Jean Ricardo Simões Vitule - Academia.edu (original) (raw)

Papers by Jean Ricardo Simões Vitule

Acta of Fisheries and Aquatic Resources, 2017

Resumo Saint-Paul (2017) discutiu o cultivo de espécies nativas na produção aquícola brasileira a... more Resumo Saint-Paul (2017) discutiu o cultivo de espécies nativas na produção aquícola brasileira argumentando que a seleção de espécies para sustentar a demanda nacional já é conclusiva. Porém, as espécies utilizadas, em sua maioria, não são autóctones da bacia hidrográfica onde são cultivadas e, portanto, não devem ser consideradas nativas. Destaca-se ainda, o risco das introduções entre bacias, em um país com dimensões continentais como o Brasil, que abriga várias ecoregiões e "Ramsar sites". Barreiras naturais são mais relevantes biologicamente que divisões geopolíticas, sendo assim, espécies brasileiras devem ser consideradas não-nativas quando introduzidas em uma bacia ou sub-bacia na qual ela não ocorre naturalmente. Além disso, híbridos não devem ser considerados nativos, pois podem comprometer populações nativas por meio de introgressões genotípicas. Diante disso, o objetivo do presente estudo é discutir o cultivo de espécies introduzidas de outras bacias brasileiras, demonstrando que a aquicultura no Brasil ainda precisa ser aprimorada, visando: i) tornar a aquicultura ambientalmente correta, principalmente em relação ao vazamento de resíduos para ambientes naturais; ii) regionalizar a produção estimulando o uso de espécies autóctones (e.g. dentro da menor escala biogeográfica possível) através da exploração do mercado local em pequenas e médias escalas; iii) evitar o cultivo de híbridos; iv) desenvolvimento tecnológico (prevenção de escapes e eutrofização ambiental) e v) mudança política e legislativa, adotando o Princípio da Precaução, considerando os efeitos da aquicultura na biodiversidade e nos serviços ecossistêmicos e principalmente levando em conta tratados do qual o Brasil é signatário. Por exemplo, a 10 a Conferência das Partes da Convenção sobre Diversidade Biológica (CBD, Protocolo de Nagoya), onde Brasil e outros 192 países estabeleceram um Plano Estratégico e metas para reduzir a perda de biodiversidade em escala global-o Aichi Metas de Biodiversidade. Reforçamos que o uso de espécies nativas é preferível, porém, estas devem ser escolhidas levando em conta limites biogeográficos (bacias) e não limites geopolíticos. A presente situação da aquicultura no Brasil necessita de mudanças com novas e melhores práticas, do contrário a biodiversidade aquática brasileira poderá ser corrompida pela produção aquícola.

Estudos de Biologia, 2003

Freshwater Biology, May 17, 2023

Freshwater Biology

Hydropower dams affect freshwater biodiversity by virtue of modifying flow regimes and degrading ... more Hydropower dams affect freshwater biodiversity by virtue of modifying flow regimes and degrading habitat conditions both above and below the water impoundment and diversion structure. In recent decades, there has been a global proliferation of Small Hydropower Plants (SHPs) propelled by incentive policies and a general perception that small dams are less harmful to the environment. However, limited science is available on the effects of SHPs on freshwater biodiversity, which is concerning considering their sheer numbers and the high variability in the size and operation of dams classified as SHPs. We investigated the ecological effects of 12 SHPs on macroinvertebrate and fish assemblages of the Chapecó River Basin, Brazil. Our study included sites located upstream of the SHPs and sites directly affected by their operations (i.e., reservoir, dewatering section and downstream of the powerhouse). This design allowed us to quantify shifts in taxonomic composition and examine the relativ...

Journal of Applied Ichthyology, 2019

The introduction and establishment of invasive species are promoting a pattern of global biotic h... more The introduction and establishment of invasive species are promoting a pattern of global biotic homogenization via the replacement and extinction of endemic species (Bezerra et al.,

