Pub Date : 2021-06-01DOI: 10.5007/2175-7925.2021.E79666
Patricia Frizon, S. Brammer, C. C. Deuner, A. Chechi, M. I. Lima, P. Scheeren
The objective of this study was to evaluate genetic stability by determining the meiotic index (MI) and pollen viability in F1RC2 segregating populations, obtained by the crosses between wheat commercial cultivars and synthetic wheat, aimed at introgression/genetic resistance. For MI, three ears were collected per genotype, before anthesis, and they were fixed in Carnoy’s solution. The cytological slides were prepared by crushing the anthers and staining with 1% acetocarmine, and the normal tetrads and the ones with micronuclei were observed under a light microscope. For pollen viability, the ears were collected at the stage of mature pollen grain. The methodological procedure was similar to that of the tetrads, evaluating the pollen grains as viable, with little starch, with two pores, different sizes and non-viable. The pollen grain size was measured by the Axion Vision software. All the segregating populations with MI above 90% and high pollen viability (above 85%) reflected a stable meiotic behavior. About the variation in size, the CIGM90.909/BRS 179 cross showed pollen grains with 58.43 μm and CIGM93.298/BRS Guamirim, 47.15 μm. According to the results, wheat segregating populations were considered meiotically stable and suitable for use in wheat breeding programs and for incorporation of new important genes.
{"title":"Genetic stability in interspecific hybridizations of wheat populations determined by meiotic index and pollen viability","authors":"Patricia Frizon, S. Brammer, C. C. Deuner, A. Chechi, M. I. Lima, P. Scheeren","doi":"10.5007/2175-7925.2021.E79666","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E79666","url":null,"abstract":"The objective of this study was to evaluate genetic stability by determining the meiotic index (MI) and pollen viability in F1RC2 segregating populations, obtained by the crosses between wheat commercial cultivars and synthetic wheat, aimed at introgression/genetic resistance. For MI, three ears were collected per genotype, before anthesis, and they were fixed in Carnoy’s solution. The cytological slides were prepared by crushing the anthers and staining with 1% acetocarmine, and the normal tetrads and the ones with micronuclei were observed under a light microscope. For pollen viability, the ears were collected at the stage of mature pollen grain. The methodological procedure was similar to that of the tetrads, evaluating the pollen grains as viable, with little starch, with two pores, different sizes and non-viable. The pollen grain size was measured by the Axion Vision software. All the segregating populations with MI above 90% and high pollen viability (above 85%) reflected a stable meiotic behavior. About the variation in size, the CIGM90.909/BRS 179 cross showed pollen grains with 58.43 μm and CIGM93.298/BRS Guamirim, 47.15 μm. According to the results, wheat segregating populations were considered meiotically stable and suitable for use in wheat breeding programs and for incorporation of new important genes.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43656031","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}
Pub Date : 2021-06-01DOI: 10.5007/2175-7925.2021.E76255
M. E. A. Vilela, Francisco de Paula Severo Neto, Fernando R. Carvalho, Otávio Froehlich
The Serra da Bodoquena includes the headwaters of important rivers of the upper Paraguay River basin and constitutes one of the more extensive karst formations in Brazil. The region is an important tourist destination and Serra da Bodoquena National Park (SBNP) was established in 2000. In this work, we provide a list of the ichthyofauna and describe the main water systems in SBNP. Surveys were carried out in August, September and December 2005 using trawl nets, gill nets and electrofishing. For the list of species, we included records made in subsequent studies, resulting in 60 species belonging to seven orders and 21 families, which are all autochthonous to the upper Paraguay River, except the tilapia Coptodon rendalli, the only non-native species. The species richness was higher in the Salobra River basin (49 species, 39 exclusive) compared to the Perdido River basin (15 species, six exclusive). We documented seven endemic species in the Serra da Bodoquena, of which two are threatened with extinction (Vulnerable category): Trichomycterus dali and Ancistrus formoso. As mitigation and preventive measures for environmental impacts, we suggest regularizing land use and increasing environmental education programs as ways of contributing to public policies that are involved in the conservation of aquatic systems and their biotic communities.
