Trophic differentiation between the endemic Cypriot mouse and the house mouse: a study coupling stable isotopes and morphometrics
Authors: Renaud, S., Hardouin, E., Hadjisterkotis, E., Mitsainas, G.P., Bergmann, M., François, E., Fourel, F. and Simon, L.
Journal: Journal of Mammalian Evolution
Publisher: Springer Nature
eISSN: 1573-7055
ISSN: 1064-7554
Abstract:Two cryptic species of mice coexist on Cyprus: the introduced house mouse and the endemic Cypriot mouse, which remained unnoticed until the beginning of the 21st century. Their trophic positions were investigated using isotopic ecology. The shape and biomechanics of the mandible provided a complementary insight into their respective diets. The Cypriot mouse exhibits generalist habits relying on various natural food resources, including invertebrates, while the house mouse exploits a broad spectrum of anthropic food resources. The Cypriot mouse has a large mandible optimized for chewing at the molars that facilitates consumption of large and hard food items presumably abundant in the natural vegeta tion of Cyprus. The small mandible size of the house mouse is compensated by a large masseter area and an optimization for incisor biting, making it an all-around tool for foraging on diverse non-natural items. This fine-tuning of generalist feeding behavior ensures efficient niche partitioning between the two species on Cyprus
Source: Manual