Depth and Seasonal Effects on the Settlement Density of Two Mussel Species (Perna Perna and Mytilus Galloprovincialis) in Offshore, Agadir (Morocco)
A study of spat settlement of two mussel species was carried out in Agadir area on the North Atlantic Coast, between Jan 2002 and Jan 2003. The preferred depth of settlement and settlement period of both species were monitored on collectors suspended in offshore at three different depths (1, 5, 10 m...
Published in: | European Scientific Journal, ESJ |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
European Scientific Institute, ESI
2018
|
Subjects: | |
Online Access: | https://eujournal.org/index.php/esj/article/view/10786 https://doi.org/10.19044/esj.2018.v14n12p229 |
id |
ftjeuj:oai:ojs.pkp.sfu.ca:article/10786 |
---|---|
record_format |
openpolar |
spelling |
ftjeuj:oai:ojs.pkp.sfu.ca:article/10786 2023-06-06T11:57:17+02:00 Depth and Seasonal Effects on the Settlement Density of Two Mussel Species (Perna Perna and Mytilus Galloprovincialis) in Offshore, Agadir (Morocco) Halla, Mohamed Id Kassila, Jawad Chattou, El Mustafa Ait Ouaggajou, Yassine El Aamri, Fatima Benbani, Abdelbasset Nhhala, Hassan 2018-04-30 application/pdf https://eujournal.org/index.php/esj/article/view/10786 https://doi.org/10.19044/esj.2018.v14n12p229 eng eng European Scientific Institute, ESI https://eujournal.org/index.php/esj/article/view/10786/10326 10.19044/esj.2018.v14n12p229 https://eujournal.org/index.php/esj/article/view/10786 doi:10.19044/esj.2018.v14n12p229 Copyright (c) 2018 European Scientific Journal, ESJ European Scientific Journal, ESJ; Vol 14 No 12 (2018): ESJ April Edition; 229 Revista Científica Europea; Vol. 14 Núm. 12 (2018): ESJ April Edition; 229 1857-7431 1857-7881 10.19044/esj.2018.v14n12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2018 ftjeuj https://doi.org/10.19044/esj.2018.v14n12p22910.19044/esj.2018.v14n12 2023-04-16T08:36:58Z A study of spat settlement of two mussel species was carried out in Agadir area on the North Atlantic Coast, between Jan 2002 and Jan 2003. The preferred depth of settlement and settlement period of both species were monitored on collectors suspended in offshore at three different depths (1, 5, 10 m). For Perna perna, the effect of season on settlement was consistent, with relatively higher settlement both in spring (286-462 spats.m-1 ) and in summer (406-594 spats.m-1 ). Similar abundances of settlers were found at 1 m and 5 m depth whatever the season, which suggests a homogeneous distribution of settlers of P. perna in the first 5 m of the sea water. For Mytilus galloprovincialis, the settlement was less patchy in time in regard to P. perna (ρ<0.05). Thus, the settlement was continuous from spring to autumn until 10 m depth. The filamentous structures (laces in polypropylene) used in this study are often designed to enhance the amount of settlers, however, the settlement densities of both species were very low. Consequently, the results suggest that larval supply has been the limiting factor in the settlement success, but not the lack of suitable substrates. Moreover, the study area has poor spat falls and seems to be not suitable for collection of mussel spat. Article in Journal/Newspaper North Atlantic European Scientific Journal (European Scientific Institute) European Scientific Journal, ESJ 14 12 229 |
institution |
Open Polar |
collection |
European Scientific Journal (European Scientific Institute) |
op_collection_id |
ftjeuj |
language |
English |
description |
