Information
Version: B | 1.1 (2022-03-25)
Please note: This part of the profile is currently being revised.
WelfareScore | farm
Condensed assessment of the species' likelihood and potential for good fish welfare in aquaculture, based on ethological findings for 10 crucial criteria.
- Li = Likelihood that the individuals of the species experience good welfare under minimal farming conditions
- Po = Potential of the individuals of the species to experience good welfare under high-standard farming conditions
- Ce = Certainty of our findings in Likelihood and Potential
WelfareScore = Sum of criteria scoring "High" (max. 10)
General remarks
Octopus vulgaris has recently aroused much interest in aquaculture, considered suitable for large-scale production given its commercial value, its fecundity, rapid growth, high protein content, and high feed efficiency rate. The main problem, however, is the high mortality rate observed during paralarval rearing, making successful juvenile settlement still very difficult to achieve. Unfortunately, despite the high knowledge on the biology and ethology of this species, there are many other aspects to be solved from a welfare perspective. For instance, the current farming systems result in high stress in O. vulgaris due to spatial constraint, high densities, and sociability, which consequently increase aggression (cannibalism and autophagy) at different life stages. In addition, octopus skin is particularly sensitive and can be easily damaged during handling, transportation or stressful confinement conditions. A humane slaughtering protocol is not yet established, since the nature and degree of any suffering during current practices are unknown. O. vulgaris appears capable of experiencing pain and suffering, exhibits cognitive complexity and sophisticated behavioural patterns which can be interpreted and serve as indicator of the welfare status.
1 Home range
Many species traverse in a limited horizontal space (even if just for a certain period of time per year); the home range may be described as a species' understanding of its environment (i.e., its cognitive map) for the most important resources it needs access to.
What is the probability of providing the species' whole home range in captivity?
It is low for minimal and high-standard farming conditions. Our conclusion is based on a high amount of evidence.2 Depth range
Given the availability of resources (food, shelter) or the need to avoid predators, species spend their time within a certain depth range.
What is the probability of providing the species' whole depth range in captivity?
It is low for minimal farming conditions. It is medium for high-standard farming conditions. Our conclusion is based on a high amount of evidence.3 Migration
Some species undergo seasonal changes of environments for different purposes (feeding, spawning, etc.), and to move there, they migrate for more or less extensive distances.
What is the probability of providing farming conditions that are compatible with the migrating or habitat-changing behaviour of the species?
It is low for minimal farming conditions. It is medium for high-standard farming conditions. Our conclusion is based on a medium amount of evidence.4 Reproduction
A species reproduces at a certain age, season, and sex ratio and possibly involving courtship rituals.
What is the probability of the species reproducing naturally in captivity without manipulation of these circumstances?
It is low for minimal farming conditions. It is medium for high-standard farming conditions. Our conclusion is based on a medium amount of evidence.5 Aggregation
Species differ in the way they co-exist with conspecifics or other species from being solitary to aggregating unstructured, casually roaming in shoals or closely coordinating in schools of varying densities.
What is the probability of providing farming conditions that are compatible with the aggregation behaviour of the species?
It is low for minimal and high-standard farming conditions. Our conclusion is based on a high amount of evidence.6 Aggression
There is a range of adverse reactions in species, spanning from being relatively indifferent towards others to defending valuable resources (e.g., food, territory, mates) to actively attacking opponents.
What is the probability of the species being non-aggressive and non-territorial in captivity?
It is low for minimal and high-standard farming conditions. Our conclusion is based on a medium amount of evidence.7 Substrate
Depending on where in the water column the species lives, it differs in interacting with or relying on various substrates for feeding or covering purposes (e.g., plants, rocks and stones, sand and mud, turbidity).
What is the probability of providing the species' substrate and shelter needs in captivity?
It is low for minimal farming conditions. It is high for high-standard farming conditions. Our conclusion is based on a medium amount of evidence.8 Stress
Farming involves subjecting the species to diverse procedures (e.g., handling, air exposure, short-term confinement, short-term crowding, transport), sudden parameter changes or repeated disturbances (e.g., husbandry, size-grading).
What is the probability of the species not being stressed?
It is low for minimal farming conditions. It is medium for high-standard farming conditions. Our conclusion is based on a medium amount of evidence.9 Malformations
Deformities that – in contrast to diseases – are commonly irreversible may indicate sub-optimal rearing conditions (e.g., mechanical stress during hatching and rearing, environmental factors unless mentioned in crit. 3, aquatic pollutants, nutritional deficiencies) or a general incompatibility of the species with being farmed.
