Larval Adaptation to Salinity Shock in Cane Toads (Rhinella marina) From Coastal French Guiana.
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| Title: | Larval Adaptation to Salinity Shock in Cane Toads (Rhinella marina) From Coastal French Guiana. |
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| Authors: | Ducatez, Simon1 (AUTHOR) simon.ducatez@gmail.com, Shine, Rick2 (AUTHOR), DeVore, Jayna L.1 (AUTHOR) |
| Source: | Ecology & Evolution (20457758). Oct2025, Vol. 15 Issue 10, p1-12. 12p. |
| Subject Terms: | *Salinity, *Habitat modification, Rhinella marina, Abiotic environment, Larval physiology, Tadpoles |
| Geographic Terms: | French Guiana |
| Abstract: | Many habitats not only differ in mean conditions but also in the degree to which these conditions fluctuate through time. Therefore, local adaptation to both mean abiotic conditions and habitat variability can enhance organismal viability. Within their native range in French Guiana, cane toads (Rhinella marina) inhabit both coastal beach and inland rainforest habitats. We surveyed breeding pools to quantify abiotic conditions. Breeding pools in coastal habitats exhibited high salinity levels and intermittent seawater inflow with rapid increases in salinity. Breeding pools in inland habitats had low, stable salinity levels. Salinity shock only caused mortality within coastal environments. To determine whether larvae were locally adapted to salinity conditions, we raised the offspring of toads collected from 14 inland and coastal sites under a range of salinity levels. We also mimicked seawater inflow by exposing larvae from 15 clutches to sudden increases in salinity to measure their tolerance to salinity shock. Although coastal and inland tadpoles performed similarly under constant salinity, tadpoles from coastal habitats survived a rapid increase in salinity better than did conspecifics from inland habitats. The capacity to tolerate variable environments and adapt to local conditions may have contributed to the cane toad's translocation success. [ABSTRACT FROM AUTHOR] |
| Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
| FullText | Text: Availability: 0 |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 188962051 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Larval Adaptation to Salinity Shock in Cane Toads (Rhinella marina) From Coastal French Guiana. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ducatez%2C+Simon%22">Ducatez, Simon</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> simon.ducatez@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Shine%2C+Rick%22">Shine, Rick</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22DeVore%2C+Jayna+L%2E%22">DeVore, Jayna L.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ecology+%26+Evolution+%2820457758%29%22">Ecology & Evolution (20457758)</searchLink>. Oct2025, Vol. 15 Issue 10, p1-12. 12p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Salinity%22">Salinity</searchLink><br />*<searchLink fieldCode="DE" term="%22Habitat+modification%22">Habitat modification</searchLink><br /><searchLink fieldCode="DE" term="%22Rhinella+marina%22">Rhinella marina</searchLink><br /><searchLink fieldCode="DE" term="%22Abiotic+environment%22">Abiotic environment</searchLink><br /><searchLink fieldCode="DE" term="%22Larval+physiology%22">Larval physiology</searchLink><br /><searchLink fieldCode="DE" term="%22Tadpoles%22">Tadpoles</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22French+Guiana%22">French Guiana</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Many habitats not only differ in mean conditions but also in the degree to which these conditions fluctuate through time. Therefore, local adaptation to both mean abiotic conditions and habitat variability can enhance organismal viability. Within their native range in French Guiana, cane toads (Rhinella marina) inhabit both coastal beach and inland rainforest habitats. We surveyed breeding pools to quantify abiotic conditions. Breeding pools in coastal habitats exhibited high salinity levels and intermittent seawater inflow with rapid increases in salinity. Breeding pools in inland habitats had low, stable salinity levels. Salinity shock only caused mortality within coastal environments. To determine whether larvae were locally adapted to salinity conditions, we raised the offspring of toads collected from 14 inland and coastal sites under a range of salinity levels. We also mimicked seawater inflow by exposing larvae from 15 clutches to sudden increases in salinity to measure their tolerance to salinity shock. Although coastal and inland tadpoles performed similarly under constant salinity, tadpoles from coastal habitats survived a rapid increase in salinity better than did conspecifics from inland habitats. The capacity to tolerate variable environments and adapt to local conditions may have contributed to the cane toad's translocation success. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/ece3.72244 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1 Subjects: – SubjectFull: Salinity Type: general – SubjectFull: Habitat modification Type: general – SubjectFull: Rhinella marina Type: general – SubjectFull: Abiotic environment Type: general – SubjectFull: Larval physiology Type: general – SubjectFull: Tadpoles Type: general – SubjectFull: French Guiana Type: general Titles: – TitleFull: Larval Adaptation to Salinity Shock in Cane Toads (Rhinella marina) From Coastal French Guiana. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ducatez, Simon – PersonEntity: Name: NameFull: Shine, Rick – PersonEntity: Name: NameFull: DeVore, Jayna L. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 20457758 Numbering: – Type: volume Value: 15 – Type: issue Value: 10 Titles: – TitleFull: Ecology & Evolution (20457758) Type: main |
| ResultId | 1 |
