Felipe Polivanov Ottoni

Verified

Felipe verified their affiliation via an institutional email.

Learn more

Verified

Felipe verified their affiliation via an institutional email.

Learn more

• PhD in Zoology
• Professor (Full) at Federal University of Maranhão

Biodiversity hotspots are recognized around the planet. Myers (1988, p. 187) defined these regions as having “(…) exceptional concentrations of species with exceptional levels of endemism (…)” that have “(…) exceptional degrees of threat.” Inspired by Myers’s definition, we propose the term type locality hotspot for an area that contains the type l...

Occupying territories without prior knowledge of the physical environments often leads to problems arising from inadequate planning. On April 10, 2012, Law No. 12,608 was enacted, establishing the National Policy on Protection and Civil Defense (PNPDEC). Article 3 of this law outlines territorial planning policies, highlighting that geotechnical ma...

The United Nations COP30 climate conference is set to take place in Belém, Brazil, an area facing critical issues like deforestation, illegal mining, and extreme climate events. Despite this, the Brazilian government’s plan to house attendees on luxury cruise ships runs contrary to the event’s climate-focused mission. Cruise ships generate high lev...

Betta uberis, a member of the Betta coccina group, was first discovered on the Island of Borneo in 2006. A recent expedition to Belitung Island, in Dukong Village, a Swamp Forest Stream in East Belitung Regency, identified a species with strong morphological similarities to Betta uberis. To confirm the relationship between the species, a genetic an...

Through field sampling and examination of scientific collections, this study provides new records and confirms the occurrence of Boulengerella cuvieri and B. lucius in the eastern Brazilian Amazon, northern Brazil. The occurrence of Boulengerella lucius for the Guamá River basin is here confirmed, specifically on its upper portion. The occurence of...

Here we provide an ichthyofaunistic inventory of the Cerqueira César municipality, in the middle Paranapanema River drainage, upper Paraná River basin, São Paulo State, southeastern Brazil. Collections were carried out in 10 streams and in the Novo River, an important watercourse in the Paranapanema River basin. We caught a total of 808 individu...

Valen FS, Mamat NB, South J, Ottoni FP, Vieira LO, Kamarudin AS, Afandi AY, Hasan V. 2024. Unveiling the occurrence of vulnerable Sisorid catfish (Teleostei: Sisoridae) in Bangka based on morphological and molecular evidence. Biodiversitas 25: 4543-4550. Glyptothorax robustus Boeseman 1966 is a vulnerable catfish species that is known to be distrib...

The identification of fish species by non-specialists remains a constant challenge for biodiversity management. In this regard, Robillard et al. developed a machine learning computer vision model to identify Amazonian fish at the genus level, with an accuracy of 97.9%. Their model aimed to facilitate fish identification by non-specialists, allowing...

Populations of freshwater species have been declining rapidly and species are becoming extinct. Thus, understanding freshwater species distribution, trends and patterns is required. The Munim River basin is situated in a region with a phytogeographic interface between the Amazon and Cerrado biomes. Although the Munim basin ichthyofauna is curren...

The mountain ranges of southeastern and southern Brazil are inhabited by a great diversity of catfishes of the genus Cambeva. The Cambeva variegata group, diagnosed by having a prominent skin crest similar to an adipose fin, an interrupted supraorbital laterosensory canal, with an additional supraorbital S4 pore, and a relatively small premaxilla w...

NOTA TÉCNICA: Eventos recorrentes de peixamentos (solturas de peixes) com o uso de espécies não nativas são praticados no Brasil com o suposto objetivo de “recuperação de estoques naturais” ou “respeito/proteção ao meio ambiente”. Entretanto, na maioria das vezes essas ações ignoram preceitos legais (o uso de espécies não nativas é crime ambiental)...

NOTA TÉCNICA: Eventos recorrentes de peixamentos (solturas de peixes) com o uso de espécies não nativas são praticados no Brasil com o suposto objetivo de “recuperação de estoques naturais” ou “respeito/proteção ao meio ambiente”. Entretanto, na maioria das vezes essas ações ignoram preceitos legais (o uso de espécies não nativas é crime ambiental)...

