Early life history of daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters
The daubed shanny (Leptoclinus maculatus, Family Stichaeidae) is considered to be an ecologically significant species in the arctic waters of Norway because of high abundance and the unique energy storage abilities of its postlarvae. Both postlarvae and adults are found in relative large abundances...
Published in: | Marine Biodiversity |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2011
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Online Access: | https://hdl.handle.net/10037/4014 https://doi.org/10.1007/s12526-010-0079-3 |
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ftunivtroemsoe:oai:munin.uit.no:10037/4014 2023-05-15T14:59:46+02:00 Early life history of daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters Ottesen, Camilla Hop, Haakon Christiansen, Jørgen Schou Falk-Petersen, Stig 2011 https://hdl.handle.net/10037/4014 https://doi.org/10.1007/s12526-010-0079-3 eng eng Springer Marine Biodiversity 41(2011) s. 383-394 FRIDAID 844614 doi:10.1007/s12526-010-0079-3 1867-1616 https://hdl.handle.net/10037/4014 URN:NBN:no-uit_munin_3735 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 Journal article Tidsskriftartikkel Peer reviewed 2011 ftunivtroemsoe https://doi.org/10.1007/s12526-010-0079-3 2021-06-25T17:53:15Z The daubed shanny (Leptoclinus maculatus, Family Stichaeidae) is considered to be an ecologically significant species in the arctic waters of Norway because of high abundance and the unique energy storage abilities of its postlarvae. Both postlarvae and adults are found in relative large abundances in Svalbard fjords as well as along the ice edge of north-east Svalbard, even at sub-zero temperatures. The postlarva feeds primarily on Calanus spp. and stores lipids from this high-energy diet in a unique lipid sac on the ventral side of its body. This energy storage enables it to survive pelagically during the arctic winters when food is scarce. The postlarvae are pelagic for the first 2–3 years of their life before they descend to the bottom and transform to a benthic mode of life. Our results indicated that this transition takes place when the postlarva reach about 80 mm in length and an age of 3 years. The relative size of the lipid sac, as well as changes in the morphology of the postlarvae, can be used as indices of the transition from pelagic postlarva to benthic juvenile. The lipid sac index (% of gutted weight) was negatively correlated with length and age and started to decrease when the postlarva transformed to a benthic lifestyle. At this point, the growth in terms of the length–weight relationship shifted from a positive asymptotic growth to a negative asymptotic growth, reflecting the changes in the lipid sac index, while several changes in morphological traits took place. The benthic mode of early juveniles is largely influenced by environmental conditions and prey abundance, since the fish is depleted from their energy stores and need to rapidly switch to benthic prey in their new habitat. In conclusion, this is the first study on the early life history of the daubed shanny and it presents evidence that the first 5 years in the life of this species is divided in two distinct parts, one pelagic and one benthic, in which postlarvae display unique growth and morphological traits adapted to the challenges of these arctic marine environments. Article in Journal/Newspaper Arctic Daubed shanny Leptoclinus maculatus Svalbard University of Tromsø: Munin Open Research Archive Arctic Svalbard Norway Marine Biodiversity 41 3 383 394 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 Ottesen, Camilla Hop, Haakon Christiansen, Jørgen Schou Falk-Petersen, Stig Early life history of daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 |
description |
The daubed shanny (Leptoclinus maculatus, Family Stichaeidae) is considered to be an ecologically significant species in the arctic waters of Norway because of high abundance and the unique energy storage abilities of its postlarvae. Both postlarvae and adults are found in relative large abundances in Svalbard fjords as well as along the ice edge of north-east Svalbard, even at sub-zero temperatures. The postlarva feeds primarily on Calanus spp. and stores lipids from this high-energy diet in a unique lipid sac on the ventral side of its body. This energy storage enables it to survive pelagically during the arctic winters when food is scarce. The postlarvae are pelagic for the first 2–3 years of their life before they descend to the bottom and transform to a benthic mode of life. Our results indicated that this transition takes place when the postlarva reach about 80 mm in length and an age of 3 years. The relative size of the lipid sac, as well as changes in the morphology of the postlarvae, can be used as indices of the transition from pelagic postlarva to benthic juvenile. The lipid sac index (% of gutted weight) was negatively correlated with length and age and started to decrease when the postlarva transformed to a benthic lifestyle. At this point, the growth in terms of the length–weight relationship shifted from a positive asymptotic growth to a negative asymptotic growth, reflecting the changes in the lipid sac index, while several changes in morphological traits took place. The benthic mode of early juveniles is largely influenced by environmental conditions and prey abundance, since the fish is depleted from their energy stores and need to rapidly switch to benthic prey in their new habitat. In conclusion, this is the first study on the early life history of the daubed shanny and it presents evidence that the first 5 years in the life of this species is divided in two distinct parts, one pelagic and one benthic, in which postlarvae display unique growth and morphological traits adapted to the challenges of these arctic marine environments. |
format |
Article in Journal/Newspaper |
author |
Ottesen, Camilla Hop, Haakon Christiansen, Jørgen Schou Falk-Petersen, Stig |
author_facet |
Ottesen, Camilla Hop, Haakon Christiansen, Jørgen Schou Falk-Petersen, Stig |
author_sort |
Ottesen, Camilla |
title |
Early life history of daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters |
title_short |
Early life history of daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters |
title_full |
Early life history of daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters |
title_fullStr |
Early life history of daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters |
title_full_unstemmed |
Early life history of daubed shanny (Teleostei: Leptoclinus maculatus) in Svalbard waters |
title_sort |
early life history of daubed shanny (teleostei: leptoclinus maculatus) in svalbard waters |
publisher |
Springer |
publishDate |
2011 |
url |
https://hdl.handle.net/10037/4014 https://doi.org/10.1007/s12526-010-0079-3 |
geographic |
Arctic Svalbard Norway |
geographic_facet |
Arctic Svalbard Norway |
genre |
Arctic Daubed shanny Leptoclinus maculatus Svalbard |
genre_facet |
Arctic Daubed shanny Leptoclinus maculatus Svalbard |
op_relation |
Marine Biodiversity 41(2011) s. 383-394 FRIDAID 844614 doi:10.1007/s12526-010-0079-3 1867-1616 https://hdl.handle.net/10037/4014 URN:NBN:no-uit_munin_3735 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1007/s12526-010-0079-3 |
container_title |
Marine Biodiversity |
container_volume |
41 |
container_issue |
3 |
container_start_page |
383 |
op_container_end_page |
394 |
_version_ |
1766331894203416576 |