博多奎纳山脉包括巴拉圭河上游流域重要河流的源头，是巴西境内最广泛的喀斯特地貌之一。该地区是一个重要的旅游目的地，Serra da Bodoquena国家公园(SBNP)成立于2000年。在这项工作中，我们提供了一份鱼类区系的清单，并描述了SBNP的主要水系统。调查于2005年8月、9月和12月使用拖网、刺网和电钓进行。在物种列表中，我们纳入了随后的研究记录，得到了60种，隶属于7目21科，除Coptodon rendalli罗非鱼(Coptodon rendalli)是唯一的非本地物种外，所有物种都是巴拉圭河上游的土生物种。物种丰富度在萨洛布拉河流域(49种，39种专有)高于Perdido河流域(15种，6种专有)。本文记录了Bodoquena山的7种特有物种，其中2种濒临灭绝(易危类别):大理Trichomycterus dali和Ancistrus formoso。作为环境影响的缓解和预防措施，我们建议规范土地使用和增加环境教育计划，作为参与保护水生系统及其生物群落的公共政策的方式。
{"title":"Ictiofauna do Parque Nacional da Serra da Bodoquena, Mato Grosso do Sul, Brasil: composição e subsídios à conservação","authors":"M. E. A. Vilela, Francisco de Paula Severo Neto, Fernando R. Carvalho, Otávio Froehlich","doi":"10.5007/2175-7925.2021.E76255","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E76255","url":null,"abstract":"The Serra da Bodoquena includes the headwaters of important rivers of the upper Paraguay River basin and constitutes one of the more extensive karst formations in Brazil. The region is an important tourist destination and Serra da Bodoquena National Park (SBNP) was established in 2000. In this work, we provide a list of the ichthyofauna and describe the main water systems in SBNP. Surveys were carried out in August, September and December 2005 using trawl nets, gill nets and electrofishing. For the list of species, we included records made in subsequent studies, resulting in 60 species belonging to seven orders and 21 families, which are all autochthonous to the upper Paraguay River, except the tilapia Coptodon rendalli, the only non-native species. The species richness was higher in the Salobra River basin (49 species, 39 exclusive) compared to the Perdido River basin (15 species, six exclusive). We documented seven endemic species in the Serra da Bodoquena, of which two are threatened with extinction (Vulnerable category): Trichomycterus dali and Ancistrus formoso. As mitigation and preventive measures for environmental impacts, we suggest regularizing land use and increasing environmental education programs as ways of contributing to public policies that are involved in the conservation of aquatic systems and their biotic communities.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"34 1","pages":"1-23"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43204557","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}
Pub Date : 2021-03-04DOI: 10.5007/2175-7925.2021.E77751
J. Maciel, Yuri de Souza Vieira Couceiro
Local extinction of native Atlantic Forest flora species occurs mainly due to habitat fragmentation. Reforestation and natural regeneration can mitigate these factors. The present study attempts to understand whether floristic composition and dispersal processes are being reestablished in an area of lowland Atlantic Forest, eight years after its reforestation. The study area was an old pasture set between two urban fragments in the city of Recife that was reforested in 2011. Melastomataceae species were collected in this area and the morphology of their fruits was compared with the species of the family recorded in the adjacent fragments. Miconia prasina, M. albicans, M. affinis, Clidemia hirta, and C. capitellata have been found in the reforested area. Although there are species with larger fruits in the adjacent fragments, there was no statistically significant difference between the means of the two areas. The fruit morphology indicates that the species found in the area are dispersed by birds and small mammals. It is possible to conclude that the reforested area already presents the expected ecological processes for a corridor between two fragments. Thus, the two adjacent areas serve as vectors for the colonization of native Atlantic Forest species in the reforested area.
