Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/5163 |
Resumo: | In the freshwater environment, the shrimp species Macrobrachium amazonicum is an important component in the energy flow and contributes largely for the nutrient cycling. Furthermore, this species has a large geographical distribution in Brazil and presents a broad intraspecific variability. In this way, the aim of this study is to evaluate the influence of the abiotic factors on the population structure and reproduction, and also elucidate issues about the dynamics and growth of the population. The samplings were performed monthly, from August 2013 to July 2014, at the Porto dam, on the municipality of Perdões, Minas Gerais. The animals were captured in an active way with 15 moves using a sieve net under the bank of aquatic macrophytes and taken to the laboratory to be sexed, measured the cephalothorax, count the eggs of the ovigerous females and determine the volume of the eggs. To evaluate the relative contribution of the abiotic factors: dissolved oxygen, rainfall, pH, temperature and conductivity, over the ecological and biological aspects of the specimens, it was used the hierarchical partitioning analysis. The cephalothorax lengths were distributed in size classes and demographic categories, and the growth curve was calculated according to the von Bertalanffy’s growth model. Among the five factors tested, only the dissolved oxygen did not present relation with other aspects. The conductivity affected negatively the abundance and the size classes 2 and 3, and positively the fecundity. However, the temperature had a positive relationship with the cephalothorax length, the number and volume of the eggs and also on the percentage of ovigerous females. A total of 2.502 shrimps were collected, being 1.248 males, 1.253 females, and only males translucent morphotypes. The abundance differed between seasons. The proportion between females and males in general did not differ from the expected 1:1, but the males were significantly bigger than females. The smaller specimen was 1.44 mm of cephalothorax, while the bigger specimen was 10.72 mm. About the expected growth, the maximum length of this population is 8.80 mm and the growth rate is 0.017 mm/month. The population of M. amazonicum in Minas Gerais appears to be well adapted to the region. The aspects observed regarding growth, reproduction and population structure confirm what is known for the crustaceans, of the Macrobrachium genus and for this species. Moreover, the results reinforce the importance of the abiotic factors on biology and ecology of the freshwater shrimps. |
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Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas GeraisTemperaturaCondutividadeReproduçãoEstrutura populacionalMinas GeraisRazão sexualDinâmica populacionalCarideaTemperatureConductivityReproductionPopulation structureSex ratioPopulation dynamicsCNPQ_NÃO_INFORMADOIn the freshwater environment, the shrimp species Macrobrachium amazonicum is an important component in the energy flow and contributes largely for the nutrient cycling. Furthermore, this species has a large geographical distribution in Brazil and presents a broad intraspecific variability. In this way, the aim of this study is to evaluate the influence of the abiotic factors on the population structure and reproduction, and also elucidate issues about the dynamics and growth of the population. The samplings were performed monthly, from August 2013 to July 2014, at the Porto dam, on the municipality of Perdões, Minas Gerais. The animals were captured in an active way with 15 moves using a sieve net under the bank of aquatic macrophytes and taken to the laboratory to be sexed, measured the cephalothorax, count the eggs of the ovigerous females and determine the volume of the eggs. To evaluate the relative contribution of the abiotic factors: dissolved oxygen, rainfall, pH, temperature and conductivity, over the ecological and biological aspects of the specimens, it was used the hierarchical partitioning analysis. The cephalothorax lengths were distributed in size classes and demographic categories, and the growth curve was calculated according to the von Bertalanffy’s growth model. Among the five factors tested, only the dissolved oxygen did not present relation with other aspects. The conductivity affected negatively the abundance and the size classes 2 and 3, and positively the fecundity. However, the temperature had a positive relationship with the cephalothorax length, the number and volume of the eggs and also on the percentage of ovigerous females. A total of 2.502 shrimps were collected, being 1.248 males, 1.253 females, and only males