Temperature-based spawning habitat selection by capelin (Mallotus villosus) in Newfoundland
Abstract The location of reproduction is a key life history trait, as it influences the bio-physical conditions that offspring experience and, thus, fitness. Capelin Mallotus villosus is a small (< 200 mm), short-lived forage fish that spawns in two habitats in coastal Newfoundland: warm beac...
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Oxford University Press (OUP)
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsx023 http://academic.oup.com/icesjms/article-pdf/74/6/1622/31245645/fsx023.pdf |
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croxfordunivpr:10.1093/icesjms/fsx023 2024-06-23T07:54:45+00:00 Temperature-based spawning habitat selection by capelin (Mallotus villosus) in Newfoundland Crook, Kevin A. Maxner, Emily Davoren, Gail K. Robert, Dominique 2017 http://dx.doi.org/10.1093/icesjms/fsx023 http://academic.oup.com/icesjms/article-pdf/74/6/1622/31245645/fsx023.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 74, issue 6, page 1622-1629 ISSN 1054-3139 1095-9289 journal-article 2017 croxfordunivpr https://doi.org/10.1093/icesjms/fsx023 2024-06-04T06:10:00Z Abstract The location of reproduction is a key life history trait, as it influences the bio-physical conditions that offspring experience and, thus, fitness. Capelin Mallotus villosus is a small (< 200 mm), short-lived forage fish that spawns in two habitats in coastal Newfoundland: warm beaches and cool, deep water (15–40 m). From 2009 to 2014, we investigated temperature-dependent spawning habitat use by quantifying hourly temperature at spawning sites during July within each habitat along with population-level spawning site use. Capelin did not spawn at sites with temperatures <2 °C or consistently >12 °C, supporting the estimated suitable spawning temperature range (2–12 °C). Spawning typically occurred exclusively at beaches early in July when deep-water habitat was too cold (i.e. <2 °C), and then switched to deep-water habitat later in July when beaches became too warm (i.e. >12 °C). Spawning overlapped for 1–3 d in both habitats when temperatures were within suitable ranges (2011, 2013), but capelin also spawned exclusively in one habitat when temperatures remained suitable in the other. The latter suggests that other factors influence spawning habitat selection, such as conspecific egg densities and other environmental conditions. Overall, the flexible use of spawning habitats, along with wide tolerance ranges of capelin eggs to environmental conditions, are likely key adaptations to maximize fitness and stabilize population dynamics of this important forage fish species in an unpredictable environment. Article in Journal/Newspaper Newfoundland Oxford University Press ICES Journal of Marine Science 74 6 1622 1629 |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract The location of reproduction is a key life history trait, as it influences the bio-physical conditions that offspring experience and, thus, fitness. Capelin Mallotus villosus is a small (< 200 mm), short-lived forage fish that spawns in two habitats in coastal Newfoundland: warm beaches and cool, deep water (15–40 m). From 2009 to 2014, we investigated temperature-dependent spawning habitat use by quantifying hourly temperature at spawning sites during July within each habitat along with population-level spawning site use. Capelin did not spawn at sites with temperatures <2 °C or consistently >12 °C, supporting the estimated suitable spawning temperature range (2–12 °C). Spawning typically occurred exclusively at beaches early in July when deep-water habitat was too cold (i.e. <2 °C), and then switched to deep-water habitat later in July when beaches became too warm (i.e. >12 °C). Spawning overlapped for 1–3 d in both habitats when temperatures were within suitable ranges (2011, 2013), but capelin also spawned exclusively in one habitat when temperatures remained suitable in the other. The latter suggests that other factors influence spawning habitat selection, such as conspecific egg densities and other environmental conditions. Overall, the flexible use of spawning habitats, along with wide tolerance ranges of capelin eggs to environmental conditions, are likely key adaptations to maximize fitness and stabilize population dynamics of this important forage fish species in an unpredictable environment. |
author2 |
Robert, Dominique |
format |
Article in Journal/Newspaper |
author |
Crook, Kevin A. Maxner, Emily Davoren, Gail K. |
spellingShingle |
Crook, Kevin A. Maxner, Emily Davoren, Gail K. Temperature-based spawning habitat selection by capelin (Mallotus villosus) in Newfoundland |
author_facet |
Crook, Kevin A. Maxner, Emily Davoren, Gail K. |
author_sort |
Crook, Kevin A. |
title |
Temperature-based spawning habitat selection by capelin (Mallotus villosus) in Newfoundland |
title_short |
Temperature-based spawning habitat selection by capelin (Mallotus villosus) in Newfoundland |
title_full |
Temperature-based spawning habitat selection by capelin (Mallotus villosus) in Newfoundland |
title_fullStr |
Temperature-based spawning habitat selection by capelin (Mallotus villosus) in Newfoundland |
title_full_unstemmed |
Temperature-based spawning habitat selection by capelin (Mallotus villosus) in Newfoundland |
title_sort |
temperature-based spawning habitat selection by capelin (mallotus villosus) in newfoundland |
publisher |
Oxford University Press (OUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1093/icesjms/fsx023 http://academic.oup.com/icesjms/article-pdf/74/6/1622/31245645/fsx023.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
ICES Journal of Marine Science volume 74, issue 6, page 1622-1629 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsx023 |
container_title |
ICES Journal of Marine Science |
container_volume |
74 |
container_issue |
6 |
container_start_page |
1622 |
op_container_end_page |
1629 |
_version_ |
1802647010026717184 |