Do hydroelectric dams affect the abundance and population structure of freshwater shrimps?

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal do Triângulo Mineiro-
Autor(es): dc.contributorUniversidade Estadual de Maringá (UEM)-
Autor(es): dc.creatorRodrigues, Larissa Rosa [UNESP]-
Autor(es): dc.creatorda Costa, Jaqueline Roberta Pereira-
Autor(es): dc.creatorPassafaro, Rafael Montini-
Autor(es): dc.creatorde Andrade, Luciana Segura-
Data de aceite: dc.date.accessioned2022-08-04T22:08:47Z-
Data de disponibilização: dc.date.available2022-08-04T22:08:47Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.4025/actascibiolsci.v42i2.48928-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/221512-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/221512-
Descrição: dc.descriptionFreshwater shrimps play an important role in many ecological processes since they are epibenthic detritivores but also prey on other invertebrates and are predated by fishes. The knowledge about their biology allow the development of management strategies to improve the use of natural resources by avoiding overfishing and enhancing productivity. Here we evaluated the population structure of the shrimp Macrobrachium amazonicum in the river Rio Grande, upstream of the Água Vermelha hydroelectric dam. They were captured monthly from October 2017 until March 2018, in six sites along the river. The first site was ∿1000 m distant from the dam and the sixth was ∿4000 m distant. A sac-like sieve and traps were used to capture the shrimps. The sieve was dragged three times for 180o. The traps were left by the river margins for six hours. In the laboratory, the shrimps were sexed and measured (carapace length; CL). In total, 6455 individuals were captured: 4499 females (294 breeding), 1445 males, and 217 juveniles. Female mean size was 7.50 ± 3.47 mm, male mean size was 7.44 ± 2.40 mm, and juvenile mean size was 3.24 ± 1.10 mm. The smallest individual was found in site III and it was a juvenile of 1.08 mm. The largest had 20 mm and was found in site II. The smallest breeding female had 3.8 mm CL. The largest individuals were more abundant in the sites near the dam, whereas the smallest were more abundant in the farthest sites. The highest abundance was seen in sites III and IV, and the lowest, in site VI. Unlike males and juveniles, females (both breeding and non-breeding) were more abundant (Anova, p < 0.01) near the dam. By knowing the population structure of M. amazonicum it is possible to understand how they are being affected by the environmental changes caused by the hydroelectric dam.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)-
Descrição: dc.descriptionInstituto de Biociências Universidade Estadual Júlio de Mesquita Filho, Rua Prof. Dr. Antônio Celso Wagner Zanin, 250, Distrito de Rubião Júnior-
Descrição: dc.descriptionUniversidade Federal do Triângulo Mineiro-
Descrição: dc.descriptionUniversidade Estadual de Maringá-
Descrição: dc.descriptionInstituto de Biociências Universidade Estadual Júlio de Mesquita Filho, Rua Prof. Dr. Antônio Celso Wagner Zanin, 250, Distrito de Rubião Júnior-
Descrição: dc.descriptionFAPEMIG: 31/2017 PROPPG/UFTM-
Formato: dc.format1-9-
Idioma: dc.languageen-
Relação: dc.relationActa Scientiarum - Biological Sciences-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCrustacea-
Palavras-chave: dc.subjectDams-
Palavras-chave: dc.subjectDecapoda-
Palavras-chave: dc.subjectSustainable use-
Título: dc.titleDo hydroelectric dams affect the abundance and population structure of freshwater shrimps?-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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