A study of spat settlement of two mussel species was carried out in Agadir area on the North Atlantic Coast, between Jan 2002 and Jan 2003. The preferred depth of settlement and settlement period of both species were monitored on collectors suspended in offshore at three different depths (1, 5, 10 m). For Perna perna, the effect of season on settlement was consistent, with relatively higher settlement both in spring (286-462 spats.m-1 ) and in summer (406-594 spats.m-1 ). Similar abundances of settlers were found at 1 m and 5 m depth whatever the season, which suggests a homogeneous distribution of settlers of P. perna in the first 5 m of the sea water. For Mytilus galloprovincialis, the settlement was less patchy in time in regard to P. perna (ρ<0.05). Thus, the settlement was continuous from spring to autumn until 10 m depth. The filamentous structures (laces in polypropylene) used in this study are often designed to enhance the amount of settlers, however, the settlement densities of both species were very low. Consequently, the results suggest that larval supply has been the limiting factor in the settlement success, but not the lack of suitable substrates. Moreover, the study area has poor spat falls and seems to be not suitable for collection of mussel spat. |
format |
Article in Journal/Newspaper |
author |
Halla, Mohamed Id Kassila, Jawad Chattou, El Mustafa Ait Ouaggajou, Yassine El Aamri, Fatima Benbani, Abdelbasset Nhhala, Hassan |
spellingShingle |
Halla, Mohamed Id Kassila, Jawad Chattou, El Mustafa Ait Ouaggajou, Yassine El Aamri, Fatima Benbani, Abdelbasset Nhhala, Hassan Depth and Seasonal Effects on the Settlement Density of Two Mussel Species (Perna Perna and Mytilus Galloprovincialis) in Offshore, Agadir (Morocco) |
author_facet |
Halla, Mohamed Id Kassila, Jawad Chattou, El Mustafa Ait Ouaggajou, Yassine El Aamri, Fatima Benbani, Abdelbasset Nhhala, Hassan |
author_sort |
Halla, Mohamed Id |
title |
Depth and Seasonal Effects on the Settlement Density of Two Mussel Species (Perna Perna and Mytilus Galloprovincialis) in Offshore, Agadir (Morocco) |
title_short |
Depth and Seasonal Effects on the Settlement Density of Two Mussel Species (Perna Perna and Mytilus Galloprovincialis) in Offshore, Agadir (Morocco) |
title_full |
Depth and Seasonal Effects on the Settlement Density of Two Mussel Species (Perna Perna and Mytilus Galloprovincialis) in Offshore, Agadir (Morocco) |
title_fullStr |
Depth and Seasonal Effects on the Settlement Density of Two Mussel Species (Perna Perna and Mytilus Galloprovincialis) in Offshore, Agadir (Morocco) |
title_full_unstemmed |
Depth and Seasonal Effects on the Settlement Density of Two Mussel Species (Perna Perna and Mytilus Galloprovincialis) in Offshore, Agadir (Morocco) |
title_sort |
depth and seasonal effects on the settlement density of two mussel species (perna perna and mytilus galloprovincialis) in offshore, agadir (morocco) |
publisher |
European Scientific Institute, ESI |
publishDate |
2018 |
url |
https://eujournal.org/index.php/esj/article/view/10786 https://doi.org/10.19044/esj.2018.v14n12p229 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
European Scientific Journal, ESJ; Vol 14 No 12 (2018): ESJ April Edition; 229 Revista Científica Europea; Vol. 14 Núm. 12 (2018): ESJ April Edition; 229 1857-7431 1857-7881 10.19044/esj.2018.v14n12 |
op_relation |
https://eujournal.org/index.php/esj/article/view/10786/10326 10.19044/esj.2018.v14n12p229 https://eujournal.org/index.php/esj/article/view/10786 doi:10.19044/esj.2018.v14n12p229 |
op_rights |
Copyright (c) 2018 European Scientific Journal, ESJ |
op_doi |
https://doi.org/10.19044/esj.2018.v14n12p22910.19044/esj.2018.v14n12 |
container_title |
European Scientific Journal, ESJ |
container_volume |
14 |
container_issue |
12 |
container_start_page |
229 |
_version_ |
1767965368133877760 |