Increased robustness of postlarvae and juveniles from non-ablated Pacific whiteleg shrimp, Penaeus vannamei, broodstock post-challenged with pathogenic isolates of Vibrio parahaemolyticus (VpAHPND) and white spot disease (WSD)

Zacarias, Simão; Fegan, Daniel F.; Wangsoontorn, S.; Yamuen, Nitrada; Limakom, Tarinee; Carboni, Stefano; Davie, Andrew; Metselaar, Matthijs; Little, David C.; Shinn, Andrew P.

doi:10.1016/j.aquaculture.2020.736033

Cited by 12 publications

(4 citation statements)

References 27 publications

(30 reference statements)

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“…The eyestalk ablation technique is known to induce maturation and spawning peaks in several commercial productions of penaeid shrimps and research establishments worldwide (Kumlu et al, 2011). However, this technique is associated to physiological imbalance of the breeders (Wickins & Lee 2002) and may also negatively affect the quality of the offspring (Zacarias et al, 2019(Zacarias et al, , 2021. In the present study, application of this technique impacted the reproductive development of the shrimp M. acanthurus in regard to loss of embryos and the number of produced eggs (fecundity) and larvae (fertility).…”

Section: Discussionmentioning

confidence: 99%

Reproductive performance of Macrobrachium acanthurus (Crustacea, Palaemonidae) females subjected to unilateral eyestalk ablation

et al. 2021

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The present study investigated the effects of eyestalk ablation on the reproductive performance of females from the native caridean shrimp Macrobrachium acanthurus. The reproduction parameters fertility, fecundity, egg volume, larvae size, loss of embryos and number of females with viable eggs/larvae were evaluated. Females presenting carapace length of 12–15 mm and spent stage of gonadal development were divided into two groups, one undergoing unilateral eyestalk ablation and the other remaining intact. The specimens were kept in aquarium until ovarian maturation, then brought together with males for mating (proportion of two females for each male). Fecundity and fertility were greater in intact females (1,741 eggs and 1,045 larvae) than in ablated ones (1,373 eggs and 741 larvae). Ablation also reduced the percentage of females with viable eggs (68% intact versus 49% ablated) and larvae (82% intact versus 64% ablated), besides increasing the loss of embryos. Egg volume and shape (ellipsoid) and larvae size were similar, as was the duration of embryonic development. The results of this study suggest that, although ablated females exhibit a high rate of survival, their reproductive performance is reduced; therefore, the ablation technique is not recommended in M. acanthurus farming, so as to protect the animals from physiological stress.

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Section: Discussionmentioning

confidence: 99%

Reproductive performance of Macrobrachium acanthurus (Crustacea, Palaemonidae) females subjected to unilateral eyestalk ablation

et al. 2021

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“…Recent reports have suggested that similar productivity in broodstock can be obtained without eyestalk ablation through the application of husbandry interventions, including prematuration conditioning, increased stocking density and/or altered sex ratios (Zacarias et al, 2019). Trials conducted using these practices have demonstrated that rapid maturation and rematuration of non-ablated P. vannamei females can be obtained while maintaining similar production levels of eggs/nauplii compared to ablated females (Zacarias et al, 2019;Zacarias et al, 2021). In addition, genetic background has been…”

Section: Maturation Of Female Broodstock and Current Production Pract...mentioning

confidence: 99%

“…Reduce gonad inhibiting hormone (Treerattrakool et al, 2014;Das et al, 2015) Induce rapid maturation and spawn (Chamberlain and Lawrence, 1981;Palacios et al, 1999b) Negative Physiological imbalance (Palacios et al, 1999b;Das et al, 2015) Reproductive exhaustion (Palacios et al, 1999b;Das et al, 2015) Physical trauma (Taylor et al, 2004;Bae et al, 2013) Stress (Taylor et al, 2004;Bae et al, 2013;Treerattrakool et al, 2014) Reduction of shrimp hyperglycaemic and moulting inhibiting hormones (Sainz-Hernańdez et al, 2008) High energy demand (Racotta et al, 2003) Activation/reduction of immune related genes (Sainz-Hernańdez et al, 2008;Bae et al, 2013;Treerattrakool et al, 2014) Influence on metabolism of macronutrients (Racotta et al, 2003;Sainz-Hernańdez et al, 2008) Alteration of biochemical pathways (Racotta et al, 2003;Sainz-Hernańdez et al, 2008) Weight loss (Palacios et al, 1999b) Drop of haemocyanin and glucose in hepatopancreas (Palacios et al, 1999b) High broodstock mortality (Zacarias et al, 2019) Compromise offspring quality (e.g., decrease robustness to diseases) (Palacios et al, 1999a;Zacarias et al, 2021) suggested to play a role in the production without eyestalk ablation. Therefore, ablation of eyestalks may no longer be required, which would represent an important step towards improved animal welfare.…”

