A successful nonnative fish in a lentic environment of the upper parana river basin more by mayara neves and rosilene luciana delariva. Plagioscion squamosissimus iquitensis nakashima syn. Marine incursions, cryptic species and article ecological. In this work, a novel biocomposite coating was synthesised by mixing pcl with layers of calcium phosphate hydroxyapatite, brushite and monetite from a biomineral called otolith extracted from teleost fish plagioscion squamosissimus and multiwalled carbon nanotubes in different concentrations 0. Keid nolan silva sousa universidade federal do oeste do. Plagioscion squamosissimus, fish larvae, morphology, larval development, itaipu the family sciaenidae, object of this study, has a marine origin, being represented by the generapachyurus agassiz, 1829, pachypops gill, 1861 and plagioscion gill, 1861 in fresh water fowler 1954. Cacao receives a portion of a large corvina plagioscion squamosissimus, a fish from firecat. The influence of seasonality, fish size and reproductive status on erod activity in plagioscion squamosissimus. Within the plagioscion clade, however, two putative of the miocene around 15 ma. This study on plagioscion squamosissimus in the amazon is the first report of seasonal changes in sound parameters in a fish from the tropics. Ontogenetic shifts in digestive tract morphology and diet of. Effects of a supraseasonal drought on the ecological.
Media in category plagioscion squamosissimus the following 5 files are in this category, out of 5 total. Sciaenidae is considered piscivorous and is a generalist species endemic to the amazon region. Curvines, plagioscion squamosissimus heckel, 1940, were caught in the itaipu reservoir brazil from november 1983 through february 1989, using stationary nets of mesh size 316 cm, measured between opposite knots. This fish is an important part of the natural ecosystems in which it occurs and provides basic functional components in the food web.
Larger pdf files can be downloaded from our webspace. Blood cell micronuclei mn and other nuclear abnormalities na evaluated in the plagioscion squamosissimus groups experimental and control. Plagioscion squamosissimus, heckel, 1840, sciaenidae, perciformes, commonly known as curvina, is considered carnivorous in its natural habitat in the amazon basin. These records and other reports on nonnative fishes suggest favorable environmental conditions for the establishment of invasive species in this drainage. A total of 263 sagittal otoliths were used to estimate size at first maturity of females of p. Hosted by the usgs core science analytics and synthesis. We observed teeth in the jaws and pharynx in young of. In the lower amazon, the species plagioscion squamosissimus, popularly known as silver croaker, is one of the main commercial fish of the region. Pdf the reproductive biology of plagioscion squamosissimus. The abundance of the species was evaluated with the catch per unit effort cpue metric and then correlated with.
Implications for biomonitoring of tropicalsubtropical reservoirs author links open overlay panel alison c. The aim of this study was to evaluate the effect of a supraseasonal drought on the ecological attributes of plagioscion squamosissimus. The captures were made with gillnets with meshes varying. Implications for biomonitoring of tropicalsubtropical reservoirs.
Initial assessments of the recreational and commercial fisheries potential of the reservoir documented 68 species, the most important biomass being prochilodus rubrotaeniatus, plagioscion. Population parameters of corvina plagioscion squamosissimus in. This study aimed to characterize oocyte organization and maturation stages of plagioscion squamosissimus ovary. Cacao receives a portion of a large corvina plagioscion squamosissimus from firecat. Metazoan parasites of plagioscion squamosissimus heckel, 1840. Diet composition of plagioscion squamosissimus heckel, 1840. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Plagioscion squamosissimus is a plain living and sedentary fish, strictly limited to white.
The objective of this study was to evaluate the reproductive biology of that species commercialized in santarempa in order to quantify the sex ratio, determine the reproductive period, and estimate. In the first study of plagioscion squamosissimus in cages culture, different culture. Diet composition of plagioscion squamosissimus heckel, 1840, a fish introduced into the tiete river system. When requesting a correction, please mention this items handle. Pdf revision of the south american freshwater genus plagioscion. We described the dental structures, the gill rakers and the digestive tract, and analyzed the diet of the young fish. Vergleichende wachstumsuntersuchungen an zwei sciaenidenarten. Investigation into the cytotoxicity and mutagenicity of. Jun, 2012 plagioscion squamosissimus has no close phylogenetic relationships with native predatory sciaenid fishes of this region, which may favor its success. Plagioscion squamosissimus heckel, 1840 references edit plagioscion squamosissimus taxon details on integrated taxonomic information system itis.
Both diets indicated a strong correlation among the food items. The ecology of the native sciaenid, pachyurus adspersus steindachner, 1879 is unknown, but it is usually caught with earthworms as bait, suggesting that this species is a bottom feeder. Infection levels of austrodiplostomum compactum digenea. See general information about how to correct material in repec for technical questions regarding this item, or to correct its authors, title, abstract.
Cacao can be identified by the few spots on her chest and her pink left ear. In laboratory, after obtaining the biometric data, fishes were opened and the guts extracted. Infection levels of austrodiplostomum compactum digenea, diplostomidae metacercariae in plagioscion squamosissimus teleostei, sciaenidae from the nova avanhandava reservoir, sao paulo state, brazil volume 84 issue 3. It involves a gradual differentiation process of spermatids that is characterized mainly by chromatin compaction in the nucleus and formation of the flagellum, resulting in the spermatozoa, the smallest germ cells. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. This may reflect differences in the feeding habits of the 3 species of hosts. Effects of a supraseasonal drought on the ecological attributes of. A giant otter pteronura brasiliensis called firecat shares food with another one called cacao. Danielle peretti universidade do estado do rio grande do.
