Results 181 to 190 of about 3,200 (219)
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Speciation by hybridization in Heliconius butterflies
Nature, 2006Speciation is generally regarded to result from the splitting of a single lineage. An alternative is hybrid speciation, considered to be extremely rare, in which two distinct lineages contribute genes to a daughter species. Here we show that a hybrid trait in an animal species can directly cause reproductive isolation.
Mavarez, Jesus +5 more
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An Antiaphrodisiac in Heliconius melpomene Butterflies
Journal of Chemical Ecology, 2007Gilbert (1976) suggested that male-contributed odors of mated females of Heliconius erato could enforce monogamy. We investigated the pheromone system of a relative, Heliconius melpomene, using chemical analysis, behavioral experiments, and feeding experiments with labeled biosynthetic pheromone precursors. The abdominal scent glands of males contained
Schulz, Stefan +4 more
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Organic & Biomolecular Chemistry, 2007
The four major components present in scent gland extracts of the male Costa Rica longwing butterflies Heliconius cydno and Heliconius pachinus were identified as 12- and 14-membered macrolides containing a C(18)-carbon skeleton. By use of micro-reactions and spectrometric examinations, structural proposals were made and subsequently proven by synthesis,
Stefan, Schulz +4 more
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The four major components present in scent gland extracts of the male Costa Rica longwing butterflies Heliconius cydno and Heliconius pachinus were identified as 12- and 14-membered macrolides containing a C(18)-carbon skeleton. By use of micro-reactions and spectrometric examinations, structural proposals were made and subsequently proven by synthesis,
Stefan, Schulz +4 more
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Patterns of pollen exploitation by Heliconius butterflies
Oecologia, 1981We have studied pollen feeding habits of ten species of Heliconius butterflies in six major study areas in Trinidad and Costa Rica, and examined inter-species differences in pollen utilization under greenhouse conditions. We found: 1. Females collected significantly more pollen than males. 2.
Carol L, Boggs +2 more
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Heliconius butterflies: a window into the evolution and development of diversity
Current Opinion in Genetics & Development, 2021Butterflies have become prominent models for studying the evolution and development of phenotypic variation. In Heliconius, extraordinary within species divergence and between species convergence in wing color patterns has driven decades of comparative genetic studies.
Steven M Van Belleghem +3 more
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Journal of Experimental Biology, 2017
![Figure][1] Red postman Heliconius erato butterfly in white light. Photo credit: Susan Finkbeiner. Some colours are the visual equivalent of a scream; from ‘Eat me’, to ‘Don't eat me’, to ‘Come hither’, plants and animals constantly flaunt their talents or warn each other ...
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![Figure][1] Red postman Heliconius erato butterfly in white light. Photo credit: Susan Finkbeiner. Some colours are the visual equivalent of a scream; from ‘Eat me’, to ‘Don't eat me’, to ‘Come hither’, plants and animals constantly flaunt their talents or warn each other ...
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Antennal Responses to Floral Scents in the Butterfly Heliconius melpomene
Journal of Chemical Ecology, 2003Floral scent, together with visual floral cues, are important signals to adult butterflies searching for food-rewarding plants. To identify which compounds in a floral scent are more attractive and, thus, of biological importance to foraging butterflies, we applied electrophysiological methods.
Andersson, S., Dobson, H.
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Adaptation and Evolution in Heliconius: A Defense of NeoDarwinism
Annual Review of Ecology and Systematics, 1981The neoDarwinian theory of evolution (or "modem synthesis") may not explain evolution in the long term. In particular, it has been suggested that it explains neither the discontinuities in the fossil record [see reports on the recent conference in Chicago (68, 71a)], nor the origin of complex, integrated adaptations (49, 90).
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Retinal duality in the butterfly Heliconius charitonius
Journal of Insect Physiology, 1973Abstract Previous studies have suggested that the waveform of the insect electroretinogram could be interpreted as giving evidence for independent photopic and scotopic mechanisms in the retina (retinal duality). The present study reports the results of four types of experiments designed to test for such duality.
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