Toxicogenetic effects on fish species in two sub-basins of the upper Paraguay river, Southern Pantanal – Brazil

Chemosphere ◽  
2021 ◽  
Vol 264 ◽  
pp. 128383
Author(s):  
Adriana Fernandes Riveros ◽  
Julio César Jut Solórzano ◽  
Isabelle de Almeida Monaco ◽  
Claudia Andrea Lima Cardoso ◽  
Yzel Rondon Súarez ◽  
...  
Keyword(s):  
Fish Species ◽  
Paraguay River

Length-weight relationships of 26 fish species from the streams of the upper section of the Paraguay River basin (Mato Grosso, Brazil)

2014 ◽  
Vol 31 (1) ◽  
pp. 225-227 ◽  
Author(s):  
V. A. Oliveira ◽  
S. M. Loverde-Oliveira ◽  
L. A. Mateus ◽  
F. Teixeira-de Mello
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Mato Grosso ◽  
Paraguay River

scholarly journals Parasitism by argulids (Crustacea: Branchiura) in piranhas (Osteichthyes: Serrasalmidae) captured in the Caiçara bays, upper Paraguay River, Pantanal, Mato Grosso state, Brazil

2012 ◽  
Vol 10 (3) ◽  
pp. 653-659 ◽  
Author(s):  
Márcio Fontana ◽  
Ricardo Massato Takemoto ◽  
José Celso de Oliveira Malta ◽  
Lúcia Aparecida de Fátima Mateus
Keyword(s):  
River Basin ◽  
Body Length ◽  
Fish Species ◽  
Host Species ◽  
Condition Factor ◽  
Hydrological Cycle ◽  
Mato Grosso ◽  
Paraguay River ◽  
Relative Condition Factor ◽  
Pygocentrus Nattereri

In this study, 446 fishes were analyzed: 190 Pygocentrus nattereri, 193 Serrasalmus maculatus, and 63 S. marginatus.They were captured in two bays, upper and lower Caiçara, in the upper Paraguay River basin, during one hydrological cycle from May 2008 to April 2009. Six species of Branchiura were found: Dolops bidentata, D. longicauda, Dolops sp., Argulus multicolor, A. chicomendesi, and Dipteropeltis hirundo. All fish species were infested by more than one species of Branchiura and the overall prevalence was 33.4%. The following prevalences were observed: 52.6% in P. nattereri; 20.3% in S. maculatus, and 15.8% in S. marginatus. The relative condition factor (Kn) differed significantly between parasitized and non parasitized individuals only in P. nattereri and S. maculatus. There was no correlation between Kn and abundance of parasites nor between body length (Ls) and intensity of infestation, in all three host species.

scholarly journals Mutilating predation in the Cheirodontinae Odontostilbe pequira (Characiformes: Characidae)

2012 ◽  
Vol 10 (2) ◽  
pp. 361-368 ◽  
Author(s):  
Monise R. L. Lima ◽  
Eduardo Bessa ◽  
Diones Krinski ◽  
Lucélia Nobre Carvalho
Keyword(s):  
Fish Species ◽  
River System ◽  
Mato Grosso ◽  
Prochilodus Lineatus ◽  
Behavioral Interactions ◽  
Paraguay River ◽  
Video Recordings ◽  
Diet Analyses ◽  
Large Groups ◽  
Made In

We observed individuals of Odontostilbe pequira, a small characid, approaching and biting individuals of larger-bodied fishes of other species. This observation was made in two clear water headwater streams of the Cuiabá basin, Paraguay River system, located in Nobres, Mato Grosso State, Brazil, which led us to investigate the behavioral interactions of these fish. We characterized behavioral interactions between species by direct underwater observations using snorkelling and video recordings. Additionally, we proceeded diet analyses of O. pequira, obtaining intestinal coefficient and the index of alimentary importance. During underwater observations we checked the relative frequency of attacks by O. pequira on larger fish species. Odontostilbe pequira attacked individually or in large groups, and the anostomid Leporinus friderici was the preferred target prey species, while Prochilodus lineatus was apparently avoided. Our study sustains that O. pequira is omnivorous, with a diet that varies seasonally. It feeds mainly on plants, but also on animal prey, including the scales of small fishes, and, possibly, the mucus and epidermis of larger fish species. We suggest the term "mutilating predation" to describe the latter relationship.

scholarly journals Fish from urban tributaries to the Vermelho River, upper Paraguay River Basin, Mato Grosso, Brazil

Check List ◽  
2014 ◽  
Vol 11 (1) ◽  
pp. 1516 ◽  
Author(s):  
Valdeci Antonio de Oliveira ◽  
Lucia Aparecida Mateus ◽  
Simoni Loverde-Oliveira ◽  
William Pietro-Souza
Keyword(s):  
Species Composition ◽  
River Basin ◽  
Fish Species ◽  
Fish Fauna ◽  
Common Species ◽  
Urban Streams ◽  
Spatial Gradient ◽  
Mato Grosso ◽  
Paraguay River ◽  
Fish Species Composition

The fish fauna of urban streams is still poorly known, it difficult to assess the effects of urbanization expansion on fish species composition, for this reason the aim of this study was to provide a checklist of species that compose the ichthyofauna of six urban streams, tributaries to the Vermelho River, upper Paraguay River Basin, Rondonópolis, Mato Grosso State, Brazil. The samples were performed with seine nets on a spatial gradient of 75 m, and with sieves for a period of 15 minutes in each site. A total of 56 species belonging to five orders, Characiformes, Siluriformes, Gymnotiformes, Cyprinodontiformes, and Perciformes, 21 families and 44 genera were sampled. The most common species were Astyanax asuncionensis Géry, 1972, Astyanax abramis (Jenyns, 1842), Odontostilbe pequira (Steindachner, 1882), Odontostilbe paraguayensis Eigenmann & Kennedy, 1903, Characidium zebra Eigenmann, 1909 and Hypostomus sp. This checklist brings additional knowledge on fish that inhabit tributaries to the major rivers of northern Pantanal.

