Toxicity of formalin for juvenile
 Centropomus viridis
 and
 in vitro
 efficacy against the parasite
 Rhabdosynochus
 sp. (Monogenea: Diplectanidae)

Morales-Serna, Francisco Neptalí; López-Moreno, Dania G.; Medina-Guerrero, Rosa María; Abad‐Rosales, Selene M.; Martínez-Brown, Juan Manuel; Ibarra‐Castro, Leonardo; Fájer-Ávila, Emma Josefina

doi:10.1111/jai.14077

Cited by 9 publications

(11 citation statements)

References 17 publications

(19 reference statements)

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“…Monogenean R. viridisi were obtained from the gills of juvenile C. viridis maintained in the Laboratory of Parasitology at the Centro de Investigación en Alimentación y Desarrollo (CIAD), Mazatlán, northwestern Mexico (Morales-Serna et al ., 2020). Prior to the present study, 10 samples of monogeneans ( n = 10) were randomly taken from ten individual fish contained in a single 400-l tank.…”

Section: Methodsmentioning

confidence: 99%

“…Monogeneans of the Diplectanidae family in particular pose a problem for the production of marine fish (Tokşen et al ., 2013; Andree et al ., 2015). Such is the case for Rhabdosynochus viridisi Montero-Rodríguez, Mendoza-Franco & López Téllez, 2020, a diplectanid species recently described as a threat to the pisciculture of Pacific white snook ( Centropomus viridis Lockington, 1877) in Mexico (Montero-Rodríguez et al ., 2020; Morales-Serna et al ., 2020).…”

Section: Introductionmentioning

confidence: 99%

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Mitochondrial genome of Rhabdosynochus viridisi (Monogenea: Diplectanidae), a parasite of Pacific white snook Centropomus viridis

et al. 2021

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We report the nearly complete mitochondrial genome of Rhabdosynochus viridisi – the first for this genus – achieved by combining shotgun sequencing of genomic and cDNA libraries prepared using low-input protocols. This integration of genomic information leads us to correct the annotation of the gene features. The mitochondrial genome consists of 13,863 bp. Annotation resulted in the identification of 12 protein-encoding genes, 22 tRNA genes and two rRNA genes. Three non-coding regions, delimited by three tRNAs, were found between the genes nad5 and cox3. A phylogenetic analysis grouped R. viridisi with three other species of diplectanid monogeneans for which mitochondrial genomes are available.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mitochondrial genome of Rhabdosynochus viridisi (Monogenea: Diplectanidae), a parasite of Pacific white snook Centropomus viridis

et al. 2021

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“…Kouril and Prikryl (1988) reported 15 min‐LC 50 of formalin of 1.2 mg/L for Tinca tinca . For Centropomus viridis juveniles, the 12 h‐LC 50 of formalin was 495.4 mg/L (Morales‐Serna et al, 2020).…”

Section: Acute Toxicity Of Formalin In Freshwater and Marine Fish Spementioning

confidence: 99%

“…In general, alterations in behaviour are related to changes in physiological and histomorphological functions of fish exposed to formalin. Behavioural alterations reported for fish species exposed to lethal or sublethal concentration of formalin include: jumping due to skin irritation, agitation, respiratory distress, loss of balance, erratic swimming, lethargy, exophthalmia, crowding on the water surface, loss of hydrodynamic equilibrium, spasms, agonistic confrontation, darkening of the body, sudden and quick movement and excessive accumulation of mucus (Andem et al, 2015; Andrade et al, 2005; Andrade‐Porto et al, 2018; Ayuba et al, 2013; Intorre et al, 2007; Jimmy et al, 2013; Mohammed et al, 2012; Morales‐Serna et al, 2020; Nam & Heo, 2004; Nouh & Selim, 2013; Okomoda et al, 2010; Pahor‐Filho et al, 2015; Perera & Pathiratne, 2005; Santos et al, 2012; Sultana et al, 2013; Tancredo, Ferrarezi, et al, 2019). Many of these behavioural problems are related to reduced oxygen consumption (Mohammed et al, 2012), perhaps due to damages in the gill epithelium from exposure to formalin.…”

