Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)

The purpose of this study was to estimate the natural mortality of embryonic and larval stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa between Cape Barbas (22°30'N) and Cape Bojador (26°N) during November 2007. Using planktonic data that were fitted...

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Autores principales:	Abdelouahab,Hinde, Berraho,Amina, Ramzi,Azeddine, Ettahiri,Omar, Errhif,Ahmed, Tojo,Naoki
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2016
Materias:	Sardine eggs larvae mortality Northwest Africa
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572016000300001
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id	oai:scielo:S0718-19572016000300001
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spelling	oai:scielo:S0718-195720160003000012017-01-05Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)Abdelouahab,HindeBerraho,AminaRamzi,AzeddineEttahiri,OmarErrhif,AhmedTojo,Naoki Sardine eggs larvae mortality Northwest Africa The purpose of this study was to estimate the natural mortality of embryonic and larval stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa between Cape Barbas (22°30'N) and Cape Bojador (26°N) during November 2007. Using planktonic data that were fitted to an exponential model, sardine eggs hourly mortality rate (Z) was estimated in 0.07 (per hour) corresponding to 83.5% of daily mortality rate. On the other hand, for sardine larvae, Z was estimated in 0.01 (per hour), corresponding to a daily mortality rate of 21.4%. Southward and offshore transport can be considered as causes of variability in drifting scenario and survival condition of sardine larvae. Additional analyses of time series of the early life history data of sardines and future adaptive monitoring should be conducted to better manage sardine fisheries in Morocco.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.51 n.3 20162016-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572016000300001en10.4067/S0718-19572016000300001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Sardine eggs larvae mortality Northwest Africa
spellingShingle	Sardine eggs larvae mortality Northwest Africa Abdelouahab,Hinde Berraho,Amina Ramzi,Azeddine Ettahiri,Omar Errhif,Ahmed Tojo,Naoki Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)
description	The purpose of this study was to estimate the natural mortality of embryonic and larval stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa between Cape Barbas (22°30'N) and Cape Bojador (26°N) during November 2007. Using planktonic data that were fitted to an exponential model, sardine eggs hourly mortality rate (Z) was estimated in 0.07 (per hour) corresponding to 83.5% of daily mortality rate. On the other hand, for sardine larvae, Z was estimated in 0.01 (per hour), corresponding to a daily mortality rate of 21.4%. Southward and offshore transport can be considered as causes of variability in drifting scenario and survival condition of sardine larvae. Additional analyses of time series of the early life history data of sardines and future adaptive monitoring should be conducted to better manage sardine fisheries in Morocco.
author	Abdelouahab,Hinde Berraho,Amina Ramzi,Azeddine Ettahiri,Omar Errhif,Ahmed Tojo,Naoki
author_facet	Abdelouahab,Hinde Berraho,Amina Ramzi,Azeddine Ettahiri,Omar Errhif,Ahmed Tojo,Naoki
author_sort	Abdelouahab,Hinde
title	Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)
title_short	Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)
title_full	Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)
title_fullStr	Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)
title_full_unstemmed	Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)
title_sort	mortality of early life stages of european pilchard sardina pilchardus along the atlantic coast of northwest africa (22°30'n-26°n)
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572016000300001
work_keys_str_mv	AT abdelouahabhinde mortalityofearlylifestagesofeuropeanpilchardsardinapilchardusalongtheatlanticcoastofnorthwestafrica2230n26n AT berrahoamina mortalityofearlylifestagesofeuropeanpilchardsardinapilchardusalongtheatlanticcoastofnorthwestafrica2230n26n AT ramziazeddine mortalityofearlylifestagesofeuropeanpilchardsardinapilchardusalongtheatlanticcoastofnorthwestafrica2230n26n AT ettahiriomar mortalityofearlylifestagesofeuropeanpilchardsardinapilchardusalongtheatlanticcoastofnorthwestafrica2230n26n AT errhifahmed mortalityofearlylifestagesofeuropeanpilchardsardinapilchardusalongtheatlanticcoastofnorthwestafrica2230n26n AT tojonaoki mortalityofearlylifestagesofeuropeanpilchardsardinapilchardusalongtheatlanticcoastofnorthwestafrica2230n26n
_version_	1714202362162184192

Mortality of early life stages of European pilchard Sardina pilchardus along the Atlantic Coast of Northwest Africa (22°30'N-26°N)

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