Pub Date : 2020-03-13DOI: 10.5007/2175-7925.2020.e67915
Dennis José da Silva Lima, Flávia Carla Barbosa Castro, Henrique Melo Pedroso, A. Meneses, E. Giese
Reptile biology may be directly related to hematological values, since some parameters may vary according to sex, seasonality, temperature, diet and reproductive status. For the western region of Para State, there is no information about the presence of hemoparasites in Iguana iguana and the possible hematological alterations they cause. Thus, this study aimed to identify the presence of hemoparasites, and the hematological alterations caused by them, in I. iguana in the municipality of Santarem, Para, Brazil. The search for hemoparasites was performed on blood smears with hematological dye analyzed under a light microscope at 1,000x magnification. Hematological values were obtained by counting in a Neubauer chamber using 0.01% toluidine blue reagent. Hemoparasite infection was observed in 18 animals (10 males and 8 females). There were no statistically significant differences between genders and leukocyte, thrombocyte and red blood cell values. There is hemoparasite infection in I. iguana in the region. The relationship between this hemoparasite and the host appears to have little pathogenicity in causing significant changes in leukocyte, red blood cell and thrombocyte values.
{"title":"Achados hematológicos em Iguana iguana (Reptilia, Squamata, Iguanidae) com hemoparasitose em Santarém, Pará, Brasil","authors":"Dennis José da Silva Lima, Flávia Carla Barbosa Castro, Henrique Melo Pedroso, A. Meneses, E. Giese","doi":"10.5007/2175-7925.2020.e67915","DOIUrl":"https://doi.org/10.5007/2175-7925.2020.e67915","url":null,"abstract":"Reptile biology may be directly related to hematological values, since some parameters may vary according to sex, seasonality, temperature, diet and reproductive status. For the western region of Para State, there is no information about the presence of hemoparasites in Iguana iguana and the possible hematological alterations they cause. Thus, this study aimed to identify the presence of hemoparasites, and the hematological alterations caused by them, in I. iguana in the municipality of Santarem, Para, Brazil. The search for hemoparasites was performed on blood smears with hematological dye analyzed under a light microscope at 1,000x magnification. Hematological values were obtained by counting in a Neubauer chamber using 0.01% toluidine blue reagent. Hemoparasite infection was observed in 18 animals (10 males and 8 females). There were no statistically significant differences between genders and leukocyte, thrombocyte and red blood cell values. There is hemoparasite infection in I. iguana in the region. The relationship between this hemoparasite and the host appears to have little pathogenicity in causing significant changes in leukocyte, red blood cell and thrombocyte values.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2020-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5007/2175-7925.2020.e67915","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45645661","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 : 2020-03-13DOI: 10.5007/2175-7925.2020.e70345
S. Rodrigues, D. R. S. D. Santos, M. Silva, Ailton Araújo, Carla Giovana Souza Rocha
The need to preserve permanent preservation areas (APPs) is increasing due to their importance for the survival of populations of fauna and flora that use these natural resources and for the protection of watercourses. The objective of this study was to characterize floristic composition and diversity in a secondary forest fragment in an APP in the Assurini Settlement Project in Altamira – Para, identifying species that could be used to replace degraded riparian forests in the region. The study was carried out in a secondary forest on the banks of Igarape Dispensa, on the properties of family farmers. Two plots measuring 10 m x 25 m were established in each area, in which all woody and non-woody individuals with DBH ≥10 cm present within the limits of each sample unit were inventoried. Floristic composition was analyzed, and richness and diversity were estimated. In the secondary forest, 279 individuals, 49 species, 43 genera and 26 families were identified. The family with the largest number of species and individuals was Fabaceae. The Shannon-Weaver (H’) diversity index was 3.43 nats/ind, considered to be of satisfactory diversity. The species found have the potential to be used in regeneration proposals for APPs of Igarape Dispensa.
