scholarly journals Checklist of non-native fish species of Sorocaba River Basin, in the State of São Paulo, Brazil

Check List ◽  
2013 ◽  
Vol 9 (2) ◽  
pp. 235 ◽  
Author(s):  
Renata Cassemiro Biagioni ◽  
Amanda Rocha Ribeiro ◽  
Welber Senteio Smith
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Oreochromis Niloticus ◽  
Sao Paulo ◽  
The State ◽  
Native Fish ◽  
Published Data ◽  
Tilapia Rendalli ◽  
Sampling Program ◽  
Electric Fishing

The present study aimed to create an inventory of non-native fish species in the basin of the Sorocaba river, located at Upper Rio Paraná. Fish were collected between August 2010 and January 2012 using nets with meshes, round shaped fishing nets, hand net and electric fishing equipment, as well as contacts with fishermen to seek information on species captured in the basin. Besides, we used published data and information contained in reports, monographs and thesis. Five non-native fish species were collected: Tilapia rendalli, Oreochromis niloticus, Pterygoplichthys anisitsi, Poecilia vivipara and Triportheus nematurus that represented 10.63% of all fish species captured in the basin of the Sorocaba river. The occurrence of eight other species, although they were not collected by the sampling program of this study, had already been reported in previous studies, and had already been captured by amateur and professional fishermen, particularly in the reservoir of Itupararanga and in the urban stretch of the Sorocaba river.

scholarly journals Associations between fish assemblage and riparian vegetation in the Corumbataí River Basin (SP)

2007 ◽  
Vol 67 (2) ◽  
pp. 191-195 ◽  
Author(s):  
M. Cetra ◽  
M. Petrere JR.
Keyword(s):  
Species Richness ◽  
River Basin ◽  
Fish Species ◽  
Sugar Cane ◽  
Fish Assemblage ◽  
Vegetation Cover ◽  
Riparian Vegetation ◽  
Riparian Forest ◽  
The State ◽  
Multivariate Techniques

This work intends to examine if there are associations between fish species and the state of conservation of the riparian forest in the Corumbataí River Basin. Four main rivers were chosen for this study with three sites on each. Collections were carried out from March to June and from September to December 2001. Multivariate techniques were applied to determine the correlation between species richness and the order of the rivers, preservation level of the riparian forest, shade level, presence or absence of Eucalyptus, sugar cane and pastures, and surrounding declivity stability of the sites. Species richness was highest at locations with greater vegetation cover and preserved riparian forest.

scholarly journals Ichthyofauna of the Una river in the Paraíba do Sul Paulista River Valley, Southeastern of Brazil

2018 ◽  
Vol 18 (4) ◽  
Author(s):  
Juliano Rodrigues Honorio ◽  
Itamar Alves Martins
Keyword(s):  
River Basin ◽  
New Records ◽  
Sao Paulo ◽  
The State ◽  
River Valley ◽  
São Paulo ◽  
Number Of Individuals ◽  
Fyke Nets ◽  
Paraíba Do Sul River

Abstract: This study focus on an inventory of the ichthyofauna of the Una river, a tributary of the Paraíba do Sul river, located in the region of Paraíba do Sul River Valley, in the State of São Paulo. Sampling was carried out in three sampling areas along the channel of the Una river between April 2016 and March 2017. For the collection of fish specimens, was used angling, fyke nets, cast nets, dragnets and hand nets. A total of 1.534 specimens were collected, which corresponds to five different orders, 14 families, 26 genera and thirty species. The study revealed that the most significant number of reported species are from the orders Siluriformes and Characiformes. The Characidae family was the most representative concerning the wealth of species and Astyanax aff. bimaculatus (two spot Astyanax | lambari-do-rabo-amarelo) was the species with the highest number of individuals captured. The freshwater ichthyofauna of the Una river is composed of eight species considered allochthonous and one exotic. Of the thirty species listed in this study, five are new records for the Paraíba do Sul river basin.

scholarly journals Distribution and Trophic Pattern of Non-Native Fish Species Across the Liao River Basin in China

