Modality-specific long-term memory enhancement in Heliconius butterflies
How animals perceive, process and respond to environmental cues is tightly tuned to species-specific ecological demands and reflected by the structure of neural systems. In the Neotropical butterflies, , the mushroom bodies, insect learning and memory centres are significantly expanded compared with...
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| Vydáno v: | Philosophical transactions of the Royal Society of London. Series B. Biological sciences Ročník 380; číslo 1929; s. 20240119 |
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| Hlavní autoři: | , , , , , , , , |
| Médium: | Journal Article |
| Jazyk: | angličtina |
| Vydáno: |
England
26.06.2025
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| Témata: | |
| ISSN: | 1471-2970, 1471-2970 |
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| Abstract | How animals perceive, process and respond to environmental cues is tightly tuned to species-specific ecological demands and reflected by the structure of neural systems. In the Neotropical butterflies,
, the mushroom bodies, insect learning and memory centres are significantly expanded compared with their closest relatives. This expansion coincided with the evolution of a novel diet of pollen and the ability to learn spatial foraging routes. Previous research has shown that
have more accurate long-term visual memory than other Heliconiini. Here, we test whether this enhanced memory stability is specific to visual contexts by conducting a long-term olfactory memory assay in two
species and two outgroup species. We found no difference in long-term olfactory memory between
and outgroup Heliconiini, and combining data from olfactory and visual memory trials confirmed a modality-specific improvement in memory recall in
. Tests of how Heliconiini species prioritize olfactory and visual cues when presented in conflict show no consistent pattern, suggesting that variation in memory stability is not explained by inter-specific differences in attentiveness to sensory cues. Our data provide a rare case where memory performance has been compared across species and sensory modalities to identify evidence of a modality-specific shift.This article is part of the Theo Murphy meeting issue 'Selection shapes diverse animal minds'. |
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| AbstractList | How animals perceive, process and respond to environmental cues is tightly tuned to species-specific ecological demands and reflected by the structure of neural systems. In the Neotropical butterflies,
, the mushroom bodies, insect learning and memory centres are significantly expanded compared with their closest relatives. This expansion coincided with the evolution of a novel diet of pollen and the ability to learn spatial foraging routes. Previous research has shown that
have more accurate long-term visual memory than other Heliconiini. Here, we test whether this enhanced memory stability is specific to visual contexts by conducting a long-term olfactory memory assay in two
species and two outgroup species. We found no difference in long-term olfactory memory between
and outgroup Heliconiini, and combining data from olfactory and visual memory trials confirmed a modality-specific improvement in memory recall in
. Tests of how Heliconiini species prioritize olfactory and visual cues when presented in conflict show no consistent pattern, suggesting that variation in memory stability is not explained by inter-specific differences in attentiveness to sensory cues. Our data provide a rare case where memory performance has been compared across species and sensory modalities to identify evidence of a modality-specific shift.This article is part of the Theo Murphy meeting issue 'Selection shapes diverse animal minds'. How animals perceive, process and respond to environmental cues is tightly tuned to species-specific ecological demands and reflected by the structure of neural systems. In the Neotropical butterflies, Heliconius, the mushroom bodies, insect learning and memory centres are significantly expanded compared with their closest relatives. This expansion coincided with the evolution of a novel diet of pollen and the ability to learn spatial foraging routes. Previous research has shown that Heliconius have more accurate long-term visual memory than other Heliconiini. Here, we test whether this enhanced memory stability is specific to visual contexts by conducting a long-term olfactory memory assay in two Heliconius species and two outgroup species. We found no difference in long-term olfactory memory between Heliconius and outgroup Heliconiini, and combining data from olfactory and visual memory trials confirmed a modality-specific improvement in memory recall in Heliconius. Tests of how Heliconiini species prioritize olfactory and visual cues when presented in conflict show no consistent pattern, suggesting that variation in memory stability is not explained by inter-specific differences in attentiveness to sensory cues. Our data provide a rare case where memory performance has been compared across species and sensory modalities to identify evidence of a modality-specific shift.This article is part of the Theo Murphy meeting issue 'Selection shapes diverse animal minds'.How animals perceive, process and respond to environmental cues is tightly tuned to species-specific ecological demands and reflected by the structure of neural systems. In the Neotropical butterflies, Heliconius, the mushroom bodies, insect learning and memory centres are significantly expanded compared with their closest relatives. This expansion coincided with the evolution of a novel diet of pollen and the ability to learn spatial foraging routes. Previous research has shown that Heliconius have more accurate long-term visual memory than other Heliconiini. Here, we test whether this enhanced memory stability is specific to visual contexts by conducting a long-term olfactory memory assay in two Heliconius species and two outgroup species. We found no difference in long-term olfactory memory between Heliconius and outgroup Heliconiini, and combining data from olfactory and visual memory trials confirmed a modality-specific improvement in memory recall in Heliconius. Tests of how Heliconiini species prioritize olfactory and visual cues when presented in conflict show no consistent pattern, suggesting that variation in memory stability is not explained by inter-specific differences in attentiveness to sensory cues. Our data provide a rare case where memory performance has been compared across species and sensory modalities to identify evidence of a modality-specific shift.This article is part of the Theo Murphy meeting issue 'Selection shapes diverse animal minds'. |
| Author | Farnworth, Max S McMillan, W Owen Alcalde Anton, Amaia Margereth Aguilar, Jane Dalbosco Dell'Aglio, Denise Hernández, Greta Hodge, Elizabeth A Bestea, Louise Montgomery, Stephen H |
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| Keywords | vision olfaction learning Heliconiini associative memory mushroom body |
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| SubjectTerms | Animals Butterflies - physiology Cues Memory, Long-Term Olfactory Perception Smell Species Specificity Visual Perception |
| Title | Modality-specific long-term memory enhancement in Heliconius butterflies |
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