Niche occupancy in south-eastern Brazilian tadpole communities in montane-meadow streams

Microhabitat use by tadpole species was investigated in streams of montane meadows of the Serra do Cipó, south-eastern Brazil. Microhabitats were classified into 24 types based on water depth, current, aquatic vegetation and substrate type, and quantified in 16 streams. A total of 844 tadpoles from 19 species was recorded, as well as microhabitat types used. Tadpoles, from all species pooled, used microhabitat types in the proportions available in the set of sampled streams. Diversity of microhabitats used was considered as a measure of niche breadth for tadpoles, and microhabitat diversity in streams was interpreted as available niche space. For the most part, species used microhabitats in different proportions, and conspecifics differed in microhabitat use among different streams. Neither niche breadths nor niche overlaps of tadpoles could be related to the number of species occupying streams. Thus not all available niche space may be occupied by tadpole species. More generalist species (those with broader niches) did not generally occupy more streams. Behavioural flexibility of tadpoles in microhabitat use may be a response to the unpredictability of the montane-meadow stream habitat. The role of adult anurans in choosing oviposition sites may also influence the distribution of tadpole species among streams.

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The role of nectar production, flower pigments and odour in the pollination of four species of Passiflora (Passifloraceae) in south-eastern Brazil

Botanical Journal of the Linnean Society ◽

10.1111/j.1095-8339.2001.tb00563.x ◽

2001 ◽

Vol 136 (2) ◽

pp. 139-152 ◽

Cited By ~ 51

Author(s):

ISABELA GALARDA VARASSIN ◽

JOSÉ ROBERTO TRIGO ◽

MARLIES SAZIMA

Keyword(s):

Nectar Production ◽

South Eastern ◽

Eastern Brazil ◽

Flower Pigments

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Microhabitat use and feeding habits ofCrossodactylus bokermanniCaramaschi and Sazima, 1985 (Anura, Hylodidae) at a site in south‐eastern Brazil

Journal of Natural History ◽

10.1080/00222930802069070 ◽

2008 ◽

Vol 42 (19-20) ◽

pp. 1421-1434 ◽

Cited By ~ 7

Author(s):

Milena Wachlevski ◽

Paulo H. C. De Souza ◽

Katia Kopp ◽

Paula C. Eterovick

Keyword(s):

Feeding Habits ◽

Microhabitat Use ◽

South Eastern ◽

Eastern Brazil ◽

A Site

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The role of plumes in Eriotheca pentaphylla (Bombacaceae) seed survival in south-eastern Brazil

Journal of Tropical Ecology ◽

10.1017/s0266467400010312 ◽

1997 ◽

Vol 13 (1) ◽

pp. 133-138 ◽

Cited By ~ 6

Author(s):

Erich A. Fischer

Keyword(s):

Seed Survival ◽

South Eastern ◽

Eastern Brazil

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The activity patterns and microhabitat use of Pseudis minuta Günther, 1858 (Anura, Hylidae) in the Lagoa do Peixe National Park, a biosphere reserve of the brazilian subtropics

Brazilian Journal of Biology ◽

10.1590/s1519-69842012000200014 ◽

2012 ◽

Vol 72 (2) ◽

pp. 331-336 ◽

Cited By ~ 10

Author(s):

S. Huckembeck ◽

M. Claudino ◽

F. Correa ◽

RF. Bastos ◽

D. Loebmann ◽

...

Keyword(s):

National Park ◽

Aquatic Vegetation ◽

Abiotic Factors ◽

Activity Patterns ◽

Seasonal Fluctuation ◽

Biosphere Reserve ◽

Coastal Dunes ◽

Microhabitat Use ◽

Generalist Species ◽

Pseudis Minuta

Pseudis minuta is abundant in a variety of aquatic environments of the Pampa domain. Therefore, it can be considered a good model for testing hypotheses on environmental heterogeneity and the influence of climate on the activity of anurans. In this study, we examined the spatial distribution pattern of P. minuta in terms of microhabitats and the influence of abiotic factors on seasonal fluctuations in the abundance of this species. Samples were collected monthly from April 2008 to May 2009 in wetlands and coastal dunes in the Lagoa do Peixe National Park. A total of 112 specimens of P. minuta were collected, of which 45 were found in the wetland area and 67 in the dune area. The species showed seasonal fluctuation in abundance, and it was most abundant in months with higher temperatures (spring-summer). Pseudis minuta was mainly associated with aquatic vegetation, an expected pattern in terms of their morphological adaptations to this environment. Among the abiotic parameters analyzed, only the monthly mean temperature showed a significant correlation (p < 0.05; r = 0.67) with the abundance of P. minuta. We concluded that P. minuta is a generalist species with respect to microhabitat use and also that fluctuation in its population abundance is mainly associated with seasonal variation in temperature.

