IMPACT OF HATCH-DATE ON EARLY LIFE GROWTH AND SURVIVAL OF MUELLER’S PEARLSIDE (MAUROLICUS MUELLERI) LARVAE, AND LIFE-HISTORY CONSEQUENCES

Handle URI:
http://hdl.handle.net/10754/575657
Title:
IMPACT OF HATCH-DATE ON EARLY LIFE GROWTH AND SURVIVAL OF MUELLER’S PEARLSIDE (MAUROLICUS MUELLERI) LARVAE, AND LIFE-HISTORY CONSEQUENCES
Authors:
Folkvord, Arild; Gundersen, Geir; Albretsen, Jon; Asplin, Lars L; Kaartvedt, Stein ( 0000-0002-8793-2948 ) ; Giske, Jarl
Abstract:
Growth and survival of Maurolicus muelleri larvae in Herdlefjorden, Norway were investigated by daily otolith increment analysis. While high egg densities were generally observed throughout the spawning season, three cohorts each with a narrow window of hatching dates were identified. The first of these cohorts was characterized by low growth and poor morphometric condition and disappeared from the fjord during autumn. High resolution drift modeling indicated that Herdlefjorden had a net export of larvae and negligible import in the period cohort 1 disappeared. Yet, the advective loss rate of larvae was not considered high enough to explain the near complete disappearance of the first cohort. An otolith based growth chronology indicated that growth conditions in Herdlefjorden improved noticeably around mid-September, and remained favorable the following month. The analysis of daily otolith increments could thus be used to document within-season variability in larval growth and survival. The low and variable survival due to short term fluctuations in environmental conditions indicate that multiple batch spawning is an adequately evolved life history strategy for marine planktivorous fish such as M. muelleri.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
Canadian Science Publishing
Journal:
Canadian Journal of Fisheries and Aquatic Sciences
Issue Date:
11-Aug-2015
DOI:
10.1139/cjfas-2015-0040
Type:
Article
ISSN:
0706-652X; 1205-7533
Appears in Collections:
Articles; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorFolkvord, Arilden
dc.contributor.authorGundersen, Geiren
dc.contributor.authorAlbretsen, Jonen
dc.contributor.authorAsplin, Lars Len
dc.contributor.authorKaartvedt, Steinen
dc.contributor.authorGiske, Jarlen
dc.date.accessioned2015-08-24T08:35:11Zen
dc.date.available2015-08-24T08:35:11Zen
dc.date.issued2015-08-11en
dc.identifier.issn0706-652Xen
dc.identifier.issn1205-7533en
dc.identifier.doi10.1139/cjfas-2015-0040en
dc.identifier.urihttp://hdl.handle.net/10754/575657en
dc.description.abstractGrowth and survival of Maurolicus muelleri larvae in Herdlefjorden, Norway were investigated by daily otolith increment analysis. While high egg densities were generally observed throughout the spawning season, three cohorts each with a narrow window of hatching dates were identified. The first of these cohorts was characterized by low growth and poor morphometric condition and disappeared from the fjord during autumn. High resolution drift modeling indicated that Herdlefjorden had a net export of larvae and negligible import in the period cohort 1 disappeared. Yet, the advective loss rate of larvae was not considered high enough to explain the near complete disappearance of the first cohort. An otolith based growth chronology indicated that growth conditions in Herdlefjorden improved noticeably around mid-September, and remained favorable the following month. The analysis of daily otolith increments could thus be used to document within-season variability in larval growth and survival. The low and variable survival due to short term fluctuations in environmental conditions indicate that multiple batch spawning is an adequately evolved life history strategy for marine planktivorous fish such as M. muelleri.en
dc.publisherCanadian Science Publishingen
dc.titleIMPACT OF HATCH-DATE ON EARLY LIFE GROWTH AND SURVIVAL OF MUELLER’S PEARLSIDE (MAUROLICUS MUELLERI) LARVAE, AND LIFE-HISTORY CONSEQUENCESen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalCanadian Journal of Fisheries and Aquatic Sciencesen
kaust.authorKaartvedt, Steinen
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