{"title":"Floristic composition of Melastomataceae between reforested and natural areas in the Recife Atlantic Forest, Pernambuco, Brazil","authors":"J. Maciel, Yuri de Souza Vieira Couceiro","doi":"10.5007/2175-7925.2021.E77751","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E77751","url":null,"abstract":"Local extinction of native Atlantic Forest flora species occurs mainly due to habitat fragmentation. Reforestation and natural regeneration can mitigate these factors. The present study attempts to understand whether floristic composition and dispersal processes are being reestablished in an area of lowland Atlantic Forest, eight years after its reforestation. The study area was an old pasture set between two urban fragments in the city of Recife that was reforested in 2011. Melastomataceae species were collected in this area and the morphology of their fruits was compared with the species of the family recorded in the adjacent fragments. Miconia prasina, M. albicans, M. affinis, Clidemia hirta, and C. capitellata have been found in the reforested area. Although there are species with larger fruits in the adjacent fragments, there was no statistically significant difference between the means of the two areas. The fruit morphology indicates that the species found in the area are dispersed by birds and small mammals. It is possible to conclude that the reforested area already presents the expected ecological processes for a corridor between two fragments. Thus, the two adjacent areas serve as vectors for the colonization of native Atlantic Forest species in the reforested area.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46609147","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}
Pub Date : 2021-03-04DOI: 10.5007/2175-7925.2021.E77440
Eloísa Alves Nogueira, Tarcisio Michael Ferreira Soares De Oliveira, Ingrid Cristina Santos Amorim, Tássio Britto De Oliveira, D. L. Nelson, Vivian Machado Benassi
Xylanases are enzymes widely used in industrial processes, such as paper bleaching, the bakery industry, juice and beer clarification, malting, and the production of biofuels, due to the benefits and advantages of the biological catalyst. In this context, we aimed to bioprospecting filamentous fungi, select a potential xylanase-producing fungus, optimize the enzymatic production, and perform the biochemical characterization of the enzyme. Eleven filamentous fungi with distinct morphology were isolated from three samples of organic materials collected in the soil of the city of Diamantina, Minas Gerais, Brazil, and Fusarium sp. EA 1.3.7 was selected as a potential xylanase-producer. The best growth conditions for the production of xylanase were standardized in a submerged CP medium, for six days, at 30oC, using peptone as a nitrogen source, and wheat bran as a carbon source; the xylanases produced showed greater activities at 52oC and pH 5.3.
{"title":"Otimização das condições de cultivo do fungo filamentoso Fusarium sp. EA 1.3.7 para a produção de xilanases","authors":"Eloísa Alves Nogueira, Tarcisio Michael Ferreira Soares De Oliveira, Ingrid Cristina Santos Amorim, Tássio Britto De Oliveira, D. L. Nelson, Vivian Machado Benassi","doi":"10.5007/2175-7925.2021.E77440","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E77440","url":null,"abstract":"Xylanases are enzymes widely used in industrial processes, such as paper bleaching, the bakery industry, juice and beer clarification, malting, and the production of biofuels, due to the benefits and advantages of the biological catalyst. In this context, we aimed to bioprospecting filamentous fungi, select a potential xylanase-producing fungus, optimize the enzymatic production, and perform the biochemical characterization of the enzyme. Eleven filamentous fungi with distinct morphology were isolated from three samples of organic materials collected in the soil of the city of Diamantina, Minas Gerais, Brazil, and Fusarium sp. EA 1.3.7 was selected as a potential xylanase-producer. The best growth conditions for the production of xylanase were standardized in a submerged CP medium, for six days, at 30oC, using peptone as a nitrogen source, and wheat bran as a carbon source; the xylanases produced showed greater activities at 52oC and pH 5.3.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41415360","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}
Pub Date : 2021-03-04DOI: 10.5007/2175-7925.2021.E77320
Marta Júlia Faro, V. S. Moura, R. Augusto, M. Vasconcellos
The objective of this work is to evaluate the action of original Roundup® on the snail Biomphalaria glabrata infected and not infected by Schistosoma mansoni by observing its mortality and reproductive biology. Snails were submitted for 30 days to aqueous solutions of original Roundup at concentrations of 0.1, 0.09, 0.08, 0.07, 0.06, 0.05, 0.04, 0.03, 0.02, 0.018, 0.016, 0.014, 0.012 and 0.01 (%) to determine LC50. To analyze the reproductive activity of B. glabrata, against the pesticide, four B. glabrata groups were formed: infected and exposed to the pesticide; infected and not exposed (control); not infected and exposed; and not infected and not exposed(control). LC50 (0.012% aqueous solution of original Roundup) caused mortality of at most up to 95% for 24, 48 and 72 h during the experimental period (30 days), and lost effect totally after 27 days. The reproductive activity of the non-infected and exposed snails was 30.3 ± 20.5 eggs in 2.7 ± 1.2 egg masses, and there was a reduction of 51% in the average number of hatched snails (11.5 ± 7.5) in comparison to the control group (23.9 ± 18.0) for four weeks (p = 0.003). The results indicate that the lethal concentration (LC50) of the 0.012% aqueous solution of original Roundup has a significant action on Biomphalaria glabrata for up to 27 days. Roundup significantly diminished the fertility of infected and exposed snails in comparison with the control group.