scholarly journals New records of the occurrence of Megaleporinus macrocephalus () (Characiformes, Anostomidae) from the basins of the Itapecuru and Mearim rivers in Maranhão, Northeastern Brazil

2022 ◽  
Vol 82 ◽  
Author(s):  
M. S. Almeida ◽  
P. S. S. Moraes ◽  
M. H. S. Nascimento ◽  
J. L. O. Birindelli ◽  
F. M. Assega ◽  
...  
Keyword(s):  
Fish Species ◽  
New Records ◽  
Northeastern Brazil ◽  
Coi Gene ◽  
Fish Farms ◽  
Exotic Fish ◽  
Paraguay River ◽  
Coi Sequences ◽  
Brazilian Northeast ◽  
Fish Tanks

Abstract The “piaussu”, Megaleporinus macrocephalus is an anostomatid fish species native to the basin of the Paraguay River, in the Pantanal biome of western Brazil. However, this species has now been recorded in a number of other drainages, including those of the upper Paraná, Uruguay, Jacuí, Doce, Mucuri, and Paraíba do Sulrivers. This study presents two new records of the occurrence of M. macrocephalus, in the basins of the Itapecuru and Mearim rivers in the state of Maranhão, in the Brazilian Northeast. The piaussu is a large-bodied fish of commercial interest that is widely raised on fish farms, and its occurrence in the Itapecuru and Mearim rivers is likely the result of individuals escaping from fish tanks when they overflow during the rainy season. Morphological analyses and sequences of the Cytochrome Oxidase Subunit I (COI) gene confirmed the taxonomic identification of the specimens as M. macrocephalus. The COI sequences were 99.66% similar to those of M. macrocephalus deposited in the BOLDSystems database. These records extend the known distribution of M. macrocephalus to the basins of the Itapecuru and Mearim rivers in the Brazilian Northeast, highlighting a new case of introduction of exotic fish species into Brazilian river basins.

Characterization and evolution of spearfishing in Madeira archipelago, Eastern Atlantic

2020 ◽  
Vol 33 ◽  
pp. 15
Author(s):  
Roi Martínez-Escauriaza ◽  
Claudio Vieira ◽  
Lídia Gouveia ◽  
Nuno Gouveia ◽  
Margarida Hermida
Keyword(s):  
Fish Species ◽  
Young Men ◽  
Coastal Areas ◽  
Teleost Fishes ◽  
The North ◽  
Southeast Coast ◽  
Madeira Archipelago ◽  
First Time

Data obtained from licenses of spearfishers and surveys conducted in 2004 and 2017 allowed for the analysis, for the first time, of the practice of spearfishing in the Madeira archipelago. Only a small percentage of the population practices spearfishing, mostly local young men. Most of them practice the activity with a partner throughout most of the year and along most of the island's coastal areas, although preferentially along the North and Southeast coast. Results show how, in recent years, despite the population of spearfishers decreasing, the abundance in the annual catch potentially increased, probably due to the higher investment of time in this activity. It has been observed that many fishers complement their catches with manual collecting of invertebrates. Overall, 40 teleost fishes and also 4 crustaceans and 8 molluscs were identified. The most frequently captured fish species were parrotfish and white seabream, while limpets were the most collected invertebrates in both selected periods.

Effects of Drying Methods on the Biochemical Composition and Organoleptic Properties of Two Freshwater Fish Species (Mormyrus rume and Labeo coubie) of Cross River Obubra, Nigeria

2019 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Moisture Content ◽  
Fish Species ◽  
Nutrition Status ◽  
Drying Methods ◽  
Organoleptic Properties ◽  
Nutrient Quality ◽  
Oven Drying ◽  
Fish Samples ◽  
Fish And Fishery Products ◽  
Mormyrus Rume

Consumers all over the world are increasingly becoming aware of the health and nutrition status of fish and fishery products. There have develop some preference for fish species and even their processing methods. This study aims to investigate the effects of two drying methods (smoking and oven drying) on the biochemical components and organoleptic properties of two less preferred food fishes abundant in the study area. The fish samples Mormyrus rume and Labeo coubie were purchased from fresh landings of fishermen at Ahaha beach. The biochemical assay of the moisture, protein, fat, carbohydrate, ash, calcium (Ca), magnesium (Mg), phosphorus (P), iron (Fe), sodium (Na) and potassium (K) were conducted in the labouratory using standard methods. The proximate composition of raw M. rume was determined as moisture 70.38%, protein 17.43%, carbohydrate 1.13%, fat 5.93% and ash 2.77% while oven dried were 18.78, 63.85, 3.37, 8.73 and 7.58% respectively. All the proximate parameters and gross energy level investigated were higher (p < 0.05) in M. rume except the moisture content of dried samples of L. coubie. The mineral content were in the order Ca < Mg < Fe < Na < P and < K in both species and were higher in M. rume except Na. The drying methods showed increase in the proximate and mineral compositions in the order raw < smoking and < oven drying except moisture content that decreased respectively is both species. Organoleptic properties revealed that dried samples (smoked and oven) were not significantly different (p < 0.05) in taste, flavour, texture and overall acceptance, however while oven dried had better colour (4.33), smoked dried taste (4.63) better. The drying methods shows concentration of the required nutrients in human diets and were also found to be most palatable by the panellist. To improve fish nutrient quality smoke and oven drying should be encourage.

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