Acta Scientiarum. Biological Sciences最新文献_第7页

Coastal wetlands of the north of Peru: preservation progress 秘鲁北部沿海湿地:保护进展

Acta Scientiarum. Biological Sciences Pub Date : 2022-10-28 DOI: 10.4025/actascibiolsci.v44i1.62571

R. Seminario-Córdova, I. B. Barreto, Zenayda Emilia Estrada Tuesta

{"title":"Coastal wetlands of the north of Peru: preservation progress","authors":"R. Seminario-Córdova, I. B. Barreto, Zenayda Emilia Estrada Tuesta","doi":"10.4025/actascibiolsci.v44i1.62571","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v44i1.62571","url":null,"abstract":"Wetlands provide several ecological, biological, and environmental benefits, including their role in the hydrological cycle, especially in coastal areas. Coastal wetlands are affected by anthropogenic threats, as these are in constant synergy with local populations and agricultural expansion, which is one of the main factors causing their depletion. In addition, the ravages of climate change accentuate their vulnerability, which may lead to their irreparable loss. In this regard, the objective of this work was to identify the coastal wetlands of northern Peru and in order to verify the progress made in their conservation. For this purpose, a search was performed in wetlands atlas and similar studies, and a check was made to see if those wetlands had records of flora and fauna studies. Finally, information was sought on protection measures in the area. Consequently, 22 coastal wetlands were registered, and among them, three are internationally recognized as Ramsar sites: Mangroves of Tumbes, Mangrove of San Pedro de Vice, and the Virrilá Estuary, where commendable conservation efforts are underway. However, it was found that more than 77% of the coastal wetlands in northern Peru do not have preservation actions or scientific evidence describing their biodiversity.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84062452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Egg transport and larval behavior of curimba, Prochilodus lineatus (Valenciennes, 1836; Characiformes, Prochilodontidae) in a drift simulator channel curimba, Prochilodus lineatus (valcienne, 1836)的卵运输和幼虫行为;特征，原齿牙科)在漂移模拟器信道

Acta Scientiarum. Biological Sciences Pub Date : 2022-10-28 DOI: 10.4025/actascibiolsci.v44i1.62680

T. B. D. Queiroz, Dirceu Baumgartner, P. A. Piana, P. Sanches

{"title":"Egg transport and larval behavior of curimba, Prochilodus lineatus (Valenciennes, 1836; Characiformes, Prochilodontidae) in a drift simulator channel","authors":"T. B. D. Queiroz, Dirceu Baumgartner, P. A. Piana, P. Sanches","doi":"10.4025/actascibiolsci.v44i1.62680","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v44i1.62680","url":null,"abstract":"Landscape changes and hydrologic alterations associated with dam construction have greatly hindered reproductive success and the recruitment of migratory species. However, little is known about the flow conditions that are necessary for the reproductive success of migrators. We aimed to analyze one of the important migrants of the Paraná River, the curimba, Prochilodus lineatus (Valenciennes, 1836), to determine the minimum velocities necessary for egg drift and analyze the behavior of larvae at different flow velocities. Thus, we experimentally evaluated the behavior of eggs and larvae released in a drift simulator channel (DSC) under four flow velocities. Additionally, we investigate the swimming ability of larvae in relation to certaintheirarvaeng ability in relation to asures of larval body to their ability ased in a Drift Simulator Channel certaincerrain morphometric measures of their bodies. We also performed morphometry and calculations of larval body and fin proportions to determine which structures influence swimming ability. The results indicated that environments with flow velocities greater than 0.081 m s-1 were favorable for egg drift and increased the chances of successful transport of eggs to downstream areas. We also observed that soon after hatching, the larvae positioned themselves against the flow, indicating that they had a perception of position and orientation. The larvae were able to maintain and disperse against the flow within the channel 32h after hatching at all velocities, which was mainly due to the development of pectoral and caudal fins that were actively involved in the swimming process, as well as the reduction in the dimensions of the yolk sac, which reduced drag.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75413673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ErpY-like protein, a promising antigen to leptospirosis control: characterization of antigenic and immunogenic potential erpy样蛋白，一种有希望的钩端螺旋体病控制抗原:抗原和免疫原潜力的表征

Acta Scientiarum. Biological Sciences Pub Date : 2022-08-22 DOI: 10.4025/actascibiolsci.v44i1.61160

Bárbara Couto Roloff Padilha, Henrique Queiroz Simão, T. Collares, Stella Buchhorn de Freitas, T. Oliveira, R. Schuch, R. Woloski, D. Hartwig

