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Fernando L. Mantelatto - One of the best experts on this subject based on the ideXlab platform.
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Multigene phylogeny and taxonomic revision of American shrimps of the genus Cryphiops Dana, 1852 (Decapoda, Palaemonidae) implies a proposal for reversal of precedence with Macrobrachium Spence Bate, 1868
'Pensoft Publishers', 2021Co-Authors: Fernando L. Mantelatto, Leonardo G. Pileggi, João A. F. Pantaleão, Célio Magalhães, José Luis Villalobos, Fernando AlvarezAbstract:The freshwater shrimp genus Cryphiops Dana, 1852 has a disjunct distribution in North (Mexico) and South (Brazil, Chile) America, and is composed of only six species. The current classification of genera in the Palaemonidae is controversial, based on variable morphological characters, and still far from a clear definition. Cryphiops differs from the speciose genus Macrobrachium Spence Bate, 1868 only by the absence of the hepatic spines on the carapace. Previous studies with a limited dataset suggested the necessity to link morphology and phylogeny to create an internal rearrangement in the genus to resolve the paraphyletic status. Through a molecular phylogenetic approach, the evolutionary relationships are inferred based on four (mitochondrial and nuclear) genes, among all recognized species of Cryphiops and, in combination with a taxonomic revision, a rearrangement in the systematics of the genus is suggested. The absence of hepatic spines on the carapace, the only character used to separate the genus Cryphiops, is subjective and should be considered as a homoplasy. This implies that Cryphiops and Macrobrachium are subjective synonyms and, because the latter genus is much more diverse and widely known, with several economically important species, to avoid confusion and disturbance in nomenclatural stability and keep universality, a proposal for the priority of the older synonym (Cryphiops) to be partially suppressed in favor of maintaining the prevailing use of the younger synonym (Macrobrachium) is presented. As the species of Cryphiops should be accommodated in the genus Macrobrachium, new names to replace three preoccupied specific names that, by this action, resulted to be secondary homonyms are offered
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molecular perspective on the american transisthmian species of Macrobrachium caridea palaemonidae
ZooKeys, 2014Co-Authors: Leonardo G. Pileggi, Natália Rossi, Ingo S. Wehrtmann, Fernando L. MantelattoAbstract:The closure of the Isthmus of Panama (about 3.1 million years ago) separated previously continuous populations and created two groups of extant species, which live now in the Pacific and Atlantic drainage systems. This relatively recent event was a trigger to diversification of various species in the Neotropics, nonetheless there are exemplars that do not show sufficient morphologic variability to separate them by traditional morphological tools. About 60 years ago, some freshwater decapod species with high morphological similarity were separate by previous researchers, based on geographical distribution, in Pacific and Atlantic and considered as “sister species”. However, the complete isolation of these prawns by this geographical barrier is questionable, and it has generated doubts about the status of the following transisthmian pairs of sibling species: Macrobrachium occidentale × Macrobrachium heterochirus, Macrobrachium americanum × Macrobrachium carcinus, Macrobrachium digueti × Macrobrachium olfersii, Macrobrachium hancocki × Macrobrachium crenulatum, Macrobrachium tenellum × Macrobrachium acanthurus and Macrobrachium panamense × Macrobrachium amazonicum. Here we evaluated the relation among these pairs of sibling species in a molecular phylogenetic context. We generated 95 new sequences: 26 sequences of 16S rDNA, 25 of COI mtDNA and 44 of 18S nDNA. In total, 181 sequences were analyzed by maximum likelihood phylogenetic method, including 12 Macrobrachium transisthmian species, as well as seven other American Macrobrachium species, and two other palaemonids. Our analysis corroborated the morphological proximity of the sibling species. Despite the high degree of morphological similarities and considerable genetic diversification encountered among the transisthmian sister species, our data support the conclusion that all species included in sibling groups studied herein are valid taxonomic entities, but not all pairs of siblings form natural groups.
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molecular data raise the possibility of cryptic species in the brazilian endemic prawn Macrobrachium potiuna decapoda palaemonidae
Latin American Journal of Aquatic Research, 2013Co-Authors: Fabricio L Carvalho, Leonardo G. Pileggi, Fernando L. MantelattoAbstract:A recent taxonomic revision indicated that Macrobrachium potiuna, an endemic prawn in Brazilian freshwater drainages, exhibits wide morphological variability...
