Version: B | 1.1 (2022-06-23)
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
FishEthoScore = Sum of criteria scoring "High" (max. 10)
Litopenaeus vannamei is a promising shrimp species for aquaculture and is usually harvested before the individuals reach the adult stage. Unfortunately many aspects of its natural history are being disregarded in the industry. Its dependence on fish in the feed is an issue that is deserving attention but is not solved. Unnatural stocking densities, shallow tanks, absence of substrate in culture tanks, and the highly invasive practice of eyestalk ablation are major problems that hinder this species’ welfare in aquaculture. However, the biggest issue seems to be the absence of data on many aspects of its biology. Further research is needed on natural behaviour as well as on the physiological effects of farming practices.
Providing soft substrate that allows the expression of natural behaviours such as burrowing and grazing, as well as reducing stocking densities are simple measures that should help improve both performance and welfare. Eyestalk ablation has been recently shown to be unnecessary to induce spawning and therefore should not be implemented.
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?There are unclear findings for minimal and high-standard farming conditions. Our conclusion is based on a low amount of evidence.
POST-LARVAE: WILD: no data found yet. FARM: transferred to JUVENILES ponds 6.
SPAWNERS: WILD: no data found yet. FARM: minimum 3.7 m diameter recommended 8.
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 and high-standard farming conditions. Our conclusion is based on a medium amount of evidence.
LARVAE: WILD: no data found yet. FARM: flat, 'V' or 'U' shaped tanks: 4-100 m³ 5.
POST-LARVAE WILD: no data found yet. FARM: transferred to JUVENILES ponds 6.
Some species undergo seasonal changes of environments for different purposes (feeding, spawning, etc.) and with them, environmental parameters (photoperiod, temperature, salinity) may change, too. 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 high amount of evidence.
AMPHIDROMOUS, EURYHALINE 14.
JUVENILES: WILD: inshore, usually in mangroves or estuaries 10 16 9, may migrate at 2.5 months to maturate offshore 10. FARM: sea- or brackish water 5. For details of holding systems ➝ crit. 1 and 2. LAB: freshwater rearing is possible 17.
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?It is low for minimal farming conditions. It is high for high-standard farming conditions. Our conclusion is based on a high amount of evidence.
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 farming conditions. It is medium for high-standard farming conditions. Our conclusion is based on a medium amount of evidence.
POST-LARVAE: WILD: no data found yet. FARM: 20-200 IND/m2 25.
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 farming conditions. It is medium for high-standard farming conditions. Our conclusion is based on a low amount of evidence.
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). 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 high amount of evidence.
SPAWNERS: WILD: do not need specific substrate to mate or spawn 18 19, but depend on substrate for grazing 16 and burrowing 9 34. FARM: maturation tanks may have sand substrate 24, spawning tanks have no reports of substrate 24 35.
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.
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 unclear findings for minimal and high-standard farming conditions. Our conclusion is based on a low amount of evidence.
LARVAE: no data found yet.
POST-LARVAE: no data found yet.
JUVENILES: no deformities found in intense farming 40. Further research needed on frequency of malformations under other culture conditions.
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 low for minimal farming conditions. It is medium 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 4 44, 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)?
* partly = <51% – mostly = 51-99% – completely = 100%
BENTHIC = living at the bottom of a body of water, able to rest on the floor
DOMESTICATION LEVEL 4 = entire life cycle closed in captivity without wild inputs 45
EURYHALINE = tolerant of a wide range of salinities
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, for details ➝ Findings 10.1 Ontogenetic development
LAB = setting in laboratory environment
LARVAE = hatching to mouth opening, for details ➝ Findings 10.1 Ontogenetic development
PELAGIC = living independent of bottom and shore of a body of water
POST-LARVAE = fully developed individuals, beginning of external sex differentiation; for details ➝ Findings 10.1 Ontogenetic development
SPAWNERS = adults during the spawning season; in farms: adults that are kept as broodstock
WILD = setting in the wild
2 Gunter, Gordon, J. Y. Christmas, and Rosamond Killebrew. 1964. Some Relations of Salinity to Population Distributions of Motile Estuarine Organisms, with Special Reference to Penaeid Shrimp. Ecology 45: 181–185. https://doi.org/10.2307/1937124.