Gobionellus stomatus, a fish species endemic to Brazil, was previously known to occur from the State of Piauí to the State of Rio Grande do Sul. Here we present the first record of this species for the State of Maranhão, specifically for the Upaon-Açu island, extending its distribution further west, to thecoastal zone of the Amazon region. This spe...

Echinodorus is the second largest genus of the aquatic plant family Alismataceae, comprising 28 species, of which 24 occur in Brazil. This study represents the first record of Echinodorus scaber Rataj for the State of Maranhão, based on material collected in the Municipality of Brejo, eastern Maranhão. Echinodorus scaber shares morphological sim...

Nota de repúdio à utilização de peixes exóticosvisando o combate a larvas do mosquito AedesaegyptiO vetor de arboviroses Zika, Chikungunya,febre amarela e dengue, em ecossistemas aquá-ticos brasileiros. (PDF) Nota de repúdio à utilização de peixes exóticos visando o combate a larvas do mosquito Aedes aegypti, vetor das arboviroses Zika, chikungun...

Saddle Barb, Barbodes sellifer, is a freshwater fish endemic to Malay Peninsula and the Indonesian archipelago and is here recorded for the first time from Belitung Island, Indonesia. This is a range extension of about 300 km to the southeast from the closest previously known locality on Bangka Island, and, in addition to reporting its occurrence o...

Abstract: The Cambeva variegata group (CVG) is endemic to a region situated in the intersection of two endangered biodiversity hotspots, Cerrado and Atlantic Forest, and drained by two important South American river basins, the upper Rio Paraná and upper Rio São Francisco basins. Presently, CVG comprises two nominal species, besides some still unde...

Fish surveys are important in the context of the freshwater biodiversity crisis. Ichthyological surveys provide information before the species become extinct; and, therefore, may propitiate policies for conservation measures. Studies in this scope area needed especially in municipalities such as Piraju and Tejupá, which are located in a populous an...

Nicaragua faces a significant environmental crisis, hosting 7% of global biodiversity and 60% of Central America’s ecosystems. The Bosawás and Indio Maíz Forest Reserves, crucial for endemic species and traditional communities, are under threat due to corruption, crime, and government negligence. The approval of Law No. 953 in June 2017, establishi...

Understanding how functionally similar species segregate resources to minimize competition is vital for predicting evolutionary factors and patterns of coexistence. We conducted a study in Mata de Itamacaoca, in the middle Munim River basin, Maranhão, northeastern Brazil, to characterize the functional morphology and trophic niches of five coexisti...

Two new species of Diaphorocleidus and new data on D. affinis (Monogenoidea: Dactylogyridae) parasitizing Bryconops cf. affinis (Characiformes: Iguanodectidae) from the Munim River basin, State of Maranhão, northeastern Brazil Abstract During a study conducted on the helminth fauna of fishes in the middle Munim River basin, State of Maranhão, north...

This study evaluated the effect of co-feeding with commercial feed and live food (enriched or not with microalgae) on the growth and survival of Trachelyopterus galeatus larvae. Five treatments were carried out: commercial feed as a control (F); brine shrimp nauplii (BS); brine shrimp nauplii enriched with Chaetoceros sp. Microalgae (BSM); combined...

La loche aux yeux de feu Barbucca diabolica, rencontrée dans les eaux douces d’Asie du Sud-Est, est actuellement connue en Thaïlande, en Malaisie occidentale, à Sumatra et à Bornéo. Malgré cette large distribution, il n’y a pas de signalement publié sur cette espèce pour l’île de Belitung (Indonésie). Nous rapportons ici une première occurrence de...

Ichthyological Contributions of PecesCriollos 84: 1-13 - Not even two years have passed since the publication of the CLOFFBR-MA and the initial hope of the authors that this would establish a new zero-line from where to start and initiate a new era for Maranhão’s freshwater ichthyology has been fulfilled. Now that researchers and authors have a co...

The Amazon River basin is the Brazil’s largest source of freshwater. Traditional and local communities rely on the Amazon and its tributaries for basic resources such as water and food, as well as for transportation that facilitates the delivery of medical care and access to education. However, since June, the Amazon region has suffered an ex...

