Floral nectar is offered by plants to animals as a reward for pollination. Nectar is usually clear and contains sugar and trace amounts of amino acids. Colored nectar also occurs, but is less common....
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A female green orchid bee (Euglossa viridissima) gathers floral resins from a Clusia lanceolata plant to use in brood cell construction. A resin mass is visible on the hind leg. Almost 200 species of...
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A group of bluehead wrasse (Thalassoma bifasciatum) shoal (group together) above a reef at St. Croix, U.S. Virgin Islands. Shoaling is a common anti-predator behavior for reef fishes such as the...
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The Antarctic fur seal (Arctocephalus gazella) feeds mostly on krill (Euphausia superba). A recent found that fur seals adjust their foraging activity to track the highly variable distribution and...
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Red Knots (Calidris canutus) feed on bivalves that live buried in mud. Using their smart bill tip, Red Knots are able to find such hard-shelled prey very efficiently. Red Knots are highly gregarious,...
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A sockeye salmon (Oncorhynchus nerka) in a small breeding stream in southwestern Alaska. Adult sockeye lay their eggs in the gravel of streams, rivers, or along the beaches of lakes in late summer...
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In this article an unusual ecology laboratory/field exercise is described in which students imagine themselves as a group of indigenous woodland people attempting to gather food stores that will...
In this TIEE experiment, students investigate the costs of reproduction. In dioecious plants, a female's investment in reproduction is typically much greater than a male's, because while both sexes...
A bark scorpion (Centroides sp., green in the photograph) is pictured in an oval of ultraviolet light (purple in the photograph), demonstrating a unique method for studying scorpions in their native...
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This photograph compares the ventral wings of two individual butterflies of the same species (Bicyclus anynana) that matured during different seasons of the year. The wing on the left is produced...
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