{"title":"Evaluation of original Roundup® effects on Biomphalaria glabrata (Say, 1818)","authors":"Marta Júlia Faro, V. S. Moura, R. Augusto, M. Vasconcellos","doi":"10.5007/2175-7925.2021.E77320","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E77320","url":null,"abstract":"The objective of this work is to evaluate the action of original Roundup® on the snail Biomphalaria \u0000glabrata infected and not infected by Schistosoma mansoni by observing its mortality and reproductive biology. \u0000Snails were submitted for 30 days to aqueous solutions of original Roundup at concentrations of 0.1, 0.09, \u00000.08, 0.07, 0.06, 0.05, 0.04, 0.03, 0.02, 0.018, 0.016, 0.014, 0.012 and 0.01 (%) to determine LC50. To analyze the reproductive activity of B. glabrata, against the pesticide, four B. glabrata groups were formed: infected \u0000and exposed to the pesticide; infected and not exposed (control); not infected and exposed; and not infected \u0000and not exposed(control). LC50 (0.012% aqueous solution of original Roundup) caused mortality of at most up \u0000to 95% for 24, 48 and 72 h during the experimental period (30 days), and lost effect totally after 27 days. The \u0000reproductive activity of the non-infected and exposed snails was 30.3 ± 20.5 eggs in 2.7 ± 1.2 egg masses, and \u0000there was a reduction of 51% in the average number of hatched snails (11.5 ± 7.5) in comparison to the control \u0000group (23.9 ± 18.0) for four weeks (p = 0.003). The results indicate that the lethal concentration (LC50) of \u0000the 0.012% aqueous solution of original Roundup has a significant action on Biomphalaria glabrata for up to \u000027 days. Roundup significantly diminished the fertility of infected and exposed snails in comparison with the \u0000control group.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43700559","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}
Pub Date : 2021-03-04DOI: 10.5007/2175-7925.2021.E76552
L. H. Santos, Cibelle Santos Dias, Jardyelle Carvalho Lima, Messulan Rodrigues Meira, C. B. M. Cerqueira-Silva
The objective of the present research was to compare the efficiency among seven protocols adapted for the extraction of genomic DNA from the species Prosopis juliflora (Sw.) DC. The protocols used were based on their buffers: SDS 10%, CTAB 5%, Sorbitol, CTAB 3% and Sorbitol, SDS 0.7% and NaCl, CTAB 2%, CTAB 2% and NaCl 1.4M. In all tests, the use of β-mercaptoethanol, liquid nitrogen, proteinase K and RNAses was eliminated. The samples consisted of leaf primordia in each specimen in triplicate. The quantity and quality of the extracted DNA were evaluated by electrophoresis in 1% agarose gel and by reading the absorbances in a spectrophotometer. For amplification reactions, the ISSR primer was used. Among the tested extraction buffers, SDS 10%, CTAB 5% and CTAB 3%, and Sorbitol were the most efficient for P. juliflora. Of these three protocols, CTAB 3% and Sorbitol showed a better level of purity despite the lower amount of DNA (123 ng/µL) compared to 10% SDS and 5% CTAB buffers (312 and 321 ng/µL, respectively, and high content of contaminants). We conclude that it is possible to use extraction protocols without additives that are harmful to human health and at a lower cost in the extraction process.