This study examines the risks associated with relying solely on images for documenting new species records, rediscoveries, taxonomic descriptions, and distribution expansions. We highlight concerns regarding image authenticity, especially in cases where images may be altered, adulterated, or AI (artificial intelligence)-generated, potentially leadi...

Segura’s Throatspine Gudgeon Belobranchus segura Keith, Hadiaty & Lord 2012 is an amphidromous fish from the Indo-Pacific region. In Indonesia, B. segura was distributed in Papua, Halmahera, Sulawesi (previously known as Celebes) and Java Island. The finding of this species in the lower stream river of Malang district, south of Java, Indonesia, was...

Here we describe anomalies in two Neotropical freshwater fishes. Case 1 refers to a tumour above the left pectoral fin near the operculum of a specimen of Rhamdia quelen (Heptapteridae). Case 2 is a horizontal plane dichotomy of the caudal filament of an individual of Gymnotus cf. sylvius (Gymnotidae). We also provide a brief comment of the possibl...

Le goujon de Segura Belobranchus segura Keith, Hadiaty & Lord 2012 est distribué dans les environnements saumâtres et d’eau douce aussi bien dans les eaux tropicales et subtropicales. Actuellement, l’espèce est connue de Halmahera, de Sulawesi, des Philippines, de la Province Barat (Papouasie), Lombok et Bali (Indonésie), Nouvelle-Bretagne (PNpnG),...

This work is a floristic study of Selaginella in Maranhão. The species survey is based on collections from fieldwork conducted between April 2006 and February 2023 and specimens from Maranhão deposited at the CCAA, HBRA, MG, and SLUI herbaria. Ten species were identified: Selaginella conduplicata, S. convoluta, S. erythropus, S. flagellata, S. gyno...

The introduction of non-native species (NNS) and the resulting biological invasions are conspicuous features of the Anthropocene Epoch. Parallel to these phenomena, some initiatives (political, social and scientific) have sought to value and protect invasive populations, recognizing some benefits that NNS may deliver to people and nature. Given thi...

This study was conducted aiming to record for the first time the occurrence of Mastacembelus notophthalmus Roberts, 1989 in Belitung Island (Indonesia), and update the geographic distribution of this species. Although this species is categorized as LC according to the IUCN Red List, it is rarely reported in fish inventories, with few specimens samp...

Premier signalement de l'anguille épineuse peu commune Mastacembelus notophthalmus roberts, 1989 (synbranchi-formes Mastacembelidae) pour l'île de Bangka, indonésie. Ce travail rapporte pour la première fois la présence de Masta-cembelus notophthalmus roberts, 1989 (synbranchiformes Masta-cembelidae) sur l'île de Bangka (Indonésie), plus spécifique...

Falta de critério científico e distorções de informações no texto “Invasoras, Casuais ou Naturalizadas?Buscando uma classificação científica para as tilápias”, publicado na Revista Panorama da AQÜICULTURAem 20/04/2023, por Sergio Zimmermann, Renata M. Barroso Bertolini, Bruno M. Queiroz, Bernardo Baldisserotto e Danilo Streit. https://panoramadaaq...

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 of the various pesticides implemented in Brazilian agriculture over the last few years. In this context, the objective of the present work was to evaluate possible s...

Every activity that involves exploitation of natural resources, such as fishing, needs to be organized and conducted based on information from monitoring programs to allow continuous evaluation. With the increasing fishing pressure in Brazil, the understanding of the importance of fisheries monitoring programs and how they can inform and assist in...

Hasan V, Andraini NE, Isroni W, Sari LA, Nafisyah AL, Dewi NN, Putri DNA, Prasasti TAB, Ramadhani AA, Daniel K, South J, Vieira LO, Ottoni FP, Maftuch, Faqih AR, Wirabuana PYAP, Tamam MB, Valen FS. 2023. Fish diversity of the Bengawan Solo River estuary, East Java, Indonesia. Biodiversitas 24: 2207-2216. Bengawan Solo River is the longest river in...

