Tiago H. S. Pires

Tiago H. S. Pires
Instituto Nacional de Pesquisas da Amazônia | inpa · Coordenação de Biodiversidade (CBIO)

Dr.

About

30
Publications
8,510
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262
Citations
Introduction
I am mostly interested in speciation and the contribution of natural selection to it. My current focus is on the potential contribution of sexual and social communication on reproductive isolation. I am not bound to any specific technique, but for the most part I quantify distance-based metrics (using a custom tracking system based on R) and movements during contests and courtship. There's very little I find uninteresting and I contribute to studies on population ecology, organismal response to climate change, phylogenetic systematics and life-history evolution.
Additional affiliations
May 2020 - present
INPA - National Institute for Amazonian Research
Position
  • Research Associate

Publications

Publications (30)
Article
The reliable identification of the fish species found in Amazonian streams requires a considerable investment of both time and resources, which often hampers the biodiversity pattern mapping and conservation planning. This problem can be overcome using biological surrogates such taxonomic families, this would reduce the number of fish to be identif...
Article
Abnormal hydroclimatic years in the Amazon have been increasingly frequent in the last two decades, creating more prolonged droughts and severe floods. These events are expected to impact organismal phenology, including seasonal reproduction of fish. Droughts are also expected to increase fish mortality and vulnerability to fishing. However, empiri...
Article
Reproductive behaviour is often targeted by behavioural parasitism due to its high energy costs and direct relationship with fitness. Courtship behaviour represents a substantial amount of the investment in reproduction, as it usually requires conspicuous movements that are energetically demanding and increase predation risk. Here, we present an al...
Article
Full-text available
Due to the importance of camouflage to avoid detection by predators, predation pressure can cause coupled evolution of skin colour and preference for substrate colour. Individuals can choose regions where the background makes their skin colour less noticeable (crypsis) or where it accentuates warning coloration (aposematism). In such scenario, indi...
Article
Direct field observation constitutes an important source of information on life history and behavior of stream fish. Unfortunately, information gathered from direct field observations are often limited and thus may fail to provide robust testing for the causation of biological phenomena. Here, we bring concepts that form the theoretical foundation...
Article
• Understanding the factors that regulate temporal changes in population size is a core aspiration in ecology given the importance of population stability on the maintenance of species interactions, effects on local communities, the stability of ecosystems, and for biodiversity conservation. Understanding temporal trends in population size can supp...
Article
A major component of Darwin's formulation of sexual selection theory is whether mate choice can contribute to the evolution of cognitive abilities. Although a correlation between cognition and attractive traits has commonly been reported, the processes that generate such associations remain elusive. Here, we investigated female preference, neophobi...
Article
Full-text available
The Amazon has the highest richness of freshwater organisms in the world, which has led to a multitude of hypotheses on the mechanisms that generated this biodiversity. However, most of these hypotheses focus on the spatial distance of populations, a framework that fails to provide an explicit mechanism of speciation. Ecological conditions in Amazo...
Technical Report
https://www.epe.gov.br/sites-pt/publicacoes-dados-abertos/publicacoes/PublishingImages/Paginas/Forms/Publicaes/EAAS%20Solim%c3%b5es%20-%20vers%c3%a3o%20completa.pdf
Article
Full-text available
The Amazon Basin is an unquestionable biodiversity hotspot, containing the highest freshwater biodiversity on earth and facing off a recent increase in anthropogenic threats. The current knowledge on the spatial distribution of the freshwater fish species is greatly deficient in this basin, preventing a comprehensive understanding of this hyper-div...
Article
Full-text available
Several organisms match their skin color to the prevalent background color, granting crypsis against predators. The rate at which body color changes occur varies among organisms as a result of physiological constraints and adaptation to variation in contrasts between objects and the environmental background. Faster darkening of body color is favore...
Article
Full-text available
In the absence of constraints, preference for larger mates is expected to evolve, as larger individuals are typical of higher potential fitness. Large females are often more fecund and carry larger eggs (which result in higher number and better quality of offspring), whereas large males usually have more conspicuous ornaments and are better at defe...
