Snail-snacking snakes

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Asymmetry of mandibular dentition is associated with dietary specialization in snail-eating snakes

BACKGROUND In vertebrates, the left-and-right pairs of homologous organs are generally present in equal numbers. A remarkable exception is snail-eating snakes in the family Pareidae: almost all the pareid snakes have much more teeth on the right mandible than on the left for functional specialization in feeding on the dextral majority of land snails. Because the only exceptional species with sy...

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Snacking is prevalent in Mexico.

BACKGROUND Snacking has increased globally, but little is known about how Mexicans consume foods outside meals. OBJECTIVE The aim of this study was to examine the prevalence and patterns of snacking behavior among Mexicans. METHODS We used data from children and adults (aged ≥ 2 y; n = 9937) from the Mexican National Nutrition Survey 1999 and the Mexican National Health and Nutrition Survey...

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Visualising future behaviour: Effects for snacking on biscuit bars, but no effects for snacking on fruit.

In this study, participants (N = 223) were randomised to visualise snacking on fruit, visualise snacking on biscuit bars or no visualisation, and intentions and attitudes towards fruit and biscuit bars, immediate selection of fruit or biscuit bars and subsequent consumption were measured. No effects of visualising snacking on fruit were found once background variables were taken into account. V...

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ژورنال

عنوان ژورنال: Science

سال: 2018

ISSN: 0036-8075,1095-9203

DOI: 10.1126/science.360.6396.1417-c