Adjustments in the time, distance and direction of foraging in dinoponera quadriceps workers
We measured individual decisions regarding the adjustments of time, distance and direction of foraging in Dinoponera quadriceps.We observed two colonies in an area of secondary Atlantic Forest, FLONA-ICMBio, in Northeastern Brazil. The workers were individually marked. We recorded the displacemen...
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| Principais autores: | , , |
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| Formato: | article |
| Idioma: | eng |
| Publicado em: |
Springer
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| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/24668 |
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| Resumo: | We measured individual decisions regarding the adjustments of time, distance
and direction of foraging in Dinoponera quadriceps.We observed two colonies in
an area of secondary Atlantic Forest, FLONA-ICMBio, in Northeastern Brazil. The
workers were individually marked. We recorded the displacement of workers, their
returns to the nest with and without food, the time spent searching for food, maximum
and total distance, inter-trip latency and direction of trips. The time spent searching for
food, maximum distance and transport velocity did not vary with food size. The
previous trip success reduced the latency between foraging trips and increased the
percentage of success on the next trip. However, this previous success did not demonstrate
a significant variation relative to the time spent searching on the next trip or
direction of search. The workers maintained an individual directional fidelity during
foraging. The adjustments of these foraging variables under individual control contributed
to the efficiency at the colony level. D. quadriceps is compatible with the central
place theory and risk sensitivity model of behavior |
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