What is the probability of the species being malformed rarely?
There are no findings for minimal and high-standard farming conditions.10 Slaughter
The cornerstone for a humane treatment is that slaughter a) immediately follows stunning (i.e., while the individual is unconscious), b) happens according to a clear and reproducible set of instructions verified under farming conditions, and c) avoids pain, suffering, and distress.
What is the probability of the species being slaughtered according to a humane slaughter protocol?
It is unclear for minimal farming conditions. It is low for high-standard farming conditions. Our conclusion is based on a medium amount of evidence.Side note: Domestication
Teletchea and Fontaine introduced 5 domestication levels illustrating how far species are from having their life cycle closed in captivity without wild input, how long they have been reared in captivity, and whether breeding programmes are in place.
What is the species’ domestication level?
DOMESTICATION LEVEL 3 40, level 5 being fully domesticated.
Side note: Forage fish in the feed
450-1,000 milliard wild-caught fishes end up being processed into fish meal and fish oil each year which contributes to overfishing and represents enormous suffering. There is a broad range of feeding types within species reared in captivity.
To what degree may fish meal and fish oil based on forage fish be replaced by non-forage fishery components (e.g., poultry blood meal) or sustainable sources (e.g., soybean cake)?
All age classes: WILD: carnivorous 42 43 44 45 6 46. FARM: fish oil may be completely* omitted 47. Fish meal may be mostly* replaced by non-forage fishery components 48. In Octopus maya, fish meal may be completely* replaced by non-forage fishery components 49. Further research to determine whether this applies to O. vulgaris as well.
*partly = <51% – mostly = 51-99% – completely = 100%
Side note: Commercial relevance
How much is this species farmed annually?
No data found yet.Glossary
DOMESTICATION LEVEL 3 = entire life cycle closed in captivity with wild inputs 41
FARM = setting in farming environment or under conditions simulating farming environment in terms of size of facility or number of individuals
IND = individuals
JUVENILES = fully developed but immature individuals
LAB = setting in laboratory environment
LARVAE = hatching to mouth opening
PELAGIC = living independent of bottom and shore of a body of water
PHOTOPERIOD = duration of daylight
PLANKTONIC = horizontal movement limited to hydrodynamic displacement
SPAWNERS = adults during the spawning season; in farms: adults that are kept as broodstock
WILD = setting in the wild
Bibliography
2 Arechavala-Lopez, P., M. Minguito-Frutos, G. Follana-Berná, and M. Palmer. 2019. Common octopus settled in human-altered Mediterranean coastal waters: from individual home range to population dynamics. ICES Journal of Marine Science 76: 585–597. https://doi.org/10.1093/icesjms/fsy014.
3 Mereu, Marco, Blondine Agus, Rita Cannas, Alessandro Cau, Elisabetta Coluccia, and Danila Cuccu. 2015. Mark–recapture investigation on Octopus vulgaris specimens in an area of the central western Mediterranean Sea. Journal of the Marine Biological Association of the United Kingdom 95: 131–138. https://doi.org/10.1017/S002531541400112X.
4 Mereu, Marco, Blondine Agus, Piero Addis, Serenella Cabiddu, Alessandro Cau, Maria Cristina Follesa, and Danila Cuccu. 2015. Movement estimation of Octopus vulgaris Cuvier, 1797 from mark recapture experiment. Journal of Experimental Marine Biology and Ecology 470: 64–69. https://doi.org/10.1016/j.jembe.2015.05.007.
5 Otero, Jaime, Ángel F. González, M. Pilar Sieiro, and Ángel Guerra. 2007. Reproductive cycle and energy allocation of Octopus vulgaris in Galician waters, NE Atlantic. Fisheries Research 85: 122–129. https://doi.org/10.1016/j.fishres.2007.01.007.
6 Roura, Álvaro, Ángel F. González, Kevin Redd, and Ángel Guerra. 2012. Molecular prey identification in wild Octopus vulgaris paralarvae. Marine Biology 159: 1335–1345. https://doi.org/10.1007/s00227-012-1914-9.
7 Guerra, Ángel. 1981. Spatial distribution pattern of Octopus vulgaris. Journal of Zoology 195: 133–146.
8 Katsanevakis, Stelios, and George Verriopoulos. 2004. Abundance of Octopus vulgaris on soft sediment. Scientia Marina 68: 553–560. https://doi.org/10.3989/scimar.2004.68n4553.
