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| Registros recuperados: 737 | |
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| ROTUNDO,Matheus Marcos; MACHADO,Leonardo; OLIVEIRA,Claudio; SANTOS,Wagner César Rosa dos; MARCENIUK,Alexandre Pires. |
| ABSTRACT As they spend most of their time buried in the substrate and are not a fishery resource, heterenchelyids are seldom seen. These eels are characterized by their greatly reduced eyes, which are covered by semi-transparent skin, the absence of a pectoral fin or lateral line, and no pores on the head or body. Pythonichthys sanguineus is a particularly poorly-known species, with only eight scientific records from Cuba, Puerto Rico, Colombia, Venezuela, Guyana, and Suriname. The present study is based on six adult specimens of P. sanguineus captured by vessels of the shrimp trawling fleet along the northern Brazilian coast, in the vicinity of the Amazon Reef. We provide meristic, morphometric and DNA barcoding data. These findings provide insights into... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fisheries; Conservation; Brazilian northern coast; New record; Systematics. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000200131 |
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| LOPES,Marcelly Castello Branco; CARVALHO,Gabriel Oliveira de; BERNARDO,Robson Roney; MACEDO,Joana; LINO,Adan Santos; RAMALHO,Emiliano Esterci; KASPER,Daniele; MEIRE,Rodrigo Ornellas; TORRES,João Paulo Machado; MALM,Olaf. |
| ABSTRACT This is the first study to investigate mercury (Hg) contamination in felid species in the Brazilian Amazon. We collected 26 fur samples from wild felids of four species (Puma concolor, Panthera onca, Leopardus pardalis and Leopardus wiedii) occurring in the Mamirauá and Amanã sustainable development reserves, in the state of Amazonas. Samples were from museum specimens, except for five P. onca samples collected from free-living individuals. Total Hg concentrations ranged from 0.12 to 48.1 µg g-1. Concentrations of Hg did not differ significantly between museum specimens and live individuals of P. onca, but varied significantly among species, with significantly higher concentrations for P. onca and L. pardalis, which could be related to factors... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Mammals; Bioaccumulation; Fur; Heavy metals. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000200142 |
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| HOFFMANN,Lúcia Vieira; CARDOSO,Kálita Cristina Moreira; ROCHA,Antônio Sabino Neto da Costa; OLIVEIRA,Aryanny Irene Domingues de; ABREU,Aluana Gonçalves; PEREIRA,Caio César de Oliveira; MALAFAIA,Guilherme; MENEZES,Ivandilson Pessoa Pinto de. |
| ABSTRACT The Amazon Basin is a center of diversity of Gossypium barbadense and the strategy for conservation of this genetic resource depends on the knowledge of the diversity maintained in Amazonas State. During two expeditions, in 2012 and 2014, plants were collected in ten municipalities in the state of Amazonas, in the central Brazilian Amazon region. The molecular diversity was estimated by SSR markers for 50 samples collected in 2012. The morphological diversity of 24 plants collected in 2014 was assessed ex situ and compared to that of 50 plants of the same and other cotton varieties from other Brazilian states. Most of plants evaluated in situ in Amazonas had purple petioles and veins (82%), associated to medicinal use, and kidney seeds (78%). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Genetic resources; Cotton tree; Phenotypic characterization. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000100001 |
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| FERREIRA,Gisele Cassundé; STURARO,Marcelo J.; PELOSO,Pedro L. Vieira. |
| ABSTRACT Amazonia harbors the largest and most diverse tropical forest in the world, but knowledge about the species diversity of the region is still far from ideal. Given this low level of faunal and floral knowledge, we present an annotated list of the species of amphibians and reptiles found in Floresta Nacional do Pau-Rosa (FNPR), along the Rio Paraconi, municipality of Maués, state of Amazonas, Brazil. Herpetofauna of the FNPR was sampled with pitfall traps, active search and occasional encounters from February 18 to March 28, 2009. A total of 270 specimens were collected, representing 39 species of amphibians and 24 species of reptiles. At least seven of the species collected at FNPR represented, at the time, unnamed taxa (four of which have now been... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon Basin; Biodiversity; Checklist; Conservation; Herpetology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300259 |
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| HELENBROOK,William. D.; WILKINSON,Madison L.; SUAREZ,Jessica A.. |