Background The Maranhão State harbours great fish diversity, but some areas are still undersampled or little known, such as the Munim River Basin in the northeast of the State. This lack of knowledge is critical when considering anthropogenic impacts on riverine systems especially in the face of major habitat destruction. These pressing threats mea...

Lobocheilos falcifer (Valenciennes, 1842) is a freshwater fish endemic to the island of Java, Indonesia, and has been assessed as Vulnerable according to the International Union for the Conservation of Nature criteria. In May 2022, a male specimen of L. falcifer was collected in the Way Sekampung River, Lampung Province, Sumatra, Indonesia. This re...

O Parque Nacional Chapada das Mesas (PNCM) é a quarta maior Unidade de Conservação (UC) do Maranhão, e nela podemos observar pequenas plantas formando tufos ou tapetes sobre rochas, solo e troncos de árvores vivas ou em decomposição, conhecidas por briófitas ou musgos. A brioflora no PNCM está representada por 132 espécies, divididas entre musgos (...

Samambaias e licófitas são plantas herbáceas que se reproduzem por esporos, e são dependentes de água ou umidade para sua sobrevivência e reprodução. O presente trabalho apresenta um inventário florístico das espécies de samambaias e licófitas do Parque Nacional da Chapada das Mesas, Estado do Maranhão. No total, a riqueza de samambaias e licófitas...

Hypostomus krikati sp. n. is described from the Mearim River basin, state of Maranhão, northeastern Brazil. This new species shares all the diagnostic features defining the Hypostomus plecostomus super-group. Three species of the H. plecostomus super-group are geographically close to the species described here (Hypostomus jaguribensis, H. pusarum a...

Hasan V, Mamat NB, South J, Ottoni FP, Widodo MS, Arisandi P, Isroni W, Jerikho R, Samitra D, Faqih AR, Simanjuntak CPH, Mukti AT. 2022. A checklist of native freshwater fish from Brantas River, East Java, Indonesia. Biodiversitas 23: 6031-6039. This study aims to provide information on the freshwater fish species composition of the Brantas River,...

Unlabelled: Cichlid fishes are an important model system in evolutionary biology, primarily because of their exceptional diversity. However, while some cichlid assemblages, such as the ones of the African Great Lakes, have received considerable attention, others are not well studied, including many riverine species. Here, we focus on the Australoh...

Mikrogeophagus maculicauda sp. n. is described from the upper Rio Guaporé drainage in the Estado Mato Grosso in Brazil. It can be distinguished from the congeners by the presence of the following characteristics: a large rectangular or square dark spot extending almost over the entire caudal peduncle, a greenish metallic sheen on the sides of the b...

Introdução: O crescimento populacional exige maior demanda por proteína de qualidade. Sendo assim, diversos países vêm expandindo os sistemas de produção de peixes, visando técnicas sustentáveis e viáveis que atendam às necessidades do público consumidor. Objetivo: Esta pesquisa buscou identificar os aspectos que caracterizam o consumidor de peixes...

Barbonymus gonionotus, a fish species in the family Cyprinidae, is known from Western Indonesia. In Java, it was previously known only from the mainland and had never been reported from Madura Island, east of Java This paper provides the first description of B. gonionotus from the Kemuning River in Madura Island. The specimens of B. gonionotus were...

A bearded gudgeon Pogoneleotris heterolepis (Günther, 1869) with c. 19 cm of total length was photographed on 10 June 2021 in Kapuas River, West Kalimantan province, Indonesia. This rare finding represents the first country record of P. heterolepis in Indonesia after previously only recorded in Sarawak, Malaysia.

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 based species delimitation methods and independent approaches. The new species possesses the combination of character states that usually diagnoses the genus. The new species possesses...

L’éléotride lotier aux petits yeux, Prionobutis microps, setrouve dans les environnements tropicaux et subtropicaux d’eausaumâtre et d’eau douce de l’asie du sud-Est jusqu’en australie.actuellement, il est connu des estuaires et de la partie médiane desrivières de nouvelle-Guinée, d’australie du nord, de Papouasie(indonésie), de thaïlande et de Mal...

