Jump to Main Content
- McNamara, Kathryn B.; Elgar, Mark A.; Jones, Therésa M.
- Ethology 2010 v.116 no.1 pp. 39-46
- Cadra cautella; adults; females; larvae; larval development; life history; longevity; males; paternity; population size; risk; sperm competition; spermatozoa
- ... Juvenile population size may affect the potential for future mating opportunities and therefore potentially sperm competition; this may favour ontogenetic adjustments in sperm production. Theory predicts that males should optimize their ejaculatory investment in accordance with the risk of sperm competition. Evidence for these theories is typically revealed in males of highly polyandrous species. ...
- Gall, Brian G.; Mathis, Alicia
- Ethology 2010 v.116 no.1 pp. 47-58
- Cottus; Micropterus dolomieu; Micropterus salmoides; Oncorhynchus mykiss; Salmo trutta; Sander vitreus; aquatic habitat; indigenous species; larvae; predation; predators; salamanders and newts; trout
- ... Innate predator recognition typically only occurs when there is an evolutionary history between predator and prey. Predator introductions thus can pose a substantial threat to native fauna that rely heavily on inherent identification of predators. In permanent aquatic habitats prey often encounter a variety of predatory and non-predatory fish species, and the ability to distinguish between the two ...