Zoologia (Curitiba), 2016

The suckermouth armored catfishes of the genus Hypostomus Lacépède, 1803 are bottom-dwelling lori... more The suckermouth armored catfishes of the genus Hypostomus Lacépède, 1803 are bottom-dwelling loricariids. They are characterized by certain morphological specializations such as outstanding structural modifications on the feeding apparatus (Schaefer 1987) and shape of the intestine (Podkowa & Gonia-kowSka-witalińSka 2003). The ventrally oriented oral disc with adhesive papillae and comb-like tooth plates of the upper and lower jaws, depressed body and paired fin orientation are morphological adaptations to fast flowing aquatic environments (BurGeSS 1989). These adaptations allow them to strongly adhere to and scrap uneven and structurally complex substrates (Schaefer & lauder 1986). Although many armored catfishes normally feed on algae growing on submerged surfaces (Buck & Sazima 1995, PaGotto et al. 2011, Power 1984), studies on the diet of Hypostomus indicate that they can also feed on detritus and other small food items (cardone et al. 2006, delariva & aGoStinho 2001, mazzoni et al. 2010). This typically benthic feeding habit has important effects on primary production, nutrient cycling and macro invertebrates drift, among other direct and indirect ecological effects (dudGeon 1993, fauSch et al. 2002, mcintyre et al. 2007). In the Neotropical region, several studies analyzed the relationships between armored catfishes with similar morphological characteristics and feeding ecology (e.g., delariva & aGoStinho 2001, caSatti & caStro 2006, ferreira 2007, PaGotto et al. 2011), showing the influence of adaptive variations in the feeding-mode on the segregation of trophic niches, with important consequences for resource utilization and interactions among coexisting species (delariva & aGoStinho 2001). The coexistence of functionally similar species can be promoted through differential use of resources. Resource partitioning includes food, habitat and/or temporal segregation (e.g.,

Anais da Academia Brasileira de Ciências, 2016

RESUMO Plantações de árvores não nativas representam 7% das florestas do mundo e 1,24% da vegetaç... more RESUMO Plantações de árvores não nativas representam 7% das florestas do mundo e 1,24% da vegetação brasileira. Essas áreas plantadas devem aumentar no futuro próximo; assim, é importante sistematizar o conhecimento existente sobre os efeitos ecológicos das plantações para auxiliar o manejo florestal e a conservação da biodiversidade. Aqui, realizamos uma revisão sistemática da literatura ecológica associada com espécies plantadas de Pinus e de Eucalyptus no Brasil. Nós comparamos as métricas de publicação com: a distribuição geográfica das espécies, os tipos de ecossistemas, os biomas, os taxa, e os impactos ecológicos. Encontramos 152 publicações entre 1992 e 2012. O número de publicações está positivamente correlacionada com a área plantada, número de plantações com certificação florestal, número de investigadores existente, e riqueza de reinos estudados. A maioria dos estudos foram em ecossistemas terrestres (92,1%), no bioma Mata Atlântica (55,3%), e no reino Animalia (68,2%). ...

Environmental Science and Pollution Research, 2015

Iguaçu River is the second most polluted river of Brazil. It receives agrochemicals and contamina... more Iguaçu River is the second most polluted river of Brazil. It receives agrochemicals and contaminants of urban and industrial sources along its course. A multibiomarker approach was employed here to evaluate the health of a small characin (Astyanax spp.) at two sites along the river, sampled during a dry (autumn) and a rainy (spring) season. Biomarkers were condition factor and somatic indices (gonads and liver); genetic damage (comet assay and micronucleus test); enzyme activities such as hepatic catalase (CAT) and glutathione Stransferase (GST), lipoperoxidation (LPO), branchial and renal carbonic anhydrase (CA), acetylcholinesterase (AChE) in the muscle and the brain, histopathology of the liver and gills, and concentrations of polycyclic aromatic hydrocarbons (PAHs) in bile. There were no consistent differences in biomarker responses between the two study sites. Some biomarkers revealed greater potential impact in the rainy season, when increased amounts of contaminants are washed into the river (combined CAT inhibition and LPO increase, CA upregulation). Other biomarkers, however, revealed potential greater impact in the dry season, when contaminants potentially concentrate (GST induction, AChE inhibition, and liver histopathological alterations). Although of a complex nature, field experiments such as this provide rich data for monitoring protocols and assessment of general risk of exposure to pollutants of river systems.

Biodiversity and Conservation, 2019

Alien or non-native species are defined as species living outside their natural distributional ra... more Alien or non-native species are defined as species living outside their natural distributional ranges. The spread of alien species is increasing globally as a result of rapid technological advances and globalization. Recent investigations have estimated global hotspots of alien established species on the basis of geopolitical boundaries, including Dawson et al.