引用次数: 0

A preliminary study on nickel tolerance of some barley genotypes 大麦部分基因型耐镍性的初步研究

Acta Scientiarum. Biological Sciences Pub Date : 2022-08-22 DOI: 10.4025/actascibiolsci.v44i1.60663

Ali Doǧru, H. Altundağ, M. S. Dündar, E. S. Darçın

{"title":"A preliminary study on nickel tolerance of some barley genotypes","authors":"Ali Doǧru, H. Altundağ, M. S. Dündar, E. S. Darçın","doi":"10.4025/actascibiolsci.v44i1.60663","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v44i1.60663","url":null,"abstract":"In this study, nickel tolerance (NiSO4.7H2O) of some Turkish national barley (Hordeum vulgare L.) genotypes (Bülbül-89, Kalaycı-97, Karatay-94, Larende, Tarm-92, Tokak-157/37, Yesevi-93 and Zeynel Ağa) was investigated. Barley genotypes were exposed to different nickel concentrations [0 mM (control), 250, 500, 1000, 1500, and 2000 ppm]. Nickel toxicity significantly inhibited root and coleoptile growth in all barley genotypes in a concentration-dependent manner. However, root growth was much more inhibited by nickel applications in comparison with coleoptile growth, probably due to a higher level of sensitivity of root meristems against nickel toxicity or direct contact of roots with nickel ions in the growth medium. Root growth in the genotype Karatay-94 and coleoptile growth in the genotype Yesevi-93 was more remarkably reduced by nickel toxicity. Root and coleoptile growth in the genotypes Larende and Kalaycı-97 were less affected under nickel toxicity, respectively. In addition, nickel toxicity disturbed water relations in barley genotypes dependent on the organ type, as demonstrated by more severe inhibition in root fresh weight as compared to coleoptile fresh weight. These results could show that nickel toxicity reduced water uptake from growth medium in barley genotypes used in this study. Changes in dry weight of roots and coleoptiles indicated that nickel toxicity more severely decreased biomass accumulation in roots of barley genotypes. The calculated tolerance indices demonstrated that the genotype Kalaycı-97 is the most tolerant to nickel toxicity, while the genotype Karatay-94 is the most susceptible one.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74915997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vascular flora of Southern Brazilian outcrops associated with Atlantic Forest: small relict environment that needs to be preserved 与大西洋森林相关的巴西南部露头维管植物群:需要保护的小型遗存环境

Acta Scientiarum. Biological Sciences Pub Date : 2022-07-28 DOI: 10.4025/actascibiolsci.v44i1.62064

Tatiane Monteiro-Ré, G. A. Dettke, Ana Raquel da Silva, M. Parolin, M. G. Caxambu

{"title":"Vascular flora of Southern Brazilian outcrops associated with Atlantic Forest: small relict environment that needs to be preserved","authors":"Tatiane Monteiro-Ré, G. A. Dettke, Ana Raquel da Silva, M. Parolin, M. G. Caxambu","doi":"10.4025/actascibiolsci.v44i1.62064","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v44i1.62064","url":null,"abstract":"The rocky outcrops in the municipality of Campo Mourão (Paraná State) are all surrounded by remaining Atlantic Forest, unlike the typical outcrops associated with river courses, fields, or hilltops. Because it is such specific vegetation, it is essential to record the floristic composition, verifying only species and the conservation status of local populations. This study cataloged the species of vascular plants occurring in four rocky outcrops areas of Campo Mourão: Nishida outcrop (1,808 ha); Bica do Rio do Campo outcrop (0.458 ha); Perdoncini outcrop (0.228 ha), and Lago Azul State Park outcrop (0.021 ha). A total of 203 collections were analyzed, representing 152 species (eight exotic to Brazil), distributed in 66 families and 135 genera. The more richness families were Poaceae, Asteraceae, Fabaceae, Rubiaceae, and Bromeliaceae. The predominant life form was herbs and shrubs, and most species are terrestrial and rupicolous. The rocky outcrops of Campo Mourão, despite the small total area (25,150 m2), have 10 % of the exclusive species in the municipality. Also, 14 species are endemic in Brazil, and two are endemic in Paraná, being Portulaca hatschbachii (Portulacaceae) officially threatened to extinction in Brazil. In these areas, several species found have been little collected in Paraná State and Brazil, in addition to the presence of life forms adapted to survival on the exposed rock. This demonstrates that despite being small, these sites are critical environments for preserving biodiversity in the region.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90726227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Cichlidae fish Geophagus brasiliensis (Quoy & Gaimard, 1824) has suitability as a sentinel species for changes caused by xenobiotics? 石鲤科的巴西地鼠(Geophagus brasiliensis, Quoy & Gaimard, 1824)适合作为外来生物引起的变化的哨兵物种。

