The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism
Abstract Dynamic colour change is widespread in ectothermic animals, but has primarily been studied in the context of background matching. For most species, we lack quantitative data on the extent of colour change across different contexts. It is also unclear whether and how colour change varies acr...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-07-01
|
| Series: | Ecology and Evolution |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ece3.10293 |
| _version_ | 1797357910073802752 |
|---|---|
| author | Anuradha Batabyal Amod Zambre Tess Mclaren Katrina J. Rankin Ruchira Somaweera Devi Stuart‐Fox Maria Thaker |
| author_facet | Anuradha Batabyal Amod Zambre Tess Mclaren Katrina J. Rankin Ruchira Somaweera Devi Stuart‐Fox Maria Thaker |
| author_sort | Anuradha Batabyal |
| collection | DOAJ |
| description | Abstract Dynamic colour change is widespread in ectothermic animals, but has primarily been studied in the context of background matching. For most species, we lack quantitative data on the extent of colour change across different contexts. It is also unclear whether and how colour change varies across body regions, and how overall sexual dichromatism relates to the extent of individual colour change. In this study, we obtained reflectance measures in response to different stimuli for males and females of six species of agamid lizards (Agamidae, sister family to Chameleonidae) comprising three closely related species pairs. We computed the colour volume in a lizard‐vision colour space occupied by males and females of each species and estimated overall sexual dichromatism based on the area of non‐overlapping male and female colour volumes. As expected, males had larger colour volumes than females, but the extent of colour change in males differed between species and between body regions. Notably, species that were most sexually dichromatic were not necessarily those in which males showed the greatest individual colour change. Our results indicate that the extent of colour change is independent of the degree of sexual dichromatism and demonstrate that colour change on different body regions can vary substantially even between pairs of closely related species. |
| first_indexed | 2024-03-08T14:52:18Z |
| format | Article |
| id | doaj.art-4c75aec453984547a3ec2e80e215d155 |
| institution | Directory Open Access Journal |
| issn | 2045-7758 |
| language | English |
| last_indexed | 2024-03-08T14:52:18Z |
| publishDate | 2023-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecology and Evolution |
| spelling | doaj.art-4c75aec453984547a3ec2e80e215d1552024-01-11T02:50:01ZengWileyEcology and Evolution2045-77582023-07-01137n/an/a10.1002/ece3.10293The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatismAnuradha Batabyal0Amod Zambre1Tess Mclaren2Katrina J. Rankin3Ruchira Somaweera4Devi Stuart‐Fox5Maria Thaker6Department of Physical and Natural Sciences FLAME University Pune IndiaCentre for Ecological Sciences Indian Institute of Science Bengaluru IndiaSchool of BioSciences The University of Melbourne Parkville Victoria AustraliaSchool of BioSciences The University of Melbourne Parkville Victoria AustraliaStantec Australia Perth Western Australia AustraliaSchool of BioSciences The University of Melbourne Parkville Victoria AustraliaCentre for Ecological Sciences Indian Institute of Science Bengaluru IndiaAbstract Dynamic colour change is widespread in ectothermic animals, but has primarily been studied in the context of background matching. For most species, we lack quantitative data on the extent of colour change across different contexts. It is also unclear whether and how colour change varies across body regions, and how overall sexual dichromatism relates to the extent of individual colour change. In this study, we obtained reflectance measures in response to different stimuli for males and females of six species of agamid lizards (Agamidae, sister family to Chameleonidae) comprising three closely related species pairs. We computed the colour volume in a lizard‐vision colour space occupied by males and females of each species and estimated overall sexual dichromatism based on the area of non‐overlapping male and female colour volumes. As expected, males had larger colour volumes than females, but the extent of colour change in males differed between species and between body regions. Notably, species that were most sexually dichromatic were not necessarily those in which males showed the greatest individual colour change. Our results indicate that the extent of colour change is independent of the degree of sexual dichromatism and demonstrate that colour change on different body regions can vary substantially even between pairs of closely related species.https://doi.org/10.1002/ece3.10293chromatophorephysiological colour changereptilesexual dichromatism |
| spellingShingle | Anuradha Batabyal Amod Zambre Tess Mclaren Katrina J. Rankin Ruchira Somaweera Devi Stuart‐Fox Maria Thaker The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism Ecology and Evolution chromatophore physiological colour change reptile sexual dichromatism |
| title | The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism |
| title_full | The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism |
| title_fullStr | The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism |
| title_full_unstemmed | The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism |
| title_short | The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism |
| title_sort | extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism |
| topic | chromatophore physiological colour change reptile sexual dichromatism |
| url | https://doi.org/10.1002/ece3.10293 |
| work_keys_str_mv | AT anuradhabatabyal theextentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT amodzambre theextentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT tessmclaren theextentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT katrinajrankin theextentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT ruchirasomaweera theextentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT devistuartfox theextentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT mariathaker theextentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT anuradhabatabyal extentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT amodzambre extentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT tessmclaren extentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT katrinajrankin extentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT ruchirasomaweera extentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT devistuartfox extentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism AT mariathaker extentofrapidcolourchangeinmaleagamidlizardsisunrelatedtooverallsexualdichromatism |