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Justino JT, Demetrio GR, Neres PF, Meneses D, Pinto TK. A functional perspective of nematode assemblages as proxy of quality in tropical estuarine tidal flats. MARINE ENVIRONMENTAL RESEARCH 2023; 186:105922. [PMID: 36812839 DOI: 10.1016/j.marenvres.2023.105922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 12/07/2022] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Functional aspects of biological communities influence ecosystem processes and it is urgent to understand how human disturbances affect functional diversity and ecosystem functions and services. Our purpose was to address the use of different functional metrics of nematode assemblages to evaluate the ecological status of tropical estuaries subjected to different human activities, aiming to advance and improve the knowledge about the usefulness of functional attributes as indicators of environmental quality. Three approaches were compared: functional diversity indexes, single trait, and multi traits using the Biological Traits Analysis. The RLQ + fourth-corner combined method was used to identify relationships among functional traits, inorganic nutrients, and metals concentrations. Lower values of FDiv, FSpe, and FOri indicate a convergence of functions, characterizing impacted conditions. A dominant set of traits was related to disturbance, mainly inorganic nutrient enrichment. All the approaches allowed for the detection of disturbed conditions, however, multi traits was the most sensitive one.
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Teixeira PEF, Corrêa CL, Oliveira FBD, Alencar ACMDB, Neves LBD, Garcia DD, Almeida FBD, Pereira LCM, Machado-Silva JR, Rodrigues-Silva R. Occurrence of Capillaria sp. in the liver of sheep (Ovis aries ) in a slaughterhouse in the state of Acre, Brazil. ACTA ACUST UNITED AC 2018; 27:226-231. [PMID: 29898198 DOI: 10.1590/s1984-296120180030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 03/19/2018] [Indexed: 11/21/2022]
Abstract
Although sheep farming has grown in the state of Acre over the past four decades, little is known about occurrences of helminthiases in the herds of this region. The objective of the study was to assess the occurrences of non-intestinal helminthiasis among sheep slaughtered in Rio Branco. A total of 110 sheep livers were inspected from two slaughter batches (july 2014 and march 2015) in a slaughterhouse in Rio Branco. Livers with macroscopic lesions were photographed and were then subjected to histopathological analysis under an optical microscope. The macroscopic lesions showed small nodes with inflammatory characteristics and areas of fibrosis, which appeared to be calcified, thus suggesting a granulomatous reaction. Of the 110 evaluated livers, we noticed 110 nodules in total; these nodules have an average size of 0.5 cm. The histopathological analysis showed alterations to the architecture of the hepatic lobe, with multiple foci of necrosis and polymorphonuclear cells. Two samples revealed the presence of helminths from Nematode class and Capillaria sp. eggs identified by the typical morphology and morphometry. This seems to be the first report of Capillaria sp. in sheep livers in Brazil, and it serves as an important alert regarding animal health surveillance and control and regarding the Capillaria sp. zoonotic role in humans.
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Affiliation(s)
| | - Christiane Leal Corrêa
- Departamento de Patologia, Faculdade de Ciências Médicas, Centro Biomédico, Universidade do Estado do Rio de Janeiro - UERJ, Rio de Janeiro, RJ, Brasil.,Escola de Medicina, Universidade Estácio de Sá - Estácio, Rio de Janeiro, RJ, Brasil
| | - Fernanda Bittencourt de Oliveira
- Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Alba Cristina Miranda de Barros Alencar
- Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil.,Laboratório de Helmintologia Romero Lascasas Porto, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Centro Biomédico, Universidade do Estado do Rio de Janeiro - UERJ, Rio de Janeiro, RJ, Brasil
| | - Leandro Batista das Neves
- Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Daniel Daipert Garcia
- Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Fernanda Barbosa de Almeida
- Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Luis Cláudio Muniz Pereira
- Departamento de Patologia, Faculdade de Ciências Médicas, Centro Biomédico, Universidade do Estado do Rio de Janeiro - UERJ, Rio de Janeiro, RJ, Brasil.,Escola de Medicina, Universidade Estácio de Sá - Estácio, Rio de Janeiro, RJ, Brasil
| | - José Roberto Machado-Silva
- Laboratório de Helmintologia Romero Lascasas Porto, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Centro Biomédico, Universidade do Estado do Rio de Janeiro - UERJ, Rio de Janeiro, RJ, Brasil
| | - Rosângela Rodrigues-Silva
- Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
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