The Jaguar cichlid, Parachromis managuensis (Giinther, 1867), is native to Central America, with introductions reported from West Java and Central Java Provinces of Indonesia. O n 7-8 January 2019, sixteen specimens of P. managuensis were collected from Icarangkates, the largest hydropower reservoir in East Java Province of Indonesia. A description...

The Kryptolebias marmoratus species group is composed of the only three vertebrate species that lack females. These species present only males and simultaneously hermaphroditic individuals; that are able to reproduce by allogamy, with males, or by autogamy, performing self-fertilization and generating clones of themselves. The proportion of males i...

In Brazil, the number of floristic inventories involving ferns and lycophytes in the Cerrado domain is considerable. However, most of the diversity is recorded for states in the Central-West Region. In addition to the Cerrado domain, Maranhão State contains part of Amazonia and a small portion of the Caatinga. However, for this state, ferns and lyc...

Maranhão is one of Brazil's 27 federative units, located in the Northeastern region of Brazil, being the second largest state in this region and the eighth largest state of Brazil, corresponding to about 3.9% of the national territory. In Maranhão, there are two of the main Brazilian biomes (the Amazon and the Brazilian Cerrado), as well as several...

For the first time, the species Betta picta is registered for the southern part of Central Java (Indonesia), being recorded for two localities in the Progo River basin catchment, one in the Magelang and the other in the Bantul Regency, representing an extension of about 100km south to the nearest previously known distribution. These two new records...

The Roughback Whipray Fluvitrygon kittipongi is a stingray species listed as "Endangered" according to the updated IUCN Red List. Until the year 2021, F. kittipongi was only known from five rivers in Southeast Asia, namely: Maekhlong and Chao Phraya River in Thailand, Pawan and Kapuas River in Borneo, Indonesia, and Musi River in Sumatra, Indonesia...

As poças de maré são formadas pelo represamento de massas d'água durante a vazante e a sua troca ocorre ao longo de cada ciclo de marés, configurando em um ambiente explorado por várias espécies. A ictiofauna é um componente das poças de maré, algumas espécies são totalmente adaptadas (e.g. plasticidade fisológica, tamanho reduzido) e seu ciclo de...

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 species delimitation approach to test if populations showing the morphotype and typical character states of the Aphyocharax avary holotype c...

Kullander (1986) descreveu o gênero Laetacara Kullander, 1986 para incluir as espécies do grupo Aequidens dorsiger sensu Kullander (1983), sendo a espécie Laetacara flavilabris designada como espécie-tipo do gênero (Kullander, 1986; Ottoni, 2018). Além disso, Kullander (1986) redescreveu a espécie em questão, com base, principalmente, em material p...

Le requin lancette Glyphis glyphis se rencontre en Australie et Papouasie-Nouvelle-Guinée, et il n’avait jamais été signalé au-delà de cette aire d’extension. Le présent article fournit le premier signalement de cette espèce en-dehors de sa distribution connue. Nous avons identifié un spécimen de G. glyphis en 2018, à la rivière Digul dans le distr...

This research aimed to analyze the reproductive biology of Hoplias malabaricus, a fish known as traíra, in the Hydrographic Basin of the Pericumã River, Amazon Maranhense. All the specimens captured came from artisanal fishing, carried out every two months from July 2018 to July 2019, the fishing gear used was the waiting net. Analysis of length va...

During a field expedition in 2020, we recorded specimens of an invasive platy fish, Xiphophorus maculatus, in the state of Maranhão, Brazil. This new occurrence, in the Municipality of São Luis, is only the second time that this non-native species has been found in northeastern Brazil. We provide an updated list of all invasive species recorded fro...

The Atterberg limits are essential information and the first step in soil classification for geotechnical purposes. Established laboratory procedures use distilled water in the plasticity and liquid limits determination. However, saline solutions frequently interact with soils in the construction environment through fluid percolation processes. Thi...

Fauna parasitária de um peixe de pequeno porte da bacia hidrográfica do Munim, Leste do Maranhão, Brasil.

Rasbora baliensis (Hubbs & Brittan, 1954) is a native freshwater fish from Indonesia, which was described in East Java, Bali Island, and the West Lesser Sunda Islands. In the present paper, we reported on the presence of R. baliensis, which was collected from several new rivers in Java and East Lesser Sunda Islands. The specimen was identified as R...

