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1. Artisanal fisheries of the Itaparica reservoir, São Francisco River, Brazil: socioeconomic profile, environmental dynamics, and management recommendations

Author:
Nogueira da Silva, Gérsica Moraes; de Oliveira Carvalho, Renata Maria C. M.; El-Deir, Ana Carla Asfora; Sobral, Maria do Carmo Martins; Siegmund-Schultze, Marianna
Source:
Regional environmental change 2018 v.18 no.7 pp. 1889-1899
ISSN:
1436-3798
Subject:
aquaculture; artisanal fishing; breeding season; fish; fish production; fisheries management; fishermen; fishery resources; freshwater; humans; indigenous species; introduced species; migratory behavior; monitoring; production technology; rivers; semiarid zones; water reservoirs; watersheds; Brazil
Abstract:
... Currently, artisanal fisheries in fresh water reservoirs have been losing ground to commercial fish farming and a great deal of fishery resources are being threatened by human interventions, such as reservoir management and increasing net-cage aquaculture. This study aims to understand the impacts of environmental changes on fishery resources and analyse the migratory fish breeding season as a mis ...
DOI:
10.1007/s10113-018-1293-y

2. Species assignment and population genetic studies of Gran Paraná pejerrey (Odontesthes sp., Atheriniformes, Atherinopsidae) from La Plata Basin in South America

Author:
Villanova, GabrielaVanina; Vera, Manuel; Brancolini, Florencia; Díaz, Juan; Martinez, Paulino; Arranz, SilviaEda
Source:
Hydrobiologia 2018 v.819 no.1 pp. 243-257
ISSN:
0018-8158
Subject:
Odontesthes; basins; common names; fish; fisheries; genetic variation; microsatellite repeats; migratory behavior; models; population dynamics; rivers; Brazil
Abstract:
... Pejerrey is the common name given to Odontesthes species from South America. Every year, individuals of pejerrey called “Gran (Big) Paraná” appear during the low-temperature season at rivers in the southern section of the La Plata Basin. Gran Paraná fishes are highly appreciated for fishing, and present some biological features different from other well-characterized Odontesthes fish, such as bigg ...
DOI:
10.1007/s10750-018-3643-7

3. Influence of rainfall, hydrological fluctuations, and lunar phase on spawning migration timing of the Neotropical fish Prochilodus costatus

Author:
de Magalhães Lopes, João; Alves, CarlosBernardo Mascarenhas; Peressin, Alexandre; Pompeu, PauloSantos
Source:
Hydrobiologia 2018 v.818 no.1 pp. 145-161
ISSN:
0018-8158
Subject:
Prochilodus; environmental factors; fish; migratory behavior; radio telemetry; rain; rivers; spawning; stream flow; wet season; Brazil
Abstract:
... The arrival of the rains and the hydrological changes they cause are essential in the reproductive cycle of Neotropical migratory fishes, but their association with the onset of migration is still poorly understood. This study aimed to determine the role played by rainfall, hydrological changes, and the lunar cycle as triggers for migration of Prochilodus costatus (Prochilodontidae) in the upper S ...
DOI:
10.1007/s10750-018-3601-4

4. Introgression from non-native species unveils a hidden threat to the migratory Neotropical fish Prochilodus hartii

Author:
Sales, NaiaraGuimarães; Pessali, TiagoCasarim; Andrade Neto, FranciscoRicardo; Carvalho, DanielCardoso
Source:
Biological invasions 2018 v.20 no.3 pp. 555-566
ISSN:
1387-3547
Subject:
DNA barcoding; Prochilodus; backcrossing; basins; biodiversity; ecological invasion; fish; fisheries; genetic markers; genetic stability; haplotypes; hybrids; indigenous species; introduced species; introgression; invasive species; migratory behavior; migratory species; pathogens; predation; watersheds; Brazil
Abstract:
... Invasive species are one of the greatest threats to biodiversity, due to competition, predation, pathogen spread, and hybridization. The latter may remain undetected and impair the survival of species, due to genetic admixture and hybrid swarming (i.e., interbreeding between hybrid individuals and backcrossing with parental species). The impact of invasive species remains poorly studied in the Neo ...
DOI:
10.1007/s10530-017-1556-4

5. Spatial and temporal distribution of ichthyoplankton during an unusual period of low flow in a tributary of the São Francisco River, Brazil

Author:
Rosa, G.R.; Salvador, G.N.; Bialetzki, A.; Santos, G.B.
Source:
River research and applications 2018 v.34 no.1 pp. 69-82
ISSN:
1535-1459
Subject:
Prochilodus; eggs; environmental factors; fish; gonads; ichthyoplankton; larvae; migratory behavior; migratory species; rain; reproduction; rivers; spawning; temporal variation; water; Brazil
Abstract:
... Flow‐dependent fish specialists require specific conditions for reproduction, so the success and reproductive intensity of these animals are determined by the flood regime. Thus, this study investigated the spatial and temporal reproductive patterns of fish, especially migratory Prochilodus species (flow‐dependent specialists) in an unusual period of low flow in the Pará River sub‐basin, one of th ...
DOI:
10.1002/rra.3225

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

Author:
Loures, Raquel Coelho; Pompeu, Paulo Santos
Source:
Marine & freshwater research 2018 v.69 no.12 pp. 1983-1994
ISSN:
1323-1650
Subject:
basins; fish; habitats; herbivores; introduced species; inventories; lotic systems; migratory behavior; migratory species; monitoring; species richness; water power; watersheds; Brazil
Abstract:
... 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-nativ ...
DOI:
10.1071/MF18109

7. Stress indicators for Prochilodus lineatus (Characiformes: Prochilodontidae) breeders during passage through a fish ladder

Author:
Bido, Adriane F.; Urbinati, Elisabeth C.; Makrakis, Maristela C.; Celestino, Leandro F.; Serra, Mônica; Makrakis, Sergio
Source:
Marine & freshwater research 2018 v.69 no.12 pp. 1814-1821
ISSN:
1323-1650
Subject:
Prochilodus lineatus; adults; body weight; cortisol; dams (hydrology); females; fish; fish ladders; glucose; hematocrit; lactic acid; males; migratory behavior; rivers; Brazil
Abstract:
... This study investigated whether fish ladder transposition is a stressful event for the streaked prochilod, Prochilodus lineatus, in a dam on the Upper Paraná River, Brazil. Bodyweight, standard length and plasma concentrations of cortisol, glucose, lactate, chloride and haematocrit were measured in 48 adult fish (male and female) that were sampled downstream and upstream of the dam and on the fish ...
DOI:
10.1071/MF18087