Results 121 to 130 of about 531 (145)
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Nectar Robbing and Pollination of Lantana camara (Verbenaceae)
Biotropica, 1976Floral robbers are categorized as nectar-foraging, nectar-foraging-perforating, and pollen-foraging. Trigona fulviventris is a nectar-foraging-perforating robber of yellow flowers of Lantana camara. Flower head maturation of L. camara is centripetal and flowers turn from yellow to reddish-orange, resulting in inflorescences of central yellow flowers ...
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The behavioral ecology of nectar robbing: why be tactic constant?
Current Opinion in Insect Science, 2017How do animals forage for variable food resources? For animals foraging at flowers, floral constancy has provided a framework for understanding why organisms visit some flowers while bypassing others. We extend this framework to the flower-handling tactics that visitors employ. Nectar robbers remove nectar through holes bitten in flowers, often without
Bronstein, Judith +4 more
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Nectar robbing in Ipomopsis aggregata : effects on pollinator behavior and plant fitness
Oecologia, 1998Hummingbirds foraging in alpine meadows of central Colorado, United States, face a heterogeneous distribution of nectar rewards. This study investigated how variability in nectar resources caused by nectar-robbing bumblebees affected the foraging behavior of hummingbird pollinators and, subsequently, the reproductive success of a host plant (Ipomopsis ...
Rebecca E, Irwin, Alison K, Brody
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Plant Biology, 2015
AbstractNectar robbing occurs when floral visitors remove floral nectar through floral damage and usually without providing pollination in return. Even though nectar robbing may have negative, neutral or even positive effects on plant fitness, few studies have investigated temporal and spatial variation in robbing rate and their consequences ...
E, Cuevas, V, Rosas-Guerrero
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AbstractNectar robbing occurs when floral visitors remove floral nectar through floral damage and usually without providing pollination in return. Even though nectar robbing may have negative, neutral or even positive effects on plant fitness, few studies have investigated temporal and spatial variation in robbing rate and their consequences ...
E, Cuevas, V, Rosas-Guerrero
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Oikos, 2016
Nectar robbers use a hole made in the perianth to extract nectar. Since robbers may modify plant fitness, they play an important role by driving evolution on floral traits, shaping population structure and influencing community dynamics. Although nectar robbing is widespread in angiosperms, the causes and ecological implications of this behaviour on ...
Sandra V. Rojas‐Nossa +2 more
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Nectar robbers use a hole made in the perianth to extract nectar. Since robbers may modify plant fitness, they play an important role by driving evolution on floral traits, shaping population structure and influencing community dynamics. Although nectar robbing is widespread in angiosperms, the causes and ecological implications of this behaviour on ...
Sandra V. Rojas‐Nossa +2 more
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Oikos, 2005
Differences in morphology among bumblebee species sharing a nectar resource may lead to variation in foraging behaviour and efficiency. Less efficient bumblebees might opportunistically switch foraging strategies from legitimate visitation to secondary robbing when hole‐biting primary robbers are present.
Daniel A. Newman, James D. Thomson
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Differences in morphology among bumblebee species sharing a nectar resource may lead to variation in foraging behaviour and efficiency. Less efficient bumblebees might opportunistically switch foraging strategies from legitimate visitation to secondary robbing when hole‐biting primary robbers are present.
Daniel A. Newman, James D. Thomson
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Ecology
Abstract Mutualistic interactions are biological markets in which different species exchange commodities to mutual benefit. Mutualisms are, however, susceptible to exploitation, with some individuals taking without reciprocating. While it is generally assumed that exploiters will inflict fitness costs, evidence for such costs is mixed
Laura C. Leal +3 more
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Abstract Mutualistic interactions are biological markets in which different species exchange commodities to mutual benefit. Mutualisms are, however, susceptible to exploitation, with some individuals taking without reciprocating. While it is generally assumed that exploiters will inflict fitness costs, evidence for such costs is mixed
Laura C. Leal +3 more
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Secondary nectar robbing by Lycaenidae and Riodinidae: Opportunistic but not infrequent
Ecology, 2022Erin E. Wilson Rankin, David T. Rankin
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NECTAR-ROBBING BUMBLE BEES REDUCE THE FITNESS OFIPOMOPSIS AGGREGATA(POLEMONIACEAE)
Ecology, 1999The removal of floral nectar by nectar robbers may change the behavior of legitimate pollinators and, consequently, the pollination and fertilization success of flowering plants. We measured the effects of a nectar-robbing bumble bee, Bombus occidentalis, on male and female reproductive success of Ipomopsis aggregata (Polemoniaceae).
Rebecca E. Irwin, Alison K. Brody
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Journal of Chemical Ecology, 2014
Plant secondary metabolites (PSMs), such as alkaloids, are often found in many parts of a plant, including flowers, providing protection to the plant from various types of herbivores or microbes. PSMs are also present in the floral nectar of many species, but typically at lower concentrations than in other parts of the plant.
Rainee L, Kaczorowski +4 more
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Plant secondary metabolites (PSMs), such as alkaloids, are often found in many parts of a plant, including flowers, providing protection to the plant from various types of herbivores or microbes. PSMs are also present in the floral nectar of many species, but typically at lower concentrations than in other parts of the plant.
Rainee L, Kaczorowski +4 more
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