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The Neotropical Ornithological Society LOCALIZATION OF ARMY-ANT SWARMS BY ANT-FOLLOWING BIRDS ON THE CARIBBEAN SLOPE OF COSTA RICA : FOLLOWING THE VOCALIZATION OF ANTBIRDS TO FIND THE SWARMS
– On the Caribbean Slope of Costa Rica, obligate army-ant-following birds find army-ant swarms before other birds. In particular, Ocellated Antbirds (Phaenostictus mcleannani) arrived to swarmsExpand
Next generation phylogeography of cave and surface Astyanax mexicanus.
TLDR
A high-resolution phylogeography is reconstructed for Astyanax mexicanus cave populations from the Sabinos and Río Subterráneo caves and it is shown that theSabinos cave population is part of a unique cave lineage unrelated to other A. mexicansus populations. Expand
Phylogeography, genetic structure, and gene flow in the endemic freshwater shrimp Palaemonetes suttkusi from Cuatro Ciénegas, Mexico
TLDR
It is recommended that the upper parts of the Río Salado, the Pozas Azules area, and the rest of the Cuatro Ciénegas basin should each be considered independent evolutionarily significant units for conservation, and that migration of species through human-made canals should be monitored and controlled. Expand
Altitudinal movements and conservation of Bare-necked Umbrellabird Cephalopterus glabricollis of the Tilarán Mountains, Costa Rica
Bare-necked Umbrellabird Cephalopterus glabricollis is endemic to Costa Rica and western Panama. It eats fruit, breeding at high elevations (≥ 800 m) and migrating to lower elevations during theExpand
Method Review: Estimation of Colony Densities of the Army Ant Eciton burchellii in Costa Rica
We evaluated the performance of a method developed to estimate colony densities of the army ant Eciton burchellii, a keystone species, based on raid crossings on trails, in Costa Rica. The method wasExpand
High-Pitched Notes during Vocal Contests Signal Genetic Diversity in Ocellated Antbirds
TLDR
The ability to produce high pitched notes is an honest indicator of male genetic diversity in male-male aggressive interactions in ocellated antbirds. Expand
Spatial Geographic Mosaic in an Aquatic Predator-Prey Network
The geographic mosaic theory of coevolution predicts 1) spatial variation in predatory structures as well as prey defensive traits, and 2) trait matching in some areas and trait mismatching in othersExpand
Branch Width and Height Influence the Incorporation of Branches into Foraging Trails and Travel Speed in Leafcutter Ants Atta cephalotes (L.) (Hymenoptera: Formicidae)
TLDR
The results indicate that A. cephalotes can adjust their speed to compensate for the difficulty of traveling on branch slopes, and branch size should be considered when studying ant foraging efficiency. Expand
ELEVATIONAL MOVEMENTS OF LARGE FRUGIVOROUS BIRDS AND TEMPORAL VARIATION IN ABUNDANCE OF FRUITS ALONG AN ELEVATIONAL GRADIENT
– Data on the abundance of large elevational migrant fruit-eating birds along with the abundance of the fruits they eat were systematically collected during 1998 at four different elevations on theExpand
The effect of local dominance and reciprocal tolerance on feeding aggregations of ocellated antbirds
TLDR
The results suggest that reciprocal tolerance between adjacent unrelated neighbours can ameliorate intraspecific competition within ephemeral feeding aggregations. Expand
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