Acta Amazonica最新文献

Caputitermes, a new genus of soldierless termite (Blattaria: Isoptera: Termitidae) with dimorphic workers from the Amazon rainforest 亚马逊雨林无蚁蚁一新属(白蚁亚目:等翅目:白蚁科)

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202202511

Rayssa ALMEIDA-AZEVEDO, Agno Nonato Serrão ACIOLI, José Wellington de MORAIS, Renato Almeida de AZEVEDO

引用次数: 0

Nutritional characterization, antioxidant activity and bergenin content of the pulp of Endopleura uchi 紫胸膜果肉的营养特性、抗氧化活性和卑尔根素含量

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202202462

Régis Tribuzy de OLIVEIRA, Lorena Mota de CASTRO, Whendel Mesquita do NASCIMENTO, Maria Letícia de Sousa GOMES, Roseane Pinto Martins de OLIVEIRA, Ana Cecilia Nina LOBATO, Rita de Cássia Saraiva NUNOMURA, Carlos Victor Lamarão PEREIRA, Sandra Patrícia ZANOTTO

{"title":"Nutritional characterization, antioxidant activity and bergenin content of the pulp of Endopleura uchi","authors":"Régis Tribuzy de OLIVEIRA, Lorena Mota de CASTRO, Whendel Mesquita do NASCIMENTO, Maria Letícia de Sousa GOMES, Roseane Pinto Martins de OLIVEIRA, Ana Cecilia Nina LOBATO, Rita de Cássia Saraiva NUNOMURA, Carlos Victor Lamarão PEREIRA, Sandra Patrícia ZANOTTO","doi":"10.1590/1809-4392202202462","DOIUrl":"https://doi.org/10.1590/1809-4392202202462","url":null,"abstract":"ABSTRACT The yellow uxi (Endopleura uchi) is a tree native to the Amazon and its fruits are appreciated in the region. It is rich in total phenols and its bark is known to have high bergenin content, an isocoumarin derivative that presents several pharmacological activities. Yet the nutritional and functional properties of the fruit are still little known. We analyzed the nutritional, centesimal, and mineral properties, and the antioxidant activity and total phenol content of the alcoholic extract of yellow uxi fruit pulp from different locations in the Amazon. The bergenin content was also quantified. Average pulp yield was 45.66 ± 4.44% (w/w), with 60.1 - 89.2 g 100 g-1 of moisture and 1.28 - 1.32 g 100 g-1 of ash (dry basis). Calcium (78.2 - 87.1 mg 100 g-1) and potassium (260.2 - 395 mg 100 g-1) were the most abundant minerals in the pulp. Aluminum concentration was high compared to other Amazonian fruits (23.7 - 28.7 mg 100 g-1). The high caloric value of the pulp (325.3 ± 20.9 Kcal 100 g-1) is attributed to its lipid (32 - 44.9%) and carbohydrate (48.2 - 64.1%) content. The scavenging activity of DPPH was 1.95 - 20.68%, which was highly associated with the total phenolic content (16.91 - 30.07 µg GAE mg-1). Bergenin content was 180.8 ± 55.3 mg 100 g-1. We conclude that E. uchi pulp has high caloric and mineral content, and it is also a source of bergenin, thus this fruit has a potential nutritional and functional value.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135685998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kleptoparasitism attempt on a greater grison (Galictis vittata) by a white hawk (Pseudastur albicollis) in the Brazilian Amazon 巴西亚马逊地区，一只白鹰(Pseudastur albicollis)企图在一只更大的grison (Galictis vittata)上偷窃寄生

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202300090

Talita Vieira BRAGA, Ricardo Augusto Serpa CERBONCINI, Louri KLEMANN JUNIOR

引用次数: 0

Interpopulational genetic diversity in the medically important scorpion Tityus obscurus (Scorpiones: Buthidae) from northeastern Brazilian Amazonia 巴西亚马孙河东北部具有重要医学意义的天蝎(蝎目:蝎科)的种群间遗传多样性

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202202441

Pedro Pereira de Oliveira PARDAL, Johne Souza COELHO, Joaquim Martins da SILVA, Bruno Rafael Ribeiro ALMEIDA, Hipócrates Menezes CHALKIDIS, Adolfo BORGES, Edna Aoba Yassui ISHIKAWA, Cristovam Guerreiro DINIZ, Guilherme da Cruz SANTOS-NETO, Mauro André Damasceno de MELO