Acta Limnologica Brasiliensia, 2023

on-line version This is an Open Access article distributed under the terms of the Creative Common... more on-line version This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Reproduction of the invasive largemouth bass Micropterus salmoides (Lacepède, 1802) in a Neotropical reservoir with suggestions to management and control Reprodução do black-bass invasor Micropterus salmoides (Lacepède, 1802) em um reservatório neotropical, com sugestões para manejo e controle

Ecology Letters, Jan 27, 2022

A Ciência Cidadã (CC) pode ser uma importante ferramenta na análise de impactos e mudanças na bio... more A Ciência Cidadã (CC) pode ser uma importante ferramenta na análise de impactos e mudanças na biodiversidade, especialmente pela ampla distribuição dos voluntários. A CC foi utilizada como ferramenta no presente trabalho com o detectar a ocorrência de Oreochromis niloticus em Rondônia. Registros de ocorrência foram obtidos com 129 pescadores, com auxílio de formulário de perguntas enviado pelo aplicativo WhatsApp®. 150 piscicultores foram entrevistados sobre o manejo das pisculturas. Estas informações foram posteriormente cruzadas com os dados oficiais do número de produtores de O. niloticus no estado, do IDARON, do IBGE e do órgão ambiental (SEDAM). Os dados gerados evidenciam grande número de pisciculturas em Rondônia (~1300) de O. niloticus sem registro no órgão ambiental. O risco de escape de indivíduos é grande, visto que apenas 29% dos piscicultores responderam utilizar sistemas de contenção, e 51% admitiram permitir escapes das espécies cultivadas no meio ambiente. O que é confirmado relato de visualização de O. niloticus em ambiente natural por 43% dos pescadores em 24 locais.

This is an open access article under the terms of the Creat ive Commo ns Attri bution-NonCo mmerc... more This is an open access article under the terms of the Creat ive Commo ns Attri bution-NonCo mmercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

Environmental Conservation

The Atlantic Forest, 2021

Frontiers in Ecology and Evolution, 2021

Non-native fish (NNF) can threaten megadiverse aquatic ecosystems throughout the planet, but limi... more Non-native fish (NNF) can threaten megadiverse aquatic ecosystems throughout the planet, but limited information is available for the Amazon Region. In this study we review NNF data in the Amazonian macroregion using spatiotemporal records on the occurrence and the richness of NNF from a collaborative network of 35 regional experts, establishing the Amazon NNF database (ANNF). The NNF species richness was analyzed by river basin and by country, as well as the policies for each geopolitical division for the Amazon. The analysis included six countries (Brazil, Peru, Bolivia, Ecuador, Venezuela, and Colombia), together comprising more than 80% of the Amazon Region. A total of 1314 NNF occurrence records were gathered. The first record of NNF in this region was in 1939 and there has been a marked increase in the last 20 years (2000–2020), during which 75% of the records were observed. The highest number of localities with NNF occurrence records was observed for Colombia, followed by Bra...

Hydrobiologia, 2020

Non-native freshwater fish introduced via the aquarium trade can cause major changes at the commu... more Non-native freshwater fish introduced via the aquarium trade can cause major changes at the community level over time and space, resulting in dynamics context dependencies within homogenization process. We investigated fish biodiversity in anthropogenically impacted headwater creeks (i.e., under elevated propagule pressure) located in southeastern Brazil, through a standardized sampling program. We assessed ichthyological community composition with the aim of quantifying spatio-temporal dynamics across creeks. We divided the sampling period according to decades, in which ''2000s'' represented 2003, 2004, 2005, and 2006, while ''2010s'' represented 2015. Changes in pairwise community similarity indicated biotic homogenization in the 2000s (i.e., communities became more similar over time). In contrast, changes in pairwise similarity in the 2010s indicated biotic differentiation. We suggest that these changes are caused by the extirpation of both native and non-native species due to environmental degradation and the occurrence of six new non-native species. The beta-diversity increased between sampling seasons and creeks across decades, also indicating biotic differentiation. Our study provides strong evidence for a transition phase from biotic homogenization to differentiation of fish communities over time, caused by interaction between

Global Ecology and Biogeography, 2020

MotivationWe compiled a global database of long‐term riverine fish surveys from 46 regional and n... more MotivationWe compiled a global database of long‐term riverine fish surveys from 46 regional and national monitoring programmes and from individual academic research efforts, with which numerous basic and applied questions in ecology and global change research can be explored. Such spatially and temporally extensive datasets have been lacking for freshwater systems in comparison to terrestrial ones.Main types of variables containedThe database includes 11,386 time‐series of riverine fish community catch data, including 646,270 species‐specific abundance records, together with metadata related to the geographical location and sampling methodology of each time‐series.Spatial location and grainThe database contains 11,072 unique sampling locations (stream reach), spanning 19 countries, five biogeographical realms and 402 hydrographical basins world‐wide.Time period and grainThe database encompasses the period 1951–2019. Each time‐series is composed of a minimum of two yearly surveys (me...