Pedro Hollanda Carvalho

Federal University of Rio de Janeiro - NUPEM

Assessing genetic diversity within species is key for conservation strategies in the context of human-induced biotic changes. This is important in marine systems, where many species remain undescribed while being overfished, and conflicts between resource-users and conservation agencies are common. Combining niche modelling with population genomics...

Resumo: A cidade de Macaé representa um belo modelo da estrutura de ocupação do espaço para municípios costeiros do Brasil sob o domínio da Mata Atlântica. Isso ocorre pelo fato de ter acompanhado todos os ciclos de desenvolvimento e conquista desse território. Macaé também revela a existência de ciclos econômicos, determinados por suas riquezas na...

Sperm storage in females (SS) has been reported in Chondrichthyans species, and involves the prolonged maintenance of viable sperm after mating events, prior to egg fertilization. Along with multiple paternity (MP – female producing Offspring of multiple males within the same litter), SS has been hypothesized to be related to the increased reproduc...

A série de lagoas que integram o Sítio PELD-RLaC localiza-se na planície costeira do Norte Fluminense. Nos últimos 20 anos, a intensa variação no regime de precipitação regional determinou sequências de anos com precipitação acumulada abaixo e acima das médias históricas, promovendo eventos de dessecamento e conexão hidrológica entre lagoas e de al...

Tetraodontidae is the most speciose family of Tetraodontiformes and is represented by fish popularly known as pufferfishes. They are characterized by modified jaws with four dental plates and the ability to inflate their bodies. Tetraodontids are distributed throughout the world and have a wide range of habitat use. One of its genera, Sphoeroides,...

Multiple paternity behavior (MP) has been recorded for seven elasmobranch orders. It remains unclear how this common behavior evolved and whether it occurs in all elasmobranchs or in certain lineages. Although MP may provide genetic benefits, elasmobranchs display an aggressive courtship behavior and females may become severely wounded, making mult...

Long-term ecological studies have been developed in a Quaternary coastal plain in Southeastern Brazil (RLaC site), comprising the largest protected restinga remnant (144km2) in South America. Restingas are sandy areas spread along the Brazilian coast comprising a mosaic of open woodland vegetation, spots covered by dry or wet forests, swales and wa...

Paralichthys species have high commercial value and constitute a resource for demersal fisheries in the Southwestern Atlantic Ocean. Although six species have been described based on morphological characters for the Uruguayan and Argentinean waters, only the presence of three species is accepted, being their distribution still uncertain. Genetic to...

Hypostomus nigrolineatus, new species, is described from the rio Jequitinhonha and rio Pardo basins. It is diagnosed by having dark spots over head, anterior portion of trunk and fins, and dark longitudinal stripes on flanks on posterior portion of body; incomplete scutelet coverage on abdomen in young specimens; 9-37 teeth on premaxilla, and 10-39...

La laguna Imboassica (estado de Rio de Janeiro), tuvo de 1993 a 2001 cuatro aberturas del cordón de arena que la separa del mar. Durante este perí­­odo fueron realizadas 28 colectas de peces, siendo 55.6% de las especies de valor comercialclasificada en guildas funcionales como: residentes en lagunas costeras (RLC), marina-dependientes (MD), visita...

The upper Paraná River system (UP) is a highly diverse biogeographic province for freshwater fishes, but little is known about processes which shaped that diversity. This study describes the phylogeographic pattern in Hypostomus ancistroides, a suckermouth catfish species that is widespread in the UP and also reported from the adjoining Ribeira do...

Two new species of Hypostomus are described from the middle and upper rio Negro in Brazil. They are assigned to the Hypostomus cochliodon group (sensu Armbruster, 2003) by possessing few spoon-shaped teeth, and dentary angle averaging less than 80º. Hypostomus kopeyaka is described from the rio Tiquié, a tributary of the rio Uaupés, upper rio Negro...

The genus Listrura, Glanapteryginae, currently comprises six valid species of small and elongated trichomycterid catfishes that inhabit coastal plains of Southern and Southeastern Brazil. As primarily fossorial dwellers, species of the genus display unusual morphological adaptations and restricted habitats, which make these fishes particularly susc...

Two new species of Hypostomus are described from the middle and upper rio Negro in Brazil. They are assigned to the Hypostomus cochliodon group (sensu Armbruster, 2003) by possessing few spoon-shaped teeth, and dentary angle averaging less than 80°. Hypostomus kopeyaka is described from the rio Tiquié, a tributary of the rio Uaupés, upper rio Negro...

INTRODUÇÃO Em 1982, o pesquisador Francisco A. Esteves se encantou com a beleza das lagoas costeiras do norte fluminense e, desafiado pelo desconhecimento dos processos ecológicos que regiam esses ecossistemas, passou a publicar os primeiros estudos sobre as lagoas de Macaé (Esteves et al., 1983, 1984, 1988). Por seu estímulo e com apoio logístico...

Five new species of the Hypostomus cochliodon group (Siluriformes: Loricariidae) from the middle and lower Amazon System. -Five new species of Hypostomus from the cochliodon group are described from the middle and lower Amazonian Basin. Data for a population of H. hemico-chliodon Armbruster, 2003 from Rio Branco (Roraima, Brazil) and comments on th...

Temporal variation of fish community richness in coastal lagoons of the Restinga de Jurubatiba National Park, Rio de Janeiro, Brazil. Fish species were sampled in August/2001 (dry season) and February/2002 (rainy season) from seven coastal lagoons of the Restinga de Jurubatiba National Park, located in a "restinga" (sandy coastal plain vegetation)...