scholarly journals Longitudinal distribution of the ichthyofauna in a tributary of Tietê River with sources on the Basaltic Cuestas of São Paulo, Southeastern Brazil

2016 ◽  
Vol 16 (2) ◽  
Author(s):  
Rodrigo Torres Cardoso ◽  
Alexandre Kannebley de Oliveira ◽  
Julio Cesar Garavello
Keyword(s):  
Fish Species ◽  
Similarity Index ◽  
Distinct Species ◽  
Sao Paulo ◽  
The Other ◽  
Longitudinal Distribution ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Rarefaction Analysis ◽  
Tietê River

This work aimed to study the composition and distribution of fish species at four sites along Cabeça River, an affluent of Corumbataí River, tributary of Tietê River, intending to better understand the influence of local geomorphology on the occurrence of the species along the river. Using gill nets, trawl net, cast net and sieves, five samples were taken from each site every two months. These data were analyzed from constancy of occurrence, similarity index of Jaccard, rarefaction analysis and descriptive statistical analysis of richness. 4,532 fish individuals belonging to six different orders, 17 families and 65 species were captured. Differences in composition, richness (diversity), abundance and frequency were observed at these sites along the river. The sample site near the mouth of Cabeça River, was richer (49 species) and more abundant than the other three upstream sites, which showed fewer species and equivalent amounts each other (between 22 and 29 species). Moreover, this downstream site had the highest percentage of accessory species, whereas the other samples had a greater number of constant species. Cluster analysis from the Jaccard similarity showed that each site had distinct species composition. Cabeça River basin drains a rugged terrain in the state of São Paulo, between the Basaltic Cuestas and Peripheral Depression geomorphologic provinces. In this scenario, waterfalls and rapids influence the distribution, composition and richness of fish species.

scholarly journals Anthropic effects on the fish community of Ribeirão Claro, Rio Claro, SP, Brazil

2007 ◽  
Vol 67 (1) ◽  
pp. 23-32 ◽  
Author(s):  
FC. Ferreira ◽  
M. Petrere Jr.
Keyword(s):  
Species Richness ◽  
Fish Community ◽  
Similarity Index ◽  
Diversity Indices ◽  
Sao Paulo ◽  
Reproductive Period ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Number Of Individuals ◽  
Made In

The effect of anthropic alterations such as drain discharge on a fish community was studied in the Ribeirão Claro River, municipality of Rio Claro, State of São Paulo, southeastern Brazil. Samples were made monthly in three different points along the river (headwaters, mid course, and confluence) between December, 2003 and March, 2004, which is the reproductive period for the majority of the species. The fish community of the Ribeirão Claro River showed a fair composition and diversity, with species rarely observed in studies made in the region, such as Paravandellia oxyfera and Callichthys callichthys. Indices of diversity and equitability showed different results when weight or the number of individuals were considered. Moreover, these indices did not reveal the typical increase in diversity from the headwaters toward the confluence, nor the loss of richness in the part altered by drain discharge. An interpretation should be made with caution, taking into account the diverse factors included in the computation. Similar to the diversity indices, the Morisita-Horn similarity index did not reveal a great difference in the fish community of the confluence of the river, mainly in relation to its mid course. The decline of species richness and trophic composition alteration in the disturbed part is clear, which shows a great dominance of piscivorous species.

scholarly journals A new record of the non-native fish species Butis koilomatodon (Bleeker 1849) (Teleostei: Eleotridae) for southeastern Brazil

Biotemas ◽  
2016 ◽  
Vol 29 (2) ◽  
pp. 113 ◽  
Author(s):  
Riguel Feltrin Contente ◽  
Marina Rito Brenha-Nunes ◽  
Carolina Correia Siliprandi ◽  
Rafael Andrei Lamas ◽  
Valéria Regina Martins Conversani
Keyword(s):  
Fish Species ◽  
New Record ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
Native Fish ◽  
São Paulo

http://dx.doi.org/10.5007/2175-7925.2016v29n2p113Neste trabalho, reportamos o segundo registro do peixe invasor, Butis koilomatodon, na costa de São Paulo (Sudeste do Brasil), o que representa, também, o registro mais ao sul no sudoeste do Oceano Atlântico. Discutimos os riscos de uma potencial invasão mediada pelos impactos antrópicos na área de ocorrência. 