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reproductive variability of the amazon river prawn Macrobrachium amazonicum caridea palaemonidae influence of life cycle on egg production
Latin American Journal of Aquatic Research, 2013Co-Authors: Wagner Cotroni Valenti, Andrea L Meireles, Fernando L. MantelattoAbstract:Diverse reproductive strategies may be adopted by different species of Macrobrachium prawns , and even among different populations of the same species. The present study evaluated the influence of differences in the reproductive strategies of two geographically isolated populations of Macrobachium amazonicum , upon female fecundity, reproductive output and the chemical content of prawns and eggs. One prawn population from Para only completes its life cycle in brackish water, whereas another from Mato Grosso do Sul only inhabits freshwater. Para female prawns exhibited a larger average size and weight and produced more eggs than females from Mato Grosso do Sul. However, the Mato Grosso do Sul population produced eggs that were larger in volume than those of females from the other population. Furthermore, eggs produced by Para prawns were composed primarily of water (56%), whereas those produced in Mato Grosso do Sul were composed mostly of organic matter (80%). This difference in the eggs’ chemical compositions did not apply to the chemical compositions of the females, as individuals from both sites were composed primarily of water. Mato Grosso do Sul females invested a higher amount of energy in brood formation (14% of their wet weight) than individuals from Para (only 10%). It is possible that M. amazonicum populations show a higher degree of plasticity in their reproductive activity due to habitat conditions and genetic differences. Although the brackish population produces larger individuals, and exhibits higher fecundity, the freshwater population exhibited a higher reproductive investment. These results suggest a high reproductive capacity to adapt to different environmental conditions for this species, which should be considered in the context of aquaculture activities.
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reproductive variability of the amazon river prawn Macrobrachium amazonicum caridea palaemonidae influence of life cycle on egg production
Latin American Journal of Aquatic Research, 2013Co-Authors: Wagner Cotroni Valenti, Andrea L Meireles, Fernando L. MantelattoAbstract:Diversas estrategias reproductivas pueden ser adoptadas por distintas especies de camarones del genero Macrobrachium, e incluso entre diferentes poblaciones de la misma especie. En el presente estudio se evaluo la influencia de las diferencias en las estrategias reproductivas de dos poblaciones de Macrobachium amazonicum, geograficamente aisladas, sobre la fecundidad, rendimiento reproductivo y composicion quimica de los camarones y sus huevos. Una poblacion de camarones de agua dulce de Para solo completa su ciclo de vida en agua salobre mientras, que otra de Mato Grosso do Sul solo habita en aguas dulces. Las hembras de la poblacion de Para presentaron, en promedio, mayores tamanos y mayor peso y producen mas huevos que las hembras de Mato Grosso do Sul. Sin embargo, la poblacion de Mato Grosso do Sul produjo huevos que eran mas grandes en volumen que aquellos de las hembras de la otra poblacion. Aun mas, los huevos producidos por hembras de la poblacion de Para contenian mayor cantidad de agua (56%), mientras que aquellos producidos por las hembras de Mato Grosso do Sul se componen sobre todo de materia organica (80%). Esta diferencia en la composicion quimica de los huevos no se aplicaba a la composicion quimica de las hembras, ya que individuos de ambos sitios estaban compuestos principalmente de agua. Las hembras de Mato Grosso do Sul invirtieron una mayor cantidad de energia en la puesta (14% de peso humedo) que las hembras de Para (solo 10%). Es posible que las poblaciones de M. amazonicum muestren un mayor grado de plasticidad en su actividad reproductiva debido a las condiciones del medio y a diferencias geneticas. Aun cuando la poblacion estuarina produce individuos mas grandes y presenta mayor fecundidad, la poblacion de agua dulce presenta una inversion reproductiva mayor. Estos resultados sugieren una alta capacidad reproductiva de adaptacion a diferentes condiciones ambientales para esta especie, que debe ser considerada en el contexto de las actividades de acuicultura.
J R Bonami - One of the best experts on this subject based on the ideXlab platform.
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rapid detection of Macrobrachium rosenbergii nodavirus mrnv and extra small virus xsv the pathogenic agents of white tail disease of Macrobrachium rosenbergii de man by loop mediated isothermal amplification
Journal of Fish Diseases, 2006Co-Authors: D Pillai, J R Bonami, Sri J WidadaAbstract:: A loop-mediated isothermal amplification (LAMP) procedure is described for rapid diagnosis of white tail disease, a viral disease caused by Macrobrachium rosenbergii nodavirus (MrNV) and extra small virus (XSV), in the giant freshwater prawn, Macrobrachium rosenbergii. This method was more sensitive than conventional RT-PCR for detecting the two viruses. A set of four primers, two outer and two inner, were designed for MrNV detection. An additional pair of loop primers was also used in an accelerated LAMP reaction for detection of XSV. Time and temperature conditions were optimized for detection of the two viruses. The LAMP reaction is highly suited for disease diagnosis in developing countries as amplification of DNA can be detected without the use of agarose gel electrophoresis, by the production of whitish precipitate of magnesium pyrophosphate as a by-product.