{"title":"Análise comparativa de protocolos para extração de DNA genômico em Prosopis juliflora (Sw.) DC","authors":"L. H. Santos, Cibelle Santos Dias, Jardyelle Carvalho Lima, Messulan Rodrigues Meira, C. B. M. Cerqueira-Silva","doi":"10.5007/2175-7925.2021.E76552","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E76552","url":null,"abstract":"The objective of the present research was to compare the efficiency among seven protocols adapted for the extraction of genomic DNA from the species Prosopis juliflora (Sw.) DC. The protocols used were based on their buffers: SDS 10%, CTAB 5%, Sorbitol, CTAB 3% and Sorbitol, SDS 0.7% and NaCl, CTAB 2%, CTAB 2% and NaCl 1.4M. In all tests, the use of β-mercaptoethanol, liquid nitrogen, proteinase K and RNAses was eliminated. The samples consisted of leaf primordia in each specimen in triplicate. The quantity and quality of the extracted DNA were evaluated by electrophoresis in 1% agarose gel and by reading the absorbances in a spectrophotometer. For amplification reactions, the ISSR primer was used. Among the tested extraction buffers, SDS 10%, CTAB 5% and CTAB 3%, and Sorbitol were the most efficient for P. juliflora. Of these three protocols, CTAB 3% and Sorbitol showed a better level of purity despite the lower amount of DNA (123 ng/µL) compared to 10% SDS and 5% CTAB buffers (312 and 321 ng/µL, respectively, and high content of contaminants). We conclude that it is possible to use extraction protocols without additives that are harmful to human health and at a lower cost in the extraction process.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44240115","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}
Pub Date : 2021-03-04DOI: 10.5007/2175-7925.2021.E77545
Severino Adriano de Oliveira Lima, H. A. Andrade, Marcondes Agostinho Gonzaga Junior, Donovan Filipe Henrique Pinto
The aim of the present research was to study the diversity of the ichthyofauna captured with the most commonly used gillnet in the state of Pernambuco. In total, 14 collections were made in the Santa Cruz Canal (CSC) between July 2013 and June 2014. The samples were collected using a 30 mm mesh gillnet. The captured fish were removed and separated in margin and center positions, as well as in the net’s vertical position (upper, middle, and lower). Concerning frequency of occurrence, the species were classified as common, accessory, or occasional. Alpha and beta diversity analyses were performed. In total, 19 species were captured, with Opisthonema oglinum and Anchovia clupeoides being the only constants. The estimated alpha diversities did not show significant differences in the temporal and spatial strata. In the beta diversity, two groups were distinguished, with the largest generally occurring in large abundances of O. oglinum. The evaluated net was efficient for the target specie O. oglinum, while the catches of other species corresponded to less than 13% of the icitiofauna already found in the CSC. Therefore, management measures that aim to restrict the use of fishing gear for the protection of diversity considering the seasonality and spatiality in the channel is not recommended.
{"title":"Diversidade das pescarias realizadas com rede de emalhar em um estuário tropical do nordeste do Brasil","authors":"Severino Adriano de Oliveira Lima, H. A. Andrade, Marcondes Agostinho Gonzaga Junior, Donovan Filipe Henrique Pinto","doi":"10.5007/2175-7925.2021.E77545","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E77545","url":null,"abstract":"The aim of the present research was to study the diversity of the ichthyofauna captured with the most commonly used gillnet in the state of Pernambuco. In total, 14 collections were made in the Santa Cruz Canal (CSC) between July 2013 and June 2014. The samples were collected using a 30 mm mesh gillnet. The captured fish were removed and separated in margin and center positions, as well as in the net’s vertical position (upper, middle, and lower). Concerning frequency of occurrence, the species were classified as common, accessory, or occasional. Alpha and beta diversity analyses were performed. In total, 19 species were captured, with Opisthonema oglinum and Anchovia clupeoides being the only constants. The estimated alpha diversities did not show significant differences in the temporal and spatial strata. In the beta diversity, two groups were distinguished, with the largest generally occurring in large abundances of O. oglinum. The evaluated net was efficient for the target specie O. oglinum, while the catches of other species corresponded to less than 13% of the icitiofauna already found in the CSC. Therefore, management measures that aim to restrict the use of fishing gear for the protection of diversity considering the seasonality and spatiality in the channel is not recommended.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45813550","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}
Pub Date : 2021-03-04DOI: 10.5007/2175-7925.2021.E76492
R. G. Dias-Terceiro, V. S. Gomes, M. Menezes, L. O. Demarchi, J. Fabricante, M. B. Albuquerque
The Brazilian Northeastern Brejos is an important area of biodiversity in the Atlantic Forest. However, little is known about the species composition of epiphytes in this type of vegetation. The present study aims to characterize the floristic and phytosociological structure of vascular epiphytic components in an area of the Brazilian Northeastern Brejo. All epiphytes occurring in the area were collected and compared with other studies through NMDS analysis. For the epiphyte phytosociological structure, sixty 10 × 10 m sampling plots were installed. The floristic survey of epiphytes recorded 23 species, distributed in 19 genera and ten families. In plots, 65 host individuals were sampled, and the occurrence of 197 vascular epiphytes, distributed in 12 species, 12 genera and five families was recorded. The floristic composition differs from other areas of the Atlantic Forest, including the northeast, making the Brejo a very peculiar area and with the utmost need of a plan for the conservation of these species.
