Can cryptic female choice prevent invasive hybridization in external fertilizing fish?
Abstract Polyandrous mating systems result in females mating with multiple males, generating opportunities for strong pre‐mating and post‐mating sexual selection. Polyandry also creates the potential for unintended matings and subsequent sperm competition with hybridizing species. Cryptic female cho...
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Online Access: | https://doi.org/10.1111/eva.13573 https://doaj.org/article/216ba75eb535485486432ce6d5da40e4 |
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ftdoajarticles:oai:doaj.org/article:216ba75eb535485486432ce6d5da40e4 2023-09-26T15:16:13+02:00 Can cryptic female choice prevent invasive hybridization in external fertilizing fish? Tyler H. Lantiegne Craig F. Purchase 2023-08-01T00:00:00Z https://doi.org/10.1111/eva.13573 https://doaj.org/article/216ba75eb535485486432ce6d5da40e4 EN eng Wiley https://doi.org/10.1111/eva.13573 https://doaj.org/toc/1752-4571 1752-4571 doi:10.1111/eva.13573 https://doaj.org/article/216ba75eb535485486432ce6d5da40e4 Evolutionary Applications, Vol 16, Iss 8, Pp 1412-1421 (2023) alternative reproductive tactics conspecific sperm preference mate choice polyandry post‐copulatory sexual selection Salmo salar Evolution QH359-425 article 2023 ftdoajarticles https://doi.org/10.1111/eva.13573 2023-08-27T00:37:36Z Abstract Polyandrous mating systems result in females mating with multiple males, generating opportunities for strong pre‐mating and post‐mating sexual selection. Polyandry also creates the potential for unintended matings and subsequent sperm competition with hybridizing species. Cryptic female choice allows females to bias paternity towards preferred males under sperm competition and may include conspecific sperm preference when under hybridization risk. The potential for hybridization becomes particularly important in context of invasive species that can novelly hybridize with natives, and by definition, have evolved allopatrically. We provide the first examination of conspecific sperm preference in a system of three species with the potential to hybridize: North American native Atlantic salmon (Salmo salar) and brook char (Salvelinus fontinalis), and invasive brown trout (Salmo trutta) from Europe. Using naturalized populations on the island of Newfoundland, we measured changes in sperm swimming performance, a known predictor of paternity, to determine the degree of modification in sperm swimming to female cues related to conspecific sperm preference. Compared to water alone, female ovarian fluid in general had a pronounced effect and changed sperm motility (by a mean of 53%) and swimming velocity (mean 30%), but not linearity (mean 6%). However, patterns in the degree of modification suggest there is no conspecific sperm preference in the North American populations. Furthermore, female cues from both native species tended to boost the sperm of invasive males more than their own. We conclude that cryptic female choice via ovarian fluid mediated sperm swimming modification is too weak in this system to prevent invasive hybridization and is likely insufficient to promote or maintain reproductive isolation between the native North American species. Article in Journal/Newspaper Atlantic salmon Newfoundland Salmo salar Directory of Open Access Journals: DOAJ Articles Evolutionary Applications 16 8 1412 1421 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
alternative reproductive tactics conspecific sperm preference mate choice polyandry post‐copulatory sexual selection Salmo salar Evolution QH359-425 |
spellingShingle |
alternative reproductive tactics conspecific sperm preference mate choice polyandry post‐copulatory sexual selection Salmo salar Evolution QH359-425 Tyler H. Lantiegne Craig F. Purchase Can cryptic female choice prevent invasive hybridization in external fertilizing fish? |
topic_facet |
alternative reproductive tactics conspecific sperm preference mate choice polyandry post‐copulatory sexual selection Salmo salar Evolution QH359-425 |
description |
Abstract Polyandrous mating systems result in females mating with multiple males, generating opportunities for strong pre‐mating and post‐mating sexual selection. Polyandry also creates the potential for unintended matings and subsequent sperm competition with hybridizing species. Cryptic female choice allows females to bias paternity towards preferred males under sperm competition and may include conspecific sperm preference when under hybridization risk. The potential for hybridization becomes particularly important in context of invasive species that can novelly hybridize with natives, and by definition, have evolved allopatrically. We provide the first examination of conspecific sperm preference in a system of three species with the potential to hybridize: North American native Atlantic salmon (Salmo salar) and brook char (Salvelinus fontinalis), and invasive brown trout (Salmo trutta) from Europe. Using naturalized populations on the island of Newfoundland, we measured changes in sperm swimming performance, a known predictor of paternity, to determine the degree of modification in sperm swimming to female cues related to conspecific sperm preference. Compared to water alone, female ovarian fluid in general had a pronounced effect and changed sperm motility (by a mean of 53%) and swimming velocity (mean 30%), but not linearity (mean 6%). However, patterns in the degree of modification suggest there is no conspecific sperm preference in the North American populations. Furthermore, female cues from both native species tended to boost the sperm of invasive males more than their own. We conclude that cryptic female choice via ovarian fluid mediated sperm swimming modification is too weak in this system to prevent invasive hybridization and is likely insufficient to promote or maintain reproductive isolation between the native North American species. |
format |
Article in Journal/Newspaper |
author |
Tyler H. Lantiegne Craig F. Purchase |
author_facet |
Tyler H. Lantiegne Craig F. Purchase |
author_sort |
Tyler H. Lantiegne |
title |
Can cryptic female choice prevent invasive hybridization in external fertilizing fish? |
title_short |
Can cryptic female choice prevent invasive hybridization in external fertilizing fish? |
title_full |
Can cryptic female choice prevent invasive hybridization in external fertilizing fish? |
title_fullStr |
Can cryptic female choice prevent invasive hybridization in external fertilizing fish? |
title_full_unstemmed |
Can cryptic female choice prevent invasive hybridization in external fertilizing fish? |
title_sort |
can cryptic female choice prevent invasive hybridization in external fertilizing fish? |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1111/eva.13573 https://doaj.org/article/216ba75eb535485486432ce6d5da40e4 |
genre |
Atlantic salmon Newfoundland Salmo salar |
genre_facet |
Atlantic salmon Newfoundland Salmo salar |
op_source |
Evolutionary Applications, Vol 16, Iss 8, Pp 1412-1421 (2023) |
op_relation |
https://doi.org/10.1111/eva.13573 https://doaj.org/toc/1752-4571 1752-4571 doi:10.1111/eva.13573 https://doaj.org/article/216ba75eb535485486432ce6d5da40e4 |
op_doi |
https://doi.org/10.1111/eva.13573 |
container_title |
Evolutionary Applications |
container_volume |
16 |
container_issue |
8 |
container_start_page |
1412 |
op_container_end_page |
1421 |
_version_ |
1778137385378250752 |