{"title":"Interpopulational genetic diversity in the medically important scorpion Tityus obscurus (Scorpiones: Buthidae) from northeastern Brazilian Amazonia","authors":"Pedro Pereira de Oliveira PARDAL, Johne Souza COELHO, Joaquim Martins da SILVA, Bruno Rafael Ribeiro ALMEIDA, Hipócrates Menezes CHALKIDIS, Adolfo BORGES, Edna Aoba Yassui ISHIKAWA, Cristovam Guerreiro DINIZ, Guilherme da Cruz SANTOS-NETO, Mauro André Damasceno de MELO","doi":"10.1590/1809-4392202202441","DOIUrl":"https://doi.org/10.1590/1809-4392202202441","url":null,"abstract":"ABSTRACT Scorpion envenoming is considered a public health problem in Brazil. A recent study described a variation in the clinical outcome of envenoming by Tityus obscurus in two populations separated by 850 km in the northeastern Amazon region. Our aim was to evaluate whether such clinical and toxinological variations are associated with underlying differences in genetic diversity between these two T. obscurus populations. We obtained DNA from five individuals of each population, in the municipalities of Belém and Santarém, located east and west of the state of Pará, Brazil, respectively. Gene regions encoding mitochondrial DNA (mtDNA) markers cytochrome oxidase subunit I (COI) and ribosomal 16S RNA (16S) were amplified and sequenced. Phylogenetic analyses were performed using maximum likelihood (ML) and Bayesian inferences (BA) for both molecular data (COI and 16S). The sampled T. obscurus populations corresponded to two distinct mtDNA lineages (genetic distance COI K2 P = 0.08 to 0.13; 16S K2 P = 0.10 to 0.11) with no shared mutations between groups and well supported by ML and BA inferences. Based on the divergence values found between eastern and western populations (COI, 0.07 to 0.12; 16S, 0.10), our study confirms the genetic heterogeneity of T. obscurus populations within the state of Pará, which correlates with observed venom and clinical differences, and reinforces the need for mapping the distribution of haplotypes throughout the geographic range of T. obscurus, to aid in future epidemiological, toxinological, and evolutionary studies.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135685987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microemulsion based on methyl 3,4,5-trihydroxybenzoate for the topical treatment of cutaneous leishmaniasis: an in vivo assay 基于3,4,5-三羟基苯甲酸甲酯的局部治疗皮肤利什曼病微乳:体内试验

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202300681

Thiago de Jesus BACHA, Bruno Bezerra JENSEN, Daniele de Carvalho RODRIGUES, Messe Elmer Torres da SILVA, Amanda Oliveira ARAÚJO, Katia Solange Cardoso Rodrigues dos Santos GERALDI, Robson Cabral VALADÃO, Francimeire Gomes PINHEIRO, Antonia Maria Ramos FRANCO

{"title":"Microemulsion based on methyl 3,4,5-trihydroxybenzoate for the topical treatment of cutaneous leishmaniasis: an in vivo assay","authors":"Thiago de Jesus BACHA, Bruno Bezerra JENSEN, Daniele de Carvalho RODRIGUES, Messe Elmer Torres da SILVA, Amanda Oliveira ARAÚJO, Katia Solange Cardoso Rodrigues dos Santos GERALDI, Robson Cabral VALADÃO, Francimeire Gomes PINHEIRO, Antonia Maria Ramos FRANCO","doi":"10.1590/1809-4392202300681","DOIUrl":"https://doi.org/10.1590/1809-4392202300681","url":null,"abstract":"ABSTRACT Cutaneous leishmaniasis, caused by protozoa of the genus Leishmania, presents diverse clinical manifestations, and current therapeutic options have limitations, including long treatment periods, potential hospitalization, and excessive pain during treatment. Methyl gallate, a phenolic compound found in plants such as Libidibia ferrea, presents promising antileishmanial activity. Combining this compound with existing leishmaniasis medications could lead to reduced dosages and the minimization of side effects. This study aimed to assess the efficacy of a microemulsion containing methyl gallate, either on its own or in combination with Glucantime®, for the experimental treatment of cutaneous leishmaniasis in a 30-day in vivo assay using golden hamsters infected with Leishmania (Leishmania) amazonensis. The control groups included an untreated positive control and an uninfected, untreated negative control. After treatment, we evaluated clinical, parasitological, and biochemical parameters. While none of the treatments achieved clinical or parasitological cure, notable improvements were observed in the combined group, with significant reductions in snout skin lesions and parasite load when compared to the control. Biochemical parameters such as creatinine, CK-MB, GOT, and GPT remained unchanged, but urea and CPK levels significantly increased in all the experimental groups relative to the control. In conclusion, the integration of a topical methyl gallate microemulsion with intralesional Glucantime® showed potential as an effective treatment for cutaneous leishmaniasis. Further investigations into optimal dosages and therapeutic schemes are warranted in order to enhance treatment outcomes.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135685985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Field assessment of a BCS measuring device at timed AI in crossbread dairy cows of Amazonian smallholders 亚马逊小农十字面包奶牛BCS定时人工智能测量装置的现场评估

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202202581

Luiz Francisco. M. PFEIFER, Ingrid Pedraça BARBOSA, Patrick PIONTE, Luiz Gustavo B. SIQUEIRA

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First record of a snake call in South America: the unusual sound of an ornate snail-eater Dipsas catesbyi 南美洲蛇叫声的第一个记录:一种华丽的吃蜗牛的Dipsas catesbyi不寻常的声音

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202300431

Igor Yuri FERNANDES, Esteban Diego KOCH, Alexander Tamanini MÔNICO

引用次数: 0

Physiological responses to long fasting followed by refeeding in juveniles of pirapitinga, Piaractus brachypomus 长时间禁食后再摄食的短腹鲳幼鱼的生理反应

