Study of the growth of Octopus vulgaris in the Moroccan Mediterranean Sea by direct age estimation through the analysis of upper beaks
Beaks are one of the most important sclerochronological structures used to study the age and growth of cephalopods, in particular Octopus vulgaris Cuvier, 1797. The present study provides results of ageing of 128 O. vulgaris (56–239 mm dorsal mantle length, DML; 121–5974 g total weight, TW) collecte...
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| Veröffentlicht in: | Journal of the Marine Biological Association of the United Kingdom 2023, Vol.103, Article e33 |
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| creator | Faiki, Ahmed Chairi, Hicham Malouli Idrissi, Mohammed Bensbai, Jilali |
| description | Beaks are one of the most important sclerochronological structures used to study the age and growth of cephalopods, in particular Octopus vulgaris Cuvier, 1797. The present study provides results of ageing of 128 O. vulgaris (56–239 mm dorsal mantle length, DML; 121–5974 g total weight, TW) collected in the southern Moroccan Mediterranean coasts between Fnideq and Jebha. The number of increments corresponding to the age (days since hatching) varied from 137–368 in females and from 129–382 in males. There was a significant correlation between beak and somatic growth. The correlation coefficients of the growth curves DML-Age and TW-Age were similar for both power and exponential models: DML = 0.185Age1.188 (R2 = 0.547), DML = 35.933e0.005Age (R2 = 0.546), TW = 0.00002Age3.260 (R2 = 0.532), TW = 29.56e0.014Age (R2 = 0.541). The average width of the increments was similar between females and males. It varied significantly with season and stage of sexual maturity. Comparison of the growth curve with those estimated by other authors showed that Moroccan Mediterranean O. vulgaris grew faster than that of Sardinia (Italy) and slower than that of the Mauritanian coast. |
| doi_str_mv | 10.1017/S0025315423000218 |
| format | Article |
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The present study provides results of ageing of 128 O. vulgaris (56–239 mm dorsal mantle length, DML; 121–5974 g total weight, TW) collected in the southern Moroccan Mediterranean coasts between Fnideq and Jebha. The number of increments corresponding to the age (days since hatching) varied from 137–368 in females and from 129–382 in males. There was a significant correlation between beak and somatic growth. The correlation coefficients of the growth curves DML-Age and TW-Age were similar for both power and exponential models: DML = 0.185Age1.188 (R2 = 0.547), DML = 35.933e0.005Age (R2 = 0.546), TW = 0.00002Age3.260 (R2 = 0.532), TW = 29.56e0.014Age (R2 = 0.541). The average width of the increments was similar between females and males. It varied significantly with season and stage of sexual maturity. Comparison of the growth curve with those estimated by other authors showed that Moroccan Mediterranean O. vulgaris grew faster than that of Sardinia (Italy) and slower than that of the Mauritanian coast.</description><identifier>ISSN: 0025-3154</identifier><identifier>EISSN: 1469-7769</identifier><identifier>DOI: 10.1017/S0025315423000218</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Age ; Age determination ; Beak ; Beaks ; Cephalopods ; Chronology ; Coefficients ; Correlation coefficient ; Correlation coefficients ; Females ; Growth curves ; Hatching ; Hypotheses ; Males ; Marine molluscs ; Octopus vulgaris ; Octopuses ; Sexual maturity ; Software</subject><ispartof>Journal of the Marine Biological Association of the United Kingdom, 2023, Vol.103, Article e33</ispartof><rights>Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of Marine Biological Association of the United Kingdom</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c269t-a36dc986dfe50fcf4c453071eefe266d4437687876ac9957349ba4c904bd50673</cites><orcidid>0000-0002-0795-1891</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.cambridge.org/core/product/identifier/S0025315423000218/type/journal_article$$EHTML$$P50$$Gcambridge$$H</linktohtml><link.rule.ids>164,314,776,780,4010,27900,27901,27902,55603</link.rule.ids></links><search><creatorcontrib>Faiki, Ahmed</creatorcontrib><creatorcontrib>Chairi, Hicham</creatorcontrib><creatorcontrib>Malouli Idrissi, Mohammed</creatorcontrib><creatorcontrib>Bensbai, Jilali</creatorcontrib><title>Study of the growth of Octopus vulgaris in the Moroccan Mediterranean Sea by direct age estimation through the analysis of upper beaks</title><title>Journal of the Marine Biological Association of the United Kingdom</title><addtitle>J. Mar. Biol. Ass</addtitle><description>Beaks are one of the most important sclerochronological structures used to study the age and growth of cephalopods, in particular Octopus vulgaris Cuvier, 1797. The present study provides results of ageing of 128 O. vulgaris (56–239 mm dorsal mantle length, DML; 121–5974 g total weight, TW) collected in the southern Moroccan Mediterranean coasts between Fnideq and Jebha. The number of increments corresponding to the age (days since hatching) varied from 137–368 in females and from 129–382 in males. There was a significant correlation between beak and somatic growth. The correlation coefficients of the growth curves DML-Age and TW-Age were similar for both power and exponential models: DML = 0.185Age1.188 (R2 = 0.547), DML = 35.933e0.005Age (R2 = 0.546), TW = 0.00002Age3.260 (R2 = 0.532), TW = 29.56e0.014Age (R2 = 0.541). The average width of the increments was similar between females and males. 