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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Meio Ambiente. |
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Data corrente: |
09/01/2015 |
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Data da última atualização: |
09/01/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
JERÔNIMO, G. T.; PÁDUA, S. B. de; BAMPI, D.; GONÇALVES, E. L. T.; GARCIA, P.; ISHIKAWA, M. M.; MARTINS, M. L. |
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Afiliação: |
GABRIELA TOMÁS JERÔNIMO, AQUOS; SANTIAGO BENITES DE PÁDUA, Aquivet Saúde Aquática; D. BAMPI, UFSC; E. L. T. GONÇALVES, UFSC; P. GARCIA, UFSC; MARCIA MAYUMI ISHIKAWA, CPAO; MAURICIO LATERÇA MARTINS, UFSC. |
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Título: |
Haematological and histopathological analysis in South American fish Piaractus mesopotamicus parasitized by monogenean (Dactylogyridae). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Brazilian Journal of Biology, v. 74, 2014. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Abstract: Monogeneans are the parasites mostly found on the body surface and gills of fish and can cause large losses in farmed fish. Some studies demonstrate elevated parasitic levels causing hematological alterations. But few of them relate the effects of parasitism on the hematology and histopathology of native freshwater farmed fish. This study evaluated the host-parasite relationship in pacu (Piaractus mesopotamicus) parasitized by the monogenean Anacanthorus penilabiatus. Hematological and parasitological assessments were obtained in 60 fish captured in a fish farm located in Dourados, State of Mato Grosso do Sul, Central Brazil. Fish were analyzed in different categories of parasite number: class I (n=13; 0-200 parasites), class II (n=17; 201-1200 parasites); class III (n=7; 1201-2200 parasites); and class IV (n=23; more than 2200 parasites per host). The highest levels of parasitism caused significant decrease (p<0.05) in the hematocrit, red blood cells (RBC), mean hemoglobin concentration (MCHC) and basophils number. Thrombocytes, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC), monocytes, eosinophils, neutrophils and LG-PAS did not present significant difference among the parasitic levels. In contrast, increased number of total leukocytes and lymphocytes were found in highly-parasitized fish. A positive linear correlation (p<0.01) was found between the amount of parasites and fish weight. Histopathology revealed severe hyperplasia, sub-epithelial edema, fusion of the secondary lamellae, focal and multifocal necrosis in highly parasitized fish. Resumo: Parasitos Monogenea são principalmente encontrados na superfície corporal e brânquias dos peixes, e podem acarretar grandes perdas em pisciculturas. Alguns estudos demonstram que elevados níveis de infestação parasitária podem alterar os parâmetros sanguíneos. Porém, poucos estudos se direcionam a esclarecer os efeitos do parasitismo sobre as características hematológicas em peixes nativos. Este estudo avaliou a relação parasito-hospedeiro em pacu (Piaractus mesopotamicus) parasitado pelo monogenético Anacanthorus penilabiatus. Avaliações hematológicas e parasitológicas foram obtidas de 60 peixes capturados de uma piscicultura localizada em Dourados, Estado de Mato Grosso do Sul (MS), Brasil Central. Os peixes foram divididos em diferentes categorias de número de parasitos: classe I (n=13; 0-200 parasitos), classe II (n=17; 201-1200 parasitos); classe III (n=7; 1201-2200 parasitos); e classe IV (n=23; mais que 2200 parasitos por hospedeiro). Os níveis mais elevados de parasitismo causaram diminuição significativa (p<0.05) no hematócrito, eritrócitos (RBC), concentração de hemoglobina corpuscular média (CHCM) e número de basófilos. Trombócitos, volume corpuscular médio (VCM), concentração de hemoglobina corpuscular media (CHCM), monócitos, eosinófilos, neutrófilos e LG-AS não apresentaram diferença significativa entre os níveis de parasitismo. Em contraste, o aumento do número de leucócitos totais e linfócitos foram encontrados em peixes altamente parasitados. Houve correlação linear positiva entre a quantidade de parasitos e o peso dos peixes. O exame histopatológico revelou severa hiperplasia, edema sub-epitelial, fusão das lamelas secundárias, necroses focal e multifocal em peixes altamente parasitados. MenosAbstract: Monogeneans are the parasites mostly found on the body surface and gills of fish and can cause large losses in farmed fish. Some studies demonstrate elevated parasitic levels causing hematological alterations. But few of them relate the effects of parasitism on the hematology and histopathology of native freshwater farmed fish. This study evaluated the host-parasite relationship in pacu (Piaractus mesopotamicus) parasitized by the monogenean Anacanthorus penilabiatus. Hematological and parasitological assessments were obtained in 60 fish captured in a fish farm located in Dourados, State of Mato Grosso do Sul, Central Brazil. Fish were analyzed