3 Cook, Harry L., and M. Alice Murphy. 1969. The Culture of Larval Penaeid Shrimp. Transactions of the American Fisheries Society 98: 751–754. https://doi.org/10.1577/1548-8659(1969)98[751:TCOLPS]2.0.CO;2.
4 Bailey-Brock, J.H., and S. M. Moss. 1992. Penaeid taxonomy, biology and zoogeography. In Marine shrimp culture: Principles and practices, 9–27. Elsevier.
5 Briggs, M. 2006. Cultured Aquatic Species Information Programme. Penaeus vannamei. Rome: FAO Fisheries and Aquaculture Department.
6 Fast, Arlo Wade, and L James Lester. 1992. Marine shrimp culture: principles and practices. Vol. 23. Elsevier.
7 Fast, A. W. 1992. Penaeid growout systems: an overview. Developments in aquaculture and fisheries science 23: 345–353.
8 Bray, W. A., and A. L. Lawrence. 1992. Reproduction of Penaeus species in captivity. Developments in aquaculture and fisheries science 23: 93–170.
9 Moctezuma, M. A., and B. F. Blake. 1981. Burrowing Activity in Penaeus Vannamei Boone from the Caimanero-Huizache Lagoon System on the Pacific Coast of Mexico. Bulletin of Marine Science 31: 312–317.
10 Rivera-Velázquez, G., L. A. Soto, I. H. Salgado-Ugarte, and E. J. Naranjo. 2008. Growth, mortality and migratory pattern of white shrimp (Litopenaeus vannamei, Crustacea, Penaeidae) in the Carretas-Pereyra coastal lagoon system, Mexico. Revista de Biología Tropical 56: 523–533.
11 Perez-Velazquez, Martin, Mayra L. González-Félix, D. A. Davis, Luke A. Roy, and Xuezhi Zhu. 2013. Studies of the Thermal and Haline Influences on Growth and Survival of Litopenaeus vannamei and Litopenaeus setiferus. Journal of the World Aquaculture Society 44: 229–238. https://doi.org/10.1111/jwas.12028.
12 Wakida-Kusunoki, Armando T., Luis Enrique Amador-del Angel, Patricia Carrillo Alejandro, and Cecilia Quiroga Brahms. 2011. Presence of Pacific white shrimp Litopenaeus vannamei (Boone, 1931) in the Southern Gulf of Mexico. Aquatic Invasions 6: S139–S142. https://doi.org/10.3391/ai.2011.6.S1.031.
13 Pontes, Cibele Soares, Maria de Fatima Arruda, Alexandre Augusto de Lara Menezes, and Patrícia Pereira de Lima. 2006. Daily activity pattern of the marine shrimp Litopenaeus vannamei (Boone 1931) juveniles under laboratory conditions. Aquaculture Research 37: 1001–1006. https://doi.org/10.1111/j.1365-2109.2006.01519.x.
14 Dall, WHBJ, BJ Hill, PC Rothlisberg, DJ Sharples, and others. 1990. The biology of the Penaeidae. Advances in marine biology 27.
15 Rothlisberg, Peter C., John A. Church, and Andrew M. G. Forbes. 1983. Modelling the advection of vertically migrating shrimp larvae. Journal of Marine Research 41: 511–538. https://doi.org/10.1357/002224083788519759.
16 Varadharajan, D., and N. Pushparajan. 2013. Food and Feeding Habits of Aquaculture Candidate a Potential Crustacean of Pacific White Shrimp Litopenaeus Vannamei, South East Coast of India. J Aquac Res Development 4: 5. https://doi.org/10.4172/2155-9546.1000161.
17 Araneda, Marcelo, Eduardo P. Pérez, and Eucario Gasca-Leyva. 2008. White shrimp Penaeus vannamei culture in freshwater at three densities: Condition state based on length and weight. Aquaculture 283: 13–18. https://doi.org/10.1016/j.aquaculture.2008.06.030.
18 Yano, I., R. A. Kanna, R. N. Oyama, and J. A. Wyban. 1988. Mating behaviour in the penaeid shrimp Penaeus vannamei. Marine Biology 97: 171–175. https://doi.org/10.1007/BF00391299.