{"title":"Vascular epiphytic component of “Brejo de altitude” in northeastern Brazil: floristic composition and phytosociological structure","authors":"R. G. Dias-Terceiro, V. S. Gomes, M. Menezes, L. O. Demarchi, J. Fabricante, M. B. Albuquerque","doi":"10.5007/2175-7925.2021.E76492","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E76492","url":null,"abstract":"The Brazilian Northeastern Brejos is an important area of biodiversity in the Atlantic Forest. However, little is known about the species composition of epiphytes in this type of vegetation. The present study aims to characterize the floristic and phytosociological structure of vascular epiphytic components in an area of the Brazilian Northeastern Brejo. All epiphytes occurring in the area were collected and compared with other studies through NMDS analysis. For the epiphyte phytosociological structure, sixty 10 × 10 m sampling plots were installed. The floristic survey of epiphytes recorded 23 species, distributed in 19 genera and ten families. In plots, 65 host individuals were sampled, and the occurrence of 197 vascular epiphytes, distributed in 12 species, 12 genera and five families was recorded. The floristic composition differs from other areas of the Atlantic Forest, including the northeast, making the Brejo a very peculiar area and with the utmost need of a plan for the conservation of these species.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44585044","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}
Pub Date : 2021-03-04DOI: 10.5007/2175-7925.2021.E77073
Alex Sandro Barros de Souza, Marcos Magalhães de Souza, Patrícia Pereira Gomes, Jean Victor Nery da Silva, Giuliano Kaulfuss Bertinoti, José Adolfo Mota de Almeida
Calliphoridae and Mesembrinellidae include Diptera species that are good indicators of changes in forest environments. The present work aimed to inventory the Calliphoridae and Mesembrinellidae in Ilha Grande National Park and correlate the abundance of these organisms with environmental variables. Adult dipterans were collected during two expeditions in 2019 using two sampling methods, a Malaise trap and baited traps, distributed on two islands in the park. During the study, 1,007 individuals of 12 species of Calliphoridae and four species of Mesembrinellidae were collected. Family Calliphoridae was more abundant (97.12%). The abundance of native species showed a strong negative correlation with the abundance of the genus Chrysomya. Rodrigues Island (Island I) had higher diversity levels and no species of Chrysomya were recorded in this area, which may indicate a greater degree of environmental preservation. The results indicate that human action in natural environments can negatively impact species diversity, as found in Ilha Grande National Park that, historically, was partially occupied and is still in the process of regeneration.