scholarly journals The rediscovery of Pimelodella longipinnis (Borodin, 1927), an enigmatic Atlantic Rainforest catfish species from Southeastern Brazil (Siluriformes: Heptapteridae)

2021 ◽  
Vol 61 ◽  
pp. e20216173
Author(s):  
Veronica Slobodian ◽  
Bruno Abreu-Santos ◽  
Murilo Nogueira de Lima Pastana
Keyword(s):  
Natural History ◽  
Fish Species ◽  
Dorsal View ◽  
Sao Paulo ◽  
Monophyletic Group ◽  
Type Locality ◽  
Southeastern Brazil ◽  
São Paulo ◽  
American Museum ◽  
Paulo State

This article is a redescription of Pimelodella longipinnis, an enigmatic catfish previously known only from its holotype and with uncertain type locality. The species is redescribed based on recently collected materials from streams of the Mata Atlântica bioregion, in Santos municipality, São Paulo State, Brazil. Pimelodella longipinnis is assigned to a putatively monophyletic group, the Pimelodella leptosoma-group, diagnosed by the presence of a supraoccipital process not reaching the anterior nuchal plate, with a gap of ca. 20-25% of the supraoccipital process total length, and whose tip notably surpasses the midpoint of the complex vertebra in dorsal view. We also present a list of fish species described from a shipping sent to the American Museum of Natural History from the former Museu Paulista (now Museu de Zoologia da Universidade de São Paulo), of which P. longipinnis was part.

scholarly journals Floral biology and breeding system of three Ipomoea weeds

2007 ◽  
Vol 25 (1) ◽  
pp. 35-42 ◽  
Author(s):  
R.C.S. Maimoni-Rodella ◽  
Y.A.N.P. Yanagizawa
Keyword(s):  
Cluster Analysis ◽  
Plant Species ◽  
Breeding System ◽  
Similarity Index ◽  
Floral Biology ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Floral Visitor ◽  
Floral Visitors

The floral biology of three weeds, Ipomoea cairica, I. grandifolia and I. nil (Convolvulaceae), was studied in Botucatu and Jaboticabal, São Paulo, in southeastern Brazil. The three species are melittophilous, with a varied set of floral visitors, but with some overlapping. Cluster analysis using Jacquard similarity index indicated a greater similarity among different plant species in the same locality than among the populations at different places, in relation to floral visitor sets. The promiscuous and opportunistic features of the flowers were shown, with such type of adaptation to pollination being advantageous to weeds since pollinator availability is unpredictable at ruderal environments.

scholarly journals Crustacea, Isopoda, Oniscidea Latreille, 1802: new continent record and distribution extension in Brazil

Check List ◽  
2010 ◽  
Vol 6 (2) ◽  
pp. 217 ◽  
Author(s):  
Mariana Juventina Magrini ◽  
Paula Beatriz Araujo ◽  
Marcio Uehara-Prado
Keyword(s):  
Rio Grande ◽  
Sao Paulo ◽  
The State ◽  
Southeastern Brazil ◽  
Pitfall Traps ◽  
São Paulo ◽  
Undescribed Species ◽  
Rio Grande Do Sul ◽  
Serra Do Mar ◽  
First Time

Terrestrial Isopods were sampled in four protected Atlantic Forest areas located in Serra do Mar, state of São Paulo, southeastern Brazil. A total of 2,217 individuals of six species (Atlantoscia sp., Benthana werneri, Pseudodiploexochus tabularis, Pudeoniscus obscurus, Styloniscus spinosus and Trichorhina sp.) were captured in pitfall traps. The exotic species S. spinosus is recorded for the first time for the Americas. Another introduced species, P. tabularis, previously recorded only from the state of Rio Grande do Sul, had its geographic distribution extended to the state of São Paulo. The most abundant isopods in this study belong to an undescribed species of Atlantoscia.

