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Opportunities for the development of seaweed farming as a supplementary income for small-scale fishermen in Nador lagoon: Experimental cultivations of Gracilaria gracilis (Stackho

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Last updated: 01 Jan 2025

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Abstract

The feasibility of growing red seaweed, Gracilaria gracilis (Gigartinales, Rhodophyta) in off-bottom and floating longline systems was investigated in Bouareg location. The weight gains of G. gracilis in off-bottom cultures tested in winter, were low. The lowest daily growth rate (DGR) was recorded in sheet-lines (1.91 % day-1, p < 0.01) while the highest's RGR were observed in net-lines and ropes-lines (2.72 and 2.77 % day-1 respectively, p < 0.01). Plants of G. gracilis grew well in the floating longline culture tested at spring. The weight growth rates ranged between 2.54 and 4.26 % day-1. The highest growth rate in Nador lagoon was observed in treatment stocked with 0.6 kg m-2. The high stocking density (0.8 kg m-2) leaded to low growth most probably due to stress on the seaweed when competing for space and resources. Over a 60-day cycle, the harvest of G. gracilis cultivated on floating longline system in Nador lagoon was estimated at about 101 t FWT ha-1 year-1. With 8:1 as wet to dry ratio, the production yield per cropping was estimated at 3,156 kg (DW) per ha. However, the total sales per year was estimated at about $ 6,564 per ha.

DOI

10.21608/maj.2022.5857.1003

Keywords

Gracilaria gracilis, culture, Nador Lagoon, Income, Fishermen

Authors

First Name

Jawad

Last Name

Kassila

MiddleName

-

Affiliation

Aquaculture Department, INRH, Morocco

Email

kassilajawad@yahoo.com

City

M&amp;#039;diq

Orcid

0000-0001-7419-5654

First Name

Hassan

Last Name

Nhhala

MiddleName

-

Affiliation

Aquaculture Department, INRH, Morocco

Email

nhhala@gmail.com

City

-

Orcid

0000-0003-4938-9881

First Name

Thierry

Last Name

Givernaud

MiddleName

-

Affiliation

Stecof Co., Kenitra

Email

stecof.maroc@gmail.com

City

Kenitra

Orcid

-

First Name

El mahdi

Last Name

mansouri

MiddleName

-

Affiliation

Agence Nationale de D&eacute;veloppement de l&rsquo;Aquaculture (ANDA) , Rabat, Morocco

Email

mr.elmahdi.mansouri@gmail.com

City

Rabat

Orcid

-

First Name

Outmane

Last Name

yazami

MiddleName

-

Affiliation

Dep., of Sciences Faculty of Polydisciplinaire, Larache, Morocco

Email

outmane.yazami@gmail.com

City

Casablanca

Orcid

-

First Name

Azzedine

Last Name

Abrehouche

MiddleName

-

Affiliation

Aquaculture Department, INRH, Morocco

Email

abrehouche@inrh.ma

City

M&#039;diq

Orcid

-

First Name

Abdelhakim

Last Name

mesfioui

MiddleName

-

Affiliation

Centre R&eacute;gional de Nador, INRH, Nador, Morocco

Email

hmesfioui@gmail.com

City

Nador

Orcid

-

First Name

Mohamed

Last Name

Idhalla

MiddleName

-

Affiliation

Aquaculture Department, INRH, Morocco

Email

idhallamohamed@gmail.com

City

Casablanca

Orcid

0000-0001-6246-9021

Volume

9

Article Issue

1

Related Issue

37673

Issue Date

2022-11-01

Receive Date

2018-10-25

Publish Date

2022-11-01

Page Start

46

Page End

57

Print ISSN

1687-7616

Online ISSN

1687-7187

Article File

MAJ_Volume 9_Issue 1_Pages 46-57.pdf

PDF . 670.5kB

Link

https://maj.journals.ekb.eg/article_270271.html

Detail API

https://maj.journals.ekb.eg/service?article_code=270271

Order

5

Type

Original Article

Type Code

209

Publication Type

Journal

Publication Title

Mediterranean Aquaculture Journal

Publication Link

https://maj.journals.ekb.eg/

MainTitle

Opportunities for the development of seaweed farming as a supplementary income for small-scale fishermen in Nador lagoon: Experimental cultivations of Gracilaria gracilis (Stackhouse)

Details

Type

Article

Created At

22 Jan 2023