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61 results for “feeding interactions”
FIGURES 39–44. T. lomalarga-ants interactions. Scale 2 in Natural history of the mistletoe-feeding Thereus lomalarga (Lepidoptera, Lycaenidae, Eumaeini) in Colombia
FIGURES 39–44. T. lomalarga-ants interactions. Scale 2mm; arrow points to DNO. 39. 4 th instar with Camponotus. 40. Idem, with Pheidole. 41. Idem, with Wasmannia. 42. Secretion droplet. 43. Crematogaster ants tending both early 3 rd instar of Th. lomalarga brown morph and scale insects. Larva of T. lomalarga is close to a stem at the base of the inflorescence; arrows point to larva and Coccidae. 44. 4 th instar with Crematogaster.
Fig. 1 in Larval Feeding Behavior of Gratiana spadicea (Klug) (Coleoptera: Chrysomelidae: Cassidinae) on its Host Plant, Solanum sisymbriifolium Lamarck (Solanaceae): Interaction with Trichomes
Fig. 1. Scanning electron micrographs of leaf discs of Solanum sisymbriifolium used in feeding choice trials. a) High density stellate trichomes (HD) ¼ 29.7/mm2; b) low density stellate trichomes (LD) ¼ 1.07/mm2; c) submitted to mechanical removal of stellate trichomes (Bars ¼ 100 µm).
Fig. 4 in Larval Feeding Behavior of Gratiana spadicea (Klug) (Coleoptera: Chrysomelidae: Cassidinae) on its Host Plant, Solanum sisymbriifolium Lamarck (Solanaceae): Interaction with Trichomes
Fig. 4. Survivorship curves of Gratiana spadicea larvae fed with intact Solanum sisymbriifolium leaf discs and with leaf discs submitted to mechanical and chemical removal of the trichomes and their exudates, and to trichomes mechanical control. Treatments followed by the same letters do not differ significantly (log rank tests, Oi ¼ 0.05).
Fig. 3 in Larval Feeding Behavior of Gratiana spadicea (Klug) (Coleoptera: Chrysomelidae: Cassidinae) on its Host Plant, Solanum sisymbriifolium Lamarck (Solanaceae): Interaction with Trichomes
Fig. 3. Leaf damage of Gratiana spadicea on Solanum sisymbriifolium leaf. a) Feeding site cleared by a first instar larva; b) detail (enlargement of the area marked in a) of a corresponding macerated lateral ray (arrow). (Bars ¼ 100 µm and 50 µm, respectively).
FIGURES 41–48. Interactions between Mesosemia cippus immatures and their natural enemies. 41–42 in Immature stages of the Rubiaceae-feeding metalmark butterflies (Lepidoptera: Riodinidae), and a new function for the tentacle nectary organs
FIGURES 41–48. Interactions between Mesosemia cippus immatures and their natural enemies. 41–42, Telenomus sp. (Hymenoptera: Platygastridae) microparasitoid wasps parasitizing (41) and emerging from eggs (42); 43–44, parasitoid cocoon of Hyposoter sp. (Hymenoptera: Ichneumonidae) under fourth instar host remains (43) and adult of Hyposoter sp. (44); 45, adult of Brachymeria sp. (Hymenoptera: Chalcididae); 46, third instar being attacked by a ceratopogonid biting midge (arrow); 47, nymph of a chrysopid (Neuroptera) preying on third instar (arrow); 48, simulated encounter between larva and Camponotus punctulatus ants in the laboratory, note the TNOs everted (arrow).
Short-term Effects of Paced Bottle-Feeding on Feeding Interactions
ClinicalTrials.gov study NCT05780944. IPD Sharing: NO. Countries: 1. Publications: 0.
Mother-Child Interactions During Feeding
ClinicalTrials.gov study NCT05664529. IPD Sharing: NO. Countries: 1. Publications: 5.
Interactive Guidance Therapy With Video Feed-back of Parent and Child With Autism Spectrum Disorder
ClinicalTrials.gov study NCT04607616. IPD Sharing: NO. Countries: 1. Publications: 1.
Observing Infant Feeding Interactions
ClinicalTrials.gov study NCT02517970. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Data from: The effects of pastoral intensification on the feeding interactions of generalist predators in streams
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Data from: Detailed monitoring of a small but recovering population reveals sublethal effects of disease and unexpected interactions with supplemental feeding
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Data from: Plant fertilization interacts with life history: variation in stoichiometry and performance in nettle-feeding butterflies.
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Data from: Do intraspecific or interspecific interactions determine responses to predators feeding on a shared size-structured prey community?