| ABSTRACT The black-headed night monkey, Aotus nigriceps, has one of the largest distribution ranges of the 11 night monkey species found across Central and South America. Yet, only three studies have focused on their ecology, describing considerable variation in habitat, group composition, and population density. Therefore, we analyzed habitat use, group composition, population density, and diet of 14 groups at two field sites in southeastern Peru. All sampled groups were found in secondary tropical rainforest, often dominated by native bamboo species. Half of the observed sleeping sites were in bamboo stands, though groups also emerged from cane thickets and lianas. This contrasts with other Aotus studies which have found groups living in tree cavities... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Primates; Aotidae; Conservation; Owl monkey; Nocturnal; Habitat. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000100037 |
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| MIYAHIRA,Igor Christo; MANSUR,Maria Cristina Dreher; PIMPÃO,Daniel Mansur; COUCEIRO,Sheyla Regina Marques; SANTOS,Sonia Barbosa dos. |
| ABSTRACT Diplodon granosus was one of the first freshwater mussels to be described for South America. However, the status of the species was confusing for a long time, receiving different taxonomic treatments. In this paper, we redescribe the shell, with new data on the soft parts and information on the distribution and conservation of D. granosus, a rarely recorded species. The shell is thin, not inflated; the macrosculpture is composed only by granules that cover the whole shell, not forming bars; the microsculpture comprises short spikes. In the soft parts we highlight the few, weak and irregularly distributed lamellar connections of the outer demibranch and some features of the stomach, such as the distally enlarged minor typhlosole. There are records... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Unionida; Hyriidae; Rhipididontini; Taxonomy; Conservation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000100044 |
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| SABATER,SERGI; ELOSEGI,ARTURO. |
| Rivers are among the most diverse and threatened ecosystems on the Earth, but their conservation is a requisite for sustainable development. Conservation must consider both the structure and the functioning of the elements (usually species), as well as of their ecosystem. Therefore, successful river conservation must go beyond protecting species to protecting entire ecosystems and the processes that give each ecosystem its special characteristics. River conservation has to meet the legitimate aspirations of human populations for clean, readily available supply of water, without compromising the water needs of ecosystems and nature. Therefore, it is essential to take a landscape perspective that incorporates processes occurring in the riverine riparian... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Andean; Biodiversity; Conservation; Ecosystem functioning river. |
| Ano: 2014 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2014000100001 |
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| SEDREZ,Mário Cesar; BARRILLI,Germano Henrique Costa; FRAGOSO-MOURA,Evelise Nunes; BARREIROS,João Pedro; BRANCO,Joaquim Olinto; VERANI,José Roberto. |
| ABSTRACT Shrimp trawling directly impacts target species and non-target species, altering micro-habitats and marine trophic webs. Thus, the objective of the present research was to analyze the feeding habits of Paralonchurus brasiliensis as a tool to evaluate the impact of trawling on the food chains in marine environments, in the South Atlantic of Brazil. One thousand and nineteen stomachs of P. brasiliensis were dissected after being captured as bycatch of shrimp Xiphopenaeus kroyeri, in Penha, on the north central coast of Santa Catarina, Brazil. The number of stomachs was enough to describe the feeding habits of P. brasiliensis, characterizing it as a carnivorous species and predominantly invertivorous. They also revealed that this species has a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Accompanying fauna; Bottom trawling; Conservation; Fish; Fisheries. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000300335 |
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| CEBALLOS,CLAUDIA P.; BRAND,WILLIAM A.. |
| The phylogenetic relationships of the Mesoamerican Slider, Trachemys venusta, that inhabits the Atrato River basin of Colombia have been controversial as three different names have been proposed during the last 12 years: T. v. venusta, T. v. uhrigi, and T. ornate venusta. Using a group of sliders that was confiscated by the regional authority we compared the morphology of T. venusta distributed in the Atrato River with the morphology of the subspecies putatively distributed in Colombia. We found that the Colombian Mesoamerican slider has an overall smaller size, different plastral inter-scute seam formula, and different head, carapace and plastron coloration patterns. In addition, we also report the poor health condition of these individuals that have... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Dermatitis; Health; Taxonomy; Traffic. |