Section: Acute Toxicity Of Formalin In Freshwater and Marine Fish Spementioning

confidence: 99%

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Toxicity, physiological, histopathological and antiparasitic effects of the formalin, a chemotherapeutic of fish aquaculture

Tavares‐Dias¹

2021

Aquaculture Research

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The search for more effective methods and drugs to control parasites in fish farming is constant. Several studies have evaluated the effects of formalin in freshwater and marine fish and their parasites. Thus, this paper focuses on the major toxicological aspects of this chemotherapeutic including growth performance, histopathological damages, haematological and biochemical alterations, and antiparasitic efficacy. Acute toxicity (LC50—96 h) to formalin sulphate vary widely among fish species (0.1–640.0 mg/L) depending on various factors, as many fish species are sensitive to concentrations near those required for controlling and treating parasites. The toxicity of formalin on some metabolic processes leads to disturbances and imbalances to various physiological functions, particularly respiration and haematological and biochemical processes, due to histopathological damages in gills and haematopoietic organs. Formalin often affects the gills, liver, kidney and spleen, and in the gills provokes an increase in mucus and chloride cells, hyperplasia and/or hypertrophy of lamellae and epithelial lifting. Formalin used in therapeutic baths is extremely effective against various protozoan and monogenean species, which are parasites that infect gills, skin and/or fins of farmed freshwater and marine fish.

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New Species of Rhabdosynochus Mizelle and Blatz 1941 (Monogenoidea: Diplectanidae) From the Gills of the Cultured Centropomus viridis (Perciformes) in the Mexican Eastern Tropical Pacific

Montero-Rodríguez

Mendoza‐Franco

Téllez³

2020

Acta Parasit.

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Purpose There are currently nine monogenoidean species of Rhabdosynochus infecting the gill lamellae of wild and cultured centropomid fishes from tropical and subtropical waters of the western Atlantic and eastern Pacific Oceans. The purpose of the present study was to describe the morphological distinctiveness of two new species of Rhabdosynochus found on the cultured Centropomus viridis collected from floating cages from the Mexican eastern Tropical Pacific in 2018. Methods monogenoideans were fixed with 4-5% formalin solution, observed and measured as temporary or permanent mounts stained with Gomori's trichrome, and mounted in Canada balsam. Other specimens were mounted on slides using a mixture of lactic acid (LA) and glycerin-ammonium picrate (GAP) and then remounted in Canada balsam to obtain measurements of the haptoral structures and copulatory complex. Illustrations were prepared with the aid of a drawing tube using a Leica microscope DM 2500 with Nomarski interference contrast. Results Rhabdosynochus viridisi n. sp. is mainly differentiated from all other congeneric species in the shape and size of their copulatory complexes, i.e.

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Toxicity of formalin for juvenile Centropomus viridis and in vitro efficacy against the parasite Rhabdosynochus sp. (Monogenea: Diplectanidae)

Abstract: Medina-Guerrero RM, et al. Toxicity of formalin for juvenile Centropomus viridis and in vitro efficacy against the parasite

Cited by 9 publications

References 17 publications

Mitochondrial genome of Rhabdosynochus viridisi (Monogenea: Diplectanidae), a parasite of Pacific white snook Centropomus viridis

Mitochondrial genome of Rhabdosynochus viridisi (Monogenea: Diplectanidae), a parasite of Pacific white snook Centropomus viridis

Toxicity, physiological, histopathological and antiparasitic effects of the formalin, a chemotherapeutic of fish aquaculture

New Species of Rhabdosynochus Mizelle and Blatz 1941 (Monogenoidea: Diplectanidae) From the Gills of the Cultured Centropomus viridis (Perciformes) in the Mexican Eastern Tropical Pacific

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