Search results for "Population dynamic"
showing 6 items of 296 documents
Nuovi dati sull’espansione dell’occhione Burhinus oedicnemus in Sicilia. Una riflessione sulla citizen science
2023
New data on the expansion of the Eurasian Thick-knee Burhinus oedicnemus in Sicily. A consideration of citizen science.In this work, we collected records of Eurasian Thick-knee observa-tions in Sicily by using scientific literature, citizen science programs, and social networks as data sources. The aims of this work is creat-ing a complete and up-to-date dataset, which also includes the authors’ targeted research in the field. As compared with records previously reported in literature, the data collected here, which cover the last fif-teen years, show a clear expansion trend for the Eurasian Thick-kneein Sicily. About one third of these new records come from Facebook groups dedicated to bio…
AGGIORNAMENTO SULLA DISTRIBUZIONE DEL SUCCIACAPRE Caprimulgidae) IN SICILIA CAPRIMULGUS EUROPAEUS (Aves
2021
Caprimulgus europaeus In recent years Update on the distribution of breeding Nightjar in Sicily. there have been numerous observations of Nightjar in areas where it had never previously been observed. In some cases the reason may be a deeper exploration, but in other cases the possible explanation is the expansion of the species. However, it is quite interesting the change in the habitat by this species. The present paper provides an update of its status based on data collected in the fifteen years following the publication of the last Sicilian Atlas of breeding birds.
ESPANSIONE DELLA RONDINE MONTANA PTYONOPROGNE RUPESTRIS (SCOPOLI) IN SICILIA (Aves Hirundinidae)
2021
Expansion of the Eurasian Crag Martin Ptyonoprogne rupestris (Scopoli) in Sicily (Aves Hirun dinidae). Data collected during the last fifteen years on the distribution of the Eurasian Crag Martin in Sicily and the comparison with those recorded in literature show an expansion trend for this species. While in the newly colonized areas the nesting sites have been observed mainly on natural habitats, where its occurrence was previously recorded the species shows and adaptation to exploit also anthropogenic habitats, such as buildings or other infrastructures.
CHECK-LIST DEGLI UCCELLI DELLA R.N.O. “SALINE DI TRAPANI E PACECO” CON LISTA COMMENTATA DEI NON PASSERIFORMES
2018
Update of the checklist of the birds of the Nature Reserve “Saline di Trapani e Paceco” (Sicily). The present work provides an update to the checklist of birds of the “Saline di Trapani e Paceco” published nine years ago by IENTILE (2008). The overall number of bird species increased from 209 to the current value of 229. The present work also includes a quantitative estimate of the breeding and wintering species. A table, detailing the number of individuals of each species present for each month of the year at the Saline di Trapani and Paceco, is included. This work aims at underscoring the importance of the Saline as an Important Bird Area (IBA), as a key area for the migration pathways of…
Antennal lobe representations are optimized when olfactory stimuli are periodically structured to simulate natural wing beat effects
2014
Animals use behaviors to actively sample the environment across a broad spectrum of sensory domains. These behaviors discretize the sensory experience into unique spatiotemporal moments, minimize sensory adaptation, and enhance perception. In olfaction, behaviors such as sniffing, antennal flicking, and wing beating all act to periodically expose olfactory epithelium. In mammals, it is thought that sniffing enhances neural representations; however, the effects of insect wing beating on representations remain unknown. To determine how well the antennal lobe produces odor-dependent representations when wing beating effects are simulated, we used extracellular methods to record neural units an…
The Effect of Predator Population Dynamics on Batesian Mimicry Complexes.
2022
Understanding Batesian mimicry is a classic problem in evolutionary biology. In Batesian mimicry, a defended species (the model) is mimicked by an undefended species (the mimic). Prior theories have emphasized the role of predator behavior and learning as well as evolution in model-mimic complexes but have not examined the role of population dynamics in potentially governing the relative abundances and even persistence of model-mimic systems. Here, we examined the effect of the population dynamics of predators and alternative prey on the prevalence of warning-signaling prey composed of models and mimics. Using optimal foraging theory and signal detection theory, we found that the inclusion …