Ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in Octopus vulgaris
There has been a great interest in common octopus Octopus vulgaris aquaculture in recent years and commercial production is within reach. O. vulgaris is a short-lived semelparous species with a long spawning period. Therefore, monitoring ovary maturation in cultured octopuses can be useful in the sc...
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Elsevier
2025-09-01
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| Series: | Aquaculture Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352513425004119 |
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| author | Lorenzo Márquez Pauline Weterings Samar Saber Beatriz C. Felipe Sofia Maccuro Marta Serrano Eve Seuntjens Francisco Acosta-Cifuentes María González Eduardo Almansa |
| author_facet | Lorenzo Márquez Pauline Weterings Samar Saber Beatriz C. Felipe Sofia Maccuro Marta Serrano Eve Seuntjens Francisco Acosta-Cifuentes María González Eduardo Almansa |
| author_sort | Lorenzo Márquez |
| collection | DOAJ |
| description | There has been a great interest in common octopus Octopus vulgaris aquaculture in recent years and commercial production is within reach. O. vulgaris is a short-lived semelparous species with a long spawning period. Therefore, monitoring ovary maturation in cultured octopuses can be useful in the scheduling of hatchery operations and management of culture resources. The present work assessed ovary volume as a proxy for maturity status in cultured and wild common octopus by means of a noninvasive technique, ultrasonography, to anticipate the time of spawning in aquaculture. A total of 27 octopuses (15 cultured females with initial wet weights from 600 to 4600 g, and 12 wild females weighing 990–4800 g) in different ovarian maturation stages were used in ultrasonographic procedures. Ultrasound-based ovary volumes were compared with real ovarian volumes and then the ultrasonography-based gonadosomatic index (GSIU) was estimated. Data from cultured females indicate that GSIU was initially below 0.3 cm3 per 100 g of body weight in immature animals, and attained a fast increase until reaching about 4.0 cm3 per 100 g of body weight just before spawning. The steep increase in relative volume occurred similarly in females of different body weights. Furthermore, the specific growth rate of cultured animals decreases with time, and with GSIU. Lastly, a linear mixed model indicated a significantly negative and logarithmic relationship between the time to spawning and GSIU in captive females. This relationship can be used to predict spawning time in immature and maturing females, helping in the management of octopus broodstock in research and production facilities. |
| format | Article |
| id | doaj-art-6423fc4ae31d4bc3952c37f69ef14f44 |
| institution | Kabale University |
| issn | 2352-5134 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aquaculture Reports |
| spelling | doaj-art-6423fc4ae31d4bc3952c37f69ef14f442025-08-20T03:40:33ZengElsevierAquaculture Reports2352-51342025-09-014310302510.1016/j.aqrep.2025.103025Ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in Octopus vulgarisLorenzo Márquez0Pauline Weterings1Samar Saber2Beatriz C. Felipe3Sofia Maccuro4Marta Serrano5Eve Seuntjens6Francisco Acosta-Cifuentes7María González8Eduardo Almansa9Centro de Investigación, Innovación y Creación (CIIC-UCT), NIPA, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco, ChileLaboratory of Developmental Neurobiology, Department of Biology, KU Leuven, Leuven, BelgiumCentro Oceanográfico de Málaga (COMA-IEO), CSIC, Málaga, SpainCentro Oceanográfico de Canarias (COC-IEO), CSIC, Santa Cruz de Tenerife, SpainLaboratory of Developmental Neurobiology, Department of Biology, KU Leuven, Leuven, BelgiumCentro Oceanográfico de Canarias (COC-IEO), CSIC, Santa Cruz de Tenerife, SpainLaboratory of Developmental Neurobiology, Department of Biology, KU Leuven, Leuven, BelgiumCentro Oceanográfico de Málaga (COMA-IEO), CSIC, Málaga, SpainCentro Oceanográfico de Málaga (COMA-IEO), CSIC, Málaga, SpainCentro Oceanográfico de Canarias (COC-IEO), CSIC, Santa Cruz de Tenerife, Spain; Corresponding author.There has been a great interest in common octopus Octopus vulgaris aquaculture in recent years and commercial production is within reach. O. vulgaris is a short-lived semelparous species with a long spawning period. Therefore, monitoring ovary maturation in cultured octopuses can be useful in the scheduling of hatchery operations and management of culture resources. The present work assessed ovary volume as a proxy for maturity status in cultured and wild common octopus by means of a noninvasive technique, ultrasonography, to anticipate the time of spawning in aquaculture. A total of 27 octopuses (15 cultured females with initial wet weights from 600 to 4600 g, and 12 wild females weighing 990–4800 g) in different ovarian maturation stages were used in ultrasonographic procedures. Ultrasound-based ovary volumes were compared with real ovarian volumes and then the ultrasonography-based gonadosomatic index (GSIU) was estimated. Data from cultured females indicate that GSIU was initially below 0.3 cm3 per 100 g of body weight in immature animals, and attained a fast increase until reaching about 4.0 cm3 per 100 g of body weight just before spawning. The steep increase in relative volume occurred similarly in females of different body weights. Furthermore, the specific growth rate of cultured animals decreases with time, and with GSIU. Lastly, a linear mixed model indicated a significantly negative and logarithmic relationship between the time to spawning and GSIU in captive females. This relationship can be used to predict spawning time in immature and maturing females, helping in the management of octopus broodstock in research and production facilities.http://www.sciencedirect.com/science/article/pii/S2352513425004119UltrasonographyOvarian volumeGonadosomatic indexTime to spawningSpecific growth rateOctopus vulgaris females |
| spellingShingle | Lorenzo Márquez Pauline Weterings Samar Saber Beatriz C. Felipe Sofia Maccuro Marta Serrano Eve Seuntjens Francisco Acosta-Cifuentes María González Eduardo Almansa Ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in Octopus vulgaris Aquaculture Reports Ultrasonography Ovarian volume Gonadosomatic index Time to spawning Specific growth rate Octopus vulgaris females |
| title | Ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in Octopus vulgaris |
| title_full | Ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in Octopus vulgaris |
| title_fullStr | Ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in Octopus vulgaris |
| title_full_unstemmed | Ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in Octopus vulgaris |
| title_short | Ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in Octopus vulgaris |
| title_sort | ultrasound measurements reveal predictable relationship between spawning time and ovarian growth in octopus vulgaris |
| topic | Ultrasonography Ovarian volume Gonadosomatic index Time to spawning Specific growth rate Octopus vulgaris females |
| url | http://www.sciencedirect.com/science/article/pii/S2352513425004119 |
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