A new species of the highland frog genus Holoaden (Amphibia, Strabomantidae) from cloud forests of southeastern Brazil

Zootaxa ◽  
2013 ◽  
Vol 3599 (2) ◽  
pp. 178-188 ◽  
Author(s):  
ITAMAR A. MARTINS ◽  
HUSSAM ZAHER
Keyword(s):  
New Species ◽  
Body Size ◽  
High Altitude ◽  
Ventral Surface ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Cloud Forests ◽  
Serra Do Mar ◽  
A New Species

A new species of the genus Holoaden is described from the Atlantic forest of the state of São Paulo, Brazil, being restricted to primary or slightly disturbed high altitude cloud forests along the northeastern portion of the Serra do Mar. The typelocality is determined as Estação Ecológica de Bananal, in the Municipality of Bananal, State of São Paulo, Brazil. The new species is characterized by its moderate body size (female 42.6–44.2 mm SVL; male 37.2–38.5 mm SVL) with long and slender limbs, a head wider than long, a highly glandular dorsum, covered by well developed macroglands that extend to the internasal region, thigh and tibia, and an intense dark brown dorsal coloration and dark grey ventral surface.

scholarly journals Serosurvey of Rickettsia spp. in dogs and humans from an endemic area for Brazilian spotted fever in the State of São Paulo, Brazil

2008 ◽  
Vol 24 (2) ◽  
pp. 247-252 ◽  
Author(s):  
Adriano Pinter ◽  
Maurício C. Horta ◽  
Richard C. Pacheco ◽  
Jonas Moraes-Filho ◽  
Marcelo B. Labruna
Keyword(s):  
Human Serum ◽  
Endemic Area ◽  
Spotted Fever ◽  
Sao Paulo ◽  
The State ◽  
The Other ◽  
São Paulo ◽  
Human Sera ◽  
Antibody Titers ◽  
Brazilian Spotted Fever

The present study provides a rickettsial serosurvey in 25 dogs and 35 humans in an endemic area for Brazilian spotted fever in the State of São Paulo, where the tick Amblyomma aureolatum is the main vector. Testing canine and human sera by indirect immunofluorescence against four Rickettsia antigens (R. rickettsii, R. parkeri, R. felis and R. bellii) showed that 16 (64%) of canine sera and 1 (2.8%) of human sera reacted to at least one of these rickettsial antigens with titers <FONT FACE=Symbol>³</FONT> 64. Seven canine sera and the single reactive human serum showed titers to R. rickettsii at least four times those of any of the other three antigens. The antibody titers in these 7 animals and 1 human were attributed to stimulation by R. rickettsii infection. No positive canine or human serum was attributed to stimulation by R. parkeri, R. felis, or R. bellii. Our serological results showed that dogs are important sentinels for the presence of R. rickettsii in areas where the tick A. aureolatum is the main vector of Brazilian spotted fever.

scholarly journals Human disease in ribeira valley, brazil caused by caraparu, a group c arbovirus - Report of a case

1987 ◽  
Vol 29 (2) ◽  
pp. 112-116 ◽  
Author(s):  
Lygia Busch Iversson ◽  
Amélia P. A. Travassos da Rosa ◽  
Terezinha Lisieux M. Coimbra ◽  
Ivani Bisordi Ferreira ◽  
Elza da Silva Nassar
Keyword(s):  
Human Disease ◽  
Laboratory Data ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
Antigenic Relationship ◽  
São Paulo ◽  
Antigenic Difference ◽  
Serological Tests ◽  
Paulo State ◽  
São Paulo State

The clinical and laboratory data of a disease in a resident of Ribeira Valley, São Paulo State, southeastern Brazil, caused by an agent close or identical to Caraparu, a Group C arbovirus, was described. Although there is evidence of an intensive circulation of several arboviruses in the area, no diagnosis of human disease by these agents has been made, except the encephalitis cases caused by Rocio virus during an epidemic in 1975-1977. An antigenic difference between Caraparu strains isolated in São Paulo and in Pará States and a close antigenic relationship between Caraparu strain from São Paulo and Bruconha virus were suggested by the serological tests.

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