scholarly journals Spatio-temporal variation in surf zone fish communities at Ilha do Cardoso State Park, São Paulo, Brazil

2017 ◽  
Vol 41 (2) ◽  
pp. 239-253
Author(s):  
Jana Menegassi del Favero ◽  
June Ferraz Dias
Keyword(s):  
Seasonal Changes ◽  
Fish Community ◽  
Surf Zone ◽  
High Tide ◽  
Fish Communities ◽  
Fish Fauna ◽  
Sao Paulo ◽  
Biological Data ◽  
Seasonal Effect ◽  
São Paulo

In order to analyze the time-space variation of the fish fauna in the surf zone fish communities at Ilha do Cardoso State Park, São Paulo, Brazil, four consecutive hauls were done over a year on three beaches with different degrees of exposure, at low and high tide. To evaluate the influence of each abiotic variable over the fish community, a Canonical Correspondence Analysis was conducted. We identified 7,286 individuals belonging to 20 families and 47 species, most specimens collected were juveniles. At low tide, the highest diversity and richness values were calculated while the highest dominance was obtained at high tide. As for the number of species collected at the three beaches, stood out for the lower values the cooler months, between June and September. Abiotic variables explained 41.3% of the variability of biological data, where 11.4% corresponds to the spatial variation. Meanwhile the temporal variables accounted for 31.9% of the variation in abundance, where 26.3% of the variance explained nycthemeral variation. Additionally two groups were clearly observed between months with low and high temperature. However in this variable, the tidal variation, excluding the seasonal effect, explained 6.2%, while seasonality, excluding tide effect, explained 26.3%. Although the main measurable seasonal changes were related to temperature, water temperature showed a low percentage of explanation in the fish fauna variability (2.7%). Finally, it is emphasized that the seasonal changes in surf zone fish community primarily reflect patterns of recruitment determined by the reproductive activity and coastal circulation.

scholarly journals Checklist of the fish fauna of the Araçá Bay, São Sebastião Channel, northern coast of São Paulo, Brazil

Check List ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 2004 ◽  
Author(s):  
Rafael Andrei Lamas ◽  
Carmen Lúcia Del Bianco Rossi-Wongtschowski ◽  
Riguel Feltrin Contente
Keyword(s):  
Fish Species ◽  
Native Species ◽  
Conservation Status ◽  
High Tide ◽  
Fish Fauna ◽  
Sao Paulo ◽  
Tide Pool ◽  
Northern Coast ◽  
São Paulo ◽  
Western Atlantic

This paper presents for the first time a checklist of the fish fauna of Araça Bay, São Sebastião Channel, northern coast of São Paulo state, Brazil. Fishes were sampled in five surveys from October 2012 to February 2014 using nine different types of sampling gear during high tide. Tide pool fishes were also sampled in four surveys from March to October 2014. Geographic distribution and conservation status of each species are reported. A total of 126 species was recorded in Araçá Bay, including two non-native species and new records in the São Sebastião region for 16 species. The fish species richness found in Araçá Bay was greater than the previously recorded for the São Sebastião Channel and other adjacent areas. Most of the Araçá fish species show a wide distribution along the western Atlantic Ocean (32%). Few species are included in the international (29%) and Brazilian (3.3%) official lists of threatened species.

scholarly journals Zooplankton fluctuations in Jurumirim Reservoir (São Paulo, Brazil): a three-year study

2009 ◽  
Vol 69 (1) ◽  
pp. 1-18 ◽  
Author(s):  
LP. Sartori ◽  
MG. Nogueira ◽  
R. Henry ◽  
EM. Moretto
Keyword(s):  
Water Column ◽  
Oxygen Concentration ◽  
Retention Time ◽  
Sao Paulo ◽  
Seasonal Effect ◽  
São Paulo ◽  
Low Oxygen ◽  
High Concentration ◽  
Heterogeneous Distribution ◽  
Low Oxygen Concentration