9 Pierce, G. J., L. Allcock, I. Bruno, P. Bustamante, A. González, A. Guerra, P. Jereb, et al. 2010. Cephalopod biology and fisheries in Europe. Edited by G. J. Pierce, L. Allcock, I. Bruno, P. Bustamante, A. González, A. Guerra, P. Jereb, et al. Vol. 303. ICES Cooperative Research Report. Copenhagen, Denmark: ICES.
10 Guerra, Ángel, Jorge Hernández-Urcera, Manuel E. Garci, Marta Sestelo, Marcos Regueira, Ángel F. González, Miguel Cabanellas-Reboredo, Matías Calvo-Manazza, and Beatriz Morales-Nin. 2014. Dwellers in dens on sandy bottoms: Ecological and behavioural traits of Octopus vulgaris. Scientia Marina 78: 405–414. https://doi.org/10.3989/scimar.04071.28F.
11 Iglesias, J., F. J. Sánchez, J. G. F. Bersano, J. F. Carrasco, J. Dhont, L. Fuentes, F. Linares, et al. 2007. Rearing of Octopus vulgaris paralarvae: Present status, bottlenecks and trends. Aquaculture 266: 1–15. https://doi.org/10.1016/j.aquaculture.2007.02.019.
12 Fiorito, Graziano, Andrea Affuso, Jennifer Basil, Alison Cole, Paolo de Girolamo, Livia D’Angelo, Ludovic Dickel, et al. 2015. Guidelines for the Care and Welfare of Cephalopods in Research –A consensus based on an initiative by CephRes, FELASA and the Boyd Group. Laboratory Animals 49: 1–90. https://doi.org/10.1177/0023677215580006.
13 Fuentes, Lidia, and José Iglesias-Estévez. 2010. Release experiments with Octopus vulgaris Cuvier, 1797 in Galicia, NW Spain. First results on recapture rate, distribution and growth. Vie et Milieu - Life and Environment 60: 65–71.
14 Aguado Giménez, F., and B. García García. 2002. Growth and food intake models in Octopus vulgaris Cuvier (1797): influence of body weight, temperature, sex and diet. Aquaculture International 10: 361–377. https://doi.org/10.1023/A:1023335024053.
15 Miliou, Helen, Myrsini Fintikaki, Triantaphyllos Kountouris, and George Verriopoulos. 2005. Combined effects of temperature and body weight on growth and protein utilization of the common octopus, Octopus vulgaris. Aquaculture 249: 245–256. https://doi.org/10.1016/j.aquaculture.2005.03.038.
16 Delgado, Marina, Joan Ignasi Gairín, Ricard Carbó, and Cristóbal Aguilera. 2010. Growth of Octopus vulgaris (Cuvier, 1797) in tanks in the Ebro Delta (NE Spain): effects of temperature, salinity and culture density. Scientia Marina 75: 53–59. https://doi.org/10.3989/scimar.2011.75n1053.
17 Cuccu, Danila, Marco Mereu, Alessandro Cau, Paola Pesci, and Angelo Cau. 2013. Reproductive development versus estimated age and size in a wild Mediterranean population of Octopus vulgaris (Cephalopoda: Octopodidae). Journal of the Marine Biological Association of the United Kingdom 93: 843–849. https://doi.org/10.1017/S0025315412000203.
18 Katsanevakis, Stelios, and George Verriopoulos. 2006. Seasonal population dynamics of Octopus vulgaris in the eastern Mediterranean. ICES Journal of Marine Science 63: 151–160. https://doi.org/10.1016/j.icesjms.2005.07.004.
19 Caverivière, Alain, François Domain, and Anis Diallo. 1999. Observations on the influence of temperature on the length of embryonic development in Octopus vulgaris (Senegal). Aquatic Living Resources 12: 151–154. https://doi.org/10.1016/S0990-7440(99)80024-2.
20 Wolf, Tania De, Simone Lenzi, and Francesco Lenzi. 2011. Paralarval rearing of Octopus vulgaris (Cuvier) in Tuscany, Italy. Aquaculture Research 42: 1406–1414. https://doi.org/10.1111/j.1365-2109.2010.02756.x.
21 Mather, Jennifer A. 1994. ‘Home’ choice and modification by juvenile Octopus vulgaris (Mollusca: Cephalopoda): specialized intelligence and tool use? Journal of Zoology 233: 359–368. https://doi.org/10.1111/j.1469-7998.1994.tb05270.x.
