scholarly journals A widespread necrotizing disease affecting Palythoa caribaeorum (Duchassaing and Michelotti, 1860) on coastal reefs in northeastern Brazil

2020 ◽  
Vol 68 ◽  
Author(s):  
Cristiane Francisca Costa-Sassi ◽  
Roberto Sassi ◽  
Gabriel Malta de Farias
Keyword(s):  
Northeastern Brazil ◽  
Palythoa Caribaeorum

scholarly journals Competitive interactions among zoanthids (cnidaria: zoanthidae) in an intertidal zone of northeastern Brazil

2013 ◽  
Vol 61 (1) ◽  
pp. 35-42 ◽  
Author(s):  
Emanuelle Fontenele Rabelo ◽  
Marcelo de Oliveira Soares ◽  
Helena Matthews-Cascon
Keyword(s):  
Intertidal Zone ◽  
Northeastern Brazil ◽  
Competitive Interactions ◽  
Aggressive Interaction ◽  
Reef Environment ◽  
Palythoa Caribaeorum ◽  
The Face ◽  
Similar Growth ◽  
Sessile Organisms ◽  
Intertidal Environments

Sessile organisms that live in consolidated substrates frequently compete for space. Coral species have many strategies to face this competition, including harming their opponents or hindering their growth. In the present study, the competitive interactions between three species of zoanthids were investigated in the intertidal zone of a sandstone reef environment in northeastern Brazil. The competitive abilities of the three species were evaluated by periodic observation of the natural fringes of contact and experimental evaluation of their growth rate through removal of 100 cm² of colonies of each species. Palythoa caribaeorum and Zoanthus sociatus had similar growth rates, and both species grew faster than Protopalythoa variabilis. The recolonization strategy seems to differ among species. The contact fringes between P. caribaeorum and Z. sociatus remained unchanged over time, without any type of aggressive interaction between them, suggesting that stand-off was the strategy used by these organisms. Palythoa caribaeorum and Z. sociatus grew among the polyps of P. variabilis, often killing its colonies. The coexistence of zoanthids reveals a capacity for survival in the face of competition for limited resources such as free substrate, which led to the colonization and establishment of zoanthids in intertidal environments.

scholarly journals The effect of climate change on the distribution of a tropical zoanthid (Palythoa caribaeorum) and its ecological implications

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4777 ◽  
Author(s):  
Leonardo M. Durante ◽  
Igor C.S. Cruz ◽  
Tito M.C. Lotufo
Keyword(s):  
Climate Model ◽  
Global Climate ◽  
Climate Scenario ◽  
Information Criterion ◽  
Caribbean Sea ◽  
Northeastern Brazil ◽  
Distribution Model ◽  
Brazilian Coast ◽  
Palythoa Caribaeorum ◽  
Suitable Habitats

Palythoa caribaeorumis a zoanthid often dominant in shallow rocky environments along the west coast of the Atlantic Ocean, from the tropics to the subtropics. This species has high environmental tolerance and is a good space competitor in reef environments. Considering current and future scenarios in the global climate regime, this study aimed to model and analyze the distribution ofP. caribaeorum, generating maps of potential distribution for the present and the year 2100. The distribution was modeled using maximum entropy (Maxent) based on 327 occurrence sites retrieved from the literature. Calcite concentration, maximum chlorophyll-aconcentration, salinity, pH, and temperature range yielded a model with the smallest Akaike information criterion (2649.8), and were used in the present and future distribution model. Data from the HadGEM2-ES climate model were used to generate the projections for the year 2100. The present distribution ofP. caribaeorumshows that parts of the Brazilian coast, Caribbean Sea, and Florida are suitable regions for the species, as they are characterized by high salinity and pH and small temperature variation. An expansion of the species’ distribution was forecast northward under mild climate scenarios, while a decrease of suitable areas was forecast in the south. In the climate scenario with the most intense changes,P. caribaeorumwould lose one-half of its suitable habitats, including the northernmost and southernmost areas of its distribution. The Caribbean Sea and northeastern Brazil, as well as other places under the influence of coastal upwellings, may serve as potential havens for this species.

