WWW.WAS.ORG • WORLD AQUACULTURE • SEPTEMBER 2024 55 Olvera (CIAD-Mazatlán), Francis Isela MarrujoLópez (CIAD-Mazatlán), and María Isabel Abdo-de la Parra (CIAD-Mazatlán). * Corresponding author: izabelvvalles@gmail.com; Isabel.valles@ciad.mx rmedina@ciad.mx References Fajer-Ávila, E.J., I. MartínezRodríguez, M.I. Abdo de la Parra, L. ÁlvarezLajonchere, and M. Betancourt-Lozano. 2008. Effectiveness of freshwater treatment against Lepeophtheirus simplex (Copepoda: Caligidae) and Neobenedenia sp. (Monogenea: Capsalidae), skin parasites of bullseye fish, Sphoeroides annulatus reared in tanks. Aquaculture. 284 (1-4): 277-280. Hutson, K.S., A.J. Mooney, I. Ernst, A.K. Brazenor, M. Scheel, and J. Atalah. 2022. A decision support tool for parasite management in fish aquaculture. Reviews in Aquaculture. 14:1656–1670. Morales-Serna, F.N., M. Chapa-López, J.M. Martínez-Brown, L. Ibarra-Castro, R.M. Medina-Guerrero, and E.J. Fajer-Ávila.2018. Efficacy of praziquantel and a combination anthelmintic (Adecto®) in bath treatments against Tagia ecuadori and Neobenedenia melleni (Monogenea), parasites of bullseye puffer fish. Aquaculture. 492:361-368. Tubbs, L.A., C.W. Poortenaar, M.A. Sewell, and B.K. Diggles. 2005. Effects of temperature on fecundity in vitro, egg hatching and reproductive development of Benedenia seriolae and Zeuxapta seriolae (Monogenea) parasitic on yellowtail kingfsh Seriola lalandi. International Journal for Parasitology. 35:315–327. Valles-Vega, I., F. Ascencio, T. Sicard-González, C. Angulo, E.J. Fajer-Ávila, R.B. Inohuye-Rivera, and J.C. Pérez-Urbiola. 2019. Effects of temperature on the life cycle of Neobenedenia sp. (Monogenea: Capsalidae) from Seriola rivoliana (Almaco jack) in Bahía de La Paz. BCS Mexico. Parasitology Research. 118:3267–3277. muscle. Only cell necrosis, hyaline degeneration, congestion, and inflammatory response were observed in adjacent areas of the lesions, with a slight proliferation of bacteria in the damaged tissue. No parasites were found in the lesion, but other parasites were observed in other areas, such as the gills (see Figure 2 C, D, and E). Although no systemic bacterial infections were observed in the organs, various non-specific pathologies related to the immune system were present, such as the infiltration of macrophages and lymphocytes, which are cells that play a role in repairing damaged tissues. Among the most effective treatments are freshwater baths for 3 to 5 minutes. However, other treatments have been tried, such as praziquantel in combination with Adecto® (antihelminth), administered through baths (Fajer-Ávila et al. 2008; MoralesSerna et al. 2018). Our most recent studies in Almaco jack (Seriola rivoliana) include treatments with continual infestation of Neobenedenia sp. and others with cleaning periods. For example, the treatment with cleaning periods initially had an infestation of 31.2 parasites per fish, and at the end of the experiment, it was 14.2 parasites (see Figure 3). These findings suggest that the fish acquired protection after a first infestation with Neobenedenia sp. Future research by our team could use this knowledge to develop treatments that stimulate fish’s immune systems, aiming to create vaccines using monogenean lysates. Addressing this challenge requires collaboration between scientists, producers, and government authorities to ensure the sustainability of aquaculture. Notes Isabel Valles-Vega* CONAHCYT Postdoctoral Fellowship at the Center for Research in Food and Development, A.C. (CIADMazatlán), Rosa María Medina-Guerrero* (CIAD-Mazatlán), Selene María Abad-Rosales (CIAD-Mazatlán), Rodolfo LozanoFIGURE 3. Acquired protection of Seriola rivoliana after the first infestation with Neobenedenia sp. A) Probability of survival of Seriola rivoliana (blue line: no infestation; pink line: cleaning infestation; green line: continual infestation). B) Mean infestation intensity of Neobenedenia sp. in Seriola rivoliana across different treatments. CALLING ALL AQUACULTURE PROFESSIONALS AND STUDENTS DO YOU HAVE SOMETHING YOU WOULD LIKE TO CONTRIBUTE TO WORLD AQUACULTURE? We welcome general features, articles and news updates covering a variety of aquaculture-related topics, preferably well-illustrated with photographs and line art. Published quarterly, the magazine keeps WAS members and stakeholders around the world up to date with research results and reviews of aquaculture trends and topics. Guidelines for authors are available here, and manuscripts may be submitted directly to: ed.assistant@was.org or glutz@agcenter.lsu.edu.
RkJQdWJsaXNoZXIy MjExNDY=