由于永久保护区对使用这些自然资源的动植物种群的生存和水道保护的重要性，保护永久保护区的必要性正在增加。本研究的目的是表征Altamira–Para的Assurini定居点项目中APP中次生林片段的区系组成和多样性，确定可用于替代该地区退化河岸林的物种。这项研究是在Igarape Disposa河岸的一片次生林中进行的，研究对象是家庭农民的财产。在每个区域建立了两个面积为10 m x 25 m的地块，对每个样本单元范围内DBH≥10 cm的所有木质和非木质个体进行了盘点。对植物区系组成进行了分析，并对其丰富度和多样性进行了评价。在次生林中，共鉴定出26科43属49种279个个体。物种和个体数量最多的科是蚕豆科。Shannon-Waver（H'）多样性指数为3.43nats/ind，被认为具有令人满意的多样性。发现的物种有可能用于Igarape Dispensea APP的再生建议。
{"title":"Composição florística de fragmento de floresta secundária em áreas de proteção permanente do Igarapé Dispensa, no Projeto de Assentamento Assurini em Altamira – Pará","authors":"S. Rodrigues, D. R. S. D. Santos, M. Silva, Ailton Araújo, Carla Giovana Souza Rocha","doi":"10.5007/2175-7925.2020.e70345","DOIUrl":"https://doi.org/10.5007/2175-7925.2020.e70345","url":null,"abstract":"The need to preserve permanent preservation areas (APPs) is increasing due to their importance for the survival of populations of fauna and flora that use these natural resources and for the protection of watercourses. The objective of this study was to characterize floristic composition and diversity in a secondary forest fragment in an APP in the Assurini Settlement Project in Altamira – Para, identifying species that could be used to replace degraded riparian forests in the region. The study was carried out in a secondary forest on the banks of Igarape Dispensa, on the properties of family farmers. Two plots measuring 10 m x 25 m were established in each area, in which all woody and non-woody individuals with DBH ≥10 cm present within the limits of each sample unit were inventoried. Floristic composition was analyzed, and richness and diversity were estimated. In the secondary forest, 279 individuals, 49 species, 43 genera and 26 families were identified. The family with the largest number of species and individuals was Fabaceae. The Shannon-Weaver (H’) diversity index was 3.43 nats/ind, considered to be of satisfactory diversity. The species found have the potential to be used in regeneration proposals for APPs of Igarape Dispensa.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"33 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2020-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5007/2175-7925.2020.e70345","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41417412","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 : 2020-03-13DOI: 10.5007/2175-7925.2020.e67136
Olímpio Jose da Silva Junior, J. J. Corrêa-Neto, L. Gomes
Plants of the genus Ipomoea are known to cause lethal poisoning in farm animals. However, little is known about the effects of their toxins on veterinary and forensic invertebrates. This study aimed to determine the effect of an aqueous extract of Ipomoea carnea subsp. fistulosa at different concentrations on larval development time and size of immature Chrysomya albiceps (Wiedemann, 1819), a species of forensic importance in Brazil. C. albiceps L1 larvae were subjected to three treatments: control (ground beef only), 80 g ground beef mixed with 40 mL of plant extract) and 80 g of ground beef mixed with 80 mL of plant extract. Larval development time until the pupal phase was statistically longer in the 40 and 80 mL extract treatments in relation to the control. The total length of the control larvae was significantly longer than with the extract treatments. The results suggest that the toxins present in I. carnea subsp. fistulosa slow the development of C. albiceps larvae.
{"title":"Efeitos do extrato aquoso de Ipomoea carnea subsp. fistulosa sobre o desenvolvimento de larvas de Chrysomya albiceps (Wiedemann, 1819) (Calliphoridae: Diptera)","authors":"Olímpio Jose da Silva Junior, J. J. Corrêa-Neto, L. Gomes","doi":"10.5007/2175-7925.2020.e67136","DOIUrl":"https://doi.org/10.5007/2175-7925.2020.e67136","url":null,"abstract":"Plants of the genus Ipomoea are known to cause lethal poisoning in farm animals. However, little is known about the effects of their toxins on veterinary and forensic invertebrates. This study aimed to determine the effect of an aqueous extract of Ipomoea carnea subsp. fistulosa at different concentrations on larval development time and size of immature Chrysomya albiceps (Wiedemann, 1819), a species of forensic importance in Brazil. C. albiceps L1 larvae were subjected to three treatments: control (ground beef only), 80 g ground beef mixed with 40 mL of plant extract) and 80 g of ground beef mixed with 80 mL of plant extract. Larval development time until the pupal phase was statistically longer in the 40 and 80 mL extract treatments in relation to the control. The total length of the control larvae was significantly longer than with the extract treatments. The results suggest that the toxins present in I. carnea subsp. fistulosa slow the development of C. albiceps larvae.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2020-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5007/2175-7925.2020.e67136","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49260949","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 : 2020-01-01DOI: 10.5007/2175-7925.2020.e70290
Alvaro Brum-Neto, C. A. D. Lucena
Sets of jaws of the sandskates Psammobatis extenta (n = 10), P. lentiginosa (only adult specimens, n = 8) and P. rutrum (only adult specimens, n = 10) were examined by scanning electron microscopy. Female teeth of the three species and those of the immature P. extenta did not show differences, all having monocuspid crushing teeth, with a small, unpronounced or absent cusp. Monognathic heterodonty was observed in adult specimens in both sexes of the three species analyzed. Immature P. extenta and females of the three species differed from the adult males in having a crushing as opposed to a clutching dentition, implying gynandric heterodonty. Teeth of males of P. extenta have pointed, well-pronounced, rounded cusps, whereas males of P. rutrum and P. lentiginosa have elliptical and similar cusps. Immature specimens of P. extenta have small cusps. Teeth of P. lentiginosa have a longitudinal sulcus on their labial face, a character herein hypothesized as a derived condition.