The results are expressed as the median valuesq1q3. Plagioscion squamosissimus heckel, 1840 was studied in five stretches in paranapanema and tibagi rivers under the influence of the capivara reservoir. Plagioscion are predatory fish and one should not underestimate the broad mouth. Diet composition of plagioscion squamosissimus heckel. Plagioscion montei soares and casatti, 2000 species. Parachromis managuensis pdf plagioscion squamosissimus ficha tecnica mojarra pinta parachromis. The south american silver croaker, plagioscion squamosissimus heckel, 1840, is a carnivorous. Results stomach contents of 258 specimens of plagioscion squamosissimus were analysed and 184 stomachs were found to contain food, while 74 were empty. Carnivore species pescada branca plagioscion squamosissimus and apapa pellona castelnaeana and noncarnivore species pacu mylossoma duriventre and aracu schizodon fasciatus were consumed by 22, 19, 55 and 25 % of people, respectively, and the mean mercury concentrations within fish flesh were 1.
Become a biotope scientist to increase the scientific knowledge on aquatic biotopes and share your data with biotope aquarium community. The aim of this study was to evaluate the effect of a supraseasonal drought on the ecological attributes of. Feeding of introduced species of cichla perciformes. Diet composition of plagioscion squamosissimus core. Occupies very diverse biotopes and carries out its biological cycle in freshwater as well as in brackish water ref. Juveniles feed on larvae of crustaceans especially macrobrachium, aquatic insects and copepods. The influence of seasonality, fish size and reproductive. Plagioscion pauciradiatus steindachner, 1917 species. The new species shares with therodamas elongatus thatcher, 1986 the same host, a similar reaction from the host to the presence of the parasites, and the same general shape of body. The two new invasive perciform fishes, plagioscion squamosissimus heckel 1840 and parachromis managuensis gunther 1867 were collected in caratinga and rio doce municipalities. Plagioscion squamosissimus, south american silver croaker. A new species of croaker plagioscion perciformes, sciaenidae.
A comparative growth analysis of two sciaenid species plagioscion squamosissimus heckel and plagioscion monti soares in different water types of the central amazon. However, it is not a legal authority for statutory or regulatory purposes. Ninetyeight species of freshwater fishes belonging to 22 families were examined for helminths. Population parameters of corvina plagioscion squamosissimus in the barra bonita reservoir, brazil. Page designed through the cooperative efforts of interagency itis teams. Spatiotemporal variability and sound characterization in. Comparative parasitism of the fish plagioscion squamosissimus. Eggs and larvae of the curvina plagioscion squamosissimus heckel, 1840.
Pdf spatiotemporal variability and sound characterization. The present study aimed to analyse the feeding habits of this species in bariri reservoir and to verify the possible occurrence of ontogenetic changes in its diet composition. Pdf ultrastructure of spermiogenesis in plagioscion. Fish approved by bapexperts it will appear among other fishes on. Download fulltext pdf download fulltext pdf read fulltext. Investigation into the cytotoxicity and mutagenicity of the.
The significance of the values obtained was verified using the chisquare test of critical values. Remarkable ontogenetic change was noted in both species diet. Plagioscion squamosissimus sciaenidae and parachromis. Plagioscion squamosissimus heckel, 1840, known in the region as curvina, is a species originally from the amazon basin and was introduced into northeastern reservoirs in the 1940s, with the objective of using the available lentic environments and enlarging the supply of quality fish in the region fontenele, 1978. Methods using nuclear and mitochondrial dna sequence data, phylogenetic analyses were conducted on the. The abundance of the species was evaluated with the catch per unit effort cpue metric and then correlated. Become a biotope scientist to increase the scientific knowledge on aquatic biotopes and share your data with. The aim of this study is to report the occurrence of metacercariae of austrodiplostomum compactum in plagioscion squamosissimus nonnative fish species. Initially, this species was introduced into northeastern brazil, and was subsequently released by the energy company of sao paulo cesp in 1967 in the pardo river where it spread. Plagioscion squamosissimus belongs gerais state, brazil. Use of otoliths to estimate size at sexual maturity in fish. They were reared under natural light to the perciformes order, the largest order of vertebrates, regimen yearly range. We analyzed the ontogenetic shifts in digestive tract morphology and diets of the young of iheringichthys labrosus, hypophthalmus edentatus and plagioscion squamosissimus, sampled in the itaipu reservoir, brazilparaguay. Functional evaluation and testing of a newly developed.
Plagioscion squamosissimus heckel, 1840 osteichthyes. Larvae of plagioscion squamosissimus heckel, 1840 from itaipu reservoir. All material on this site has been provided by the respective publishers and authors. They are found in tropical and subtropical south america where they inhabit fresh and brackish waters. Ecology and status of piscivores in gun, an oligotrophic. Plagioscion squamosissimus name synonyms diplolepis squamosissimus heckel, 1840 johnius amazonicus castelnau, 1855 johnius crouvina castelnau, 1855 plagioscion amazonicus castelnau, 1855 plagioscion francisci steindachner, 1917 plagioscion squamosissimus iquitensis nakashima, 1941 sciaena squamosissima heckel, 1840. Eggs and larvae of the curvina plagioscion squamosissimus. Samples were collected bimonthly in pedra reservoir, contas river ba, between november 2004 and september 2006. The confidence interval for the regression coefficients in the 95 torange.
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