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202203111

Lívia de Assis PORTO, Yhago Patricky Antunes Souza ASSIS, Matheus Philip Santos AMORIM, Ronald Kennedy LUZ, Gisele Cristina FAVERO

{"title":"Physiological responses to long fasting followed by refeeding in juveniles of pirapitinga, Piaractus brachypomus","authors":"Lívia de Assis PORTO, Yhago Patricky Antunes Souza ASSIS, Matheus Philip Santos AMORIM, Ronald Kennedy LUZ, Gisele Cristina FAVERO","doi":"10.1590/1809-4392202203111","DOIUrl":"https://doi.org/10.1590/1809-4392202203111","url":null,"abstract":"ABSTRACT For many fish species, prolonged fasting is part of their life cycle, as there are seasonal fluctuations in the quantity and quality of food available in their natural habitat. These animals use endogenous reserves during periods of food scarcity and recover when resources become available again. We evaluated the effect of a prolonged fasting period on indicators of body reserve use, growth performance and intestinal integrity of the Amazonian serrasalmid Piaractus brachypomus. We distributed 66 juveniles (68.6 ± 2.2 g) in 11 tanks. The treatment consisted of 30 days fasting followed by 45 days refeeding and the control of 75 days normal feeding with 5 replicates (one tank with six fish). The six individuals in the 11th tank were used for baseline measurements. Blood parameters, muscle lipid concentration, hepatosomatic and mesenteric fat indices, somatic growth parameters and intestinal villi morphology were measured every 15 days. Glucose, triglycerides, cholesterol, total protein, the mesenteric fat and hepatosomatic indices, weight gain, specific growth rate, condition factor and total biomass decreased significantly during fasting compared to the control, but all except body condition recovered during refeeding. The length and perimeter of the intestinal villi was significantly lower during fasting compared to the control. The feeding protocol allowed P. brachypomus to mobilize part of their body reserves during fasting, however, in general, refeeding was sufficient to restore their body needs and growth performance compatible with that of continuously fed animals.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135685991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of automotive diesel oil on germination of Avicennia germinans and Laguncularia racemosa mangrove propagules 车用柴油对红树生长藤和总状筋繁殖体萌发的影响

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202202342

Josélia Castro da Silva MARTINS, Flávia Rebelo MOCHEL, Ilisandra ZANANDREA, James Werllen de Jesus AZEVEDO, Leonardo Gonçalves de LIMA, Denilson da Silva BEZERRA, Emilly Gabrielle do Nascimento ABREU, Marcelle da Silva e SILVA, Aline Maria Silva LIMA

{"title":"Effects of automotive diesel oil on germination of Avicennia germinans and Laguncularia racemosa mangrove propagules","authors":"Josélia Castro da Silva MARTINS, Flávia Rebelo MOCHEL, Ilisandra ZANANDREA, James Werllen de Jesus AZEVEDO, Leonardo Gonçalves de LIMA, Denilson da Silva BEZERRA, Emilly Gabrielle do Nascimento ABREU, Marcelle da Silva e SILVA, Aline Maria Silva LIMA","doi":"10.1590/1809-4392202202342","DOIUrl":"https://doi.org/10.1590/1809-4392202202342","url":null,"abstract":"ABSTRACT Mangrove ecosystems are sensitive to oil, as spills can impair developmental processes of mangrove vegetation. Since the 2010s, the Brazilian equatorial margin, more specifically the Pará-Maranhão Basin and the mouth of the Amazonas River, has been affected by oil runoff from urban activities and the increased risk from exploratory deepwater drilling for oil extraction. Dispersal of mangrove propagules occurs during the tidal cycles, when the presence of tensors in the water can affect germination. We analyzed the effects of diesel oil on the germination of propagules of the two most common mangrove species in the region, Laguncularia racemosa and Avicennia germinans, in six treatments of diesel oil in the water (0.5%, 1%, 1.5%, 2%, 3% and 4%) and a diesel-free control. The response variables were germinability (G%), mean germination time, mean germination speed and the germination speed index (GSI). G% and GSI in L. racemosa propagules differed significantly between the control and all treatments (G% and GSI < 10% in the 3% treatment). Propagules of A. germinans were more resistant, and the physiological variables did not differ significantly among treatments and control (G% > 90% in all treatments). Our results indicate that, at the germination stage, L. racemosa was more susceptible than A. germinans to contamination by automotive diesel oil.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135738135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A new species of Rhynchospora section Pluriflorae (Cyperaceae) from the southwestern edge of the Brazilian Amazon 标题巴西亚马逊河流域西南缘多花科松孢子科一新种

4区环境科学与生态学

Acta Amazonica Pub Date : 2023-09-01 DOI: 10.1590/1809-4392202301040

Karina de Nazaré Lima ALVES, William Wayt THOMAS, Mathias Erich ENGELS, André dos Santos Bragança GIL

引用次数: 0