Emiko K. Resende- PhD
- Brazilian Agricultural Research Corporation (EMBRAPA)
Emiko K. Resende
- PhD
- Brazilian Agricultural Research Corporation (EMBRAPA)
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81
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July 1985 - present
Publications
Publications (81)
Pleistocene climate changes were major historical events that impacted South American biodiversity. Although the effects of such changes are well-documented for several biomes, it is poorly known how these climate shifts affected the biodiversity of the Pantanal floodplain. Fish are one of the most diverse groups in the Pantanal floodplains and can...
In recent years, the genetic monitoring of broodstocks in fish farming has been greatly highlighted due to its importance in the management and improvement of their production and conservation. Current study evaluates the genetic diversity of four Tambaqui broodstocks (Colossoma macropomum) in the state of Rondônia (Brazil) and discusses activities...
Fish farming is a significant part of the total aquaculture production, thereby, it is very important develop methods and strategies that maximize productivity per area used becomes essential. Fundamentally, the genetic improvement of the population proceeds through determination of a selection criterion that meets the current production system, as...
O objetivo deste trabalho foi avaliar a diversidade genética de três estoques de tambaqui (Colossoma macropomum). Foram utilizados oito iniciadores para analisar 67 indivíduos, coletados de três pisciculturas nos municípios: Porto Real do Colégio – Alagoas (PRC), Araujo 1 – Sergipe (AR1) e Araujo 2 – Sergipe (AR2), Brasil. Foram encontradas diferen...
Was evaluated the pattern of growth among females and males of tambaqui by Gompertz nonlinear regression model. Five traits of economic importance were measured on 145 animals during the three years, totaling 981 morphometric data analyzed. Different curves were adjusted between males and females for body weight, height and head length and only one...
The objective of this work was to estimate the (co)variance and the genetic parameters for weight and average daily gain from two national generations of the GIFT strain of the Nile tilapia (Oreochromis niloticus). We evaluated 3918 fish from two generations of the breeding program from the Universidade Estadual de Maringá, Northwestern Paraná. Uni...
The Pantanal Biosphere Reserve contains one of the highest concentration of animal species in the Neotropics, including about 300 fish species living in diverse environments associated with wetlands in the upper Paraguai River basin. This biome spans portions of Bolivia, Brazil and Paraguay and includes the Parque Nacional do Pantanal Matogrossense...
Este estudo teve o objetivo de caracterizar a ictiofauna da planície de inundação bacia do baixo Rio Taquari
(Pantanal, MS) quanto à estrutura e diversidade de suas comunidades. Foram realizadas capturas em estações hídricas contrastantes em cinco estações de coleta de dados. Para as coletas de dados foram utilizadas redes de arrasto e tarrafas, o...
The objective of this work was to study the selection response for performance and morphometrics traits in Nile tilapias (Oreochromis niloticus) in different measurements of farming. The one-trait analysis was performed for all traits studied and the two-traits analysis, were associated with the daily total weight gain in four measurement among per...
Breeding values, the differences in responses to selection, the (co)variance components and genetic parameters of the morphometrics traits of Nile tilapia (O. niloticus) reared in cages were estimated. Morphometric and performance traits of 1824 animals were analyzed. The estimated heritability ranged from 0,08541 to 0,194 and the proportion of the...
O objetivo deste trabalho foi estimar as herdabilidades e a estrutura de correlações genéticas entre as características de desempenho de tilápia-do-nilo (Oreochromis niloticus) da linhagem GIFT, em diferentes estágios do ciclo de produção. As tilápias foram cultivadas em tanques-rede. Mediu-se ganho em peso diário total, peso vivo e ganho em peso d...
Breeding values, the differences in responses to selection, the (co)variance components and genetic parameters of the morphometrics traits of Nile tilapia (O. niloticus) reared in cages were estimated. Morphometric and performance traits of 1824 animals were analyzed. The estimated heritability ranged from 0,08541 to 0,194 and the proportion of the...
The conservation of semen may have its costs reduced when used within a certain period of time through cooling techniques. These techniques are alternatives to reproductive management in fish farms, optimizing fertilization of oocytes and ensuring satisfactory reproduction. The quality of the extenders is essential, since it guarantees the maintena...
No presente estudo estimou-se valores genéticos, as diferenças existentes nas respostas à seleção, os componentes de (co)variância e parâmetros genéticas de características morfométricas de tilápias do Nilo (O. niloticus), cultivados em sistema de tanques rede. Foram analisadas características morfométricas e de desempenho de 1824 animais. As estim...
O conhecimento ecológico de peixes de riachos brasileiros ainda possui lacunas. Apesar dos muitos estudos ictiológicos na Bacia do Alto Rio Paraná, poucos foram conduzidos em córregos da região Centro-Oeste, uma das mais ameaçadas pela expansão agropecuária. Este estudo é resultado da compilação dos dados de amostras obtidas em riachos da porção Oe...
O objetivo deste trabalho foi analisar a diversidade genética de três gerações da tilápia GIFT do Programa de Melhoramento Genético da Universidade Estadual de Maringá, utilizando o marcador RAPD. Foram utilizadas 180 amostras de nadadeira. Os sete primers utilizados produziram 91 fragmentos, dos quais 98,9% foram polimórficos. Observaram-se difere...