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studies on the occurrence of Macrobrachium rosenbergii nodavirus and extra small virus like particles associated with white tail disease of m rosenbergii in india by rt pcr detection
Aquaculture, 2004Co-Authors: A Sahul S Hameed, Sri J Widada, Kalidoss Yoganandhan, J R BonamiAbstract:A new disease similar to whitish tail disease (WTD) was observed in larvae and post-larvae of Macrobrachium rosenbergii in hatcheries and nursery ponds located at Nellore, Vijayawada and Chennai, India. Reverse transcriptase polymerase chain reaction (RT-PCR) assay on these samples revealed the presence of Macrobrachium rosenbergii nodavirus (MrNV) and extra small virus (XSV) in infected larvae and post-larvae, as reported in China. Published primers and self-designed primers specific for MrNV were tested and compared for sensitivity with MrNV samples collected in India. Our designed primer sets 4 and 2 gave amplicons of 425 and 590 bp, respectively, with improved sensitivity to the level of 0.25 fg of total RNA when compared to 25 fg of total RNA for the previously published method. XSV detection was based on a recently published RT-PCR protocol. This is the first report on the occurrence of MrNV and XSV in WTD of freshwater prawn from India.
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characteristics of the monocistronic genome of extra small virus a virus like particle associated with Macrobrachium rosenbergii nodavirus possible candidate for a new species of satellite virus
Journal of General Virology, 2004Co-Authors: Joannes Sri Widada, J R BonamiAbstract:White tail disease (WTD) causes a high mortality rate in the freshwater prawn Macrobrachium rosenbergii. The pathogenic agent is a small virus, 25 nm in diameter, Macrobrachium rosenbergii nodavirus (MrNV), associated with extra small virus (XSV), a virus-like particle,15 nm in diameter. Sequencing of the XSV genome showed that it consists of a linear single-stranded RNA of 796 nucleotides, encoding a single structural protein, the capsid CP-17. The genome is in sense orientation, ended by a short poly(A) tail at the 3′-end. Sequence comparison did not allow XSV to be affiliated to known virus families. The hypothesis that XSV is a satellite virus, such as those described in the plant kingdom, is put forward based on its characteristics. It would constitute, therefore, the first satellite virus associated with a nodavirus.
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extra small virus like particles xsv and nodavirus associated with whitish muscle disease in the giant freshwater prawn Macrobrachium rosenbergii
Journal of Fish Diseases, 2003Co-Authors: D Qian, I Cambournac, L Li, S Zhang, J R BonamiAbstract:A disease of Macrobrachium rosenbergii, the giantfreshwater prawn, farmed in China was recentlyrecorded in Zhejiang, Jiangsu, Shanghai, Guangxiand Guangdong provinces. The clinical sign of thedisease, which develops in post-larvae (PL), is awhitish appearance of the muscles, particularlynoticeable in the abdomen. Mortalities may reach100% in some hatcheries. Investigations by trans-mission electron microscopy after negative stainingof diseased PL homogenates showed the presence oftwo types of viral particles: one, unenveloped,icosahedral in shape, 26–27 nm in diameter, thesecond, much smaller, about 14–16 nm in diam-eter, designated extra small virus particle (XSV).The large virus has a genome with two pieces ofssRNA (RNA-1 and RNA-2), of 3 and 1.2 kb,respectively. Hybridization tests confirmed that thislarge virus is closely related to M. rosenbergiinodavirus (MrNV) which was isolated from dis-eased prawns in a hatchery in the French WestIndies. Its very small size and hypothesized bio-chemical and biological characteristics suggest XSVis a new type of crustacean virus. As XSV has alwaysbeen found associated with the larger virus (noda-virus) and is located in muscle and connective cellsof diseased animals, it could be an autonomousvirus, a helper-type virus or a satellite-like virus.Keywords: Macrobrachium rosenbergii, MrNV,nodavirus, RNA viruses, whitish muscle disease,extra small virus.
Patrick Sorgeloos - One of the best experts on this subject based on the ideXlab platform.
