scholarly journals Fine‐scale foraging behavior reveals differences in the functional roles of herbivorous reef fishes

2021 ◽  
Author(s):  
Robert F. Semmler ◽  
Simon J. Brandl ◽  
Sally A. Keith ◽  
David R. Bellwood
Keyword(s):  
Foraging Behavior ◽  
Reef Fishes ◽  
Fine Scale ◽  
Functional Roles

scholarly journals White-capped albatrosses alter fine-scale foraging behavior patterns when associated with fishing vessels

2011 ◽  
Vol 428 ◽  
pp. 289-301 ◽  
Author(s):  
LG Torres ◽  
DR Thompson ◽  
S Bearhop ◽  
S Votier ◽  
GA Taylor ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Behavior Patterns ◽  
Fine Scale ◽  
Fishing Vessels

Using a mandible accelerometer to study fine-scale foraging behavior of free-ranging Antarctic fur seals

2011 ◽  
Vol 28 (2) ◽  
pp. 345-357 ◽  
Author(s):  
Takashi Iwata ◽  
Kentaro Q. Sakamoto ◽  
Akinori Takahashi ◽  
Ewan W. J. Edwards ◽  
Iain J. Staniland ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Fine Scale ◽  
Fur Seals ◽  
Free Ranging ◽  
Antarctic Fur Seals

scholarly journals Dynamic oceanography determines fine scale foraging behavior of Masked Boobies in the Gulf of Mexico

PLoS ONE ◽  
2017 ◽  
Vol 12 (6) ◽  
pp. e0178318 ◽  
Author(s):  
Caroline L. Poli ◽  
Autumn-Lynn Harrison ◽  
Adriana Vallarino ◽  
Patrick D. Gerard ◽  
Patrick G. R. Jodice
Keyword(s):  
Gulf Of Mexico ◽  
Foraging Behavior ◽  
Fine Scale

Fine-Scale Distribution, Abundance, and Foraging Behavior of Salvin's, Buller's, and Chatham Albatrosses in the Northern Humboldt Upwelling System1

2021 ◽  
Vol 75 (1) ◽  
Author(s):  
Javier Quiñones ◽  
Ana Alegre ◽  
Cynthia Romero ◽  
Massiel Manrique ◽  
Luis Vásquez
Keyword(s):  
Foraging Behavior ◽  
Fine Scale

Prey density and depth affect the fine-scale foraging behavior of humpback whales Megaptera novaeangliae in Sitka Sound, Alaska, USA

2016 ◽  
Vol 561 ◽  
pp. 245-260 ◽  
Author(s):  
JA Burrows ◽  
DW Johnston ◽  
JM Straley ◽  
EM Chenoweth ◽  
C Ware ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Prey Density ◽  
Megaptera Novaeangliae ◽  
Humpback Whales ◽  
Fine Scale ◽  
Sitka Sound

scholarly journals Do similar foragers flock together? Nonbreeding foraging behavior and its impact on mixed-species flocking associations in a subtropical region

The Auk ◽  
2020 ◽  
Vol 137 (2) ◽  
Author(s):  
Harrison H Jones ◽  
Mitchell J Walters ◽  
Scott K Robinson
Keyword(s):  
Foraging Behavior ◽  
Relative Abundance ◽  
Foraging Ecology ◽  
Fine Scale ◽  
Mixed Species ◽  
Substrate Use ◽  
Nonbreeding Season ◽  
Abundance Patterns ◽  
Mixed Species Flocks ◽  
Species Flocks

Abstract Mixed-species flocks are ubiquitous in forest bird communities, yet the extent to which positive (facilitative) or negative (competitive) interactions structure these assemblages has been a subject of debate. Here, we describe the fine-scale foraging ecology and use network analysis to quantify mixed-species flocking interactions of an insectivorous bird community in hardwood forests of north-central Florida. Our goal was to determine if similarly foraging species are more (facilitation hypothesis) or less (competition hypothesis) likely to associate in flocks, and if foraging ecology can explain intraspecific abundance patterns within flocks. We quantified attack maneuvers, foraging substrate, and foraging microhabitat of all 17 common insectivorous species in these forests and characterized the composition of 92 flocks encountered. Flocking was important in our community; 14 of 17 species joined more than 5% of flocks, and 10 species had flocking propensities of over 0.80. Our results supported both hypothesized mechanisms structuring flock composition. Species had distinct, well-defined foraging niches during the nonbreeding season, but foraging niche overlap among flocking species was greater than expected by chance. Consistent with the facilitation hypothesis, we found that similarly foraging species were significantly more likely to associate in flocks, a result driven by lower association strengths in large-bodied woodpeckers. We found no evidence of assortment by foraging behavior, however, likely because foraging behavior and substrate use showed strong niche partitioning at the fine scale within our community. Intraspecific abundance patterns were significantly linked to foraging substrate use, with live leaf use correlated with high within-flock abundance and relative abundance at study sites. Species that specialized on comparatively less abundant substrates (tree trunks, epiphytes, dead leaves) joined flocks as singletons, showed lower relative abundance, and may exhibit nonbreeding territoriality. Our results highlight the importance of foraging substrate use and mixed-species flocks in structuring the nonbreeding ecology of migratory birds.

