Ontogenetic variation in the predatory behavior of the orb-weaver spider Azilia histrio: detecting changes in behavioral organization
| Autor: | Hilton Ferreira Japyassú, Luara Tourinho, André de Almeida Mendonça |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Multivariate analysis biology Ecology Ontogeny 05 social sciences Foraging biology.organism_classification 010603 evolutionary biology 01 natural sciences Predatory behavior Variation (linguistics) Orb-weaver spider Animal ecology Evolutionary biology Similarity (psychology) 0501 psychology and cognitive sciences Animal Science and Zoology 050102 behavioral science & comparative psychology Ecology Evolution Behavior and Systematics |
| Zdroj: | Journal of Ethology. 34:219-229 |
| ISSN: | 1439-5444 0289-0771 |
| Popis: | Spiders in different ontogenetic stages vary in their predatory behavior. The more advanced the development of an individual, the more similar is its behavior to that of the adult. Studies have shown that the behavior of subadult and adult spiders are similar, but the similarity may be superficial, since the analytical approach usually adopted cannot evaluate important features, such as the organization of the foraging system. Systems are characterized by a modular organization, which needs appropriate analytical approaches to be properly evaluated. We tested whether there is a difference between the predatory sequences of adult and subadult spiders (Azilia histrio) and identified the most appropriate methodological procedure for the characterization of this difference. We used multivariate analysis, contrasting an approach that focuses on frequency of behavioral categories, taken independently, with an approach that directly evaluates the sequential organization of behavioral categories, thus allowing the analysis of the structure of the foraging system. While the independent variables approach did not show differences between ontogenetic stages, the organizational analytical approach resulted in a number of important differences between the ontogenetic stages. We describe the foraging system for the first time in the genus Azilia, while discussing hypotheses for the observed organizational change. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|