The objective of this study was to evaluate the genetic diversity of four broodstocks of tambaqui (Colossoma macropomum) from different regions of Brazil using RAPD markers. Ten primers were used to analyze 116individuals, collected from fish cultures of three municipalities in Brazil: Urupá, RO; Teixeirópolis, RO; Neópolis, SE; and Sorriso, MT. Di...
Pacu (Piaractus mesopotamicus) is an important fish species for professional and sport fisheries in the Alto-Paraguay Basin, located in the central western Brazil. In this study the D-loop control region of mtDNA sequence data was used to investigate genetic variability within and among populations of pacu. A total of 99 individuals were collected...
This paper describes eight polymorphic microsatellite loci of the large migratory catfish Jaú, Zungaro jahu, a threatened species in the Paraguay—Paraná River Basin, which includes the Brazilian wetland Pantanal system. The number
of detected alleles varied from 3 to 10, while observed and expected heterozygosity values ranged from 0.3182 to 0.8333...
The project aims at giving a technological upgrade to Brazilian aquaculture to attend the demands of the productive chain. The research focus in obtaining genetically improved fishes; in developing environmental friendly feeds of high zootechnical performance; and in implementing the integrated sanitary control in production systems. The adoption o...
The project aims at giving a technological upgrade to Brazilian aquaculture to attend the demands of the productive chain. The research focus in obtaining genetically improved fishes; in developing environmental friendly feeds of high zootechnical performance; and in implementing the integrated sanitary control in production systems. The adoption o...
The 'tucunaré', Cichla piquiti, an exotic Amazonian fish has become established along the left bank of the Paraguay River in the Pantanal. It was introduced by escaping from culture ponds in the Upper Piquiri River and spread downstream, along the lateral flooded areas of that river, continuing through the clear waters of the left bank of the Parag...
The riverine complex Paraguay-middle Parana-Rio de la Plata extends more than 3700 km southwards from its sources in the western hills of the Brazilian Shield to its discharge into the Rio de la Plata River. The high variety of habitats is reflected in the large diversity of its fish communities, which are dominated by characiform and siluriform fi...
Information regarding the reproductive cycle of commercially exploited fish species is extremely important for their appropriate management. The reproductive size of Pinirampus pirinampu (Spix, 1829) was determined for a population studied in the Pantanal wetlands of western Brazil. Samples were taken in September, October, and December 1997, and i...
Limnoperna fortunei (Bivalvia, Mitylidae) was introduced into South America in 1991 in the La Plata River (Argentina). It arrived in the ballast water of ships coming
from Asia, where this species is native. It was first observed in 1998 in the Paraguay River. Limnoperna was introduced into the Pantanal region as hull fouling of vessels using the P...
Results of a project within the Water for Food and Ecosystems Programme. The sanding up of Rio Taquari is a major problem, because of the nearly permanent inundation of a large area. Solving that problem is difficult as there is no coherent river management organisation
O Pantanal apresenta alta diversidade biológica e abundância de vida silvestre, onde foram identificadas até o presente 1.863 espécies de plantas superiores, 122 de mamíferos, 162 de répteis, 656 de aves e 264 de peixes. Os peixes desempenham papel fundamental enquanto componentes do ecossistema, participando da ciclagem de nutrientes e do fluxo de...
This chapter contrasts different approaches to assessment of the costs and benefits of the development of the Hidrovia, with emphasis on potential impacts on the Pantanal, and on implications for decision-making of using the information derived from these different approaches. We begin by illustrating the relationship of the flood/drought cycle, to...
Of a total of 101 fish species caught in the Lower Miranda River floodplain, 29 were omnivorous, 16 ichthyophagous, 12 herbivorous, 18 detritivorous, 8 zooplanktophagous, 7 insectivorous, 2 lepidophagous, 4 ichthyophagous/insectivorous and 4 zooplanktophagous/insectivorous. Almost half of the species belong to omnivorous and detritivorous trophic g...
Foi estudado o crescimento de matrinchã (Brycon sp.) e jaraqui (Semaprochilodus sp.) em sistema de policultivo em duas pequenas represas de igarapés de terra firme, nos arredores de Manaus, com superfícies de água de aproximadamente 6500 e 1500 m2 . As represas foram povoadas com alevinos capturados na natureza numa taxa de esfocagem de aproximadan...
The potential growth and production of "jaraquis" Semaprockilodus,spp in a "terra firme" stream impoundment with chemically poor waters was evaluated. The waster water from pig stys wasused as a surce 0f food and organic manure. During the. experimental period of 383 days at a stocking density of 1 fish/m2 the production obtained was 1277 Kg/ha. Th...
Resumo A tuvira é considerada a isca viva capturada e comercializada em maior número na região de Corumbá e Ladário. Perdas consideráveis são estimadas tanto na sua captura como no seu armazenamento. Exemplares capturados dessa região têm apresentado sintomas de doenças. Outros aparentemente saudáveis adoecem durante o transporte e armazenamento, c...