During three consecutive years, monthly samples of zooplankton were taken in the lacustrine (dam) zone of Jurumirim (São Paulo, Brazil). The seasonal effect on basic limnological features (thermal regime, oxygen distribution, phytoplankton biomass, etc.) was also examined. The influence of the seasonality on the fluctuation of the zooplankton composition and abundance was not clearly detected (low degree of recurrent patterns). Rotifers (32 taxa) were the most abundant organisms during almost the entire study period with some seasonal alternations in the maximum abundance peaks of the main taxa (Conochilus unicornis, Keratella americana, K. cochlearis and Hexarthra spp.), except for Polyarthra (mainly P. vulgaris). Only occasionally copepods were numerically dominant. Higher copepod abundance was positively associated to periods of increase in the water retention time. Among the Copepoda (10 taxa) the calanoids (mainly Notodiaptomus iheringi) were more abundant, especially in warmer periods. Conversely, cyclopoids had higher abundance in autumn and winter. The species Thermocyclops minutus and T. decipiens co-occurred, but the first attained higher abundance. Some evidence of co-existence strategies between both species are considered. Cladocera (17 taxa) was never numerically dominant and the main taxa (Bosmina spp., Ceriodaphnia spp. and Diaphanosoma spp.) occurred almost the whole study period and did not present a seasonal pattern of fluctuation. Diaphanosoma (mainly D. birgei) attained the highest abundance among cladocerans. Most organisms were always found at the surface, but they also occupy the whole water column, even in periods of stratified conditions and low oxygen concentration in the bottom layers. Among the main zooplanktonic taxa, only Hexarthra avoids deep layers. An exceptionally high concentration of Copepoda nauplii on the surface was influenced by low transparency, high concentration of phytoplankton at this layer and low oxygen concentration at the bottom. In periods of higher retention timevariability there was a more heterogeneous distribution of the zooplankton in the water column. The increase in the retention time seems also to favor the copepod development. Finally, some inter-decade changes are considered on the basis of zooplankton assemblage structure observations.

Analysis of fish communities along a rural–urban gradient in a neotropical stream (Piracicaba River Basin, São Paulo, Brazil)

Hydrobiologia ◽  
2010 ◽  
Vol 641 (1) ◽  
pp. 97-114 ◽  
Author(s):  
Cleber Valim Alexandre ◽  
Katharina Eichbaum Esteves ◽  
Mônica Accaui Marcondes de Moura e Mello
Keyword(s):  
River Basin ◽  
Fish Communities ◽  
Sao Paulo ◽  
São Paulo ◽  
Urban Gradient ◽  
Neotropical Stream ◽  
Piracicaba River

scholarly journals Seasonal variation of femoral fractures in the state of São Paulo, Southeast Brazil

2019 ◽  
Vol 53 ◽  
pp. 55 ◽  
Author(s):  
Mônica Marin de Souza ◽  
Eniuce Menezes de Souza ◽  
Altacílio Aparecido Nunes ◽  
Edson Zangiacomi Martinez
Keyword(s):  
Hospital Admissions ◽  
Age Groups ◽  
Femoral Fractures ◽  
Sao Paulo ◽  
The State ◽  
Seasonal Effects ◽  
Seasonal Effect ◽  
Consecutive Series ◽  
São Paulo ◽  
Female Population

OBJECTIVE: To examine the effect of seasonality on femoral fracture incidence among people residing in the state of São Paulo, Brazil. METHODS: Ecological study based on a consecutive series of 216,348 reports of hospital admissions caused by femoral fractures. A Bayesian statistical model was used for time series analysis, considering the monthly average number of events of femoral fractures per day as a dependent variable. RESULTS: Among the female population, significant seasonal effects were observed only for older women, aged 60 years or more. Among younger men (aged less than 20 years) there is not a clear seasonal effect, but among the other age groups there seems to exist a higher number of cases of femoral fractures during the coldest months of the year. CONCLUSIONS: In general, more cases of fractures occur during the coldest months of the year; however, men and women have different patterns of incidence according to each age group.

scholarly journals First occurrence of Protapanteles (Protapanteles) enephes (Nixon, 1965) (Hymenoptera, Braconidae, Microgastrinae) in Brazil and new biological data

2011 ◽  
Vol 71 (3) ◽  
pp. 735-738 ◽  
Author(s):  
AM. Penteado-Dias ◽  
LBR. Fernandes ◽  
LGR. Iemma ◽  
MM. Dias
Keyword(s):  
Sao Paulo ◽  
Biological Data ◽  
São Paulo ◽  
Male And Female ◽  
Paulo State ◽  
First Occurrence ◽  
São Paulo State ◽  
First Time

