Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding
Abstract A mismatch in synchrony between male and female gamete release in external fertilizers can result in reduced or failed fertilization, sperm competition, and reduced paternity. In Arctic charr (Salvelinus alpinus), males can adopt either a guard or sneak tactic resulting in both pre‐ and pos...
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ftdoajarticles:oai:doaj.org/article:74934637473d4bca9ffaac386d92b657 2023-05-15T14:30:04+02:00 Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding Magnus B. Brattli Torvald B. Egeland Jarle T. Nordeide Ivar Folstad 2018-08-01T00:00:00Z https://doi.org/10.1002/ece3.4277 https://doaj.org/article/74934637473d4bca9ffaac386d92b657 EN eng Wiley https://doi.org/10.1002/ece3.4277 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.4277 https://doaj.org/article/74934637473d4bca9ffaac386d92b657 Ecology and Evolution, Vol 8, Iss 16, Pp 8076-8087 (2018) female choice mate guarding reproductive behavior spawning synchrony sperm competition vibrational communication Ecology QH540-549.5 article 2018 ftdoajarticles https://doi.org/10.1002/ece3.4277 2022-12-31T05:15:51Z Abstract A mismatch in synchrony between male and female gamete release in external fertilizers can result in reduced or failed fertilization, sperm competition, and reduced paternity. In Arctic charr (Salvelinus alpinus), males can adopt either a guard or sneak tactic resulting in both pre‐ and postcopulatory competition between males with alternative reproduction tactics. Here, spawning behavior of free‐living Arctic charr was video‐recorded, and their reproductive behavior was analyzed. From evaluating 157 spawning events, we observed that females mainly spawned with a guarding male and that the female and the guarding male synchronized timing of gamete release under sperm competition. Although sneakers spawned with higher synchrony than the guarding male in single‐male spawning events, the average sneaker released his milt less synchronized with the female than the guarding male under sperm competition. Approximately 50% of the recorded spawning events occurred under sperm competition, where each event included an average of 2.7 males. Additionally, sneakers were more exposed to sperm competition than guarding males. An influx of males, in close proximity to the female, occurred during the behavioral sequences leading up to egg release, but this influx seemed not dependent on egg release, suggesting that something else than gonadal product attracts sneaker males to the spawning female. Just before and during the actual release of gametes, the spawning couple vibrates their bodies in close contact and it seems likely that this vibrational communication between the spawning couple, which results in a larger amplitude sound wave than seen under regular courting, reveals time of gamete release to sneaker males. Thus, vibrational communication may enable synchrony between the guarding male and the female, and this might be traded against the cost of higher detectability from surrounding sneaker males, eavesdropping in close proximity. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Directory of Open Access Journals: DOAJ Articles Arctic Ecology and Evolution 8 16 8076 8087 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
female choice mate guarding reproductive behavior spawning synchrony sperm competition vibrational communication Ecology QH540-549.5 |
spellingShingle |
female choice mate guarding reproductive behavior spawning synchrony sperm competition vibrational communication Ecology QH540-549.5 Magnus B. Brattli Torvald B. Egeland Jarle T. Nordeide Ivar Folstad Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding |
topic_facet |
female choice mate guarding reproductive behavior spawning synchrony sperm competition vibrational communication Ecology QH540-549.5 |
description |
Abstract A mismatch in synchrony between male and female gamete release in external fertilizers can result in reduced or failed fertilization, sperm competition, and reduced paternity. In Arctic charr (Salvelinus alpinus), males can adopt either a guard or sneak tactic resulting in both pre‐ and postcopulatory competition between males with alternative reproduction tactics. Here, spawning behavior of free‐living Arctic charr was video‐recorded, and their reproductive behavior was analyzed. From evaluating 157 spawning events, we observed that females mainly spawned with a guarding male and that the female and the guarding male synchronized timing of gamete release under sperm competition. Although sneakers spawned with higher synchrony than the guarding male in single‐male spawning events, the average sneaker released his milt less synchronized with the female than the guarding male under sperm competition. Approximately 50% of the recorded spawning events occurred under sperm competition, where each event included an average of 2.7 males. Additionally, sneakers were more exposed to sperm competition than guarding males. An influx of males, in close proximity to the female, occurred during the behavioral sequences leading up to egg release, but this influx seemed not dependent on egg release, suggesting that something else than gonadal product attracts sneaker males to the spawning female. Just before and during the actual release of gametes, the spawning couple vibrates their bodies in close contact and it seems likely that this vibrational communication between the spawning couple, which results in a larger amplitude sound wave than seen under regular courting, reveals time of gamete release to sneaker males. Thus, vibrational communication may enable synchrony between the guarding male and the female, and this might be traded against the cost of higher detectability from surrounding sneaker males, eavesdropping in close proximity. |
format |
Article in Journal/Newspaper |
author |
Magnus B. Brattli Torvald B. Egeland Jarle T. Nordeide Ivar Folstad |
author_facet |
Magnus B. Brattli Torvald B. Egeland Jarle T. Nordeide Ivar Folstad |
author_sort |
Magnus B. Brattli |
title |
Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding |
title_short |
Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding |
title_full |
Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding |
title_fullStr |
Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding |
title_full_unstemmed |
Spawning behavior of Arctic charr (Salvelinus alpinus): Spawning synchrony, vibrational communication, and mate guarding |
title_sort |
spawning behavior of arctic charr (salvelinus alpinus): spawning synchrony, vibrational communication, and mate guarding |
publisher |
Wiley |
publishDate |
2018 |
url |
https://doi.org/10.1002/ece3.4277 https://doaj.org/article/74934637473d4bca9ffaac386d92b657 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Ecology and Evolution, Vol 8, Iss 16, Pp 8076-8087 (2018) |
op_relation |
https://doi.org/10.1002/ece3.4277 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.4277 https://doaj.org/article/74934637473d4bca9ffaac386d92b657 |
op_doi |
https://doi.org/10.1002/ece3.4277 |
container_title |
Ecology and Evolution |
container_volume |
8 |
container_issue |
16 |
container_start_page |
8076 |
op_container_end_page |
8087 |
_version_ |
1766303985693622272 |