scholarly journals Growth of the tropical zoanthid Palythoa caribaeorum (Cnidaria: Anthozoa) on reefs in northeastern Brazil

2015 ◽  
Vol 87 (2) ◽  
pp. 985-996 ◽  
Author(s):  
JANINE F. SILVA ◽  
PAULA B. GOMES ◽  
ERIKA C. SANTANA ◽  
JOÃO M. SILVA ◽  
ÉRICA P. LIMA ◽  
...  
Keyword(s):  
Growth Rate ◽  
Northeastern Brazil ◽  
Site Location ◽  
Bare Area ◽  
Average Growth ◽  
Continuous Growth ◽  
Palythoa Caribaeorum ◽  
Colony Site ◽  
One Year ◽  
Intrinsic Characteristic

In Brazilian reefs, zoanthids, especially Palythoa caribaeorum are fundamental for structuring the local benthic community. The objective of this study was to determine the growth rate of P. caribaeorum, and to assess the influence of the site (different beaches), season (dry and wet), location (intertidal or infralittoral zones), and human pressure associated with tourism. For one year we monitored the cover of P. caribaeorum in transects and focused on 20 colonies. We cut off a square (100 cm2) from the central part of the colony and monitored the bare area for four months in each season. The average growth rates varied from 0.015 and 0.021 cm.day-1. The rate was homogeneous in all localities, and there was no influence from colony site, location, or touristic visitation, showing that the growth velocity may be an intrinsic characteristic of the species, with a strong genetic component. The growth rate of P. caribaeorum differed among months, and peaked in the first month after injury. The average cover varied from 6.2 to 22.9% and was lower on the reef visited by tourists. The present study corroborates the hypothesis that P. caribaeorum is important for coastal reef dynamics due to its fast and continuous growth.

Chemical evaluation and microbiological assays of medicinal plants used in traditional communities in northeastern Brazil

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
JP Ferreira-Neto ◽  
RJSA Padilha ◽  
ERB Santana ◽  
DN Gomes ◽  
KXFR Sena ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Northeastern Brazil ◽  
Chemical Evaluation ◽  
Microbiological Assays ◽  
Traditional Communities

Cryptosporidium spp. and Giardia sp. in aquatic mammals in northern and northeastern Brazil

2017 ◽  
Vol 126 (1) ◽  
pp. 25-31 ◽  
Author(s):  
JCG Borges ◽  
DS Lima ◽  
EM da Silva ◽  
ALO Moreira ◽  
M Marmontel ◽  
...  
Keyword(s):  
Northeastern Brazil ◽  
Cryptosporidium Spp ◽  
Aquatic Mammals

Brazilian Ayahuasca Religions

2008 ◽  
Vol 2 (2) ◽  
pp. 177-186
Author(s):  
Robin Wright
Keyword(s):  
Indigenous Peoples ◽  
Field Research ◽  
Northeastern Brazil ◽  
Religious Movements ◽  
New Religious Movements ◽  
New Directions ◽  
Rubber Tappers ◽  
The 1960S ◽  
Legal Expertise ◽  
Religious Understanding

This article reviews the forthcoming issue of FIR containing an important collection of articles on the origins and developments of religious movements and, later, research movements focused on a powerful psychoactive beverage consisting of the mixture of certain vines (ayahuasca) and leaves (chacrona) found mainly in Western Amazonia. The religious interpretations resulting from the ritual ingestion of the beverage have produced the most varied practices and beliefs, beginning with the indigenous peoples and mestizo herbalists, then migrant rubber-tappers from northeastern Brazil; in the 1960s, urbanites from major cities in Brazil and Europe seeking alternative forms of religious inspiration; and, in the 1990s, a group of Brazilian researchers who have combined anthropological and religious understanding of the phenomena along with legal expertise for the protection of the religious freedom necessary for the religions’ developments. With the diversification and globalization of these new religious movements, the article points to new directions for field research in these religions.