Water ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1217
Author(s):  
Kangshun Zhao ◽  
Chao Li ◽  
Tao Wang ◽  
Bowen Hu ◽  
Min Zhang ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Socioeconomic Development ◽  
Anthropogenic Activities ◽  
Trophic Levels ◽  
Native Fish ◽  
Southeastern Part ◽  
Basin Scale ◽  
Different Types ◽  
Native Fishes

Controlling the invasion of non-native fish species necessitates a complete understanding of the distribution of these species and the key factors that influence such distribution. In order to research the situation of non-native fish and the relevant influencing factors in the Liao River Basin, we investigated and analyzed the characteristics of the distribution and the trophic levels of non-native fish species, as well their response to different types of factors in the basin. Nine non-native fish species were found during the investigation, and the trophic levels of these species ranged between 2.00 and 3.84. The results of generalized linear models indicate that the distribution of non-native fish species in the basin is mainly related to anthropogenic activities, socioeconomic development, and climate. The southeastern part of the Liao River Basin is conducive to the distribution of non-native fish species. Furthermore, on a spatial scale, we also found that the mean trophic level of non-native fish species was not correlated with anthropogenic activities and socioeconomic development in the Liao River Basin. By providing evidence for the links between non-native fishes and different types of factors, our study contributes to increasing the relevant references for and experiences in the early detection and management of non-native fishes on a basin scale.

scholarly journals Long-term study of reservoir cascade in south-eastern Brazil reveals spatio-temporal gradient in fish assemblages

2018 ◽  
Vol 69 (12) ◽  
pp. 1983 ◽  
Author(s):  
Raquel Coelho Loures ◽  
Paulo Santos Pompeu
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Fish Assemblage ◽  
Native Species ◽  
Fish Assemblages ◽  
Native Fish ◽  
Fish Diversity ◽  
Fish Assemblage Structure ◽  
Long Term Study

In reservoir cascades, effects on fish assemblages are expected to strengthen over time and transfer from one reservoir to an adjacent one. To test this, fish-assemblage data from 23 years of monitoring in the Araguari reservoir cascade system, upper Paraná River basin, were analysed. The results showed a clear reduction in richness of native and migratory fish species and an increase of non-native species, following reservoir formation. Migratory species richness was higher in reservoirs that presented habitats similar to lotic stretches or tributaries upstream of the impounded area. There was a clear tendency for native species to decline and non-native fish species to increase, in a downstream direction. Fish assemblages became increasingly dissimilar as reservoirs became more distant from each other (longitudinal gradient) and were dominated by small and medium-sized species. Alongside longitudinal position, reservoir area, age and the presence of herbivorous non-native fish were found to be important predictors of variation in fish-assemblage structure. Results from the present study help clarify the potential accumulated impacts of reservoir cascades on fish diversity, which must be carefully considered in river-basin inventories for hydropower plants, and reinforce the importance of long-term monitoring, considering longitudinal and lateral dimensions of the basin.

scholarly journals A new occurrence of Anodontites tenebricosus (Bivalvia: Mycetopodidae) in the Sapucaí river basin, São Paulo, Brazil: environmental and conchological aspects

2011 ◽  
Vol 71 (3) ◽  
pp. 629-634 ◽  
Author(s):  
EK. Troncon ◽  
WEP Avelar
Keyword(s):  
River Basin ◽  
Sao Paulo ◽  
The State ◽  
São Paulo ◽  
Strong Correlations ◽  
Paulo State ◽  
São Paulo State

The aim of this work was to register the occurrence of Anodontites tenebricosus (Bivalvia: Mycetopodidae) in the Sapucaí river basin, municipality of São Joaquim da Barra, São Paulo state, Brazil, associating its occurrence to the environment in which they are found, besides providing conchological data to contribute to the identification of the species. Fifty one specimens of Anodontites tenebricosus were studied regarding their conchological and morphometrical aspects. Strong correlations were found between the morphometric variables, the correlation between 'length and height of the shell' being the most significant. The characteristics of the shells of A. tenebricosus found in the Sapucaí river basin resemble the descriptions of the species found in the literature; therefore, we are able to expand the area of occurrence of the species for the state of São Paulo.

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