in different categories of parasite number: class I (n=13; 0-200 parasites), class II (n=17; 201-1200 parasites); class III (n=7; 1201-2200 parasites); and class IV (n=23; more than 2200 parasites per host). The highest levels of parasitism caused significant decrease (p<0.05) in the hematocrit, red blood cells (RBC), mean hemoglobin concentration (MCHC) and basophils number. Thrombocytes, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC), monocytes, eosinophils, neutrophils and LG-PAS did not present significant difference among the parasitic levels. In contrast, increased number of total leukocytes and lymphocytes were found in highly-parasitized fish. A positive linear correlation (p<0.01) was found between the amount of parasites and fish weight. Histopathology revealed severe hyperplasia, s... Mostrar Tudo |
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Thesagro: |
Hematologia; Histologia; Pacu; Parasitismo; Parasito de animal; Piscicultura. |
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Thesaurus Nal: |
Fish diseases; Parasitoses; Piaractus mesopotamicus. |
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Categoria do assunto: |
H Saúde e Patologia
V Taxonomia de Organismos |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/115186/1/02-FINALIZADO-bjb09513.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/117493/1/2014AP35.pdf
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Marc: |
LEADER 04288naa a2200301 a 4500
001 2004960
005 2015-01-09
008 2014 bl uuuu u00u1 u #d
100 1 $aJERÔNIMO, G. T.
245 $aHaematological and histopathological analysis in South American fish Piaractus mesopotamicus parasitized by monogenean (Dactylogyridae).$h[electronic resource]
260 $c2014
520 $aAbstract: Monogeneans are the parasites mostly found on the body surface and gills of fish and can cause large losses in farmed fish. Some studies demonstrate elevated parasitic levels causing hematological alterations. But few of them relate the effects of parasitism on the hematology and histopathology of native freshwater farmed fish. This study evaluated the host-parasite relationship in pacu (Piaractus mesopotamicus) parasitized by the monogenean Anacanthorus penilabiatus. Hematological and parasitological assessments were obtained in 60 fish captured in a fish farm located in Dourados, State of Mato Grosso do Sul, Central Brazil. Fish were analyzed in different categories of parasite number: class I (n=13; 0-200 parasites), class II (n=17; 201-1200 parasites); class III (n=7; 1201-2200 parasites); and class IV (n=23; more than 2200 parasites per host). The highest levels of parasitism caused significant decrease (p<0.05) in the hematocrit, red blood cells (RBC), mean hemoglobin concentration (MCHC) and basophils number. Thrombocytes, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC), monocytes, eosinophils, neutrophils and LG-PAS did not present significant difference among the parasitic levels. In contrast, increased number of total leukocytes and lymphocytes were found in highly-parasitized fish. A positive linear correlation (p<0.01) was found between the amount of parasites and fish weight. Histopathology revealed severe hyperplasia, sub-epithelial edema, fusion of the secondary lamellae, focal and multifocal necrosis in highly parasitized fish. Resumo: Parasitos Monogenea são principalmente encontrados na superfície corporal e brânquias dos peixes, e podem acarretar grandes perdas em pisciculturas. Alguns estudos demonstram que elevados níveis de infestação parasitária podem alterar os parâmetros sanguíneos. Porém, poucos estudos se direcionam a esclarecer os efeitos do parasitismo sobre as características hematológicas em peixes nativos. Este estudo avaliou a relação parasito-hospedeiro em pacu (Piaractus mesopotamicus) parasitado pelo monogenético Anacanthorus penilabiatus. Avaliações hematológicas e parasitológicas foram obtidas de 60 peixes capturados de uma piscicultura localizada em Dourados, Estado de Mato Grosso do Sul (MS), Brasil Central. Os peixes foram divididos em diferentes categorias de número de parasitos: classe I (n=13; 0-200 parasitos), classe II (n=17; 201-1200 parasitos); classe III (n=7; 1201-2200 parasitos); e classe IV (n=23; mais que 2200 parasitos por hospedeiro). Os níveis mais elevados de parasitismo causaram diminuição significativa (p<0.05) no hematócrito, eritrócitos (RBC), concentração de hemoglobina corpuscular média (CHCM) e número de basófilos. Trombócitos, volume corpuscular médio (VCM), concentração de hemoglobina corpuscular media (CHCM), monócitos, eosinófilos, neutrófilos e LG-AS não apresentaram diferença significativa entre os níveis de parasitismo. Em contraste, o aumento do número de leucócitos totais e linfócitos foram encontrados em peixes altamente parasitados. Houve correlação linear positiva entre a quantidade de parasitos e o peso dos peixes. O exame histopatológico revelou severa hiperplasia, edema sub-epitelial, fusão das lamelas secundárias, necroses focal e multifocal em peixes altamente parasitados.
