A5036509772- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Ichthyology and Marine Biology
- Fish Ecology and Management Studies
- Marine and fisheries research
- Agricultural and Food Sciences
- Aquaculture Nutrition and Growth
- Reproductive biology and impacts on aquatic species
- Parasite Biology and Host Interactions
- Environmental Toxicology and Ecotoxicology
- Identification and Quantification in Food
- Coral and Marine Ecosystems Studies
- Rural Development and Agriculture
- Academic Research in Diverse Fields
- Paleontology and Evolutionary Biology
Universidade Federal do Maranhão
2016-2024
Universidade Estadual do Maranhão
2022-2024
Universidade Federal do Oeste do Pará
2021
Amazon (United States)
2018-2019
Universidade Federal de Pernambuco
2019
The Maranhão State harbours great fish diversity, but some areas are still undersampled or little known, such as the Munim River Basin in northeast of State. This lack knowledge is critical when considering anthropogenic impacts on riverine systems especially face major habitat destruction. These pressing threats mean that a comprehensive understanding diversity and checklists extremely relevant. Therefore, present study provides checklist species found Basin, State, north-eastern Brazil,...
Hyphessobryconcaru sp. nov. is described based on five different and independent methods of species delimitation, making the hypothesis this new supported by an integrative taxonomy perspective. This has a restricted distribution, occurring just in upper Pindaré river drainage, Mearim basin, Brazil. It member rosy tetra clade, which characterized mainly presence dark brown or black blotch dorsal fin absence midlateral stripe body. distinguished from members clade shape its humeral spot,...
A new species of Hyphessobrycon is described for the upper Munim and Preguiças river basins, northeastern Brazil, supported by morphological molecular delimitation methods. This belongs to Hyphessobryconsensu stricto group, as it has three main diagnostic character states this assemblage: presence a dark brown or black blotch on dorsal fin, absence midlateral stripe its flank position Weberian apparatus upward horizontal through margin operculum. Our phylogenetic analysis also allocation in...
Abstract: We present here an embracing freshwater fish inventory of the Parque Nacional dos Lençóis Maranhenses and adjacent areas, reporting 49 species, 33 which were identified accurately at species level, representing ten orders 25 families that range from obligate to estuarine organisms. This number is much larger than two previous studies for park, each just 12 fishes occurring on environments. Among recorded in this study, 14 are new records Maranhenses, one corresponds introduced...
Abstract: In the present work, we conducted an extensive long-lasting inventory of fishes, using different collection methodologies, covering almost entire Pindaré River drainage, one principal tributaries Mearim basin, area included in Amazônia Legal region, northeastern Brazil. We reported 101 species, just three them being non-native, demonstrating that composition this studied fish community is majority composed native species. found a predominance species orders Characiformes and...
Two new species, Hyphessobrycon frickei Guimarães, Brito, Bragança, Katz & Ottoni sp. nov. and H. geryi nov., are herein described, based on seven different independent species delimitation methods, molecular morphological characters, making the hypothesis of these supported from an integrative taxonomy perspective. They belong to “Rosy tetra” clade, which is mainly characterized by presence a dark brown or black blotch dorsal fin absence midlateral stripe body. These two distinguished...
Abstract A new species of Knodus from the Mearim and Munim River basins, Northeastern Brazil, is herein described based on integrative taxonomy, by using different molecular delimitation methods independent approaches. The possesses combination character states that usually diagnoses genus. a similar colour pattern to K. victoriae, which also morphologically it. differs victoriae possessing more total vertebrae, branched anal-fin rays, fewer circumpeduncular scales. We provide detailed...
Charax awa sp. n. is herein described from the Rio Mearim, Munim and Turiaçu basins, three coastal river basins of northeastern Brazil located between Rios Gurupi Parnaíba basins. These have a complex still poorly known biogeographic history. This region ecologically extremely relevant since it comprises main Brazilian biomes, as well as, transition zones them: Amazônia, Cerrado Caatinga. Therefore, this area has faunal floristic representatives these which makes particularly in terms...
Abstract: The Munim River basin is one of the main river drainages Hydrological unit Maranhão, but there are few published studies which focus on ichthyological surveys and taxonomic work within this basin. present study aims to provide a fish species inventory Mata da Itamacaoca, urban protected areas from upper basin, comparing ichthyofauna with other lists by conducted at A total 42 collection expeditions were conducted, sampling was five collecting sites distributed boundaries de...
A new species of Aphyocharax is described from the Maracaçumé river basin, eastern Amazon, based on morphological and molecular data. The differs all its congeners, mainly by possessing upper caudal-fin lobe longer than lower one in mature males, other characters related to teeth counts, colour pattern, body depth at dorsal-fin origin. In addition, corroborated a haplotype phylogenetic analyses Cytochrome B (Cytb) mitochondrial gene, where haplotypes are grouped into an exclusive lineage,...