translucent morphotypes. The abundance differed between seasons. The proportion between females and males in general did not differ from the expected 1:1, but the males were significantly bigger than females. The smaller specimen was 1.44 mm of cephalothorax, while the bigger specimen was 10.72 mm. About the expected growth, the maximum length of this population is 8.80 mm and the growth rate is 0.017 mm/month. The population of M. amazonicum in Minas Gerais appears to be well adapted to the region. The aspects observed regarding growth, reproduction and population structure confirm what is known for the crustaceans, of the Macrobrachium genus and for this species. Moreover, the results reinforce the importance of the abiotic factors on biology and ecology of the freshwater shrimps.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Ecologia e Conservação de Paisagens Fragmentadas e AgrossistemasNo ambiente dulcícola, a espécie de camarão Macrobrachium amazonicum, é um importante componente do fluxo de energia e contribui amplamente para ciclagem de nutrientes. Além disso, esta espécie possui grande distribuição geográfica no Brasil e apresenta ampla variabilidade intraespecífica. O objetivo deste trabalho é avaliar a influência dos fatores abióticos na estrutura populacional e na reprodução, além de elucidar questões sobre a dinâmica e crescimento da população. As coletas foram realizadas mensalmente, no período de Agosto de 2013 a Julho de 2014, na represa do Porto, no município de Perdões, Minas Gerais. Os animais foram capturados de forma ativa através de 15 lances de peneira sob o banco de macrófitas e levados para laboratório para serem sexados, mensurados quanto ao comprimento do cefalotórax, contabilizados os ovos das fêmeas ovígeras e determinados os volumes dos ovos. Para avaliar a contribuição relativa dos fatores abióticos: oxigênio dissolvido, pluviosidade, pH, temperatura e condutividade, sobre os aspectos ecológicos e biológicos dos espécimes, foi utilizada a análise de partição hierárquica. Os comprimentos do cefalotórax foram distribuídos em classes de tamanho e em categorias demográficas e a curva de crescimento foi calculada de acordo com o modelo de crescimento de von Bertalanffy. Dos cinco fatores testados apenas o oxigênio dissolvido não apresentou relação com nenhum aspecto, por outro lado, a condutividade influenciou de maneira negativa a abundância e as classes de tamanho 2 e 3, e positivamente a fecundidade. A temperatura, por sua vez, apresentou relação positiva com comprimento do cefalotórax, o número e volume de ovos e também na porcentagem de fêmeas ovígeras. Foi encontrado um total de 2502 camarões, sendo 1248 machos, 1253 fêmeas, e somente machos dos morfotipos translúcidos. A abundância diferiu entre as estações. A proporção de fêmeas e machos da população em geral não diferiu do esperado 1:1, mas os machos foram significativamente maiores que as fêmeas. O menor espécime exibiu 1,44mm de cefalotórax, enquanto o maior indivíduo apresentou 10,72mm. No crescimento estimado, o comprimento máximo dessa população é de 8,80mm e a taxa de crescimento é de 0,017mm/mês. A população de M. amazonicum em Minas Gerais parece estar bem adaptada à região. Os aspectos de crescimento, reprodução e estrutura da população observados confirmam o que é conhecido para os crustáceos, o gênero Macrobrachium e para esta espécie. Além disso, os resultados reforçam a importância dos fatores abióticos na biologia e ecologia dos camarões de água doce.UNIVERSIDADE FEDERAL DE LAVRASDBI - Programa de Pós-graduaçãoUFLABRASILBueno, Alessandra Angélica de PáduaAlmeida, Ariádine Cristine deCosta, Fernando Antônio FrieiroBonatto, Carolina de Rezende2015-03-13T12:13:59Z2015-03-13T12:13:59Z20152015-01-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfBONATTO, C. de R. Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais. 2015. 79 p. Dissertação (Mestrado em Ecologia Aplicada) - Universidade Federal de Lavras, Lavras, 2015.http://repositorio.ufla.br/jspui/handle/1/5163info:eu-repo/semantics/openAccessporreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2016-03-08T18:41:29Zoai:localhost:1/5163Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2016-03-08T18:41:29Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais |
title |
Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais |
spellingShingle |
Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais Bonatto, Carolina de Rezende Temperatura Condutividade Reprodução Estrutura populacional Minas Gerais Razão sexual Dinâmica populacional Caridea Temperature Conductivity Reproduction Population structure Sex ratio Population dynamics CNPQ_NÃO_INFORMADO |
title_short |
Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais |
title_full |
Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais |
title_fullStr |
Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais |
title_full_unstemmed |
Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais |
title_sort |
Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais |
author |
Bonatto, Carolina de Rezende |
author_facet |
Bonatto, Carolina de Rezende |
author_role |
author |
dc.contributor.none.fl_str_mv |
Bueno, Alessandra Angélica de Pádua Almeida, Ariádine Cristine de Costa, Fernando Antônio Frieiro |
dc.contributor.author.fl_str_mv |
Bonatto, Carolina de Rezende |
dc.subject.por.fl_str_mv |
Temperatura Condutividade Reprodução Estrutura populacional Minas Gerais Razão sexual Dinâmica populacional Caridea Temperature Conductivity Reproduction Population structure Sex ratio Population dynamics CNPQ_NÃO_INFORMADO |
topic |
Temperatura Condutividade Reprodução Estrutura populacional Minas Gerais Razão sexual Dinâmica populacional Caridea Temperature Conductivity Reproduction Population structure Sex ratio Population dynamics CNPQ_NÃO_INFORMADO |
description |
In the freshwater environment, the shrimp species Macrobrachium amazonicum is an important component in the energy flow and contributes largely for the nutrient cycling. Furthermore, this species has a large geographical distribution in Brazil and presents a broad intraspecific variability. In this way, the aim of this study is to evaluate the influence of the abiotic factors on the population structure and reproduction, and also elucidate issues about the dynamics and growth of the population. The samplings were performed monthly, from August 2013 to July 2014, at the Porto dam, on the municipality of Perdões, Minas Gerais. The animals were captured in an active way with 15 moves using a sieve net under the bank of aquatic macrophytes and taken to the laboratory to be sexed, measured the cephalothorax, count the eggs of the ovigerous females and determine the volume of the eggs. To evaluate the relative contribution of the abiotic factors: dissolved oxygen, rainfall, pH, temperature and conductivity, over the ecological and biological aspects of the specimens, it was used the hierarchical partitioning analysis. The cephalothorax lengths were distributed in size classes and demographic categories, and the growth curve was calculated according to the von Bertalanffy’s growth model. Among the five factors tested, only the dissolved oxygen did not present relation with other aspects. The conductivity affected negatively the abundance and the size classes 2 and 3, and positively the fecundity. However, the temperature had a positive relationship with the cephalothorax length, the number and volume of the eggs and also on the percentage of ovigerous females. A total of 2.502 shrimps were collected, being 1.248 males, 1.253 females, and only males translucent morphotypes. The abundance differed between seasons. The proportion between females and males in general did not differ from the expected 1:1, but the males were significantly bigger than females. The smaller specimen was 1.44 mm of cephalothorax, while the bigger specimen was 10.72 mm. About the expected growth, the maximum length of this population is 8.80 mm and the growth rate is 0.017 mm/month. The population of M. amazonicum in Minas Gerais appears to be well adapted to the region. The aspects observed regarding growth, reproduction and population structure confirm what is known for the crustaceans, of the Macrobrachium genus and for this species. Moreover, the results reinforce the importance of the abiotic factors on biology and ecology of the freshwater shrimps. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-03-13T12:13:59Z 2015-03-13T12:13:59Z 2015 2015-01-29 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
BONATTO, C. de R. Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais. 2015. 79 p. Dissertação (Mestrado em Ecologia Aplicada) - Universidade Federal de Lavras, Lavras, 2015. http://repositorio.ufla.br/jspui/handle/1/5163 |
identifier_str_mv |
BONATTO, C. de R. Ecologia e biologia do camarão de água doce Macrobrachium amazonicum (Heller, 1862)(Decapoda: Caridea: Palaemonidae), em Minas Gerais. 2015. 79 p. Dissertação (Mestrado em Ecologia Aplicada) - Universidade Federal de Lavras, Lavras, 2015. |
url |
http://repositorio.ufla.br/jspui/handle/1/5163 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UNIVERSIDADE FEDERAL DE LAVRAS DBI - Programa de Pós-graduação UFLA BRASIL |
publisher.none.fl_str_mv |
UNIVERSIDADE FEDERAL DE LAVRAS DBI - Programa de Pós-graduação UFLA BRASIL |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835100995387392 |