650 $aFish diseases
650 $aParasitoses
650 $aPiaractus mesopotamicus
650 $aHematologia
650 $aHistologia
650 $aPacu
650 $aParasitismo
650 $aParasito de animal
650 $aPiscicultura
700 1 $aPÁDUA, S. B. de
700 1 $aBAMPI, D.
700 1 $aGONÇALVES, E. L. T.
700 1 $aGARCIA, P.
700 1 $aISHIKAWA, M. M.
700 1 $aMARTINS, M. L.
773 $tBrazilian Journal of Biology$gv. 74, 2014.
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Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
11/02/2021 |
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Data da última atualização: |
11/02/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CURTO, R. De A.; MATTOS, P. P. de; BRAZ, E. M.; PÉLLICO NETTO, S. |
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Afiliação: |
Rafaella De Angeli Curto, Universidade Federal Rural do Rio de Janeiro; PATRICIA POVOA DE MATTOS, CNPF; EVALDO MUNOZ BRAZ, CNPF; Sylvio Péllico Netto, UFPR. |
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Título: |
Growth and retrospective analysis of competition in an overstocked stand of Araucaria angustifolia. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 483, 118766, Mar. 2021. 10 p. |
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DOI: |
https://doi.org/10.1016/j.foreco.2020.118766 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to recover growth patterns in an over-stocked stand of trees, using a stand of Araucaria angustifolia as a case study to develop an understanding of tree development over the long term. This will be useful in planning silvicultural intervention and in the management of new plantation of this species. An overstocked stand of Araucaria angustifolia (Bertol.) Kuntze was evaluated in Campo Largo, Paran´a, Brazil, in the National Forest of Açungui. At the time of the study, it was 65 years old and had been through a single thinning. The area was sampled using circle plots defined by a modified Prodan method, using 46 trees in three development classes (DC) were defined as sampling plot centers: DC-1 (10 ? dbh < 30 cm), DC-2 (30 ? dbh < 50 cm) and DC-3 (50 ? dbh < 70 cm). Fourteen disc samples were obtained from each plot center tree and increment core samples were obtained from competing trees, totalizing in 296 trees sampled. The trees presented similar increment in the first 5 years. At 10 years the DC-3 trees presented higher growth than the others, indicating when the first thinning should be performed. The two smaller classes (DC-1 and DC-2) presented growth differentiation only after 20 years, suggesting that thinning during this period could have been successful. The DC-3 trees showed an increment greater than twice of that observed in DC-1 trees for those trees in the diametric class of 10 to 20 cm. The average increment stabilized even in the largest trees (DC-3) from 40 cm in dbh. The suggested procedure, using a competition index and dendrochronological analysis, allowed for the identification of growth patterns in overstocked stands. Analysis using dendrochronology and competition index allowed better understanding of the growth rate of an unmanaged stand. In our case study, these patterns made it possible to identify the correct period for the first thinning. These results will provide a useful basis for management of future A. angustifolia plantations. MenosThe objective of this work was to recover growth patterns in an over-stocked stand of trees, using a stand of Araucaria angustifolia as a case study to develop an understanding of tree development over the long term. This will be useful in planning silvicultural intervention and in the management of new plantation of this species. An overstocked stand of Araucaria angustifolia (Bertol.) Kuntze was evaluated in Campo Largo, Paran´a, Brazil, in the National Forest of Açungui. At the time of the study, it was 65 years old and had been through a single thinning. The area was sampled using circle plots defined by a modified Prodan method, using 46 trees in three development classes (DC) were