Abstract The great biodiversity of neotropical fish species that have external fertilization as a reproductive strategy, like the tambaqui, requires more careful analyzes in toxicological tests various pesticides implemented Brazilian agriculture over last few years. In this context, objective present work was to evaluate possible sperm alterations tambaqui (Colossoma macropomum) semen exposed two different pesticide residues. Seminal samples sexually mature males from local farm were used....
Abstract Recent studies in eastern Amazon coastal drainages and their surroundings have revealed new fish species that sometimes exhibit little morphological differentiation (cryptic species). Thus, we used a DNA-based delimitation approach to test if populations showing the morphotype typical character states of Aphyocharax avary holotype correspond either A. or brevicaudatus, two known from region, they form independent lineages, indicating cryptic speciation. WP GMYC analyses recovered...
The obscure taxonomic histories of three species Aphyocharax ( A.alburnus , A.avary and A.pusillus ) are revised, based on both morphological literature data. Aphyocharaxavary is resurrected as a valid removed from synonymy with . Based examinations type specimens, considered junior synonym
Abstract Gobionellus stomatus, a fish species endemic to Brazil, was previously known occur from the State of Piauí Rio Grande do Sul. Here we present first record this for Maranhão, specifically Upaon-Açu island, extending its distribution further west, coastal zone Amazon region. This inhabits estuarine ecosystems susceptible environmental pressures, such as pollution and introduction non-native species. Despite G. stomatus being classified least concern conservation, it is crucial...
The Tibiri River basin is a hydrographic system of the city São Luís, capital state Maranhão located in Upaon-Açu Island. It an important watercourse region but has been increasingly impacted by urbanization, as well other anthropic activities. estuaries and mangroves this river serve nurseries for several fish species, providing shelter, food, protection. Despite its ecological biodiversity significance, remains understudied, particularly concerning ichthyofauna. Understanding diversity...
ABSTRACTThis study presents the first records of C. smaragdus in Maranhão State, found on Raposa Channel Estuary, Brazilian Amazon Coast. The new record could be justified by use inappropriate sampling methods and focus ichthyology researches State. RESUMOO presente estudo registra pela primeira vez Ctenogobius para o Estado do Maranhão, exemplar foi encontrado no canal da Raposa, Costa Amazônica Brasileira. A falta de registro pretérito pode ser justificada pelo uso metódos inapropriados e...
Abstract Every activity that involves exploitation of natural resources, such as fishing, needs to be organized and conducted based on information from monitoring programs allow continuous evaluation. With the increasing fishing pressure in Brazil, understanding importance fisheries how they can inform assist conservation decision-making remains limited. Based literature participatory conservation, we call attention need generate national sector order improve country. Given context stocks...
A ecologia alimentar de uma determinada espécie faz parte e interfere diretamente na dinâmica sua população, se tornando relevante para a conservação do ecossistema. Desta forma, este estudo permitiu estudar os principais aspectos da trófica, além estratégia possíveis variações ontogenéticas alimentação robalo Centropomus undecimalis no município Tutóia - MA. metodologia realizada constou identificação retirada dos dados biométricos dissecação 147 estômagos análise conteúdo estomacal, com...
This study presents Ctenogobius boleosoma from the São Luis estuarine region, first record state of Maranhão, northeastern Brazil. species may have gone unrecorded Maranhão due to difficulties in collecting gobies by usual sampling methods, such as gill nets, corking and longlines, even when using nets with an appropriate mesh size.
As poças de maré são formadas pelo represamento massas d’água durante a vazante e sua troca ocorre ao longo cada ciclo marés, configurando em um ambiente explorado por várias espécies. A ictiofauna é componente das maré, algumas espécies totalmente adaptadas (e.g. plasticidade fisológica, tamanho reduzido) seu vida apenas nas maré. Contudo, muitas utilizam as fases do para fins alimentação, refúgio reprodução. Considerando que os inventários fundamentais o conhecimento da biodiversidade,...
During a field expedition in 2020, we recorded specimens of an invasive platy fish, Xiphophorus maculatus , the state Maranhão, Brazil. This new occurrence, Municipality São Luis, is only second time that this non-native species has been found northeastern We provide updated list all from island Luís, highlighting negative impacts they may confer for native biodiversity.
Hypostomus krikati sp. n. is described from the Mearim River basin, state of Maranhão, northeastern Brazil. This new species shares all diagnostic features defining plecostomus super-group. Three H. super-group are geographically close to here (Hypostomus jaguribensis, pusarum and papariae). easily distinguised them by having conspicuous keels along lateral series plates. There other that do not belong (H. johnii, velhomonge velhochico). differs these a lower number teeth, plates, abdominal...