Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda)
As a general trend in the life history of marine organisms, species inhabiting cold waters have reduced growth rates and increased lifespans. Studies based on egg sizes and brooding times of deep-sea and polar octopods support this hypothesis, but empirical data on growth are still scarce. To test t...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PLoS
2019
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/2726821 https://doi.org/10.1371/journal.pone.0219694 |
id |
ftunivbergen:oai:bora.uib.no:11250/2726821 |
---|---|
record_format |
openpolar |
spelling |
ftunivbergen:oai:bora.uib.no:11250/2726821 2023-05-15T13:58:00+02:00 Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda) Schwarz, Richard Hoving, Henk-Jan Noever, Christoph Piatkowski, Uwe 2019-07-11 application/pdf https://hdl.handle.net/11250/2726821 https://doi.org/10.1371/journal.pone.0219694 eng eng PLoS urn:issn:1932-6203 https://hdl.handle.net/11250/2726821 https://doi.org/10.1371/journal.pone.0219694 cristin:1797232 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2019 Schwarz et al. e0219694 PLOS ONE 14 7 Journal article Peer reviewed 2019 ftunivbergen https://doi.org/10.1371/journal.pone.0219694 2023-03-14T17:42:54Z As a general trend in the life history of marine organisms, species inhabiting cold waters have reduced growth rates and increased lifespans. Studies based on egg sizes and brooding times of deep-sea and polar octopods support this hypothesis, but empirical data on growth are still scarce. To test the hypothesis that octopods inhabiting cold waters (< 3°C) live longer than temperate and warm water species, this study investigated size-at-age, maturation and growth rates in incirrate Antarctic octopods. Octopod age was estimated via the interpretation and quantification of beak growth increments, which in shallow water octopods have been validated to be formed on a daily basis. Specimens from the families Megaleledonidae (Adelieledone spp., Pareledone spp. and Megaleledone setebos) and Enteroctopodidae (Muusoctopus rigbyae) were collected on the shelf and slope regions off the Antarctic Peninsula during a cruise in 2012. Examined specimens included early juveniles to animals in advanced maturity. The total number of growth increments ranged from 192–599 in Pareledone aequipapillae (body mass [BM] 2–109 g), 182–431 in Pareledone charcoti (BM 5–124 g), 98–906 in M. setebos (BM 10–6000 g) and 207–425 in M. rigbyae (BM 24–256 g). After the cruise, eleven specimens of P. charcoti were kept alive in captivity for more than 12 months and these animals had 219–364 growth increments, suggesting that increment formation in this species takes longer than one day. The complex population structure (size, age and maturity range) of the specimens that were captured during a relatively short time, the number of beak increments quantified, and the preliminary validation observations indicate that Antarctic octopods do not deposit increments daily, and may have lifespans exceeding 3 years. These findings corroborate the general trend that cold water molluscs have a longer lifespan than their warm water relatives. publishedVersion Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Megaleledone Setebos University of Bergen: Bergen Open Research Archive (BORA-UiB) Antarctic Antarctic Peninsula The Antarctic PLOS ONE 14 7 e0219694 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
As a general trend in the life history of marine organisms, species inhabiting cold waters have reduced growth rates and increased lifespans. Studies based on egg sizes and brooding times of deep-sea and polar octopods support this hypothesis, but empirical data on growth are still scarce. To test the hypothesis that octopods inhabiting cold waters (< 3°C) live longer than temperate and warm water species, this study investigated size-at-age, maturation and growth rates in incirrate Antarctic octopods. Octopod age was estimated via the interpretation and quantification of beak growth increments, which in shallow water octopods have been validated to be formed on a daily basis. Specimens from the families Megaleledonidae (Adelieledone spp., Pareledone spp. and Megaleledone setebos) and Enteroctopodidae (Muusoctopus rigbyae) were collected on the shelf and slope regions off the Antarctic Peninsula during a cruise in 2012. Examined specimens included early juveniles to animals in advanced maturity. The total number of growth increments ranged from 192–599 in Pareledone aequipapillae (body mass [BM] 2–109 g), 182–431 in Pareledone charcoti (BM 5–124 g), 98–906 in M. setebos (BM 10–6000 g) and 207–425 in M. rigbyae (BM 24–256 g). After the cruise, eleven specimens of P. charcoti were kept alive in captivity for more than 12 months and these animals had 219–364 growth increments, suggesting that increment formation in this species takes longer than one day. The complex population structure (size, age and maturity range) of the specimens that were captured during a relatively short time, the number of beak increments quantified, and the preliminary validation observations indicate that Antarctic octopods do not deposit increments daily, and may have lifespans exceeding 3 years. These findings corroborate the general trend that cold water molluscs have a longer lifespan than their warm water relatives. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Schwarz, Richard Hoving, Henk-Jan Noever, Christoph Piatkowski, Uwe |
spellingShingle |
Schwarz, Richard Hoving, Henk-Jan Noever, Christoph Piatkowski, Uwe Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda) |
author_facet |
Schwarz, Richard Hoving, Henk-Jan Noever, Christoph Piatkowski, Uwe |
author_sort |
Schwarz, Richard |
title |
Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda) |
title_short |
Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda) |
title_full |
Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda) |
title_fullStr |
Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda) |
title_full_unstemmed |
Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda) |
title_sort |
life histories of antarctic incirrate octopods (cephalopoda: octopoda) |
publisher |
PLoS |
publishDate |
2019 |
url |
https://hdl.handle.net/11250/2726821 https://doi.org/10.1371/journal.pone.0219694 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Megaleledone Setebos |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Megaleledone Setebos |
op_source |
e0219694 PLOS ONE 14 7 |
op_relation |
urn:issn:1932-6203 https://hdl.handle.net/11250/2726821 https://doi.org/10.1371/journal.pone.0219694 cristin:1797232 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2019 Schwarz et al. |
op_doi |
https://doi.org/10.1371/journal.pone.0219694 |
container_title |
PLOS ONE |
container_volume |
14 |
container_issue |
7 |
container_start_page |
e0219694 |
_version_ |
1766265950307352576 |