Temporal And Social Aspects of the Foraging Ecology of a Piscivore, the Osprey (Pandion Haliaetus)
Temporal And Social Aspects of the Foraging Ecology of a Piscivore, the Osprey (Pandion Haliaetus)
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Temporal lags in change of preference such as the one exhibited by this population of ospreys are likely in predators foraging in variable environments, and may be due to delay in the recognition by the predator that previously ignored prey types now constitute profitable food. This recognition may require the formation of new search images 42 that increase the predator's ability to recognize and capture different prey types (Mueller 1971, Pietrewicz and Kami! 1979, McNair 1981).
Consequently, ...predators may continue to capture less profitable prey types until a new search image is formed. Similarly, the time required to develop a new search image could explain why ospreys did not immediately respond to increases in the abundance of sunfish. Instead, change in preference was gradual. Thus, rather than the abrupt shift in preference predicted by some foraging models (e.g., "two-armed bandit" model, Krebs et al . 1978, see also Hughes 1979), change in preference could occur gradually. Lag in preference could simply reflect the time required to develop a new set of search images appropriate for a different resource base.
What to read after Temporal And Social Aspects of the Foraging Ecology of a Piscivore, the Osprey (Pandion Haliaetus)?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Edwards to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Temporal lags in change of preference such as the one exhibited by this population of ospreys are likely in predators foraging in variable environments, and may be due to delay in the recognition by the predator that previously ignored prey types now constitute profitable food. This recognition may require the formation of new search images 42 that increase the predator's ability to recognize and capture different prey types (Mueller 1971, Pietrewicz and Kami! 1979, McNair 1981).
Consequently, ...predators may continue to capture less profitable prey types until a new search image is formed. Similarly, the time required to develop a new search image could explain why ospreys did not immediately respond to increases in the abundance of sunfish. Instead, change in preference was gradual. Thus, rather than the abrupt shift in preference predicted by some foraging models (e.g., "two-armed bandit" model, Krebs et al . 1978, see also Hughes 1979), change in preference could occur gradually. Lag in preference could simply reflect the time required to develop a new set of search images appropriate for a different resource base.
What to read after Temporal And Social Aspects of the Foraging Ecology of a Piscivore, the Osprey (Pandion Haliaetus)?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Edwards to read onlineMoreLess
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