Article
Full-text available
Natural selection often shapes visual perception with respect to the lighting environment. For organisms that rely on visual communication for mating, environmental backscatter and bias in wavelength transmission affect the exchange of visual signals, which can mediate major changes in sexually selected traits. Based on the lighting environment, Am...
Article
Full-text available
Following Alfred Russel Wallace, Amazonian freshwaters are classified into three types: black, white, and clear. Such waters have been demonstrated to affect adaptation and gene flow of the aquatic fauna. However, this classification focuses on large rivers and fails to acknowledge the importance of small forest streams that flow through upland ter...
Article
Full-text available
Seasonal environments favor the evolution of capital breeding, whereby reproduction uses surplus energy from resources acquired during an earlier period. Consequently, reproductive effort in capital breeders is expected to depend on traits associated with energy storage rather than environmental conditions at the time of reproduction. Based on a 15...
Article
Full-text available
Alfred Russel Wallace proposed classifying Amazon rivers based on their color and clarity: white, black and clear water. Wallace also proposed that black‐waters could mediate diversification and yield distinct fish species. Here, we bring evidence of speciation mediated by water type in the sailfin tetra (Crenuchus spilurus), a fish whose range enc...
Article
Full-text available
Combined effects of climate change and deforestation have altered precipitation patterns in the Amazon. This has led to changes in the frequency of extreme events of flood and drought in recent decades and in the magnitude of the annual flood pulse, a phenomenon that influences virtually all aspects of river-floodplain ecosystem dynamics. Analysis...
Article
Full-text available
Current broad geographical distributions of species can only exist because individuals dispersed from their natal sites. The Amazon’s sailfin tetra Crenuchus spilurus has a geographical range of over 3 million km2, an area 5.7 times larger than France, which includes regions of very distinct abiotic and biotic conditions. What traits may aid in exp...
Article
Full-text available
Studies about fish assemblages in Brazilian streams have grown in recent years, however, it remains unclear whether this increase is followed by increments in the diversity of addressed topics and theoretical frameworks adopted by researchers. We performed a systematic search for Brazilian studies on stream fish assemblages recording study region,...
Article
Full-text available
The cichlid Mesonauta festivus is common and abundant among macrophyte stands along a large geographical range of the Amazonas and Paraná-Paraguay basins, in South America. This broad geographical range highlights the species’ dispersion ability, which can be attributed to specific biological and behavioral traits. However, the dispersion ability d...
Poster
Full-text available
This work was presented during the Semana da Ciência e Tecnologia [Week of Science and Technology, (21-10-2013 to 02-11-2013)]. The group has also developed activities of visiting to the research group laboratory, as well as, a puppet theatre activity about the life cycle of Semaprochilodus insignis, whose script was adapted from the children's st...
Data
The group has developed activities of visiting of the research group laboratory, as well as, a puppet theatre activity about the life cycle of Semaprochilodus insignis, whose script was adapted from the children's story "O Pequeno Pinguim" [The little penguin] written by A. J. Wood. A poster regarding the life cycle of Semaprochilodus was also pres...
Chapter
Full-text available
A família Characidae é a mais diversa da ordem Characiformes, compreendendo 1125 espécies atualmente consideradas válidas (não incluindo Acestrorhynchidae e Cynodontidae, consideradas subfamílias de Characidae por Mirande, 2010). Characidae também é a família de Characiformes mais amplamente distribuída, com representantes ocorrendo desde o sul dos...
Article
Full-text available
The clingfish Gobiesox barbatulus shows nocturnal feeding activity, spending most part of the day stationary and adhered to the inferior part of stones. To feed, this species uses the sit-and-wait and particulate feeding tactics. It shows a carnivorous feeding habit mostly consuming small benthic crustaceans. It can move in two ways: (1) "stone-by-...

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Projects

Projects (2)
Project
This is a long-term ecological project (PELD) that aims to uncover the aquatic biodiversity in the Amazonian headwater streams (regionally called "igarapés"). The project has more than 15 years of life and represents a great contribution to the knowledge of natural history and ecology of fish and other aquatic organisms in a historically neglected ecosystem.