Collapse of the reproductive process of two migratory fish (Prochilodus argenteus and Prochilodus costatus) in the Três Marias Reservoir, São Francisco River, Brazil

2010 ◽  
Vol 27 (3) ◽  
pp. 847-853 ◽  
Author(s):  
F. Pereira Arantes ◽  
H. Batista dos Santos ◽  
E. Rizzo ◽  
Y. Sato ◽  
N. Bazzoli
Keyword(s):  
Migratory Fish ◽  
Reproductive Process ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Três Marias Reservoir

scholarly journals Assessment of fish assemblage in an urban system, Itapecerica River, upper São Francisco River basin, Divinópolis, Minas Gerais, Brazil

Check List ◽  
2013 ◽  
Vol 9 (3) ◽  
pp. 482 ◽  
Author(s):  
Fabrício F.T. Domingos ◽  
Ralph G. Thomé ◽  
Rosy I.M.A. Ribeiro ◽  
Helena A.V. Souza ◽  
Hélio B. Santos
Keyword(s):  
Alien Species ◽  
River Basin ◽  
Fish Assemblage ◽  
Fish Fauna ◽  
Urban System ◽  
Migratory Fish ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Ecological Importance ◽  
High Level

Despite the economic and ecological importance of the Itapecerica River, there is no information about the local fish fauna. The aim of the present study was to provide a list of fish species in Itapecerica River, a tributary of the upper São Francisco River basin, inside an urban area. The specimens were collected quarterly from May 2010 to February 2012, using casting nets, trawl net and gillnets. We listed 29 species belonging to 21 genera of 14 families and 4 orders. Characiformes were represented by 16 species, Siluriformes by nine, Gymnotiformes and Perciformes by two each. Three alien species and five migratory fish were recorded. The low number of species found in this study in relation to São Francisco basin, could be reflecting the high level of degradation of waters in the Itapecerica River.

Gamidactylus piranhus sp. nov. (Copepoda, Vaigamidae) from the nasal fossae of serrasalmid fishes from the Três Marias Reservoir, Upper São Francisco River, Minas Gerais State, Brazil

2008 ◽  
Vol 53 (3) ◽  
Author(s):  
Vernon Thatcher ◽  
Michelle Santos ◽  
Marilia Brasil-Sato
Keyword(s):  
New Species ◽  
San Francisco ◽  
Type Species ◽  
Antennal Segment ◽  
Minas Gerais ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Minas Gerais State ◽  
Simple Seta ◽  
Três Marias Reservoir

AbstractGamidactylus piranhus sp. nov. (Copepoda, Vaigamidae) from the nasal fossae of “San Francisco piranha”, Pygocentrus piraya (Cuvier, 1819) and.White piranha. Serrasalmus brandtii (Lütken, 1875) is described. The new species is similar to the type species of the genus, Gamidactylus jaraquensis Thatcher et Boeger, 1984, but differs from it in the following respects: the cephalothorax is shorter, the free thoracic segments are usually longer, leg 5 is reduced to a simple seta and a spine on the second antennal segment is lacking. Gamidactylus bryconis Varella, 1995 and Gamidactylus hoplius Varella et Malta, 1996, do not closely resemble the new species because they are much larger and both present leg 5 reduced to a double seta.

Brasergasilus bifurcatus sp. nov. (Copepoda, Ergasilidae, Abergasilinae) from the gills and nasal fossae of serrasalmid fishes from the Três Marias Reservoir, Upper São Francisco River, Minas Gerais State, Brazil

2007 ◽  
Vol 52 (3) ◽  
Author(s):  
Michelle Santos ◽  
Vernon Thatcher ◽  
Marilia Brasil-Sato
Keyword(s):  
New Species ◽  
Distal Segment ◽  
Minas Gerais ◽  
Terminal Segment ◽  
Sao Francisco River ◽  
Genital Complex ◽  
São Francisco River ◽  
Minas Gerais State ◽  
Três Marias Reservoir

AbstractBrasergasilus bifurcatus sp. nov. (Copepoda, Ergasilidae, Abergasilinae) is described. Specimens of the new species were collected from the gills and nasal fossae of the serrasalmid fishes, known as “piranhas”, Pygocentrus piraya (Cuvier, 1819) and “pirambebas”, Serrasalmus brandtii (Lütken, 1875). The fishes were netted in the Três Marias Reservoir (18°12′59″S, 45°17′34″W) of the upper São Francisco River, Minas Gerais State, Brazil. The new species differs from its congeners by the following characters: the specific setation on the antennule; the terminal barb of the antenna; the deeply bifurcate distal segment of the mandible; the chalice-shaped genital complex; a conspicuous external indentation of the second segment of the first endopod and a very short terminal segment of the first exopod.

scholarly journals Parasitic helminths of the non-native serrasalmid fish Metynnis lippincottianus from the Três Marias Reservoir, Southeast Brazil