Clinical, epidemiological and climatic factors related to the occurrence of cutaneous leishmaniasis in an endemic area in northeastern Brazil

2020 ◽  
Author(s):  
R. S. Oliveira ◽  
K. B. A. Pimentel ◽  
M. L. Moura ◽  
C. F. Aragão ◽  
A. S. Guimarães-e-Silva ◽  
...  
Keyword(s):  
Cutaneous Leishmaniasis ◽  
Climatic Factors ◽  
Wide Distribution ◽  
Northeastern Brazil ◽  
Public Health Issue ◽  
Air Humidity ◽  
Disease Occurrence ◽  
Relative Air Humidity ◽  
Age Range ◽  
And Control

Abstract Cutaneous leishmaniasis (CL) is a neglected tropical disease with a wide distribution in the Americas. Brazil is an endemic country and present cases in all states. This study aimed to describe the occurrence, the underlying clinical and epidemiological factors, and the correlation of climatic variables with the frequency of reported CL cases in the municipality of Caxias, state of Maranhão, Brazil. This is a retrospective and descriptive epidemiological study based on data extracted from the Brazilian Information System of Diseases Notification, from 2007 to 2017. Maximum and minimum temperature, precipitation, and relative air humidity data were provided by the Brazilian National Institute of Meteorology. A total of 201 reported autochthonous CL cases were analyzed. The predominance of cases was observed in males (70.1%). The age range between 31 and 60 years old was the most affected, with 96 cases (47.9%). Of the total number of registered cases, 38.8% of the affected individuals were engaged in agriculture-related activities. The georeferenced distribution revealed the heterogeneity of disease occurrence, with cases concentrated in the Western and Southern regions of the municipality. An association was detected between relative air humidity (monthly mean) and the number of CL cases per month (p = 0.04). CL continues to be a concerning public health issue in Caxias. In this context, there is a pressing need to strengthen measures of prevention and control of the disease through the network of health services of the municipality, considering local and regional particularities.

A Synopsis of Dicliptera (Acanthaceae) in Brazil, with the Description of Two New Species

2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas
Keyword(s):  
New Species ◽  
South America ◽  
The State ◽  
Northeastern Brazil ◽  
Mato Grosso ◽  
The North ◽  
New Synonyms ◽  
Two New Species ◽  
Mato Grosso Do Sul ◽  
A New Species

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.

A New Species of Justicia (Acanthaceae: Acanthoideae: Justicieae) from Northeastern Brazil

2020 ◽  
Vol 45 (2) ◽  
pp. 328-333
Author(s):  
Camila Alcantara ◽  
Gleison Soares ◽  
Francisco de Assis Ribeiro dos Santos ◽  
Marccus Alves
Keyword(s):  
New Species ◽  
Rio Grande ◽  
Morphological Characters ◽  
Northeastern Brazil ◽  
Distribution Map ◽  
Key To Species ◽  
A New Species

Abstract—Justicia rubrobracteata, a new species from northeastern Brazil, is described and illustrated. The new species is morphologically similar to J. aequilabris due to its shrubby habit, and terminal and axillary spicate inflorescences with red flowers. However, J. rubrobracteata is differentiated mainly by the shape and color of its bracts and bracteoles as well as an orangish macula in the corolla, and a torulose capsule. In addition, J. rubrobracteata is only known from northeastern Brazil, from the states of Paraíba and Rio Grande do Norte, while J. aequilabris is widely distributed in Bolivia, Brazil, and Paraguay. A table with the main morphological characters of both species is included, as well as photographs, a key to species of Justicia for the states of Paraíba and Rio Grande do Norte in northeastern Brazil, a distribution map of both species, and conservation data for the new species.

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