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Data from: Local interactions and self-organized spatial patterns stabilize microbial cross-feeding against cheaters
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Variation in social feeding behaviors and interactions among Caenorhabditis nematodes
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Phytochemistry-mediated disruption of ant-aphid interactions by root-feeding nematodes
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Data from: Starving the enemy? Feeding behavior shapes host-parasite interactions
The loss of appetite that typically accompanies infection or the mere exposure to parasites is traditionally considered a negative by-product of infection, benefitting neither the host nor the parasite. In fact, numerous medical and veterinary practices directly or indirectly subvert this 'illness-mediated anorexia'. However, the ecological factors that influence it, its effects on disease outcomes, or why it evolved remains poorly resolved. We explore how hosts use anorexia to defend against infection and how parasites can manipulate anorexia to enhance transmission. Then, we use a coevolutionary model to illustrate how changes to anorexia could alter disease dynamics and virulence evolution. Anorexia could be exploited to improve host health and disease management; we propose an interdisciplinary approach to minimize unintended consequences.
Inferring quantitative species interactions of seeds and seed-feeding carabid beetles from ecological survey data
<p>Here, we develop a trait-based approach suitable for creating quantitative networks, i.e. with varying interaction strengths. We applied this method to existing ecological survey data from an arable field of carabid ground beetles (Coleoptera: Carabidae) from pitfall traps and plant seeds from seed rain traps. We used existing data in the literature to predict a per-individual interaction cost index from carabid and seed size, based on frequency-dependent prey selection and the energetic intake of seeds by carabids. This was scaled up to the population level to create predicted inferred weighted networks using the sampled abundance of carabids and seeds, energetic intake rates in the literature, and assuming bottom up control. From this we calculated a novel predation pressure ratio which was the predicted seed predation (the sum of interaction strengths) relative to seed abundance.</p> <p>This is made available as an R markdown file with associated data files.</p>
Generalised host-plant feeding can hide sterol specialised foraging behaviours in bee-plant interactions
<p><span><span><span><span><span><span><span><span><span><span><span>Host-plant selection is a key factor driving the ecology and evolution of insects. While the majority of phytophagous insects are highly host specific, generalist behaviour is quite widespread among bees and presumably involves physiological adaptations that remain largely unexplored. However floral visitation patterns suggest that generalist bees do not forage randomly on all available resources. While resource availability and accessibility as well as nectar composition have been widely explored, pollen chemistry could also have an impact on the range of suitable host-plants. This study focuses on particular pollen nutrients that cannot be synthesised de novo by insects but are key compounds of cell membranes and the precursor for moulting process: the sterols. We compared the sterol composition of pollen from the main host-plants of three generalist bees: <i>Anthophora plumipes</i>,<i>Colletes cunicularius</i>and <i>Osmia cornuta</i>, as well as one specialist bee <i>Andrena vaga</i>. We also analysed the sterols of their brood cell provisions, the tissues of larvae and non-emerged females to determine which sterols are used by the different species. Our results show that sterols are not used accordingly to foraging strategy: Both the specialist species <i>Andrena vaga</i>and the generalist species <i>Colletes cunicularius</i>might metabolise a rare C<sub>27</sub>sterol, while the two generalist species <i>Anthophora plumipes</i>and <i>Osmia</i><i>cornuta</i>might rather use a very common C<sub>28</sub>sterol. Our results suggest that shared sterolic compounds among plant species could facilitate the exploitation of multiple host-plants by <i>A. plumipes</i>and <i>O. cornuta</i>whereas the generalist <i>C. cunicularius</i>might be more constrained due to its physiological requirements of a more uncommon dietary sterol. Our findings suggest that a bee displaying a generalist foraging behaviour may sometimes hide a sterol-specialised species. This evidence challenges the hypothesis that all generalist free-living bee species are all able to develop on a wide range of different pollen types.</span></span></span></span></span></span></span></span></span></span></span></p>
Data from: Modeling and quantifying frequency-dependent fitness in microbial populations with cross-feeding interactions
Coexistence of two or more populations by frequency-dependent selection is common in nature, and it often arises even in well-mixed experiments with microbes. If ecology is to be incorporated into models of population genetics, then it is important to represent accurately the functional form of frequency-dependent interactions. However, measuring this functional form is problematic for traditional fitness assays, which assume a constant fitness difference between competitors over the course of an assay. Here, we present a theoretical framework for measuring the functional form of frequency-dependent fitness by accounting for changes in abundance and relative fitness during a competition assay. Using two examples of ecological coexistence that arose in a long-term evolution experiment with Escherichia coli, we illustrate accurate quantification of the functional form of frequency-dependent relative fitness. Using a Monod-type model of growth dynamics, we show that two ecotypes in a typical cross-feeding interaction—such as when one bacterial population uses a byproduct generated by another—yields relative fitness that is linear with relative frequency.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.