scholarly journals Fine-Scale Variability in Harbor Seal Foraging Behavior

PLoS ONE ◽  
2014 ◽  
Vol 9 (4) ◽  
pp. e92838 ◽  
Author(s):  
Kenady Wilson ◽  
Monique Lance ◽  
Steven Jeffries ◽  
Alejandro Acevedo-Gutiérrez
Keyword(s):  
Foraging Behavior ◽  
Harbor Seal ◽  
Fine Scale

scholarly journals Fitness Landscape of the Fission Yeast Genome

2018 ◽  
Author(s):  
Leanne Grech ◽  
Daniel Charlton Jeffares ◽  
Christoph Yves Sadée ◽  
María Rodríguez-López ◽  
Danny Asher Bitton ◽  
...  
Keyword(s):  
Comparative Genomics ◽  
Fitness Landscape ◽  
Yeast Genome ◽  
Fine Scale ◽  
Functional Elements ◽  
Protein Coding ◽  
Functional Roles ◽  
Coding Regions ◽  
Transposon Insertions ◽  
Diversity Studies

AbstractBackgroundNon-protein-coding regions of eukaryotic genomes remain poorly understood. Diversity studies, comparative genomics and biochemical outputs of genomic sites can be indicators of functional elements, but none produce fine-scale genome-wide descriptions of all functional elements.ResultsTowards the generation of a comprehensive description of functional elements in the haploid Schizosaccharomyces pombe genome, we generated transposon mutagenesis libraries to a density of one insertion per 13 nucleotides of the genome. We applied a five-state hidden Markov model (HMM) to characterise insertion-depleted regions at nucleotide-level resolution. HMM-defined functional constraint was consistent with genetic diversity, comparative genomics, gene-expression data and genome annotation.ConclusionsWe infer that transposon insertions lead to fitness consequences in 90% of the genome, including 80% of the non-protein-coding regions, reflecting the presence of numerous non-coding elements in this compact genome that have functional roles. Display of this data in genome browsers provides fine-scale views of structure-function relationships within specific genes.

High Resolution Stereography of Complementary Freeze-Fracture Replicas Reveals the Presence of Depressions Opposite Membrane Associated Particles of Split Membranes

1971 ◽  
Vol 29 ◽  
pp. 442-443
Author(s):  
Russell L. Steere
Keyword(s):  
High Resolution ◽  
Cardiac Muscle ◽  
Electron Micrographs ◽  
Chromic Acid ◽  
Freeze Fracture ◽  
Distilled Water ◽  
Fine Scale ◽  
Acid Cleaning ◽  
Cleaning Solution

Complementary replicas have revealed the fact that the two common faces observed in electron micrographs of freeze-fracture and freeze-etch specimens are complementary to each other and are thus the new faces of a split membrane rather than the original inner and outer surfaces (1, 2 and personal observations). The big question raised by published electron micrographs is why do we not see depressions in the complementary face opposite membrane-associated particles? Reports have appeared indicating that some depressions do appear but complementarity on such a fine scale has yet to be shown.Dog cardiac muscle was perfused with glutaraldehyde, washed in distilled water, then transferred to 30% glycerol (material furnished by Dr. Joaquim Sommer, Duke Univ., and VA Hospital, Durham, N.C.). Small strips were freeze-fractured in a Denton Vacuum DFE-2 Freeze-Etch Unit with complementary replica tooling. Replicas were cleaned in chromic acid cleaning solution, then washed in 4 changes of distilled water and mounted on opposite sides of the center wire of a Formvar-coated grid.

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