2018 ◽  
Author(s):  
Maria de Fátima Cancella de Almeida-Berto ◽  
Cassandra Moraes Monteiro ◽  
Marilia de Carvalho Brasil-Sato
Keyword(s):  
Geographical Distribution ◽  
Host Species ◽  
Amazon Basin ◽  
Native Fish ◽  
Freshwater Ecosystem ◽  
Sao Francisco River ◽  
Parasitic Helminths ◽  
Southeast Brazil ◽  
São Francisco River ◽  
Três Marias Reservoir

Abstract Metynnis lippincottianus is a freshwater native fish to the Guiana basin and Amazon basin and was recently introduced into the São Francisco River in Brazil. This study aimed to determine the helminths parasites of M. lippincottianus from the Três Marias Reservoir, upper São Francisco River, State of Minas Gerais, Southeast Brazil. From 67 hosts examined, 63 were parasitized by 9,257 helminths represented by five species: Dadayius sp. [prevalence (P) = 1.49%, mean abundance (MA) = 0.01]; proteocephalid plerocercoids (P = 43.28%, MA = 5.04); Procamallanus (Spirocamallanus) inopinatus (P = 29.85%, MA = 0.54); Spinitectus rodolphiheringi (P = 2.99%, MA = 0.03); Spinoxyuris sp. (P = 85.07%, MA = 132.54). These findings show that M. lippincottianus is an additional host to the helminths infecting fish native to the São Francisco River (plerocercoids, P. (S.) inopinatus and S. rodolphiheringi), and highlight the fact that Dadayius sp. and Spinoxyuris sp., which were typically found in native Metynnis spp. in other basins, also parasitizing the non-native serrasalmid M. lippincottianus in São Francisco River. These two helminth species have thrived in this freshwater ecosystem with the expansion of the geographical distribution of the host species to the São Francisco River.

scholarly journals Distribution of populations of broad-snouted caiman (Caiman latirostris, Daudin 1802, Alligatoridae) in the São Francisco River basin, Brazil

2010 ◽  
Vol 70 (4) ◽  
pp. 961-968 ◽  
Author(s):  
R. Filogonio ◽  
VB. Assis ◽  
LF. Passos ◽  
ME. Coutinho
Keyword(s):  
Human Impact ◽  
River Basin ◽  
Oxbow Lakes ◽  
Natural Habitats ◽  
Sao Francisco River ◽  
Small Dams ◽  
São Francisco River ◽  
Lotic Habitats ◽  
Reservoir State ◽  
Três Marias Reservoir

We surveyed populations of the broad-snouted caiman, Caiman latirostris, throughout the São Francisco River basin, from Três Marias reservoir, State of Minas Gerais, to the river delta, at the boarder of Sergipe and Alagoas states. We registered the occurrence of crocodilians in 61% of all surveyed localities (n = 64), in which the presence of C. latirostris was confirmed in 44% of the surveyed sites. Caimans occurred in both lentic and lotic habitats, although there was a preference for small dams, oxbow lakes and wetlands. Despite the hunting pressure and human impact on natural habitats, our results indicate that the populations of C. latirostris in the São Francisco basin are not fragmented.

scholarly journals Upstream and downstream migration speed of Prochilodus costatus (Characiformes: Prochilodontidae) in upper São Francisco basin, Brazil

2019 ◽  
Vol 17 (2) ◽  
Author(s):  
João de Magalhães Lopes ◽  
Carlos Bernardo Mascarenhas Alves ◽  
Alexandre Peressin ◽  
Paulo Santos Pompeu
Keyword(s):  
Swimming Performance ◽  
Upstream Migration ◽  
Migration Speed ◽  
Migratory Fish ◽  
Neotropical Fishes ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Migration Dynamics ◽  
Post Spawning ◽  
And Migration

ABSTRACT Details of migration dynamics of Neotropical fishes are poorly understood. This study aimed to examine upstream (spawning) and downstream (post-spawning) migration speeds, of curimatá-pioa (Prochilodus costatus) in the São Francisco River basin, southeast Brazil. Most upstream movements were recorded in October and November, in two well-defined migration windows, and downstream movements were frequent from December to March. Fish migrated upstream at an average migration speed of 34.4 km day-1 and no significant differences were detected in their speed between sexes and migration window they selected to migrate. No relationship was detected between upstream migration speed and biometric measures of tagged individuals. Upstream migrations speeds were significantly higher for fish that swam longer prior to reach telemetry stations in the same season, indicating that swimming performance may take some time to achieve its peak in upstream migration. Fish migrated downstream at an average migration speed of 97.7 km day-1, what is close to passive swimming in São Francisco River, and no significant differences in speed were detected between sexes or capture sites. The migration speeds measured here are the highest ever recorded for the genus Prochilodus and are among the highest reported for Neotropical migratory fish.