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Comparison of the growth curve with those estimated by other authors showed that Moroccan Mediterranean O. vulgaris grew faster than that of Sardinia (Italy) and slower than that of the Mauritanian coast.</description><subject>Age</subject><subject>Age determination</subject><subject>Beak</subject><subject>Beaks</subject><subject>Cephalopods</subject><subject>Chronology</subject><subject>Coefficients</subject><subject>Correlation coefficient</subject><subject>Correlation coefficients</subject><subject>Females</subject><subject>Growth curves</subject><subject>Hatching</subject><subject>Hypotheses</subject><subject>Males</subject><subject>Marine molluscs</subject><subject>Octopus vulgaris</subject><subject>Octopuses</subject><subject>Sexual maturity</subject><subject>Software</subject><issn>0025-3154</issn><issn>1469-7769</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kMtOwzAQRS0EEqXwAewssQ7YiWPHS1Txklp1UVhHjjNJU9o42A4oP8B347SVWCBWM6O5584DoWtKbimh4m5FSJwmNGVxQkJKsxM0oYzLSAguT9FkbEdj_xxdOLcJGspFNkHfK9-XAzYV9mvAtTVffj1WS-1N1zv82W9rZRuHm3avWBhrtFYtXkDZeLBWtRCqFShcDLhsLGiPVQ0YnG92yjdm5Kzp6_WeV63aDi74hRl914HFBah3d4nOKrV1cHWMU_T2-PA6e47my6eX2f080jGXPlIJL7XMeFlBSipdMc3ShAgKUEHMeclYIngmMsGVljIVCZOFYloSVpQp4SKZopuDb2fNRx92zDemt2Enl8cZ4YFOJQsqelBpa5yzUOWdDcfYIackH9-d_3l3YJIjo3aFbcoafq3_p34AIWiCwA</recordid><startdate>2023</startdate><enddate>2023</enddate><creator>Faiki, Ahmed</creator><creator>Chairi, Hicham</creator><creator>Malouli Idrissi, Mohammed</creator><creator>Bensbai, Jilali</creator><general>Cambridge University Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7SN</scope><scope>7TN</scope><scope>88A</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H95</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>LK8</scope><scope>M7N</scope><scope>M7P</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0002-0795-1891</orcidid></search><sort><creationdate>2023</creationdate><title>Study of the growth of Octopus vulgaris in the Moroccan Mediterranean Sea by direct age estimation through the analysis of upper beaks</title><author>Faiki, Ahmed ; 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Mar. Biol. Ass</addtitle><date>2023</date><risdate>2023</risdate><volume>103</volume><artnum>e33</artnum><issn>0025-3154</issn><eissn>1469-7769</eissn><abstract>Beaks are one of the most important sclerochronological structures used to study the age and growth of cephalopods, in particular Octopus vulgaris Cuvier, 1797. The present study provides results of ageing of 128 O. vulgaris (56–239 mm dorsal mantle length, DML; 121–5974 g total weight, TW) collected in the southern Moroccan Mediterranean coasts between Fnideq and Jebha. The number of increments corresponding to the age (days since hatching) varied from 137–368 in females and from 129–382 in males. There was a significant correlation between beak and somatic growth. The correlation coefficients of the growth curves DML-Age and TW-Age were similar for both power and exponential models: DML = 0.185Age1.188 (R2 = 0.547), DML = 35.933e0.005Age (R2 = 0.546), TW = 0.00002Age3.260 (R2 = 0.532), TW = 29.56e0.014Age (R2 = 0.541). The average width of the increments was similar between females and males. It varied significantly with season and stage of sexual maturity. Comparison of the growth curve with those estimated by other authors showed that Moroccan Mediterranean O. vulgaris grew faster than that of Sardinia (Italy) and slower than that of the Mauritanian coast.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S0025315423000218</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-0795-1891</orcidid></addata></record> |
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| subjects | Age Age determination Beak Beaks Cephalopods Chronology Coefficients Correlation coefficient Correlation coefficients Females Growth curves Hatching Hypotheses Males Marine molluscs Octopus vulgaris Octopuses Sexual maturity Software |
| title | Study of the growth of Octopus vulgaris in the Moroccan Mediterranean Sea by direct age estimation through the analysis of upper beaks |
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