Protapanteles (Protapanteles) enephes (Nixon, 1965) (Hymenoptera, Braconidae, Microgastrinae) was reared from the host Fountainea ryphea phidile (Geyer, 1837) (Lepidoptera, Nymphalidae, Charaxinae), collected on Croton floribundus Spreng. (Euphorbiaceae) in São Carlos, São Paulo state, Brazil. The hyperperparasitoids Conura sp. (Hymenoptera, Chalcididae) and a Pteromalidae species are registered on this microgastrine species. Male and female specimens and cocoon of Protapanteles (Protapanteles) enephes are illustrated for the first time.

scholarly journals Income evaluation of small - scale fishers in two brazilian urban reservoirs: Represa Billings (SP) and Lago Paranoá (DF)

2006 ◽  
Vol 66 (3) ◽  
pp. 817-828 ◽  
Author(s):  
M. Petrere Jr. ◽  
T. Walter ◽  
C. V. Minte-Vera
Keyword(s):  
Fish Fauna ◽  
Sao Paulo ◽  
Capital City ◽  
Metropolitan Region ◽  
Native Fish ◽  
Small Scale ◽  
São Paulo ◽  
Small Scale Fisheries ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Significant Difference

The income of small-scale fisheries of two urban reservoirs in Brazil: Represa Billings (127 km²) located in the metropolitan region of São Paulo, the capital city of the state of São Paulo and Lago Paranoá (38 km²) located in Brasília (DF), the capital city of Brazil were calculated and compared. Both fisheries are mainly based on the alien Nile tilapia Oreochromis niloticus (more than 80% of the total catch). Although these reservoirs are nearly 900 km apart, their native fish fauna belong to the Upper Paraná Province. The Represa Billings fishers have, on average, a daily profit of R$ 15.8 (U$ 8.4 mostly employing gill nets) and Lago Paranoá fishers R$ 46.6 (U$ 24.9, mostly employing cast nets), which is a statistically significant difference (P < 0.001). The profit of the fisheries is explained by the factor "reservoir" and covariate "days of fishing". Due to the increasing violence in the metropolitan region of São Paulo, the Represa Billings fishery is vanishing.

scholarly journals Fish distribution in watersheds of the eastern part of the Serra da Mantiqueira (state of São Paulo)

2014 ◽  
Vol 74 (2) ◽  
pp. 302-310
Author(s):  
FMS. Braga ◽  
AL. Carmassi ◽  
G. Rondineli ◽  
JMRMF. Lourenço
Keyword(s):  
Species Abundance ◽  
Fish Fauna ◽  
Abundant Species ◽  
Physical Structure ◽  
Sao Paulo ◽  
Fish Distribution ◽  
São Paulo ◽  
Species Dominance ◽  
Morphological Adaptations ◽  
Distribution Of Fish

The present work aims to analyse jointly four contiguous watersheds in the eastern part of the Serra da Mantiqueira with respect to the distribution of fish fauna and physical structure. The watersheds of Piracuama river, Ribeirão Grande, Buenos and Guaratinguetá are located in Pindamonhangaba, Campos do Jordão and Guaratinguetá municipalities, in the state of São Paulo. Data were collected between the years 2001 and 2010, with collections distributed throughout the seasons, including sites located on the slope and piedmont. The limnological parameters analysed were different between watersheds and habitat structure was different only for the slope segments between Ribeirão Grande and Buenos watersheds, and between Ribeirão Grande and Piracuama watersheds. Thirty-five species of fish were caught, with the highest species richness found in the Ribeirão Grande watershed (30 species), followed by the Piracuama (23 species) and Buenos and Guaratinguetá (21 species each). The most abundant species in both the segments (slope and piedmont) was Trichomycterus itatiayae. The highest degree of species dominance occurred in the Guaratinguetá watershed and in the segment slope, being T. itatiayae the dominant species. Species diversity was lower at the slope than the piedmont, indicating variability in species abundance. Again T. itatiayae was the most abundant species in both segments, showing to be a well adapted species to these streams systems by presenting, as well as other species, morphological adaptations to the stream environment.

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