Age and growth of Brauer's lanternfish <scp> Gymnoscopelus braueri </scp> and rhombic lanternfish <scp> Krefftichthys anderssoni </scp> (Family Myctophidae) in the Scotia Sea, Southern Ocean
Abstract This study examines age and growth of Brauer's lanternfish Gymnoscopelus braueri and rhombic lanternfish Krefftichthys anderssoni from the Scotia Sea in the Southern Ocean, through the analysis of annual growth increments deposited on sagittal otoliths. Otolith pairs from 177 G. brauer...
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Online Access: | http://dx.doi.org/10.1111/jfb.14206 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14206 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14206 |
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crwiley:10.1111/jfb.14206 2023-12-03T10:30:00+01:00 Age and growth of Brauer's lanternfish <scp> Gymnoscopelus braueri </scp> and rhombic lanternfish <scp> Krefftichthys anderssoni </scp> (Family Myctophidae) in the Scotia Sea, Southern Ocean Saunders, Ryan A. Lourenço, Silvia Vieira, Rui P. Collins, Martin A. Assis, Carlos A. Xavier, Jose C. 2019 http://dx.doi.org/10.1111/jfb.14206 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14206 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14206 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 96, issue 2, page 364-377 ISSN 0022-1112 1095-8649 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2019 crwiley https://doi.org/10.1111/jfb.14206 2023-11-09T13:26:28Z Abstract This study examines age and growth of Brauer's lanternfish Gymnoscopelus braueri and rhombic lanternfish Krefftichthys anderssoni from the Scotia Sea in the Southern Ocean, through the analysis of annual growth increments deposited on sagittal otoliths. Otolith pairs from 177 G. braueri and 118 K. anderssoni were collected in different seasons from the region between 2004 and 2009. Otolith‐edge analysis suggested a seasonal change in opaque and hyaline depositions, indicative of an annual growth pattern, although variation within the populations of both species was apparent. Age estimates varied from 1 to 6 years for G. braueri (40 to 139 mm standard length; L S ) and from 0 to 2 years for K. anderssoni (26 to 70 mm L S ). Length‐at‐age data were broadly consistent with population cohort parameters identified in concurrent length‐frequency data from the region for both species. The estimated values of von Bertalanffy growth curves for G. braueri were L ∞ = 133.22 mm, k = 0.29 year −1 and t 0 = − 0.21 year and the values for K. anderssoni were L ∞ = 68.60 mm, k = 0.71 year −1 and t 0 = − 0.49 year. There were no significant ( P > 0.05) differences in growth between sexes for either species, suggesting that males and females have similar growth and development trajectories in the Scotia Sea. A positive allometric relationship between L S and wet mass was found for each species, as well as a significant ( P < 0.0001) linear relationship between otolith size and L S . Growth performance ( Ф ′) was similar between the two species and congruent with other myctophid species across the Southern Ocean. This study provides important parameters for future Southern Ocean ecosystem studies in a resource management context. Article in Journal/Newspaper Scotia Sea Southern Ocean Wiley Online Library (via Crossref) Scotia Sea Southern Ocean Journal of Fish Biology 96 2 364 377 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Saunders, Ryan A. Lourenço, Silvia Vieira, Rui P. Collins, Martin A. Assis, Carlos A. Xavier, Jose C. Age and growth of Brauer's lanternfish <scp> Gymnoscopelus braueri </scp> and rhombic lanternfish <scp> Krefftichthys anderssoni </scp> (Family Myctophidae) in the Scotia Sea, Southern Ocean |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract This study examines age and growth of Brauer's lanternfish Gymnoscopelus braueri and rhombic lanternfish Krefftichthys anderssoni from the Scotia Sea in the Southern Ocean, through the analysis of annual growth increments deposited on sagittal otoliths. Otolith pairs from 177 G. braueri and 118 K. anderssoni were collected in different seasons from the region between 2004 and 2009. Otolith‐edge analysis suggested a seasonal change in opaque and hyaline depositions, indicative of an annual growth pattern, although variation within the populations of both species was apparent. Age estimates varied from 1 to 6 years for G. braueri (40 to 139 mm standard length; L S ) and from 0 to 2 years for K. anderssoni (26 to 70 mm L S ). Length‐at‐age data were broadly consistent with population cohort parameters identified in concurrent length‐frequency data from the region for both species. The estimated values of von Bertalanffy growth curves for G. braueri were L ∞ = 133.22 mm, k = 0.29 year −1 and t 0 = − 0.21 year and the values for K. anderssoni were L ∞ = 68.60 mm, k = 0.71 year −1 and t 0 = − 0.49 year. There were no significant ( P > 0.05) differences in growth between sexes for either species, suggesting that males and females have similar growth and development trajectories in the Scotia Sea. A positive allometric relationship between L S and wet mass was found for each species, as well as a significant ( P < 0.0001) linear relationship between otolith size and L S . Growth performance ( Ф ′) was similar between the two species and congruent with other myctophid species across the Southern Ocean. This study provides important parameters for future Southern Ocean ecosystem studies in a resource management context. |
format |
Article in Journal/Newspaper |
author |
Saunders, Ryan A. Lourenço, Silvia Vieira, Rui P. Collins, Martin A. Assis, Carlos A. Xavier, Jose C. |
author_facet |
Saunders, Ryan A. Lourenço, Silvia Vieira, Rui P. Collins, Martin A. Assis, Carlos A. Xavier, Jose C. |
author_sort |
Saunders, Ryan A. |
title |
Age and growth of Brauer's lanternfish <scp> Gymnoscopelus braueri </scp> and rhombic lanternfish <scp> Krefftichthys anderssoni </scp> (Family Myctophidae) in the Scotia Sea, Southern Ocean |
title_short |
Age and growth of Brauer's lanternfish <scp> Gymnoscopelus braueri </scp> and rhombic lanternfish <scp> Krefftichthys anderssoni </scp> (Family Myctophidae) in the Scotia Sea, Southern Ocean |
title_full |
Age and growth of Brauer's lanternfish <scp> Gymnoscopelus braueri </scp> and rhombic lanternfish <scp> Krefftichthys anderssoni </scp> (Family Myctophidae) in the Scotia Sea, Southern Ocean |
title_fullStr |
Age and growth of Brauer's lanternfish <scp> Gymnoscopelus braueri </scp> and rhombic lanternfish <scp> Krefftichthys anderssoni </scp> (Family Myctophidae) in the Scotia Sea, Southern Ocean |
title_full_unstemmed |
Age and growth of Brauer's lanternfish <scp> Gymnoscopelus braueri </scp> and rhombic lanternfish <scp> Krefftichthys anderssoni </scp> (Family Myctophidae) in the Scotia Sea, Southern Ocean |
title_sort |
age and growth of brauer's lanternfish <scp> gymnoscopelus braueri </scp> and rhombic lanternfish <scp> krefftichthys anderssoni </scp> (family myctophidae) in the scotia sea, southern ocean |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/jfb.14206 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14206 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14206 |
geographic |
Scotia Sea Southern Ocean |
geographic_facet |
Scotia Sea Southern Ocean |
genre |
Scotia Sea Southern Ocean |
genre_facet |
Scotia Sea Southern Ocean |
op_source |
Journal of Fish Biology volume 96, issue 2, page 364-377 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfb.14206 |
container_title |
Journal of Fish Biology |
container_volume |
96 |
container_issue |
2 |
container_start_page |
364 |
op_container_end_page |
377 |
_version_ |
1784255632102129664 |