João Valsecchi
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View article: Proximate composition of wild meats present in traditional food systems of the Brazilian Amazon
Proximate composition of wild meats present in traditional food systems of the Brazilian Amazon Open
The Amazon region, renowned for its rich biodiversity, is home to indigenous and riverside populations that maintain an intrinsic relationship with the forest, playing a crucial role in the local ecological balance. The diet of this popula…
View article: First Comprehensive Examination of the Molecular Phylogenetics of Saki Monkeys, Genus <i>Pithecia</i> Desmarest, 1804, Reveals an Unexpectedly Low Taxonomic Diversity
First Comprehensive Examination of the Molecular Phylogenetics of Saki Monkeys, Genus <i>Pithecia</i> Desmarest, 1804, Reveals an Unexpectedly Low Taxonomic Diversity Open
Saki monkeys ( Pithecia ) are found exclusively in the Amazon, ranging from the Guiana Shield in the east to the Andean foothills in the west. The taxonomy of this genus is complex due to indeterminate type localities, numerous synonyms, s…
View article: Strengthening Amazon conservation through community‐based voluntary patrolling
Strengthening Amazon conservation through community‐based voluntary patrolling Open
Globally, environmental crimes are a major threat to biodiversity and the livelihood of local populations. Community‐based protection of natural resources, which involves local people in surveillance and enforcement, is an important comple…
View article: Unprecedented Social-Ecological Impacts of the 2023 Extreme Drought in the Central Amazon
Unprecedented Social-Ecological Impacts of the 2023 Extreme Drought in the Central Amazon Open
While the 2023 record-breaking drought led to widespread social-ecological impacts across Amazonia, local impacts of such extreme events are rarely described in detail. Here we leverage a large interdisciplinary data collection related to …
View article: The genomic landscape of spider monkeys and northern muriquis from a conservation perspective
The genomic landscape of spider monkeys and northern muriquis from a conservation perspective Open
Background Most populations of spider monkeys ( Ateles ) and muriquis ( Brachyteles ), two Neotropical primate genera, are under severe anthropogenic threats. Yet, taxon-wide population-level studies leveraging their degree of endangerment…
View article: Traditional Territory in a Protected Area: Territorial Dynamics and Wildlife Management in the Amanã Sustainable Development Reserve, Amazonas, Brazil
Traditional Territory in a Protected Area: Territorial Dynamics and Wildlife Management in the Amanã Sustainable Development Reserve, Amazonas, Brazil Open
Implementing sustainable management strategies for common-use resources influences the territorialization processes of traditional peoples and communities. This article aims to provide historical context on the use of natural resources in …
View article: Impact of Quaternary Amazonian river dynamics on the diversification of uakari monkeys (genus <i>Cacajao</i>)
Impact of Quaternary Amazonian river dynamics on the diversification of uakari monkeys (genus <i>Cacajao</i>) Open
Aim The central and western Amazonia underwent several landscape changes during the Quaternary. Whereas the Riverine Barrier Hypothesis is traditionally used to explain the influence of rivers on speciation, processes such as river rearran…
View article: Predicting animal abundance through local ecological knowledge: An internal validation using consensus analysis
Predicting animal abundance through local ecological knowledge: An internal validation using consensus analysis Open
Given the ongoing environmental degradation from local to global scales, it is fundamental to develop more efficient means of gathering data on species and ecosystems. Local ecological knowledge, in which local communities can consistently…
View article: Climate determines transmission hotspots of Polycystic Echinococcosis, a life-threatening zoonotic disease, across Pan-Amazonia
Climate determines transmission hotspots of Polycystic Echinococcosis, a life-threatening zoonotic disease, across Pan-Amazonia Open
Polycystic Echinococcosis (PE), a neglected life-threatening zoonotic disease caused by the cestode Echinococcus vogeli, is endemic in the Amazon. Despite being treatable, PE reaches a case fatality rate of around 29% due to late or missed…
View article: Whole genomes of the amazonian<i>Cacajao</i>reveal complex connectivity and fast differentiation driven by high environmental dynamism
Whole genomes of the amazonian<i>Cacajao</i>reveal complex connectivity and fast differentiation driven by high environmental dynamism Open
Despite showing the greatest primate diversity on the planet, genomic studies on Amazonian primates show very little representation in the literature. With 48 geolocalized high coverage whole genomes from wild uakari monkeys, we present th…
View article: Molecular systematics of tamarins with emphasis on genus<i>Tamarinus</i>(Primates, Callitrichidae)
Molecular systematics of tamarins with emphasis on genus<i>Tamarinus</i>(Primates, Callitrichidae) Open
The genus Saguinus comprises three principal clades that diverged in the Middle to Late Miocene. Their taxa are ecologically differentiated and allopatrically distributed. These clades were recently recognized as different genera, Saguinus…
View article: The landscape of tolerated genetic variation in humans and primates
The landscape of tolerated genetic variation in humans and primates Open
Personalized genome sequencing has revealed millions of genetic differences between individuals, but our understanding of their clinical relevance remains largely incomplete. To systematically decipher the effects of human genetic variants…
View article: A global catalog of whole-genome diversity from 233 primate species
A global catalog of whole-genome diversity from 233 primate species Open
The rich diversity of morphology and behavior displayed across primate species provides an informative context in which to study the impact of genomic diversity on fundamental biological processes. Analysis of that diversity provides insig…
View article: Comparing diet, seed size and richness in fruit ingested by red howler monkeys (<i>Alouatta juara<i></i></i>) in two habitat types in Central Amazonia