defined as sampling plot centers: DC-1 (10 ? dbh < 30 cm), DC-2 (30 ? dbh < 50 cm) and DC-3 (50 ? dbh < 70 cm). Fourteen disc samples were obtained from each plot center tree and increment core samples were obtained from competing trees, totalizing in 296 trees sampled. The trees presented similar increment in the first 5 years. At 10 years the DC-3 trees presented higher growth than the others, indicating when the first thinning should be performed. The two smaller classes (DC-1 and DC-2) presented growth differentiation only after 20 years, suggesting that thinning during this period could have been successful. The DC-3 trees showed an increment greater than twice of that observed in DC-1 trees for those trees in the diametric class of 10 to 20 cm. The average increment stabilized even in t... Mostrar Tudo |
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Palavras-Chave: |
Dendrocronologia; Growth pattern; Manejo florestal; Padrão de crescimento; Thinning. |
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Thesagro: |
Araucária Angustifólia; Espécie Nativa; Pinheiro do Paraná. |
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Thesaurus NAL: |
Dendrochronology; Forest management. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02944naa a2200289 a 4500
001 2129986
005 2021-02-11
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foreco.2020.118766$2DOI
100 1 $aCURTO, R. De A.
245 $aGrowth and retrospective analysis of competition in an overstocked stand of Araucaria angustifolia.$h[electronic resource]
260 $c2021
520 $aThe objective of this work was to recover growth patterns in an over-stocked stand of trees, using a stand of Araucaria angustifolia as a case study to develop an understanding of tree development over the long term. This will be useful in planning silvicultural intervention and in the management of new plantation of this species. An overstocked stand of Araucaria angustifolia (Bertol.) Kuntze was evaluated in Campo Largo, Paran´a, Brazil, in the National Forest of Açungui. At the time of the study, it was 65 years old and had been through a single thinning. The area was sampled using circle plots defined by a modified Prodan method, using 46 trees in three development classes (DC) were defined as sampling plot centers: DC-1 (10 ? dbh < 30 cm), DC-2 (30 ? dbh < 50 cm) and DC-3 (50 ? dbh < 70 cm). Fourteen disc samples were obtained from each plot center tree and increment core samples were obtained from competing trees, totalizing in 296 trees sampled. The trees presented similar increment in the first 5 years. At 10 years the DC-3 trees presented higher growth than the others, indicating when the first thinning should be performed. The two smaller classes (DC-1 and DC-2) presented growth differentiation only after 20 years, suggesting that thinning during this period could have been successful. The DC-3 trees showed an increment greater than twice of that observed in DC-1 trees for those trees in the diametric class of 10 to 20 cm. The average increment stabilized even in the largest trees (DC-3) from 40 cm in dbh. The suggested procedure, using a competition index and dendrochronological analysis, allowed for the identification of growth patterns in overstocked stands. Analysis using dendrochronology and competition index allowed better understanding of the growth rate of an unmanaged stand. In our case study, these patterns made it possible to identify the correct period for the first thinning. These results will provide a useful basis for management of future A. angustifolia plantations.
650 $aDendrochronology
650 $aForest management
650 $aAraucária Angustifólia
650 $aEspécie Nativa
650 $aPinheiro do Paraná
653 $aDendrocronologia
653 $aGrowth pattern
653 $aManejo florestal
653 $aPadrão de crescimento
653 $aThinning
700 1 $aMATTOS, P. P. de
700 1 $aBRAZ, E. M.
700 1 $aPÉLLICO NETTO, S.
773 $tForest Ecology and Management$gv. 483, 118766, Mar. 2021. 10 p.
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