Seasonal variability of fecundity and spawning dynamics of Baltic sprat

11 páginas, 11 figuras, 5 tablas.-- Preprint

Detalhes bibliográficos
Autores: Haslob, H., Rábade, Sonia, Saborido-Rey, Fran
Formato: artículo
Fecha de publicación:2013
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/65828
Acesso em linha:http://hdl.handle.net/10261/65828
Access Level:acceso abierto
Palavra-chave:Batch fecundity
Oocyte
Atresia
Spawning dynamics
Sprattus sprattus
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spelling Seasonal variability of fecundity and spawning dynamics of Baltic spratHaslob, H.Rábade, SoniaSaborido-Rey, FranBatch fecundityOocyteAtresiaSpawning dynamicsSprattus sprattus11 páginas, 11 figuras, 5 tablas.-- PreprintSeasonal variability in fecundity has been observed in a number of marine fishes and is important towards understanding the reproductive potential of a fish stock. However, the seasonal dynamics of egg production of Baltic sprat (Sprattus sprattus balticus S) have not been well described to date. We present data on the timing of spawning, and the seasonal variability in batch fecundity, number of developing oocytes, oocyte dry weight, spawning fraction, fish condition and atresia for this species in the Bornholm Basin, Baltic Sea. Histological techniques in combination with image analysis were applied to investigate those variables based upon material sampled in 2005 and 2008. Sprat were reported to be in spawning condition from January to June in each year plus in 2008 signs of ovarian maturation were also observed in November. Relative batch fecundity was found to vary two-fold with 85 eggs g−1 ovary free body weight observed early in the spawning season (January 2005) and 165 eggs g−1 ovary free body weight late in the spawning season (June 2008). Variability in batch fecundity during peak spawning was rather low. A seasonal decrease in oocyte dry weight was related to an increase in batch fecundity. Spawning fraction varied over the course of the spawning period with values ranging from 0.29 in March to 0.18 in June. Stereometric analyses confirmed the indeterminate fecundity of Baltic sprat. Prevalence of atresia was low during peak spawning in April to June (1.0–4.0%) but considerably higher during the early spawning period in March (16.4%) and highest in November (38.5%). Female sprat condition was low during the spawning period and increased sharply after spawning ceased. Our study provides a better understanding of fecundity and spawning dynamics of Baltic sprat which will aid to improve the assessment of reproductive potential of this ecologically and economically important fish species.This study was partly conducted during a Short Term Scientific Mission (STSM) at the Institute of Marine Research Vigo, Spain (IIM-CSIC) supported by the COST action Fish Reproduction and Fisheries (FRESH, FA0601). This research was also supported by the German Science Foundation (DFG) cluster project RECONN2 #CL126/3-3 (Resolving Trophodynamic Consequences of Climate Change) within the priority program 1162 AQUASHIFT.Peer reviewedElsevier201320132013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/65828reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.fishres.2012.08.002info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/658282026-05-22T06:33:51Z
dc.title.none.fl_str_mv Seasonal variability of fecundity and spawning dynamics of Baltic sprat
title Seasonal variability of fecundity and spawning dynamics of Baltic sprat
spellingShingle Seasonal variability of fecundity and spawning dynamics of Baltic sprat
Haslob, H.
Batch fecundity
Oocyte
Atresia
Spawning dynamics
Sprattus sprattus
title_short Seasonal variability of fecundity and spawning dynamics of Baltic sprat
title_full Seasonal variability of fecundity and spawning dynamics of Baltic sprat
title_fullStr Seasonal variability of fecundity and spawning dynamics of Baltic sprat
title_full_unstemmed Seasonal variability of fecundity and spawning dynamics of Baltic sprat
title_sort Seasonal variability of fecundity and spawning dynamics of Baltic sprat
dc.creator.none.fl_str_mv Haslob, H.
Rábade, Sonia
Saborido-Rey, Fran
author Haslob, H.
author_facet Haslob, H.
Rábade, Sonia
Saborido-Rey, Fran
author_role author
author2 Rábade, Sonia
Saborido-Rey, Fran
author2_role author
author
dc.subject.none.fl_str_mv Batch fecundity
Oocyte
Atresia
Spawning dynamics
Sprattus sprattus
topic Batch fecundity
Oocyte
Atresia
Spawning dynamics
Sprattus sprattus
description 11 páginas, 11 figuras, 5 tablas.-- Preprint
publishDate 2013
dc.date.none.fl_str_mv 2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/65828
url http://hdl.handle.net/10261/65828
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.fishres.2012.08.002
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869418258317180928
score 15,812429

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