| Ano: 2014 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2014000300014 |
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| ACEVEDO,Aldemar A.; ARMESTO SANGUINO,Orlando; OLARTE QUIÑÓNEZ,Camilo Andrés; SOLANO,Liliana; ALBORNOZ ESPINEL,Mónica María; CABRERA,James Alexis; CARRERO SARMIENTO,Diego Armando. |
| ABSTRACT We present an estimation of the potential species richness of frogs, and diurnal butterflies distributed in the departments of Norte de Santander and Santander, Colombia, and analyze the implications for conservation of such high Andean species. From June 2012 to May 2016, we sampled across the Almorzadero, Santurbán and Tamá biogeographical units to gather presence data of 7 anuran species and 29 butterflies species from the superfamily Papilionoidea. We modeled the potential distribution of each species, converted every model to binary, and the sum up of unique species per cell allowed to estimate the model of potential richness, generating the total number of species for every 1 km2 cell. Every model was validated against field data, vegetation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogeography; Biological diversity; Conservation; High Andean species; Species distribution models. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2018000200151 |
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| Sousa,Ronaldo Viveiros de; Câmara,Paulo Eduardo Aguiar Saraiva. |
| Serra do Cipó has attracted the interest of many researchers over the years because of its unique characteristics, particularly the fact that the site represents the transition between Cerrado and Atlantic Forest. The study area of Serra do Cipó is located along a gallery forest "córrego Três Pontinhas," at 19°16'00" S and 43°32'49" W and an altitude of 1,188 m. The objective of this study was to survey the Division Bryophyta in a gallery forest within the National Park of Serra do Cipo, Minas Gerais. Collections were made during the months of November 2009 and July 2011. We found 15 families, 26 genera, 43 species, and 4 varieties of mosses. The families with the largest number of species were Leucobryaceae (10), Sematophyllaceae (9), and Calymperaceae... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acrocarpous; Bryophyta; Conservation; Mosses; New records; Pleurocarpous; Taxonomy. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000100024 |
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| Paschoa,Roberta Pena da; Christ,Jheniffer Abeldt; Valente,Cecília Silva; Ferreira,Marcia Flores da Silva; Miranda,Fábio Demolinari de; Garbin,Mário Luís; Carrijo,Tatiana Tavares. |
| ABSTRACT Although a species’ sexual system may influence the genetic diversity of its populations in their natural environment, there have been few such studies involving indigenous species of the Atlantic Forest. Here we study Myrsine coriacea, a dioecious tree widely used in reforestation programs despite a lack of information about its natural interpopulation genetic variation. To address this knowledge gap, intra- and interpopulation genetic diversity were measured for male and female individuals of ten natural populations using ISSR markers. Greater intrapopulation genetic diversity indicated interpopulation gene flow, regardless of isolation and distance between populations. Multivariate analyses detected significant differences in genetic diversity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capororoca; Conservation; ISSR; Myrsinaceae; Rapanea. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000300376 |
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| Reis,Simone Matias; Lenza,Eddie; Marimon,Beatriz Schwantes; Gomes,Letícia; Forsthofer,Mônica; Morandi,Paulo Sérgio; Marimon Junior,Ben Hur; Feldpausch,Ted R.; Elias,Fernando. |
| ABSTRACTFire can change the species composition, diversity, and structure of savanna vegetation, thus altering growth and mortality rates. Such changes in the woody vegetation of burned savanna forest were evaluated over four years in comparison to unburned savanna forest. All woody plants with a diameter at breast height > 10 cm were measured in 100 permanent plots. Six months later, 38 of these plots were burned. Three and a half years later, all surviving individuals were re-sampled. Species richness, diversity, and the number of individuals did not change in the burned plots, although they had significantly higher (p < 0.05) increases in basal area and mortality rates (5.1% year-1) than the unburned plots (3.0% year-1).Tachigali vulgarishad the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Land-use change; Mortality; Structural and floristic changes; Wildfire. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000300408 |
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| Registros recuperados: 737 | |
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