The influence of nutritional status on the feeding behaviour of the field slug, Deroceras reticulatum (Muller)

Article Abstract:

There is evidence that the field slug, Deroceras reticulatum, is able to detect necessary nutrients (carbohydrates and protein) in food. This ability is affected by the composition of the slugs' haemolymph. Research using artificial diets in which protein and carbohydrate composition could be altered and non-nutritional chemicals added as flavours revealed that slugs have no general inclination for neophilia based on slugs alone. Neophilia in slugs seems to be the outcome of the development of specific appetites for nutrients after a suboptimal diet.

Food and nutrition, Slugs (Mollusks)

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Social facilitation acts more on the appetitive than the consummatory phase of feeding behavior in domestic fowl

Article Abstract:

A social facilitation study among chicken (Gallus gallus domesticus) shows that feeding behavior is facilitated by the sight and sound of other chicken feeding. The social facilitation is more in the appetitive than in the consummatory phase of feeding behavior. In social facilitation condition satiated birds peck as often as in food-deprived condition, but consume less food. The difference between the number of pecks and the amount of food consumed indicates the social facilitation effect on feeding behavior.

Models, Analysis, Behavior, Animal behavior, Animal feeding and feeds, Social facilitation, Chicken breeds

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Behaviour plasticity without learning: phenotypic and genetic variation of naive Daphnia in an ecological trade-off

Article Abstract:

Plastic phenotypic responses prompt a similar opportunity for selection in Daphnia geleata and the Daphia geleata-Daphnia rosea hybrid. However, their responses to selection would be different in the trade-off and in related environments.

Adaptation (Physiology), Physiological adaptation, Phenotype, Phenotypes

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