22 Rodríguez, Carmen, José F. Carrasco, Juan C. Arronte, and Montse Rodríguez. 2006. Common octopus (Octopus vulgaris Cuvier, 1797) juvenile ongrowing in floating cages. Aquaculture 254: 293–300. https://doi.org/10.1016/j.aquaculture.2005.10.053.
23 Domingues, Pedro, Sandra Garcia, and Diego Garrido. 2010. Effects of three culture densities on growth and survival of Octopus vulgaris (Cuvier, 1797). Aquaculture International 18: 165–174. https://doi.org/10.1007/s10499-008-9233-3.
24 Chapela, Albert, Ángel F. González, Earl G. Dawe, Francisco J. Rocha, and Ángel Guerra. 2006. Growth of common octopus (Octopus vulgaris) in cages suspended from rafts. Scientia Marina 70: 121–129. https://doi.org/10.3989/scimar.2006.70n1121.
25 Roura, Álvaro, A. Castro Bugallo, M. Martínez Pérez, and A. F. González. 2019. Te quedaste con hambre? Canibalismo en la etapa larvaria del pulpo común. Libro de Actas del XVII Congreso Nacional de Acuicultura. Cartagena, Spain.
26 Altman, J. S., J. N. Lythgoe, and J. D. Woods. 1966. The behaviour of octopuis vulgaris Lam. in its natural habitat : a pilot study. Underwater Association Report. Carshalton, England: T.G.W. Industrial & Research Promotions.
27 Kayes, R. J. 1973. The daily activity pattern of Octopus vulgaris in a natural habitat. Marine Behaviour and Physiology 2: 337–343. https://doi.org/10.1080/10236247309386935.
28 Mather, Jennifer A., and Ron K. O’Dor. 1991. Foraging Strategies and Predation Risk Shape the Natural History of Juvenile Octopus Vulgaris. Bulletin of Marine Science 49: 256–269.
29 Hernández-Urcera, Jorge, Manuel E. Garci, Álvaro Roura, Ángel F. González, Miguel Cabanellas-Reboredo, Beatriz Morales-Nin, and Ángel Guerra. 2014. Cannibalistic behavior of octopus (Octopus vulgaris) in the wild. Journal of Comparative Psychology 128: 427–430. https://doi.org/10.1037/a0036883.
30 Arechavala-Lopez, Pablo. 2019. Personal communication.
31 Mereu, Marco, Alessandro Cau, Blondine Agus, Rita Cannas, Maria Cristina Follesa, Paola Pesci, and Danila Cuccu. 2018. Artificial dens as a management tool for Octopus vulgaris: evidence from a Collaborative Fisheries Research project (central western Mediterranean Sea). Ocean & Coastal Management 165: 428–433. https://doi.org/10.1016/j.ocecoaman.2018.09.006.
32 Iglesias, J., J.J. Otero, C. Moxica, L. Fuentes, and F.J. Sánchez. 2004. The Completed Life Cycle of the Octopus (Octopus vulgaris, Cuvier) under Culture Conditions: Paralarval Rearing using Artemia and Zoeae, and First Data on Juvenile Growth up to 8 Months of Age. Aquaculture International 12: 481–487. https://doi.org/10.1023/B:AQUI.0000042142.88449.bc.
33 García, Benjamín García, Jesús Cerezo Valverde, Felipe Aguado‐Giménez, José García García, and María D. Hernández. 2009. Growth and mortality of common octopus Octopus vulgaris reared at different stocking densities in Mediterranean offshore cages. Aquaculture Research 40: 1202–1212. https://doi.org/10.1111/j.1365-2109.2009.02222.x.
34 Estefanell, J., J. Roo, R. Guirao, M. Izquierdo, and J. Socorro. 2012. Benthic cages versus floating cages in Octopus vulgaris: Biological performance and biochemical composition feeding on Boops boops discarded from fish farms. Aquacultural Engineering 49: 46–52. https://doi.org/10.1016/j.aquaeng.2012.02.001.
35 Estefanell, J., J. Roo, H. Fernández‐Palacios, M. Izquierdo, J. Socorro, and R. Guirao. 2012. Comparison Between Individual and Group Rearing Systems in Octopus vulgaris (Cuvier, 1797). Journal of the World Aquaculture Society 43: 63–72. https://doi.org/10.1111/j.1749-7345.2011.00540.x.
36 Kwon, Inyeong, and Taeho Kim. 2015. Growth and mortality of the juvenile common octopus (Octopus vulgaris) in pipe-and tire-type shelters placed in flow-through seawater tanks. J Kor Soc Fish Technol 51: 1–8.
