Waldo Troy

Waldo Troy
State University of Mato Grosso | UNEMAT · Faculdade de Ciências Biológicas, Agrárias e da Saúde (Tangará da Serra)

Doutor

About

18
Publications
4,248
Reads
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187
Citations
Citations since 2016
8 Research Items
154 Citations
20162017201820192020202120220510152025
20162017201820192020202120220510152025
20162017201820192020202120220510152025
20162017201820192020202120220510152025
Introduction
Waldo Troy currently works at the Faculdade de Ciências Agrárias, Biológicas, Engenharia e da Saúde (Tangará da Serra), State University of Mato Grosso. Waldo does research in Fish Genetics and Ichthyology. Their current project is 'Citogenética comparativa de Hoplias aimara da bacia do rio Tapajós'.
Additional affiliations
May 2004 - present
State University of Mato Grosso
Position
  • Professor

Publications

Publications (18)
Article
Full-text available
Erythrinus erythrinus presents extensive karyotypic diversity, with four karyomorphs (A–D) differing in the number of chromosomes, karyotype structure or sex chromosomes systems. Karyomorph A has 2n = 54 chromosomes in males and females without heteromorphic sex chromosomes, while karyomorph C has 2n = 52 chromosomes in females and 2n = 51 chromoso...
Article
Full-text available
Hyphessobrycon rutiliflavidus, new species, is described from the upper rio Paraguai in Cuiab<, State of Mato Grosso, Brazil. The new species differs from all other congeners by the following combination of characters: black humeral spot, slightly diffuse at its tips, and caudal-peduncle blotch present; midlateral body stripe conspicuous in its pos...
Article
Full-text available
Auchenipteridae is divided in two subfamilies, Centromochlinae and Auchenipterinae. Centromochlinae has 31 valid species, from which 13 are included in the genus Tatia Miranda Ribeiro, 1911. Among these, Tatia jaracatia Pavanelli & Bifi, 2009 and Tatia neivai (Ihering, 1930) are the only two representative species from the Paraná-Paraguay basins. T...
Article
Full-text available
Erythrinus erythrinus, a Neotropical fish species of the Erythrinidae family, has a wide distribution in South America. Previous cytogenetic analysis showed that this species presents extensive karyotype diversity, with 4 karyomorphs (A-D) described herein. This study investigated the karyotypic structure of 2 new populations of E. erythrinus from...
Article
Full-text available
AbstractTwo new species of Hisonotus are described from the rio Paraná-Paraguay basin in Brazil. The most remarkable features of the new species are the odontodes forming longitudinally aligned rows (one odontode after the other, but not necessarily forming parallel series) on the head and trunk (vs. odontodes not forming longitudinally aligned row...
Article
Full-text available
The cytogenetic characteristics of five fish species of the Moenkhausia are described, based on the analysis of specimens collected in different headwater. All the species analyzed presented 2n=50 chromosomes. The C-banding revealed a similar distribution pattern of heterochromatic blocks in all the species, except Moenkhausia nigromarginata. The 5...
Article
Full-text available
A new species of Moenkhausia is described from tributaries of the upper rio Sepotuba, Paraguay basin, Brazil. The new species is distinguished from its congeners by a combination of characters, including an inconspicuous oval-shaped vertically elongated humeral blotch, extending horizontally from third through five lateral-line scales, and vertical...
Article
Hypostomus latirostris was originally described by Regan (1904) from "River Jungada [= rio Jangada], Matto Grosso and Goyaz"; however, the species is rarely mentioned in taxonomic works on Hypostomus from Paraguay. Herein, the two syntypes of Plecostomus latirostris were examined showing critical differences between them. After the analysis of a la...
Article
Although fishes exhibit the greatest biodiversity among the vertebrates, a large percentage of this fauna is still underexplored on evolutionary cytogenetic questions, particularly the miniature species. The Lebiasinidae family is a particular example for such case. This study is the first one presenting differential cytogenetic methods, such as C-...
Article
Full-text available
The genus Zungaro contains some of the largest catfish in South America. Two valid species are currently recognized: Zungaro jahu, inhabiting the Paraná and Paraguay basins, and Zungaro zungaro, occurring in the Amazonas and Orinoco basins. Analysing Zungaro specimens from the Amazonas, Orinoco, Paraguay and Paraná basins, based on the sequencing o...
Article
Full-text available
Ichthyofauna diversity of headwaters streams in landscapes anthropogenic in the Upper Paraguay basin. The advance of the agricultural frontier is one of the biggest threats to the communities' structure of the fi sh assemblages in headwaters streams. The infl uence of land use and occupation on the fi sh assemblages structure in headwater streams w...
Article
Full-text available
Characterizing the abundance and genomic distribution of repetitive DNAs provides information on genome evolution, especially regarding the origin and differentiation of sex chromosomes. Triportheus fishes offer a useful model to explore the evolution of sex chromosomes, since they represent a monophyletic group in which all species share a ZZ/ZW s...
Article
Full-text available
Monophyly of the genus Leporinus (Characiformes: Anostomidae) was tested by sequencing and analysing a total of 4732 bp, including two mitochondrial [cytochrome oxidase subunit 1 (CO1) and cytochrome b (Cytb)] and three nuclear [myosin heavy chain 6 cardiac muscle alpha (Myh6), recombination activating gene 1 (RAG1) and recombination activating gen...
Article
Full-text available
Cheirodontinae constitutes a group of 17 genera and 55 species still poorly studied cytogenetically, being that most data available in the literature is for the Alto Paraná basin. In this study Odontostilbe pequira, Serrapinnus kriegi, Serrapinnus calliurus and Serrapinnus microdon from Alto Paraguay basin was characterized cytogenetically. The mod...
Article
Hyphessobrycon rutiliflavidus, new species, is described from the upper rio Paraguai in Cuiab<, State of Mato Grosso, Brazil. The new species differs from all other congeners by the following combination of characters: black humeral spot, slightly diffuse at its tips, and caudal-peduncle blotch present; midlateral body stripe conspicuous in its pos...
Article
Full-text available
RESUMO Foram realizadas determinações limnológicas durante 24horas, em intervalos de uma hora, no período hidrológico de estiagem, na Baía dos coqueiros, Pantanal Mato-grossense, foram medidas as variáveis, transparência da água, temperatura do ar e da água, pH, alcalinidade, condutividade elétrica, oxigênio dissolvido, totais de sólidos dissolvido...

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Projects (2)
Project
Este projeto visa caracaterizar os cromossomos de amostras de Hoplias aimara (Characiformes; Erythrinidae) de rios de cabeceira da bacia do Tapajós no Estado de Mato Grosso, Brasil.