{"title":"Teeth morphology and dental sexual dimorphism of three species of the sandskate genus Psammobatis Günther, 1870 from the Brazilian coast (Rajiformes, Arhynchobatidae)","authors":"Alvaro Brum-Neto, C. A. D. Lucena","doi":"10.5007/2175-7925.2020.e70290","DOIUrl":"https://doi.org/10.5007/2175-7925.2020.e70290","url":null,"abstract":"Sets of jaws of the sandskates Psammobatis extenta (n = 10), P. lentiginosa (only adult specimens, n = 8) and P. rutrum (only adult specimens, n = 10) were examined by scanning electron microscopy. Female teeth of the three species and those of the immature P. extenta did not show differences, all having monocuspid crushing teeth, with a small, unpronounced or absent cusp. Monognathic heterodonty was observed in adult specimens in both sexes of the three species analyzed. Immature P. extenta and females of the three species differed from the adult males in having a crushing as opposed to a clutching dentition, implying gynandric heterodonty. Teeth of males of P. extenta have pointed, well-pronounced, rounded cusps, whereas males of P. rutrum and P. lentiginosa have elliptical and similar cusps. Immature specimens of P. extenta have small cusps. Teeth of P. lentiginosa have a longitudinal sulcus on their labial face, a character herein hypothesized as a derived condition.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5007/2175-7925.2020.e70290","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70511569","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 : 2019-12-12DOI: 10.5007/2175-7925.2019v32n4p79
Alysson Rodrigo Fonseca, G. A. A. Silva
Brazilian legal reserves (LRs) are preservation areas located on private land and contribute to the maintenance of mammal species diversity and their movement patterns between vegetation fragments. This study sought to quantify the richness and analyze the occurrence frequency of the medium- and large-sized terrestrial mammals of a 76.5 ha LR in the municipality of Pedra do Indaia in Minas Gerais State, Brazil. Data collection lasted for 28 months and was based on the following sampling methods: direct and indirect observation and camera trapping. We registered 25 species from seven orders and 14 families. The most represented orders were Carnivora, Cingulata and Rodentia, while Lagomorpha and Didelphimorphia were the least recorded orders. Of the 25 recorded species, six are cited as threatened with extinction on the Minas Gerais Red List and four are cited in the Brazil Red Book of Threatened Fauna. The occurrence of threatened animal species suggests the need to maintain the LR and the native vegetation remnants in order to keep the habitat quality necessary for the persistence of populations and their ecosystem services.
