Behavioral flexibility in prey selection by bacterivorous nanoflagellates
نویسندگان
چکیده
منابع مشابه
The Physical Basis of Prey Capture by Heterotropidc Marine Nanoflagellates
Heterotrophic nanoflagellates play an important role in marine microbial processes as the principal consumers of, and a control point for, heterotrophic and photosynthetic bacterial production. Nanoflagellates are generally smooth spherical cells that capture picoplankton prey by chance contact with their cell surface as they swim randomly through the fluid medium. This mode of feeding is relat...
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We studied the role of bacterial secondary metabolites in the context of grazing protection against protozoans. A model system was used to examine the impact of violacein-producing bacteria on feeding rates, growth, and survival of three common bacterivorous nanoflagellates. Freshwater isolates of Janthinobacterium lividum and Chromobacterium violaceum produced the purple pigment violacein and ...
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We investigated the effect of diel variation in cell properties of picoplankton prey and the intrinsic grazing rhythm of heterotrophic nanoflagellates (HNF) on the diel periodicity of HNF grazing. To achieve this aim, 2-point dilution experiments with short incubation time were performed over 24 h in the South China Sea and Hong Kong (HK) coastal water to assess the prey cell properties and HNF...
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Flexible time budgets allow individual animals to buffer the effects of variable food availability by allocating more time to foraging when food density decreases. This trait should be especially important for marine predators that forage on patchy and ephemeral food resources. We examined flexible time allocation by a long-lived marine predator, the Common Murre (Uria aalge), using data collec...
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Predators often display dietary shifts in response to fluctuating prey in cyclic systems, but little is known about predator diets in systems that experience non-cyclic prey irruptions. We tracked dietary shifts by feral cats (Felis catus), red foxes (Vulpes vulpes) and dingoes (Canis dingo) through a non-cyclic irruption of small mammalian prey in the Simpson Desert, central Australia. We pred...
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ژورنال
عنوان ژورنال: Limnology and Oceanography
سال: 1995
ISSN: 0024-3590
DOI: 10.4319/lo.1995.40.8.1503