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Entre o nó e a rede, dialéticas espaciais contemporâneas: o caso da metrópole de Campinas diante da megalópole do Sudeste do Brasil

Revista Brasileira de Estudos Urbanos e Regionais ◽

10.22296/2317-1529.2007v9n1p41 ◽

2007 ◽

Vol 9 (1) ◽

pp. 41 ◽

Cited By ~ 2

Author(s):

Eugenio Fernandes Queiroga ◽

Denio Munia Benfatti

Keyword(s):

Metropolitan Area ◽

Essential Element ◽

South Eastern ◽

Eastern Brazil ◽

Informational Environment ◽

New Urbanization

Discute-se, diante do meio técnico-científico-informacional, o estabelecimento de novos processos de urbanização, particularmente relacionados à formação de uma nova entidade urbana no país: a Megalópole do Sudeste do Brasil. Destaca-se neste quadro a Metrópole de Campinas, pólo intermediário na rede urbana complexa e expansiva que compõe o território megalopolitano. A Região Metropolitana de Campinas apresenta-se como caso exemplar para o estudo da urbanização dispersa e para a compreensão de dialéticas espaciais que caracterizam, em boa medida, alguns importantes processos de urbanização contemporâneos. Afirma-se a complexidade megalopolitana como elemento fundamental para o entendimento da estruturação da metrópole campineira, indo além de sua classificação como metrópole regional ou incompleta.Palavras-chave: megalópole; metrópole contemporânea; dialéticas espaciais. Abstract:This work discusses, before the technical-scientific-informational environment, the establishment of new urbanization processes, particularly the scattered kind of urbanization that is related to the rising of a new urban entity in Brazil: the Megalopolis of South-Eastern Brazil. The Campinas metropolis stands out in this scene, as it plays the role of an intermediary in the complex and expanding urban net that composes the territory of the megalopolis. The Campinas metropolitan area presents itself as an exemplary case for the study of this scattered urbanization as well as for understanding the spatial dialectic that characterizes, to a great extent, important contemporary processes of urbanization. It is stated that the complexity of the megalopolis is an essential element in order to understand the structure of the Campinas metropolis, which goes beyond its classification as either a regional metropolis or an incomplete one.Keywords: megalopolis; contemporary metropolis; spatial dialectics

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The role of the CYP1A1 gene defects in cancer risk in south-eastern Brazil

Journal of Clinical Oncology ◽

10.1200/jco.2008.26.15_suppl.22115 ◽

2008 ◽

Vol 26 (15_suppl) ◽

pp. 22115-22115 ◽

Cited By ~ 1

Author(s):

S. N. Angelo ◽

G. G. Yamaguti ◽

G. J. Lourenço ◽

H. N. Honma ◽

E. F. Silva ◽

...

Keyword(s):

Cancer Risk ◽

South Eastern ◽

Eastern Brazil ◽

Cyp1a1 Gene ◽

Gene Defects

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Helminth communities of Leptodactylus latrans (Anura: Leptodactylidae) from the Atlantic rainforest, south-eastern Brazil

Journal of Helminthology ◽

10.1017/s0022149x1300076x ◽

2013 ◽

Vol 89 (2) ◽

pp. 250-254 ◽

Cited By ~ 7

Author(s):

G.M. Toledo ◽

D.H. Morais ◽

R.J. Silva ◽

L.A. Anjos

Keyword(s):

Species Richness ◽

Parasite Species ◽

Parasitic Infection ◽

Nematode Species ◽

Atlantic Rainforest ◽

Generalist Species ◽

South Eastern ◽

Helminth Communities ◽

Eastern Brazil ◽

Disturbed Environment

AbstractThe helminth fauna associated with Leptodactylus latrans, a large frog living in a disturbed environment of Atlantic rainforest in south-eastern Brazil, was evaluated. We found eight helminth taxa, including five nematode species, Falcaustra mascula, Oswaldocruzia subauricularis, Physaloptera sp., Rhabdias sp. and an unidentified cosmocercid, two trematodes, Gorgoderina parvicava and Haematoloechus fuelleborni, and one larval cestode. The overall prevalence of infection was 63.2% with a mean intensity of 11.3 ± 3.8. The cosmocercid nematode and O. subauricularis showed the highest prevalences, although the trematode G. parvicava was the most abundant and dominant parasite species. Host size positively influenced both the intensity of infection and parasite species richness. Our data suggest that the juvenile individuals of L. latrans are more susceptible to parasitic infection than the adults. The comparison of the similarity of this community component with that found in other studies in South America shows that, as well as the characteristics of the host, the sampling area also influences the parasitic fauna. Therefore, the results of this study agree that the helminth communities of frogs have relatively low species richness and dominance of generalist species.

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Studies on mosquitoes (Diptera: Culicidae) and anthropic environment: 9- Synanthropy and epidemiological vector role of Aedes scapularis in South-Eastern Brazil

Revista de Saúde Pública ◽

10.1590/s0034-89101995000300007 ◽

1995 ◽

Vol 29 (3) ◽

pp. 199-207 ◽

Cited By ~ 46

Author(s):

Oswaldo Paulo Forattini ◽

Iná Kakitani ◽

Eduardo Massad ◽

Daniel Marucci

Keyword(s):

Cultivated Land ◽

Considerable Decrease ◽

Clear Tendency ◽

Remarkable Increase ◽

Paulo State ◽

South Eastern ◽

Eastern Brazil ◽

Efficient Vector ◽

Developmental Phases

Behaviour comparisons of Aedes scapularis and Ae. serratus are presented. Results were obtained by sampling Aedes adult mosquitoes at several places in the rural anthropic environment in the Ribeira Valley region of S. Paulo State, Brazil. Aedes dominance was shared by those two species, but Ae. scapularis Sshowed a clear tendency to frequent the modified environment, while Ae. serratus was to be found in the more preserved ones, here represented by the vestigial patchy forests. Regarding the open cultivated land and the dwelling environments, Ae. scapularis preponderates. Considering the regional developmental phases, this mosquito showed a remarkable increase in the modified environment differently from Ae. serratus that underwent a considerable decrease in migrating from the forest to the anthropic environment. As a consequence of these results it is reasonable to conclude that Ae. scapularis may be considered as an epidemiologically efficient vector and that it quite probably played this role in the Rocio encephalitis and other arbovirus epidemics.

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