Cargando…
Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths
Animals vary widely in body size within and across species. This has consequences for the function of organs and body parts in both large and small individuals. How these scale, in relation to body size, reveals evolutionary investment strategies, often resulting in trade-offs between functions. Eye...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9326294/ https://www.ncbi.nlm.nih.gov/pubmed/35892218 http://dx.doi.org/10.1098/rspb.2022.0758 |
_version_ | 1784757250858942464 |
---|---|
author | Stöckl, Anna Grittner, Rebecca Taylor, Gavin Rau, Christoph Bodey, Andrew J. Kelber, Almut Baird, Emily |
author_facet | Stöckl, Anna Grittner, Rebecca Taylor, Gavin Rau, Christoph Bodey, Andrew J. Kelber, Almut Baird, Emily |
author_sort | Stöckl, Anna |
collection | PubMed |
description | Animals vary widely in body size within and across species. This has consequences for the function of organs and body parts in both large and small individuals. How these scale, in relation to body size, reveals evolutionary investment strategies, often resulting in trade-offs between functions. Eyes exemplify these trade-offs, as they are limited by their absolute size in two key performance features: sensitivity and spatial acuity. Due to their size polymorphism, insect compound eyes are ideal models for studying the allometric scaling of eye performance. Previous work on apposition compound eyes revealed that allometric scaling led to poorer spatial resolution and visual sensitivity in small individuals, across a range of insect species. Here, we used X-ray microtomography to investigate allometric scaling in superposition compound eyes—the second most common eye type in insects—for the first time. Our results reveal a novel strategy to cope with the trade-off between sensitivity and spatial acuity, as we show that the eyes of the hummingbird hawkmoth retain an optimal balance between these performance measures across all body sizes. |
format | Online Article Text |
id | pubmed-9326294 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-93262942022-07-29 Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths Stöckl, Anna Grittner, Rebecca Taylor, Gavin Rau, Christoph Bodey, Andrew J. Kelber, Almut Baird, Emily Proc Biol Sci Evolution Animals vary widely in body size within and across species. This has consequences for the function of organs and body parts in both large and small individuals. How these scale, in relation to body size, reveals evolutionary investment strategies, often resulting in trade-offs between functions. Eyes exemplify these trade-offs, as they are limited by their absolute size in two key performance features: sensitivity and spatial acuity. Due to their size polymorphism, insect compound eyes are ideal models for studying the allometric scaling of eye performance. Previous work on apposition compound eyes revealed that allometric scaling led to poorer spatial resolution and visual sensitivity in small individuals, across a range of insect species. Here, we used X-ray microtomography to investigate allometric scaling in superposition compound eyes—the second most common eye type in insects—for the first time. Our results reveal a novel strategy to cope with the trade-off between sensitivity and spatial acuity, as we show that the eyes of the hummingbird hawkmoth retain an optimal balance between these performance measures across all body sizes. The Royal Society 2022-07-27 2022-07-27 /pmc/articles/PMC9326294/ /pubmed/35892218 http://dx.doi.org/10.1098/rspb.2022.0758 Text en © 2022 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Evolution Stöckl, Anna Grittner, Rebecca Taylor, Gavin Rau, Christoph Bodey, Andrew J. Kelber, Almut Baird, Emily Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths |
title | Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths |
title_full | Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths |
title_fullStr | Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths |
title_full_unstemmed | Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths |
title_short | Allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths |
title_sort | allometric scaling of a superposition eye optimizes sensitivity and acuity in large and small hawkmoths |
topic | Evolution |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9326294/ https://www.ncbi.nlm.nih.gov/pubmed/35892218 http://dx.doi.org/10.1098/rspb.2022.0758 |
work_keys_str_mv | AT stocklanna allometricscalingofasuperpositioneyeoptimizessensitivityandacuityinlargeandsmallhawkmoths AT grittnerrebecca allometricscalingofasuperpositioneyeoptimizessensitivityandacuityinlargeandsmallhawkmoths AT taylorgavin allometricscalingofasuperpositioneyeoptimizessensitivityandacuityinlargeandsmallhawkmoths AT rauchristoph allometricscalingofasuperpositioneyeoptimizessensitivityandacuityinlargeandsmallhawkmoths AT bodeyandrewj allometricscalingofasuperpositioneyeoptimizessensitivityandacuityinlargeandsmallhawkmoths AT kelberalmut allometricscalingofasuperpositioneyeoptimizessensitivityandacuityinlargeandsmallhawkmoths AT bairdemily allometricscalingofasuperpositioneyeoptimizessensitivityandacuityinlargeandsmallhawkmoths |