巴西法定保护区是位于私人土地上的保护区，有助于维护哺乳动物物种多样性及其在植被碎片之间的运动模式。本研究试图量化巴西米纳斯吉拉斯州Pedra do Indaia市76.5公顷LR的中型和大型陆生哺乳动物的丰富度，并分析其发生频率。数据收集持续了28个月，基于以下采样方法：直接和间接观察以及相机捕捉。我们登记了来自7目14科的25个物种。最具代表性的目是食肉目、Cingulata目和Rodentia目，而Lagomorpha目和Didelphimorphia目是记录最少的目。在25个记录在案的物种中，有6个被米纳斯吉拉斯红色名录列为濒临灭绝物种，4个被巴西濒危动物红皮书列为濒危物种。受威胁动物物种的出现表明，有必要维持LR和原生植被残余，以保持种群持续存在及其生态系统服务所需的栖息地质量。
{"title":"Mamíferos terrestres de médio e grande porte em uma área de reserva legal na região centro-oeste de Minas Gerais, Brasil","authors":"Alysson Rodrigo Fonseca, G. A. A. Silva","doi":"10.5007/2175-7925.2019v32n4p79","DOIUrl":"https://doi.org/10.5007/2175-7925.2019v32n4p79","url":null,"abstract":"Brazilian legal reserves (LRs) are preservation areas located on private land and contribute to the maintenance of mammal species diversity and their movement patterns between vegetation fragments. This study sought to quantify the richness and analyze the occurrence frequency of the medium- and large-sized terrestrial mammals of a 76.5 ha LR in the municipality of Pedra do Indaia in Minas Gerais State, Brazil. Data collection lasted for 28 months and was based on the following sampling methods: direct and indirect observation and camera trapping. We registered 25 species from seven orders and 14 families. The most represented orders were Carnivora, Cingulata and Rodentia, while Lagomorpha and Didelphimorphia were the least recorded orders. Of the 25 recorded species, six are cited as threatened with extinction on the Minas Gerais Red List and four are cited in the Brazil Red Book of Threatened Fauna. The occurrence of threatened animal species suggests the need to maintain the LR and the native vegetation remnants in order to keep the habitat quality necessary for the persistence of populations and their ecosystem services.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"32 1","pages":"79-88"},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5007/2175-7925.2019v32n4p79","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48870284","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 : 2019-12-12DOI: 10.5007/2175-7925.2019v32n4p11
Marcone Moreira Santos, Glauciana M. Ataíde, Raquel Maria Oliveira Pires
The objective of this study was to evaluate the germination rate, germination speed index and viability using the tetrazolium test and electrical conductivity in seeds of Apuleia leiocarpa subjected to accelerated aging, and we also determined the best tests to evaluate the quality of the seeds of this species. The seeds were aged for 0, 24, 48 and 72 hours in an aging chamber at 48oC. The physiological quality of the seeds decreased even in the first 24 hours of aging. The tetrazolium and electrical conductivity tests were effective in determining the physiological quality of A. leiocarpa seeds subjected to accelerated aging.
{"title":"Qualidade fisiológica de sementes de garapa (Apuleia leiocarpa) submetidas ao envelhecimento acelerado","authors":"Marcone Moreira Santos, Glauciana M. Ataíde, Raquel Maria Oliveira Pires","doi":"10.5007/2175-7925.2019v32n4p11","DOIUrl":"https://doi.org/10.5007/2175-7925.2019v32n4p11","url":null,"abstract":"The objective of this study was to evaluate the germination rate, germination speed index and viability using the tetrazolium test and electrical conductivity in seeds of Apuleia leiocarpa subjected to accelerated aging, and we also determined the best tests to evaluate the quality of the seeds of this species. The seeds were aged for 0, 24, 48 and 72 hours in an aging chamber at 48oC. The physiological quality of the seeds decreased even in the first 24 hours of aging. The tetrazolium and electrical conductivity tests were effective in determining the physiological quality of A. leiocarpa seeds subjected to accelerated aging.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"32 1","pages":"11-17"},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5007/2175-7925.2019v32n4p11","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48286372","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 : 2019-12-12DOI: 10.5007/2175-7925.2019v32n4p45
T. Andersen, L. C. Pinho
Fissimentum mendesi n. sp. is described and figured on the basis of males collected in light traps in two localities in the state of Sao Paulo, Brazil. The new species is apparently closely related to F. desiccatum Cranston & Nolte, 1996 and F. guairense Pinho & Froehlich, 2011 by having a posterior projection of tergite IX, but can easily be distinguished from its congeners on the combination of a short, stout, evenly curved superior volsella and an antennal ratio of about 1.5. A revised key to the males of the genus is provided.
