Abstract Ability to identify familiar foods is a major driver of animal feeding behavior. Animals show preference for familiar foods over novel ones, presumably to avoid poisonous substances and better support their growth and reproduction. However, we do not know how their feeding behavior is affected when the familiar food is inferior to a novel food with regards to its palatability and nutritional properties. We tested the hypothesis that feeding preference is determined by specific food characteristics rather than food familiarity with fast-growing soil-dwelling nematodes. Two sequential experiments were designed to test the feeding behavior of soil bacterial-feeding nematodes (Mesorhabditis sp. and Acrobeloides sp.) resulting from familiar food recognition, including a 6-months training period to develop their food familiarity and a feeding experiment to test their food preference for five bacterial species. Nematodes showed clear preference for specific food sources, which were not necessarily the familiar food. Their feeding behavior was not affected by food familiarity, but correlated highly with bacterial traits such as cell size, growth rates, and water content. We conclude that nematode feeding behavior was controlled by food specificity rather than familiarity. We further suggest that physiological factors, possibly the physical size and presence of chemical receptors in the buccal cavity, allow nematodes to rapidly assess their food supply and switch from a familiar food to a preferred, novel food that is easier...
Food Familiarity Familiar Food Feeding Behavior Bacterial Traits Buccal Cavity Sequential Experiments Feeding Preference Nutritional Properties Specific Food Behavior Of Nematodes
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Introducing Weekly Round-ups!Beta
Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.
Climate change Research Articles published between Sep 19, 2022 to Sep 25, 2022
Sep 26, 2022
Articles Included: 5
Disaster Prevention and Management ISSN: 0965-3562 Article publication date: 20 September 2022 This paper applies the theory of cascading, interconnec...Read More
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