37 Guerra, Ángel, Jorge Hernández-Urcera, Manuel E. Garci, Marta Sestelo, Marcos Regueira, Ángel F. González, Miguel Cabanellas-Reboredo, Matías Calvo-Manazza, and Beatriz Morales-Nin. 2015. Spawning habitat selection by Octopus vulgaris: New insights for a more effective management of this resource. Fisheries Research 167: 313–322. https://doi.org/10.1016/j.fishres.2015.03.011.
38 Boyle, P. R. 1991. The UFAW handbook on the care and management of cephalopods in the laboratory. Potters Bar, UK: Universities Federation for Animal Welfare.
39 Andrews, Paul L. R., Anne-Sophie Darmaillacq, Ngaire Dennison, Ian G. Gleadall, Penny Hawkins, John B. Messenger, Daniel Osorio, Valerie J. Smith, and Jane A. Smith. 2013. The identification and management of pain, suffering and distress in cephalopods, including anaesthesia, analgesia and humane killing. Journal of Experimental Marine Biology and Ecology 447. Cephalopod Biology a Special Issue Compiled under the Auspices of No-Profit Research Organization CephRes: 46–64. https://doi.org/10.1016/j.jembe.2013.02.010.
40 Teletchea, Fabrice. 2015. Domestication of Marine Fish Species: Update and Perspectives. Journal of Marine Science and Engineering 3: 1227–1243. https://doi.org/10.3390/jmse3041227.
41 Teletchea, Fabrice, and Pascal Fontaine. 2012. Levels of domestication in fish: implications for the sustainable future of aquaculture. Fish and Fisheries 15: 181–195. https://doi.org/10.1111/faf.12006.
42 Quetglas, Antoni, Francesc Alemany, Aina Carbonell, Paolo Merella, and Pilar Sánchez. 1998. Biology and fishery of Octopus vulgaris Cuvier, 1797, caught by trawlers in Mallorca (Balearic Sea, Western Mediterranean). Fisheries Research 36: 237–249. https://doi.org/10.1016/S0165-7836(98)00093-9.
43 Rosa, Rui, António Manuel Marques, María Leonor Nunes, Narcisa Bandarra, and Carlos Sousa Reis. 2004. Spatial-temporal changes in dimethyl acetal (octadecanal) levels of Octopus vulgaris (Mollusca, Cephalopoda): relation to feeding ecology. Scientia Marina 68: 227–236. https://doi.org/10.3989/scimar.2004.68n2227.
44 Villanueva, R., J. M. Escudero, R. Deulofeu, A. Bozzano, and C. Casoliva. 2009. Vitamin A and E content in early stages of cephalopods and their dietary effects in Octopus vulgaris paralarvae. Aquaculture 286: 277–282. https://doi.org/10.1016/j.aquaculture.2008.09.032.
45 Moreno, Ana, Antonina Dos Santos, Uwe Piatkowski, A. Miguel P. Santos, and Henrique Cabral. 2009. Distribution of cephalopod paralarvae in relation to the regional oceanography of the western Iberia. Journal of Plankton Research 31: 73–91. https://doi.org/10.1093/plankt/fbn103.
46 Olmos-Pérez, Lorena, Álvaro Roura, Graham J. Pierce, Stéphane Boyer, and Ángel F. González. 2017. Diet Composition and Variability of Wild Octopus vulgaris and Alloteuthis media (Cephalopoda) Paralarvae: a Metagenomic Approach. Frontiers in Physiology 8. https://doi.org/10.3389/fphys.2017.00321.
47 Morillo‐Velarde, Piedad S., Jesús Cerezo Valverde, and Benjamín García‐García. 2015. Utilization of diets with different fish oil content in common octopus (Octopus vulgaris Cuvier, 1797) and resulting changes in its biochemical composition. Aquaculture Research 46: 2871–2884. https://doi.org/10.1111/are.12439.
48 Morillo-Velarde, P. S., J. Cerezo Valverde, M. D. Hernández, F. Aguado-Giménez, and B. García García. 2012. Growth and digestibility of formulated diets based on dry and freeze-dried ingredients in the common octopus (Octopus vulgaris). Aquaculture 368–369: 139–144. https://doi.org/10.1016/j.aquaculture.2012.09.028.
49 Méndez Aguilar, Francisco Daniel, Miguel Ángel Olvera Novoa, Sergio Rodríguez Morales, and Carlos Rosas Vázquez. 2014. Nutritive value of four by-product meals as potential protein sources in diets for Octopus maya. Hidrobiológica 24: 69–77.