Section: Reported Effects References Positivementioning

confidence: 99%

Welfare in Farmed Decapod Crustaceans, With Particular Reference to Penaeus vannamei

et al. 2022

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The farming of decapod crustaceans is a key economic driver in many countries, with production reaching around 9.4 million tonnes (USD 69.3 billion) in 2018. These efforts are currently dominated by the farming of Pacific whiteleg shrimp, Penaeus vannamei, which translates into approximately 167 billion farmed P. vannamei being harvested annually. Further production growth is expected in the future and hence the need for more research into its health and welfare is required. Herein, from an extensive survey of the available literature, we scrutinise farming practices and the challenges associated with the production of P. vannamei from an animal-centric welfare perspective (1), we propose potential welfare indicators (2) and we critically review current scientific evidence of sentience in penaeid shrimp among other commercially important decapods (3), since it is plausible that in the near future not only the largest, but in fact all decapod crustaceans will receive welfare protection. This review highlights that despite the wide knowledge on crustacean stress physiology and immunology as well as disease control, still little is known about some key parameters related to the five welfare dimensions. We recommend that further research should focus on developing a systematic integrated welfare assessment encompassing all the different aspects of the crustaceans farming and life cycle up to slaughter. Furthermore, direct and indirect species-specific operational welfare indicators should be developed for all decapod crustaceans currently farmed, similar to the ones suggested in this review for P. vannamei.

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“…Beyond the stress and potential pain caused by handling and the procedure, eyestalk ablation can also impact the immune system of shrimp ( 90 ). Non-ablated broodstock females appear to perform at a similar level as ablated females, with larvae that are more resilient to typical pathogens and environmental stress ( 91 , 92 ). As eyestalk ablation carries negative health and welfare consequences, evaluation of alternatives could be beneficial.…”

Section: Opportunity 4: Reduce the Impact Of Invasive Procedures In A...mentioning

confidence: 99%

Perspective: Opportunities for advancing aquatic invertebrate welfare

et al. 2022

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Welfare considerations and regulations for invertebrates have lagged behind those for vertebrates, despite invertebrates comprising more than 95% of earth's species. Humans interact with and use aquatic invertebrates for exhibition in zoos and aquaria, as pets, research subjects, and important food sources. Recent research has indicated that aquatic invertebrates, in particular cephalopod mollusks and decapod crustaceans, experience stress and may be able to feel pain. With this article, we present results of a survey on attitudes of aquatic animal health professionals toward aquatic invertebrate welfare and provide practical recommendations for advancing aquatic invertebrate welfare across four areas of opportunity: use of anesthesia, analgesia, and euthanasia; development of less invasive diagnostic and research sampling methods based on 3R principles; use of humane slaughter methods for aquatic invertebrates; and reducing impacts of invasive procedures in aquaculture and fisheries. We encourage consideration of these opportunities to achieve far-reaching improvements in aquatic invertebrate welfare.

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Increased robustness of postlarvae and juveniles from non-ablated Pacific whiteleg shrimp, Penaeus vannamei, broodstock post-challenged with pathogenic isolates of Vibrio parahaemolyticus (VpAHPND) and white spot disease (WSD)

Cited by 12 publications

References 27 publications

Reproductive performance of Macrobrachium acanthurus (Crustacea, Palaemonidae) females subjected to unilateral eyestalk ablation

Reproductive performance of Macrobrachium acanthurus (Crustacea, Palaemonidae) females subjected to unilateral eyestalk ablation

Welfare in Farmed Decapod Crustaceans, With Particular Reference to Penaeus vannamei

Perspective: Opportunities for advancing aquatic invertebrate welfare

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