scholarly journals Argulus elongatus (Branchiura, Argulidae) in fish in the upper São Francisco river, Brazil

2020 ◽  
Vol 29 (2) ◽  
Author(s):  
Rayane Duarte ◽  
Maria de Fátima Cancella de Almeida-Berto ◽  
Caroline Ferreira Calvario ◽  
Michelle Daniele dos Santos-Clapp ◽  
Marilia de Carvalho Brasil-Sato
Keyword(s):  
Geographical Distribution ◽  
River Basin ◽  
Natural Water ◽  
Host Species ◽  
Water System ◽  
First Record ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Host List ◽  
Três Marias Reservoir

Abstract Among 164 fish from the upper São Francisco river, caught in the Três Marias reservoir (18º 12’ 59” S; 45º 17’ 34” W) or downstream from this reservoir (18º 12’ 32” S; 45º 15’ 41” W) in 2007, 2008, 2016 and 2017, four specimens of Argulus elongatus Heller, 1857 were found, one specimen per fish, in the following host species: Brycon orthotaenia Günther (two fish parasitized out of 38 examined) and Salminus hilarii Valenciennes (one fish parasitized out of 45 examined) (both in Bryconidae); and Metynnis lippincottianus (Cope) (one fish parasitized out of 81 examined) (Serrasalmidae). This opportunistic ectoparasite deserves attention even in the case of low infestation in fish in a natural water system. This is the first record of a branchiuran species in B.orthotaenia; the host list of A.elongatus is extended through addition of the three fish species examined in this study, and the known Brazilian geographical distribution of this argulid is enlarged to the São Francisco river basin.

scholarly journals Comparative analysis of the reproductive activity of Leporinus piau (Characiformes: Anostomidae) in lentic and lotic environments

2020 ◽  
Vol 18 (4) ◽  
Author(s):  
Aline Virtude do Nascimento ◽  
Lucas Marcon ◽  
José Enemir dos Santos ◽  
Kleber Biana Santiago ◽  
Elizete Rizzo ◽  
...  
Keyword(s):  
Condition Factor ◽  
Gonadosomatic Index ◽  
Reproductive Activity ◽  
Mature Stage ◽  
Spawning Period ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Lotic Environment ◽  
Lotic Environments ◽  
Três Marias Reservoir

Abstract In this study, we determined the main reproductive parameters of piau gordura, Leporinus piau, in two sections of the São Francisco River basin. Between May 2015 and April 2016, a total of 573 specimens were captured from a lentic environment (section 1), the Três Marias Reservoir (TMR), and a lotic environment (section 2), downstream of the TMR at the confluence of the São Francisco River (SFR) with the Abaeté River. Analysis of reproductive activity showed that L. piau from both sections reproduced, but females and males from section 1 exhibited higher total length, body weight, Fulton condition factor, and gonadosomatic index values, as compared to section 2. Sexual dimorphism was evident in the species, with females being larger than males. Moreover, males reached first gonadal maturation at a smaller size than females. The peak maturation/mature stage was observed in November/April for females and males in section 1 and in November/December in section 2, coinciding with high temperatures and precipitation in the region. In both sections of the river, L. piau exhibited the typical characteristics of partial spawning, with a prolonged spawning period, and preferential reproduction in lentic environments.

scholarly journals RHABDOCHONA (RHABDOCHONA) ACUMINATA (NEMATODA) IN FISHES (CHARACIFORMES, ACESTRORHYNCHIDAE) FROM THE TRÊS MARIAS RESERVOIR, UPPER SÃO FRANCISCO RIVER, BRAZIL

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Danielle Priscilla Correia Costa ◽  
Marcia Cavalcanti De Albuquerque ◽  
Marilia de Carvalho Brasil-Sato
Keyword(s):  
Minas Gerais ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Três Marias Reservoir

Rhabdochona (Rhabdochona) acuminata (Molin, 1860) (Rhabdochonidae) parasita o intestino de várias espécies de peixes e apresenta uma ampla distribuição geográfica. O presente estudo registra pela primeira vez a ocorrência de espécimes adultos deste helminto em Acestrorhynchus britskii Menezes, 1969 e Acestrorhynchus lacustris Lütken, 1875 (Acestrorhynchidae), coletados no Reservatório de Três Marias, Alto Rio São Francisco, Estado de Minas Gerais, Brasil. Nesta mesma localidade, larvas de Rhabdochona sp. foram encontradas em peixes forrageiros simpátricos, Tetragonopterus chalceus Spix & Agassiz, 1829 e Triportheus guentheri (Garman, 1890) potenciais presas dos acestrorhynchídeos piscívoros e relacionadas como possíveis hospedeiros intermediários ou paratênicos dessa espécie de parasito. Os índices parasitários de R. acuminata não foram influenciados pelo sexo e nem pelo comprimento total desses hospedeiros piscívoros.

Sign in / Sign up

Export Citation Format

Share Document