Boletim Sociedade Brasileira de Ictiologia N 137 - ISSN 1808-1436

O presente e-book tem como objetivo apresentar um importante componente da biodiversidade maranhense: os peixes ornamentais do Rio Pindaré. Além disso, apresenta-se um guia ilustrado das potencialidades ornamentais dos estudos realizados por Guimarães et al. (2020 a, b) na drenagem do Rio Pindaré. Nestes trabalhos, foram amostrados 28 pontos d...

Lobocheilos falcifer is a rare and vulnerable freshwater fish species from Java, Indonesia and currently listed as Vulnerable (VU) within the IUCN Red List. In 2019, three specimens of L. falcifer were collected and photographed on Rawa Pening Lake, Semarang Regency, Central Java Province and Solo River, Karanganyar Regency, Central Java Province a...

Based on the information and evidence on the zoological expedition led by the senior Austrian zoologist Franz Steindachner in 1903, the examination of original species descriptions using material collected in this expedition, the scientific literature on this expedition, examination of specimens of Knodus victoriae, and the consultation of State de...

Recent field expeditions in the Jari river drainage, in addition to examination of uncatalogued poeciliids, allowed the identification of specimens as Poecilia (Pamphorichthys) scalpridens (Garman, 1895). The known range of this species includes lakes and igarapés in the lower reaches of tributaries near the main channel of the Amazon River between...

O presente estudo tem como objetivo apresentar um guia ilustrado e potencialidades ornamentais de espécies de peixes da Mata da Itamacaoca, uma das poucas áreas urbanas protegidas da bacia do alto rio Munim. Foram realizadas 42 expedições de coleta; a amostragem foi conduzida em cinco locais de coleta distribuídos dentro dos limites da Mata de...

Recent statements from the Brazilian federal government indicate that impacting economic activities, particularly commercial shrimp farming, are being encouraged in mangrove areas in the near future. Alterations of the National Action Plan and legal instruments that partially protected mangrove ecosystems have created an even weaker legal framework...

O capítulo 2 apresenta os resultados de 8 anos de inventário de peixes no entorno da Estrada de Ferro Carajás, nos estados Pará e Maranhão, Amazônia Oriental, Brasil.

The present study represents the first published record of Osteoglossum bicirrhosum for the State of Maranhão, from the Tocantins River basin, Brazil. Herein we present voucher numbers for the testimony material, as well as the accurate location where the specimens were collected. It is important to emphasize that several previous freshwater fish s...

Herein we provide detailed information from the Lectotype and Paralectotypes of Heros autochthon, and notice that is not possible to link this name to any putative Australoheros species, due to: the poor condition of the type material preservation, confusions related to the material storage, the little informative original description, and inaccura...

The poeciliid species, Poecilia kempkesi Poeser, 2013, was the fourth species of the subgenus Acanthophacelus Eigenmann, 1907 to be described, based on individuals from a single urban anthropized locality close to Paramaribo, Suriname (Poeser, 2013). The description itself lacked any section clearly distinguishing the new species from the remaining...

Recently an article entitled "A unique sex chromosome system in the Knifefish Gymnotus bahianus with inferences about chromosomal evolution of Gymnotidae" has presented the chromosomal structure of a Gymnotus population inhabiting the Contas River basin, eastern Brazil. We believed that the examined specimens were misidentified as G. bahianus. Henc...

A new species of Loricaria is herein described from the Turiaçu River basin, Eastern Amazon region, Maranhão state, Brazil, within the Maranhão Hydrological Unit (MHU). Loricaria turi differs from its congeners mainly by the following combination of characters: abdominal plate development confined to the posterior median region, pectoral girdle mos...

We investigate the diversity of thalloid liverworts in Parque Nacional da Chapada das Mesas (PNCM). Illustrations, descriptions, taxonomic characters, and notes on the geographic distributions of species, as well as an identification key, are provided. We collected specimens during the rainy seasons between 2017 and 2020. Six families, six genera,...