19 Misamore, Michael J., and Craig L. Browdy. 1996. Mating Behavior in the White Shrimps Penaeus setiferus and P. vannamei: A Generalized Model for Mating in Penaeus. Journal of Crustacean Biology 16: 61–70. https://doi.org/10.2307/1548931.
20 Kumlu, Metin, Serhat Türkmen, Mehmet Kumlu, and O. Tufan Eroldoğan. 2011. Off-season Maturation and Spawning of the Pacific White Shrimp Litopenaeus vannamei in Sub-tropical Conditions. Turkish Journal of Fisheries and Aquatic Sciences 11.
21 Wright, James. 2016. Seajoy’s ablation-free shrimp answers emerging welfare concern | The Advocate.
22 Seajoy. 2018. Seajoy! - Non Ablation. http://www.seajoy.com/index.php/sustainable/non-ablation. Accessed May 22.
23 Undercurrent News. 2016. Seajoy stops shrimp eyestalk ablation. Undercurrent News.
24 Colt, J., and J. JUGUENIN. 1992. Shrimp hatchery design: engineering considerations. Developments in aquaculture and fisheries science 23: 245–285.
25 Sturmer, Leslie, Samocha, T, and A. L. Lawrence. 1992. Intensification of penaeid nursery systems. In Marine Shrimp Culture: Principles and Practices. Elsevier.
26 Edwards, R.R.C. 1977. Field experiments on growth and mortality of Penaeus vannamei in a Mexican coastal lagoon complex. Estuarine and Coastal Marine Science 5: 107–121. https://doi.org/10.1016/0302-3524(77)90076-7.
27 Medina-Reyna, C. E. 2001. Growth and emigration of white shimp, Litopenaeus vannamei, in the Mar Muerto Lagoon, Southern Mexico. Naga, the ICLARM Quarterly 24: 30–34.
28 Roque, Ana. 2015. Personal communication.
29 Moss, Dustin R., and Shaun M. Moss. 2006. Effects of Gender and Size on Feed Acquisition in the Pacific White Shrimp Litopenaeus vannamei. Journal of the World Aquaculture Society 37: 161–167. https://doi.org/10.1111/j.1749-7345.2006.00022.x.
30 Obaldo, Leonard G., and Reiji Masuda. 2006. Effect of Diet Size on Feeding Behavior and Growth of Pacific White Shrimp, Litopenaeus vannamei. Journal of Applied Aquaculture 18: 101–110. https://doi.org/10.1300/J028v18n01_07.
31 Panutrakul, S., W. Senanan, S. Chavanich, N. Tangkrock-Olan, and V. Viyakarn. 2010. Ability of Litopenaeus vannamei to survive and compete with local marine shrimp species in the Bangpakong river, Thailand. In Tropical Deltas and Coastal Zones: Food Production, Communities and Environment at the Land-Water Interface, ed. Chu T. Hoanh, Brian W. Szuster, Kam Suan-Pheng, Abdelbagi M. Ismail, and Andrew D. Noble, 9:80–92. Comprehensive Assessment of Water Management in Agriculture. UK: CAB International.
32 Gatune, Charles, Ann Vanreusel, Clio Cnudde, Renison Ruwa, Peter Bossier, and Marleen De Troch. 2012. Decomposing mangrove litter supports a microbial biofilm with potential nutritive value to penaeid shrimp post larvae. Journal of Experimental Marine Biology and Ecology 426–427: 28–38. https://doi.org/10.1016/j.jembe.2012.05.015.
33 Schveitzer, Rodrigo, Rafael Arantes, Manecas Francisco Baloi, Patrícia Fóes S. Costódio, Luis Vinatea Arana, Walter Quadros Seiffert, and Edemar Roberto Andreatta. 2013. Use of artificial substrates in the culture of Litopenaeus vannamei (Biofloc System) at different stocking densities: Effects on microbial activity, water quality and production rates. Aquacultural Engineering 54: 93–103. https://doi.org/10.1016/j.aquaeng.2012.12.003.
34 Ritvo, G, T.M Samocha, A.L Lawrence, and W.H Neill. 1998. Growth of Penaeus vannamei on soils from various Texas shrimp farms, under laboratory conditions. Aquaculture 163: 101–110. https://doi.org/10.1016/S0044-8486(98)00225-7.