Acta Scientiarum. Biological Sciences Pub Date : 2022-07-28 DOI: 10.4025/actascibiolsci.v44i1.59921

Claudio Nona Morado, M. F. Andrade-Tubino, B. Pinto, F. G. Araújo

{"title":"The Cichlidae fish Geophagus brasiliensis (Quoy & Gaimard, 1824) has suitability as a sentinel species for changes caused by xenobiotics?","authors":"Claudio Nona Morado, M. F. Andrade-Tubino, B. Pinto, F. G. Araújo","doi":"10.4025/actascibiolsci.v44i1.59921","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v44i1.59921","url":null,"abstract":"Industrial wastewater and agricultural practices are among the main activities discharging organic pollutants, such as Polychlorinated biphenyl (PCB) congeners and organochlorine insecticides (e.g. DDT - dichloro diphenyl trichloroethane), to the environment. In this study, we used the native Cichlidae fish species Geophagus brasiliensis as a sentinel to evaluate the hepatic 7-ethoxyresorufin-O-deethylase EROD activity, a biomarker of exposure to CYP1A-inducing pollutants, to assess the bioavailability of xenobiotics in two reaches of a large lotic system in Southeast Brazil: a less disturbed area (site 1) in the upper stretch, and an area in the middle stretch, which receives various industrial and agricultural effluents from upstream cities (site 2). In addition, G. brasiliensis were exposed to a single dose of 50 mg kg-1 beta-naphthoflavone (BNF) or of 50 mg kg-1 dimethylbenzoanthracene (DMBA) to test the effects on, respectively, the hepatic EROD activity in S9 supernatant fraction, and the frequency of micronucleated erythrocytes three days after the i.p. treatments, and compared to an unexposed group, to test its potential as a sentinel for biomonitoring studies. The EROD activity was approximately two-fold higher in fish from the impacted stretches than in fish from the less disturbed stretches (p < 0.05). Micronuclei (MN) frequency was also significantly different (p < 0.01) in DMBA-treated fish. The induced EROD activity in the impacted site suggests that organochlorinated pollutants are reaching the biota of the Paraíba do Sul River, confirming the suitability of Geophagus brasiliensis as a useful sentinel species to detect changes caused by xenobiotics","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91307809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of ichthyofauna in lotic and lentic environments in the Araguaia River basin, Cerrado Biome, Brazil 巴西塞拉多生物群系阿拉瓜亚河流域地理和生态环境鱼系评价

Acta Scientiarum. Biological Sciences Pub Date : 2022-07-28 DOI: 10.4025/actascibiolsci.v44i1.61005

Bernardo Ramos Simões Corrêa, Murilo Luiz e Castro Santana, Lilian de Castro Moraes Pinto, Fernanda Nunes de Araujo Fonseca, Carlos Alberto da Cruz Junior, R. D. Navarro

{"title":"Evaluation of ichthyofauna in lotic and lentic environments in the Araguaia River basin, Cerrado Biome, Brazil","authors":"Bernardo Ramos Simões Corrêa, Murilo Luiz e Castro Santana, Lilian de Castro Moraes Pinto, Fernanda Nunes de Araujo Fonseca, Carlos Alberto da Cruz Junior, R. D. Navarro","doi":"10.4025/actascibiolsci.v44i1.61005","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v44i1.61005","url":null,"abstract":"The Araguaia River is an important watercourse located in Central Brazil and well known for its diversity of fish fauna. Differences between landscape and resources in the distinct environments existing in a floodplain can determine the success of a species. This study presents a list of ichthyofauna species found in lentic and lotic environments in the floodplain of the Araguaia River basin, bordering Mato Grosso and Goiás States. We carried out sampling in July 2019, during the dry season, using diverse fish collection strategies, such as waiting nets, trawl, cast net and fishing rods. Were distributed 12 sampling points between lentic and lotic environments and we captured a total of 168 individuals of 42 species, 19 families and six orders. The predominant orders were Characiformes, Siluriformes and Cichliformes, while the families were Serrasalmidae, Characidae, Triportheidae, Curimatidae and Anostomidae. The genera Triportheus, Psectrogaster and Moenkhausia were the most abundant, while Pimelodus was the most dispersed. Results showed greater abundance and diversity in the lentic environment than in the lotic one, with top-of-the-chain species in both. The variance between environments and the presence of species that are endemic, recently described, of undefined taxonomic status, and bioindicators, highlight the importance of conserving and further studying the ichthyofauna in the Araguaia River basin.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74227446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diversity of Collembola and occurrence of Talitroides sylvaticus in a Pinus elliottii Engelm afforestation 湿地松人工林弹线虫的多样性及木林线虫的发生