Comparing diet, seed size and richness in fruit ingested by red howler monkeys (<i>Alouatta juara<i></i></i>) in two habitat types in Central Amazonia Open
Primates within the Alouatta genus (howler monkeys) inhabit a wide range of environments due to their flexible folivorous-frugivorous diet. However, the feeding ecology of Alouatta species that inhabit continuous and difficult-to-acc…
View article: A global catalog of whole-genome diversity from 233 primate species
A global catalog of whole-genome diversity from 233 primate species Open
The rich diversity of morphology and behavior displayed across primate species provides an informative context in which to study the impact of genomic diversity on fundamental biological processes. Analysis of that diversity provides insig…
View article: The landscape of tolerated genetic variation in humans and primates
The landscape of tolerated genetic variation in humans and primates Open
Personalized genome sequencing has revealed millions of genetic differences between individuals, but our understanding of their clinical relevance remains largely incomplete. To systematically decipher the effects of human genetic variants…
View article: Comparative gastrointestinal organ lengths among Amazonian primates (Primates: Platyrrhini)
Comparative gastrointestinal organ lengths among Amazonian primates (Primates: Platyrrhini) Open
Objectives The morphological features of the gastrointestinal tract (GIT) in mammals reflect a species' food niche breadth and dietary adaptations. For many wild mammals, the relationship between the structure of the GIT and diet is still …
View article: Taxonomic review of<i>Saguinus mystax</i>(Spix, 1823) (Primates, Callitrichidae), and description of a new species
Taxonomic review of<i>Saguinus mystax</i>(Spix, 1823) (Primates, Callitrichidae), and description of a new species Open
Although the Amazon has the greatest diversity of primates, there are still taxonomic uncertainties for many taxa, such as the species of the Saguinus mystax group. The most geographically broadly distributed and phenotypically diverse spe…
View article: Variation in dietary resilience among Amazonian populations living in a context of dramatic seasonal flooding
Variation in dietary resilience among Amazonian populations living in a context of dramatic seasonal flooding Open
Every year, during one the planet’s greatest seasonal flooding events, Central Amazonian rivers inundate farmland and expand aquatic habitats, making fish harder to catch. Understudied is whether this hydrological regime impacts human diet…
View article: Are larger primates less faunivorous? Consumption of arthropods by Amazonian primates does not fulfil the Jarman-Bell and Kay models
Are larger primates less faunivorous? Consumption of arthropods by Amazonian primates does not fulfil the Jarman-Bell and Kay models Open
Terrestrial arthropod groups, including insects, spiders, and millipedes, represent an important food resource for primates. However, species consumed and patterns and rates of arthropod-related feeding for most frugivorous primates are st…
View article: Ultrasound evaluation of fetal bone development in the collared (<i>Pecari tajacu</i>) and white‐lipped peccary (<i>Tayassu pecari</i>)
Ultrasound evaluation of fetal bone development in the collared (<i>Pecari tajacu</i>) and white‐lipped peccary (<i>Tayassu pecari</i>) Open
The study of fetal development allows for evaluating the different strategies adopted by mammal species to maximize neonatal survival. Autonomous locomotion is fundamental for newborns to perform foraging activities and increases newborn s…
View article: Two hundred and five newly assembled mitogenomes provide mixed evidence for rivers as drivers of speciation for Amazonian primates
Two hundred and five newly assembled mitogenomes provide mixed evidence for rivers as drivers of speciation for Amazonian primates Open
Mitochondrial DNA remains a cornerstone for molecular ecology, especially for study species from which high‐quality tissue samples cannot be easily obtained. Methods using mitochondrial markers are usually reliant on reference databases, b…
View article: Environmental and biological drivers of prevalence and number of eggs and oocysts of intestinal parasites in red howler monkeys from Central Amazonia
Environmental and biological drivers of prevalence and number of eggs and oocysts of intestinal parasites in red howler monkeys from Central Amazonia Open
Host-parasite relationships can be directly affected by host’s biological aspects and environmental factors, which influence both the survival of infective forms and the incidence of parasites. However, logistical difficulties in accessing…
View article: Are larger primates less faunivorous? Consumption of arthropods by Amazonian primates does not fulfil the Jarman-Bell and Kay models
Are larger primates less faunivorous? Consumption of arthropods by Amazonian primates does not fulfil the Jarman-Bell and Kay models Open
Terrestrial arthropod groups, including insects, spiders, and millipedes, represent an important food resource for primates. However, species consumed and patterns and rates of arthropod-related feeding for most frugivorous primates are st…
View article: Congruence of local ecological knowledge (LEK)‐based methods and line‐transect surveys in estimating wildlife abundance in tropical forests
Congruence of local ecological knowledge (LEK)‐based methods and line‐transect surveys in estimating wildlife abundance in tropical forests Open
Effective estimation of wildlife population abundance is an important component of population monitoring, and ultimately essential for the development of conservation actions. Diurnal line‐transect surveys are one of the most applied metho…
View article: The Role of River Flooding as an Environmental Filter for Amazonian Butterfly Assemblages
The Role of River Flooding as an Environmental Filter for Amazonian Butterfly Assemblages Open
Amazonian flooded ( várzea ) and upland ( terra firme ) forests harbor distinct assemblages of most taxonomic groups. These differences are mainly attributed to flooding, which may affect directly or indirectly the persistence of species. …
View article: Distribution of Chelus fimbriata and Chelus orinocensis (Testudines: Chelidae)
Distribution of Chelus fimbriata and Chelus orinocensis (Testudines: Chelidae) Open
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