{"title":"A new species of Fissimentum Cranston & Nolte, 1996 from the state of São Paulo, Brazil (Diptera: Chironomidae, Chironominae)","authors":"T. Andersen, L. C. Pinho","doi":"10.5007/2175-7925.2019v32n4p45","DOIUrl":"https://doi.org/10.5007/2175-7925.2019v32n4p45","url":null,"abstract":"Fissimentum mendesi n. sp. is described and figured on the basis of males collected in light traps in two localities in the state of Sao Paulo, Brazil. The new species is apparently closely related to F. desiccatum Cranston & Nolte, 1996 and F. guairense Pinho & Froehlich, 2011 by having a posterior projection of tergite IX, but can easily be distinguished from its congeners on the combination of a short, stout, evenly curved superior volsella and an antennal ratio of about 1.5. A revised key to the males of the genus is provided.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"32 1","pages":"45-49"},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44806415","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 : 2019-12-12DOI: 10.5007/2175-7925.2019v32n4p51
Severino Adriano de Oliveira Lima, A. Freitas, H. A. Andrade
Knowledge about biological diversity is essential for the establishment of measures that lead to the protection of natural resources. Sandy beaches are areas of high diversity, with the malacofauna being an important component. Several mollusks are of great economic importance and the spatial distribution of these species on sandy beaches is linked to physical and biological factors. The aim of this study was to analyze the diversity of the malacofauna associated with Anomalocardia flexuosa distribution on a tropical sandy beach. Samples were collected bimonthly between April 2016 and February 2018 at 34 points distributed throughout a sandbar. The frequencies of occurrence of the species were calculated, and diversity indices were estimated and correlated with the densities of A. flexuosa. A total of 4,780 individuals from 11 species were obtained. The most frequent species were A. flexuosa and Neritina virginea. There were significant correlations between A. fleuxosa density and diversity, and overlap occurred between mollusks over the collection months and sites. Therefore, targeted catches for this species should also consider all other mollusks to mitigate future damage to malacofauna diversity in the region.
{"title":"Diversidade da malacofauna associada à distribuição de Anomalocardia flexuosa (Linnaeus, 1767) (Mollusca: Bivalvia) em uma praia arenosa tropical","authors":"Severino Adriano de Oliveira Lima, A. Freitas, H. A. Andrade","doi":"10.5007/2175-7925.2019v32n4p51","DOIUrl":"https://doi.org/10.5007/2175-7925.2019v32n4p51","url":null,"abstract":"Knowledge about biological diversity is essential for the establishment of measures that lead to the protection of natural resources. Sandy beaches are areas of high diversity, with the malacofauna being an important component. Several mollusks are of great economic importance and the spatial distribution of these species on sandy beaches is linked to physical and biological factors. The aim of this study was to analyze the diversity of the malacofauna associated with Anomalocardia flexuosa distribution on a tropical sandy beach. Samples were collected bimonthly between April 2016 and February 2018 at 34 points distributed throughout a sandbar. The frequencies of occurrence of the species were calculated, and diversity indices were estimated and correlated with the densities of A. flexuosa. A total of 4,780 individuals from 11 species were obtained. The most frequent species were A. flexuosa and Neritina virginea. There were significant correlations between A. fleuxosa density and diversity, and overlap occurred between mollusks over the collection months and sites. Therefore, targeted catches for this species should also consider all other mollusks to mitigate future damage to malacofauna diversity in the region.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"32 1","pages":"51-62"},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5007/2175-7925.2019v32n4p51","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42726273","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}
O experimento teve como objetivo avaliar a qualidade e o desenvolvimento de mudas de Araucaria angustifolia (Bertol.) Kuntze, de diferentes idades e produzidas em diferentes volumes de tubetes, visando determinar a idade ótima de expedição das mudas. Foram usados três volumes de tubetes (50, 100 e 200 cm³), e consideradas quatro idades de expedição (90, 120, 150 e 180 dias). O delineamento experimental foi inteiramente casualizado, em esquema fatorial 3 x 2, com 12 tratamentos e cinco repetições por tratamento, totalizando 2.400 plantas no experimento. As avaliações foram realizadas mensalmente, utilizando-se cinco mudas de cada repetição e selecionadas aleatoriamente. Foram mensuradas e determinadas as seguintes variáveis em cada ocasião: altura, diâmetro do coleto, massa seca de raízes, massa seca aérea, número de raízes secundárias e índice de qualidade de Dickson. Somente as variáveis altura, massa seca aérea e número de raízes secundárias apresentaram diferenças significativas entre os tratamentos. As idades consideradas ótimas para expedição das mudas de araucária foram de 120 dias, quando em tubete de 50 cm³, e de 150 dias, quando em tubete de 100 cm³. Para a manutenção de mudas em viveiro por períodos superiores a 150 dias, o uso de tubetes de com volume de 200 cm³ foi considerado mais adequado.