35 Hirono, Yosuke, and Mark Leslie. 1992. Chapter 38 - Shrimp culture industry in Ecuador. In Marine Shrimp Culture, ed. Arlo W. Fast and L. James Lester, 783–815. Developments in Aquaculture and Fisheries Science. Amsterdam: Elsevier. https://doi.org/10.1016/B978-0-444-88606-4.50044-8.
36 Mercier, Laurence, Elena Palacios, Ángel I. Campa-Córdova, Dariel Tovar-Ramírez, Roberto Hernández-Herrera, and Ilie S. Racotta. 2006. Metabolic and immune responses in Pacific whiteleg shrimp Litopenaeus vannamei exposed to a repeated handling stress. Aquaculture 258: 633–640. https://doi.org/10.1016/j.aquaculture.2006.04.036.
37 Taylor, J., L. Vinatea, R. Ozorio, R. Schuweitzer, and E. R. Andreatta. 2004. Minimizing the effects of stress during eyestalk ablation of Litopenaeus vannamei females with topical anesthetic and a coagulating agent. Aquaculture 233: 173–179. https://doi.org/10.1016/j.aquaculture.2003.09.034.
38 Leung-Trujillo, Joanna K., and A. L. Lawrence. 1985. The effect of eyestalk ablation on spermatophore and sperm quality in Penaeus vannamei. Journal of the World Mariculture Society 16: 258–266. https://doi.org/10.1111/j.1749-7345.1985.tb00208.x.
39 Racotta, Ilie S., and Elena Palacios. 1998. Hemolymph Metabolic Variables in Response to Experimental Manipulation Stress and Serotonin Injection in Penaeus vannamei. Journal of the World Aquaculture Society 29: 351–356. https://doi.org/10.1111/j.1749-7345.1998.tb00658.x.
40 Sánchez-Barajas, Maximiliano, Marco Agustín Liñán-Cabello, and Alfredo Mena-Herrera. 2009. Detection of yellow-head disease in intensive freshwater production systems of Litopenaeus vannamei. Aquaculture International 17: 101–112. https://doi.org/10.1007/s10499-008-9183-9.
41 Sparrey, Julian. 2005. Testing of Crustastun single crab and lobster stunner. Unpublished research report. UK.
42 Neil, Douglas. 2010. The effect of the CrustastunTM on nerve activity in crabs and lobsters. Scientific Report to Studham Technologies Ltd. UK: University of Glasgow.
43 Roth, B, and S Øines. 2010. Stunning and killing of edible crabs (Cancer pagurus). Animal Welfare 19: 287–294.
44 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.
45 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.
46 Browdy, Craig, Gloria Seaborn, Heidi Atwood, D. Allen Davis, Robert A. Bullis, Tzachi M. Samocha, Ed Wirth, and John W. Leffler. 2006. Comparison of Pond Production Efficiency, Fatty Acid Profiles, and Contaminants in Litopenaeus vannamei Fed Organic Plant-based and Fish-meal-based Diets. Journal of the World Aquaculture Society 37: 437–451. https://doi.org/10.1111/j.1749-7345.2006.00057.x.
47 Amaya, Elkin A., D. Allen Davis, and David B. Rouse. 2007. Replacement of fish meal in practical diets for the Pacific white shrimp (Litopenaeus vannamei) reared under pond conditions. Aquaculture 262: 393–401. https://doi.org/10.1016/j.aquaculture.2006.11.015.
48 Jayasankar, Vidya, Safiah Jasmani, Takeshi Nomura, Setsuo Nohara, Do Thi Thanh Huong, and Marcy N. Wilder. 2009. Low Salinity Rearing of the Pacific White Shrimp Litopenaeus vannamei: Acclimation, Survival and Growth of Postlarvae and Juveniles. Japan Agricultural Research Quarterly: JARQ 43: 345–350. https://doi.org/10.6090/jarq.43.345.
49 Samocha, T. 2004. Substitution of fish meal by co-extruded soybean poultry by-product meal in practical diets for the Pacific white shrimp, Litopenaeus vannamei. Aquaculture 231: 197–203. https://doi.org/10.1016/j.aquaculture.2003.08.023.