Acta Scientiarum. Biological Sciences Pub Date : 2022-07-28 DOI: 10.4025/actascibiolsci.v44i1.60908

Igor Sulzbacher Schardong, Joice Aline Freiberg, Marcelo Aloísio Sulzbacher, N. Santana, N. N. Godeiro, Andreas Kohler, Z. Antoniolli, R. Jacques

{"title":"Diversity of Collembola and occurrence of Talitroides sylvaticus in a Pinus elliottii Engelm afforestation","authors":"Igor Sulzbacher Schardong, Joice Aline Freiberg, Marcelo Aloísio Sulzbacher, N. Santana, N. N. Godeiro, Andreas Kohler, Z. Antoniolli, R. Jacques","doi":"10.4025/actascibiolsci.v44i1.60908","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v44i1.60908","url":null,"abstract":"A 52-year-old pine forest is characterized as an environment with low plant diversity and large accumulation of allelopathic litter with poor nutrient content. Collembola is sensitive to environmental conditions and may have difficulties living in these forests. This study aimed (1) to evaluate the abundance and richness of Collembola in the soil of a 52-year-old pine afforestation with different moisture contents; and (2) to identify the landhopper sampled unintentionally. For sampling, pitfall traps were set up for four days, in areas of a Pinus elliottii afforestation with high and low soil moisture located at the Universidade Federal de Santa Maria. Collembola specimens were counted and identified to family and genus level. The total abundance of springtails was greater in the low soil moisture area. The genera Desoria and Lepidocyrtus, and specimens of the family Onychiuridae were more abundant in low soil moisture, meanwhile, the genus Ceratophysella was more abundant in the high soil moisture. The landhopper Talitroides sylvaticus was sampled unintentionally by traps set up in the soil with higher moisture and calcium content. Six genera of Collembola and the landhopper T. sylvaticus were identified in soil of a P. elliottii afforestation and their distribution is influenced by soil moisture.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"304 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88330527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Length-weight relationship of four species of ornamental fish from the lower Rio Negro basin in the Brazilian Amazon 巴西亚马逊河内格罗河下游四种观赏鱼的长度-重量关系

Acta Scientiarum. Biological Sciences Pub Date : 2022-07-28 DOI: 10.4025/actascibiolsci.v44i1.60599

D. Olentino, C. Lubich, Markus Leal, Kedma C. Yamamoto

引用次数: 0

Use of microstructural characteristics of pollen and pistil to identify olive cultivars in Southern Brazil 利用花粉和雌蕊的显微结构特征鉴定巴西南部橄榄品种

Acta Scientiarum. Biological Sciences Pub Date : 2022-07-28 DOI: 10.4025/actascibiolsci.v44i1.62297

A. Chacón-Ortiz, C. Busanello, A. Oliveira, L. C. Maia, J. A. Fernando, C. Pegoraro

{"title":"Use of microstructural characteristics of pollen and pistil to identify olive cultivars in Southern Brazil","authors":"A. Chacón-Ortiz, C. Busanello, A. Oliveira, L. C. Maia, J. A. Fernando, C. Pegoraro","doi":"10.4025/actascibiolsci.v44i1.62297","DOIUrl":"https://doi.org/10.4025/actascibiolsci.v44i1.62297","url":null,"abstract":"The olive crop has a large diversity in cultivars around the world, whose identification have been based on leaf, stem or fruit traits. However, these traits may be influenced by the environment, which has led to the misidentification of cultivars. The variability of the pistil and pollen structure under electron scanning and light microscopy were studied using the cultivars 'Arbequina', 'Arbosana', 'Frantoio', 'Koroneiki', 'Manzanilla de Sevilla' and 'Picual', cultivated in Southern Brazil. The aim was to find unique patterns for their identification. This type of study has not been carried out in the conditions of Southern Brazil, where the identification of commercial cultivars sometimes is complex and confusing. There were significant differences in the variables, showing uniformity within each cultivar in different locations. The principal component analysis indicated a separation of cultivars according to similarities or micromorphological differences in the pollen wall, area of the lumen and the structural elements of the tectum. For the analysis of the pistil, the separation was even clearer, each cultivar individually forming a cluster, using as characters the length of the style in contrast to the length, width and area of the stigma. This evidenced little variation among individuals within the same cultivar. The information provided can contribute to the individual identification of very close olive tree cultivars in the conditions of Southern Brazil.","PeriodicalId":7166,"journal":{"name":"Acta Scientiarum. Biological Sciences","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87690577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0