{"title":"Definição de idades ótimas para expedição de mudas de Araucaria angustifolia (Bertol.) Kuntze (Araucariaceae) em função de sua qualidade e volume de recipientes","authors":"Lauri Amândio Schorn, Giulia Pandini, Ricardo Bittencourt, Tatiele Anete Bergamo Fenilli","doi":"10.5007/2175-7925.2019v32n4p19","DOIUrl":"https://doi.org/10.5007/2175-7925.2019v32n4p19","url":null,"abstract":"O experimento teve como objetivo avaliar a qualidade e o desenvolvimento de mudas de Araucaria angustifolia (Bertol.) Kuntze, de diferentes idades e produzidas em diferentes volumes de tubetes, visando determinar a idade ótima de expedição das mudas. Foram usados três volumes de tubetes (50, 100 e 200 cm³), e consideradas quatro idades de expedição (90, 120, 150 e 180 dias). O delineamento experimental foi inteiramente casualizado, em esquema fatorial 3 x 2, com 12 tratamentos e cinco repetições por tratamento, totalizando 2.400 plantas no experimento. As avaliações foram realizadas mensalmente, utilizando-se cinco mudas de cada repetição e selecionadas aleatoriamente. Foram mensuradas e determinadas as seguintes variáveis em cada ocasião: altura, diâmetro do coleto, massa seca de raízes, massa seca aérea, número de raízes secundárias e índice de qualidade de Dickson. Somente as variáveis altura, massa seca aérea e número de raízes secundárias apresentaram diferenças significativas entre os tratamentos. As idades consideradas ótimas para expedição das mudas de araucária foram de 120 dias, quando em tubete de 50 cm³, e de 150 dias, quando em tubete de 100 cm³. Para a manutenção de mudas em viveiro por períodos superiores a 150 dias, o uso de tubetes de com volume de 200 cm³ foi considerado mais adequado.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48001897","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 : 2019-12-12DOI: 10.5007/2175-7925.2019v32n4p29
J. A. Rigotti, C. Pompêo, A. Fonseca
Urbanization causes many changes in stream communities and rivers usually suffer major structural modifications under intense urban occupation. The goal of this study was to investigate the effects of urbanization on physicochemical habitat characteristics and evaluate the responses of urbanization on functional feeding groups (FFGs) of invertebrates. Water quality parameters (temperature, conductivity, dissolved oxygen, pH, phosphorus, chlorophyll-a, turbidity and organic matter) and flow parameters were measured in least and severely urbanized areas. FFGs of macroinvertebrates were analyzed and applied as surrogates of ecosystem attributes. The differences in the macroinvertebrate community of the least and severely urbanized areas were assessed using non-metric multidimensional scaling (nMDS) and a permutational multivariate analysis of variance (Permanova). Differences between the least and severely urbanized areas were observed with nMDS. The Permanova also showed a significant difference between the nMDS groups. The least urbanized areas presented greater richness for each FFG. On the other hand, severely urbanized areas presented a major abundance of gathering collectors and predators. Thus, the composition of FFGs responded to habitat alterations that were represented by water quality and the flow parameters.
{"title":"Effects of urbanization on habitat characteristics: what are the responses of habitat alteration on functional feeding groups of aquatic invertebrates?","authors":"J. A. Rigotti, C. Pompêo, A. Fonseca","doi":"10.5007/2175-7925.2019v32n4p29","DOIUrl":"https://doi.org/10.5007/2175-7925.2019v32n4p29","url":null,"abstract":"Urbanization causes many changes in stream communities and rivers usually suffer major structural modifications under intense urban occupation. The goal of this study was to investigate the effects of urbanization on physicochemical habitat characteristics and evaluate the responses of urbanization on functional feeding groups (FFGs) of invertebrates. Water quality parameters (temperature, conductivity, dissolved oxygen, pH, phosphorus, chlorophyll-a, turbidity and organic matter) and flow parameters were measured in least and severely urbanized areas. FFGs of macroinvertebrates were analyzed and applied as surrogates of ecosystem attributes. The differences in the macroinvertebrate community of the least and severely urbanized areas were assessed using non-metric multidimensional scaling (nMDS) and a permutational multivariate analysis of variance (Permanova). Differences between the least and severely urbanized areas were observed with nMDS. The Permanova also showed a significant difference between the nMDS groups. The least urbanized areas presented greater richness for each FFG. On the other hand, severely urbanized areas presented a major abundance of gathering collectors and predators. Thus, the composition of FFGs responded to habitat alterations that were represented by water quality and the flow parameters.","PeriodicalId":29999,"journal":{"name":"Biotemas","volume":"32 1","pages":"29-44"},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5007/2175-7925.2019v32n4p29","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45586772","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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