{"title":"A survey of Calliphoridae and Mesembrinellidae (Diptera) in semideciduous seasonal forest, Paraná, Brazil","authors":"Alex Sandro Barros de Souza, Marcos Magalhães de Souza, Patrícia Pereira Gomes, Jean Victor Nery da Silva, Giuliano Kaulfuss Bertinoti, José Adolfo Mota de Almeida","doi":"10.5007/2175-7925.2021.E77073","DOIUrl":"https://doi.org/10.5007/2175-7925.2021.E77073","url":null,"abstract":"Calliphoridae and Mesembrinellidae include Diptera species that are good indicators of changes in forest environments. The present work aimed to inventory the Calliphoridae and Mesembrinellidae in Ilha Grande National Park and correlate the abundance of these organisms with environmental variables. Adult dipterans were collected during two expeditions in 2019 using two sampling methods, a Malaise trap and baited traps, distributed on two islands in the park. During the study, 1,007 individuals of 12 species of Calliphoridae and four species of Mesembrinellidae were collected. Family Calliphoridae was more abundant (97.12%). The abundance of native species showed a strong negative correlation with the abundance of the genus Chrysomya. Rodrigues Island (Island I) had higher diversity levels and no species of Chrysomya were recorded in this area, which may indicate a greater degree of environmental preservation. The results indicate that human action in natural environments can negatively impact species diversity, as found in Ilha Grande National Park that, historically, was partially occupied and is still in the process of regeneration.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45547807","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}
Pub Date : 2020-12-09DOI: 10.5007/2175-7925.2020.e74323
Marcileia Dias de Oliveira, Josué Luiz Marinho Junior, Ângela Helena Silva Mendes Stival, Bárbara Gomes Ferreira, Francisca de Cássia Silva da Silva, Marcos Vinicius Giongo Alves
Na ocorrencia de incendios florestais, a propagacao se deve principalmente as caracteristicas das folhas. De certa forma, as folhas funcionam como potencializador ou retardador da propagacao de incendios, ja que as que possuem baixa inflamabilidade podem servir como barreiras de protecao contra incendios. O presente trabalho teve por finalidade, analisar a inflamabilidade de 6 especies do cerrado. Para a realizacao do experimento, foi utilizado o epirradiador com uma faixa de temperatura controlada entre 630 a 650 oC. Das especies avaliadas foram coletadas 50 amostras de 1g (± 0,1 g) de cada especie. Foram realizadas 50 repeticoes de queima, na qual se pode analisar o Tempo para Ignicao (TI), Frequencia de ignicao (FI), Duracao de Combustao (DC), Indice de Combustao (IC) e Valor de Inflamabilidade (VI). Os valores de inflamabilidade das especies foram: Protium Heptaphyllum igual a 1 (fracamente inflamavel); Caryocar brasiliense Cambess., Byrsonima verbascifolia (L.) DC., Acacia polyphylla e Terminalia argentea Mart. iguais a 3 (inflamaveis); e a especie Lafoensia pacari igual a 4 (altamente inflamavel). Percebeu-se que o teor de umidade das especies nao teve correlacao com os valores de inflamabilidade e que outros fatores, como presenca de oleos, resinas e gomas vegetais podem influenciar no processo de combustao.
{"title":"Avaliação da inflamabilidade de espécies nativas do cerrado","authors":"Marcileia Dias de Oliveira, Josué Luiz Marinho Junior, Ângela Helena Silva Mendes Stival, Bárbara Gomes Ferreira, Francisca de Cássia Silva da Silva, Marcos Vinicius Giongo Alves","doi":"10.5007/2175-7925.2020.e74323","DOIUrl":"https://doi.org/10.5007/2175-7925.2020.e74323","url":null,"abstract":"Na ocorrencia de incendios florestais, a propagacao se deve principalmente as caracteristicas das folhas. De certa forma, as folhas funcionam como potencializador ou retardador da propagacao de incendios, ja que as que possuem baixa inflamabilidade podem servir como barreiras de protecao contra incendios. O presente trabalho teve por finalidade, analisar a inflamabilidade de 6 especies do cerrado. Para a realizacao do experimento, foi utilizado o epirradiador com uma faixa de temperatura controlada entre 630 a 650 oC. Das especies avaliadas foram coletadas 50 amostras de 1g (± 0,1 g) de cada especie. Foram realizadas 50 repeticoes de queima, na qual se pode analisar o Tempo para Ignicao (TI), Frequencia de ignicao (FI), Duracao de Combustao (DC), Indice de Combustao (IC) e Valor de Inflamabilidade (VI). Os valores de inflamabilidade das especies foram: Protium Heptaphyllum igual a 1 (fracamente inflamavel); Caryocar brasiliense Cambess., Byrsonima verbascifolia (L.) DC., Acacia polyphylla e Terminalia argentea Mart. iguais a 3 (inflamaveis); e a especie Lafoensia pacari igual a 4 (altamente inflamavel). Percebeu-se que o teor de umidade das especies nao teve correlacao com os valores de inflamabilidade e que outros fatores, como presenca de oleos, resinas e gomas vegetais podem influenciar no processo de combustao.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45501604","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}
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