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Heterospecific foraging associations between reef‐associated sharks: first evidence of kleptoparasitism in sharks ArchiMer
Labourgade, Pierre; Ballesta, Laurent; Huveneers, Charlie; Papastamatiou, Yannis; Mourier, Johann.
Social foraging allows groups of predators to search for, pursue, and capture prey with greater efficiency than using solitary hunting. It can vary in complexity and take many forms ranging from cooperative hunting, to social information sharing and local enhancement (Lang and Farine 2017). Theoretical and empirical studies support the advantages of group foraging, although there will be trade‐offs between benefits, such as increased prey detection or capture success, and costs such as increased competition amongst group members (Gil et al. 2017).
Tipo: Text Palavras-chave: Carcharhinus amblyrhynchos; Foraging strategy; French Polynesia; Reef shark; Species interaction; Triaenodon obesus.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00632/74456/74272.pdf
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Let's go beyond taxonomy in diet description: testing a trait-based approach to prey-predator relationships ArchiMer
Spitz, Jerome; Ridoux, Vincent; Brind'Amour, Anik.
1. Understanding ‘Why a prey is a prey for a given predator?’ can be facilitated through trait-based approaches that identify linkages between prey and predator morphological and ecological characteristics and highlight key functions involved in prey selection. 2. Enhanced understanding of the functional relationships between predators and their prey is now essential to go beyond the traditional taxonomic framework of dietary studies and to improve our knowledge of ecosystem functioning for wildlife conservation and management. 3. We test the relevance of a three-matrix approach in foraging ecology among a marine mammal community in the northeast Atlantic to identify the key functional traits shaping prey selection processes regardless of the taxonomy...
Tipo: Text Palavras-chave: Foraging strategy; Fourth-corner method; Functional ecology; Marine mammals; Prey selection; RLQ analysis.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00189/30047/29495.pdf
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Polinizadores de Bertholletia excelsa (Lecythidales: Lecythidaceae): interações com abelhas sem ferrão (Apidae: Meliponini) e nicho trófico Neotropical Entomology
Santos,Charles F; Absy,Maria L.
This paper presents an analysis of the foraging behavior and interactions of Xylocopa frontalis Olivier (Apidae: Xylocopini) and Eulaema mocsaryi (Friese) (Apidae: Euglossini) in the presence of stingless bees (Apidae: Meliponini) in flowers of Bertholletia excelsa, the Brazilian nut. The palynological load carried by both species was also examined. This study was conducted in the farm Aruanã, Itacoatiara/ Amazonas state, Brazil, during the flowering peak of B. excelsa. The visitation by the main pollinators X. frontalis and E. mocsaryi were influenced by the presence and activities of stingless bees in the flowers of B. excelsa. Meliponini bees did not have any effect on the visits and collection of floral resources by X. frontalis, while negatively...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Foraging strategy; Interspecific relation; Pollen stealing; Central Amazonia; Brazil.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600002
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Spider community responds to litter complexity: insights from a small-scale experiment in an exotic pine stand Iheringia, Sér. Zool.
Podgaiski,Luciana R.; Rodrigues,Gilberto G..
ABSTRACT Conservation of biodiversity in agroecosystems is an urgent need, and a suitable approach to maximize animal biodiversity and their services is the restoration of habitat heterogeneity. Here we investigated the value of increasing litter complexity in tree plantations of exotic pine for ground spiders. We hypothesized that increasing the litter complexity of these systems, as it would be the case in ecologically designed plantations, would increase spider aggregations. We performed a small-scale litter manipulation experiment within an exotic pine stand in the municipality of Minas do Leão, Rio Grande do Sul, Brazil, and compared spider diversity in simple (only pine needles) and complex substrates (with the addition of diverse native...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Habitat complexity; Habitat selection; Species diversity; Foraging strategy.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100207
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