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the effect of poly β hydroxybutyrate on larviculture of the giant freshwater prawn Macrobrachium rosenbergii
Aquaculture, 2010Co-Authors: Mathieu Wille, Peter Bossier, Peter De Schryver, Tom Defoirdt, Patrick SorgeloosAbstract:article i nfo In this study, we investigated the effect of poly β-hydroxybutyrate (PHB) on the culture performance of larvae of the giant freshwater prawn Macrobrachium rosenbergii and on the bacterial levels inside the larval gut. Instar II Artemia nauplii were cultured with or without PHB (5 g l �1 ) and/or a lipid emulsion rich in highly unsaturated fatty acids (HUFA) for 24 h. The effect of feeding PHB and/or HUFA-enriched Artemia nauplii on the performance of Macrobrachium larvae was investigated. Feeding larvae of the giant freshwater prawn with PHB-containing Artemia nauplii significantly increased survival and development of the larvae. Moreover, total bacterial counts and Vibrio spp. counts were found to be significantly lower in PHB-fed larvae when compared to control larvae, indicating that the PHB addition had a growth-inhibitory effect towards these potentially pathogenic microorganisms. Finally, a combination of PHB addition and lipid enrichment resulted in the best overall culture performance since it significantly improved larval survival as well as larval development. The optimal PHB concentration and formulation for bio-encapsulation into Artemia should be investigated further to increase the economical efficiency of Macrobrachium larval production. © 2010 Elsevier B.V. All rights reserved.
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comparison of reproductive performance and offspring quality of giant freshwater prawn Macrobrachium rosenbergii broodstock from different regions
Aquaculture, 2009Co-Authors: Mathieu Wille, Le Thanh Hung, Patrick SorgeloosAbstract:An experiment was conducted to compare the reproductive performance and offspring quality of Macrobrachium rosenbergii broodstock from four different sources: (1) Vietnam wild; (2) Vietnam pond- cultured; (3) Hawaii pond-cultured and (4) China pond-cultured M. rosenbergii females were individually followed for 180 days in three 1200-l fresh water recirculation systems and fed a commercial diet. Ovarian development, moulting and spawning events were checked daily. In addition a number of egg and larval quality parameters were determined. The breeding frequency, fecundity, egg laying success rate, egg dimensions and egg hatchability were not significantly different between animals from the four different sources. However, there were significant differences in terms of offspring quality between the different broodstock sources. Individual dry weight, larval development rate, time to reach the postlarval stage, postlarval survival and tolerance to ammonia toxicity were all better in the offspring originating from China pond-reared and Vietnam pond-reared broodstock sources compared to those originating from Vietnam wild and Hawaii pond-reared sources. Moreover, offspring quality from Chinese and Vietnamese pond-reared broodstock proved more stable in terms of ammonia tolerance over three consecutive reproduction cycles. In general, the pond-reared broodstock from China and from Vietnam resulted in better offspring quality than the Hawaii pond-reared and Vietnam wild broodstock. These results indicate that broodstock sourcing deserves proper attention in hatchery operations of M. rosenbergii. It furthermore proves that domesticated (pond-reared) animals are not necessarily inferior as breeders compared to wild-sourced animals. The results may also point out the potential to selectively breed stocks with improved characteristics adapted to the local culture environment. © 2009. Author Keywords: Broodstock origin; Larval quality; Macrobrachium rosenbergii; Reproduction Index Keywords: artificial diet; brood stock; commercial activity; comparative study; experimental culture; fecundity; hatching; rearing; reproductive cycle; reproductive productivity; shrimp culture; survival; Asia; China; Eurasia; Far East; Hawaii (United States); North America; Southeast Asia; United States; Viet Nam; Animalia; Macrobrachium rosenbergii
Leigh Owens - One of the best experts on this subject based on the ideXlab platform.
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experimental infection of redclaw crayfish cherax quadricarinatus with Macrobrachium rosenbergii nodavirus the aetiological agent of white tail disease
Aquaculture, 2011Co-Authors: Orachun Hayakijkosol, K La Fauce, Leigh OwensAbstract:Macrobrachium rosenbergii nodavirus (MrNV) or white tail disease has been reported as a new disease of crustacea in western Queensland, Australia. In Australia, Macrobrachium can be hard to source due to their need for a saltwater environment for breeding. No alternative animal experimental model for MrNV has been identified, so redclaw crayfish (Cherax quadricarinatus) were tested as a potential experimental animal in order to study MrNV infection. The highest mortality (35%) was in the groups injected with MrNV and the lowest mortality (0%) was in the control groups. Necrotic muscle and muscle degeneration with haemocytic infiltration were observed in infected crayfish. For the first time, a quantitative real-time polymerase chain reaction (qPCR) on clinical material was developed and it confirmed MrNV infection in infected animals. The mean viral titres (2.73 × 102 copies) and cycle times (Ct = 31.33) lead us to hypothesize that MrNV only poorly replicates in juvenile C. quadricarinatus. However, C. quadricarinatus may be a less than perfect but useable experimental animal model for MrNV infection in the future because of clinical signs, gross lesions, histopathological changes and qPCR titres present in experimentally infected C. quadricarinatus. This study determined that redclaw crayfish (C. quadricarinatus) had low susceptibility and were limited carriers of white tail disease.
