have a characteristic fish community, presumably composed of species able to survive winter hypoxia. Our research on a small winterkill lake in northern Wisconsin indicates that fishes common in winterkill lakes have behavioral adaptations for tolerating or avoiding winter hypoxia...
Bristlecone pines are one of the world's oldest living organisms. The gnarled, reddish brown trees found high in mountain tundras can grow to more than 4,000 years old because of adaptations. The tree developed an adaptation allowing it to conserve moisture, grow slowly, and begin growth each...
Within the species Astyanax mexicanus, there are several inter-fertile populations of river-dwelling sighted fish and cave-dwelling blind fish which have evolved morphological and behavioral adaptations. We have recently reported a developmental and neurophysiological basis for the loss of aggressive behavio...
The movements animals make are behavioral adaptations. Bats are nocturnal animals, so flying is very tiring for them during the day. It is easier for them to fly at night when it is cooler. Raccoons like to come out only at night, too, and are not seen very often. There are less pred...
The giant squid is among the least seen and studied creatures of the sea. No live giant squid was seen in until 2006. The giant squid, which can get as big as 70 feet long, is attached to many myths. In truth, giant squid adaptations arose to allow it to
genome. We review the current knowledge of the genetic basis of POLS traits and suggest candidate genes and pathways for future studies. Pleiotropic effects may govern many of the genetic correlations, but little is still known about the mechanisms involved in trade-offs between current and future...
Consequently, these species have become models for studying the evolution of animal adaptations to extreme environments (Riddle et al., 2018; Yoshizawa, 2015), as well as ideal models to study environmental influences on the stress response of organisms. In a given environment, stressors and ...
Declining Arctic sea ice is increasing polar bear land use. Polar bears on land are thought to minimize activity to conserve energy. Here, we measure the daily energy expenditure (DEE), diet, behavior, movement, and body composition changes of 20 differe
(i.e., the competition between the ejaculates of different males for fertilization of a given set of ova) was suggested to contribute to sexual selection (Parker 1970) and to drive the evolution of numerous physiological, behavioral or morphological adaptations in males and females (Wigby and ...
The extreme transparency of leptocephali and use of shape-change behaviors or expandable chromatophores along with their gut swellings or external appendages may be adaptations for reducing predation rates through Batesian mimicry of gelatinous zooplankton. Many questions remain about their behavior and...