Mathieu Wille - One of the best experts on this subject based on the ideXlab platform.
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the effect of poly β hydroxybutyrate on larviculture of the giant freshwater prawn Macrobrachium rosenbergii
Aquaculture, 2010Co-Authors: Mathieu Wille, Peter Bossier, Peter De Schryver, Tom Defoirdt, Patrick SorgeloosAbstract:article i nfo In this study, we investigated the effect of poly β-hydroxybutyrate (PHB) on the culture performance of larvae of the giant freshwater prawn Macrobrachium rosenbergii and on the bacterial levels inside the larval gut. Instar II Artemia nauplii were cultured with or without PHB (5 g l �1 ) and/or a lipid emulsion rich in highly unsaturated fatty acids (HUFA) for 24 h. The effect of feeding PHB and/or HUFA-enriched Artemia nauplii on the performance of Macrobrachium larvae was investigated. Feeding larvae of the giant freshwater prawn with PHB-containing Artemia nauplii significantly increased survival and development of the larvae. Moreover, total bacterial counts and Vibrio spp. counts were found to be significantly lower in PHB-fed larvae when compared to control larvae, indicating that the PHB addition had a growth-inhibitory effect towards these potentially pathogenic microorganisms. Finally, a combination of PHB addition and lipid enrichment resulted in the best overall culture performance since it significantly improved larval survival as well as larval development. The optimal PHB concentration and formulation for bio-encapsulation into Artemia should be investigated further to increase the economical efficiency of Macrobrachium larval production. © 2010 Elsevier B.V. All rights reserved.
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comparison of reproductive performance and offspring quality of giant freshwater prawn Macrobrachium rosenbergii broodstock from different regions
Aquaculture, 2009Co-Authors: Mathieu Wille, Le Thanh Hung, Patrick SorgeloosAbstract:An experiment was conducted to compare the reproductive performance and offspring quality of Macrobrachium rosenbergii broodstock from four different sources: (1) Vietnam wild; (2) Vietnam pond- cultured; (3) Hawaii pond-cultured and (4) China pond-cultured M. rosenbergii females were individually followed for 180 days in three 1200-l fresh water recirculation systems and fed a commercial diet. Ovarian development, moulting and spawning events were checked daily. In addition a number of egg and larval quality parameters were determined. The breeding frequency, fecundity, egg laying success rate, egg dimensions and egg hatchability were not significantly different between animals from the four different sources. However, there were significant differences in terms of offspring quality between the different broodstock sources. Individual dry weight, larval development rate, time to reach the postlarval stage, postlarval survival and tolerance to ammonia toxicity were all better in the offspring originating from China pond-reared and Vietnam pond-reared broodstock sources compared to those originating from Vietnam wild and Hawaii pond-reared sources. Moreover, offspring quality from Chinese and Vietnamese pond-reared broodstock proved more stable in terms of ammonia tolerance over three consecutive reproduction cycles. In general, the pond-reared broodstock from China and from Vietnam resulted in better offspring quality than the Hawaii pond-reared and Vietnam wild broodstock. These results indicate that broodstock sourcing deserves proper attention in hatchery operations of M. rosenbergii. It furthermore proves that domesticated (pond-reared) animals are not necessarily inferior as breeders compared to wild-sourced animals. The results may also point out the potential to selectively breed stocks with improved characteristics adapted to the local culture environment. © 2009. Author Keywords: Broodstock origin; Larval quality; Macrobrachium rosenbergii; Reproduction Index Keywords: artificial diet; brood stock; commercial activity; comparative study; experimental culture; fecundity; hatching; rearing; reproductive cycle; reproductive productivity; shrimp culture; survival; Asia; China; Eurasia; Far East; Hawaii (United States); North America; Southeast Asia; United States; Viet Nam; Animalia; Macrobrachium rosenbergii
