Science topic
Ichthyology - Science topic
All aspects of fish biology
Publications related to Ichthyology (1,017)
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The main activities causing the degradation of fish stocks in the wild are over-exploitation and the use of destructive and unselective fishing gear. One strategic step is the development of conservation areas. Dissemination activities regarding the impacts of overfishing and the importance of developing conservation areas to support the sustainabi...
Ao longo de 29 anos, o Laboratório de Ictiologia da UFRGS tem monitorado aictiofauna do Guaíba, acompanhando as populações de peixes que ocorrem em diferenteslocais do lago. Este trabalho contou com vários colaboradores ao longo destas quase trêsdécadas, que participaram deste esforço continuado de coleta, triagem, análise eidentificação das amostr...
El Boletín del Postgrado en Ciencias-Biología (BPCB) de la Universidad del Valle, se fundó en 2015, ocho años después presentamos a nuestros lectores el volumen 10 del boletín, todo un hito de perseverancia que representa la continuidad y apoyo institucional a una publicación seriada que divulga las actividades y logros de la comunidad académica un...
In 1985, Carter and Cohen noted that there are several yet-to-be described species of Monomitopus (Ophidiidae), including one from Hawaiʻi. Recently, blackwater divers collected a larval fish off Kona, Hawaiʻi, similar to the previously described larvae of M. kumae, but DNA sequence data from the larva does not match any of the six previously seque...
Muestreos exploratorios para caracterizar coinfecciones por caligidosis, piscirickettsiosis, virus ISA y AGD en Salmo salar mórbidos en un centro de cultivo en Curaco de Vélez, Chiloé insular el 2011, y aparentemente sanos en otro centro en Hueihue el 2013, mostraron la presencia estacional de la amebiasis. Las muestras histopatológicas y de PCR en...
The conference aims at connecting researchers in the general area of Environmental Sciences, Atmosphere and Climate, to share their most recent results in investigation techniques and data analysis of Atmospheric Composition, Meteorological and Climate parameters, Remote sensing, Environmental Pollution and Restoration, Topography, Bathymetry, Ecol...
The Amazon River basins present distinct natural and anthropogenic characteristics that influence the structure of stream habitats and their associated biota. The influence of these characteristics can be evaluated through different spatial scales. We aimed to assess the influence (with and without the effect of spatial-geographical factors) of loc...
To analyze the differences between different-sized Acipenser dabryanus, we randomly selected 600 3-month-old A. dabryanus juveniles. Four months later, the blood and white muscle of these fish were analyzed. The results showed no significant difference in the length-weight relationship (LWR) b value between the large and small A. dabryanus. The lev...
When observed in their preferred environments, animals display behavioural changes, such as an increase in resting or a reduction in agonism, suggestive of positive affect and improved welfare. However, most studies focus on the behaviour of individuals or, at most, pairs of animals; even though in group-living animals beneficial environmental chan...
The evolution of freshwater fish diversity is multifaceted and driven by a number of mechanisms and factors. This makes freshwater fish a promising model for studying the processes of diversification and speciation, as well as of the environmental factors shaping their evolution. Current issue of Journal of Ichthyology is aimed to provide a platfor...
A mid-level data fusion coupled with multivariate analysis approach is applied to dual-platform mass spectrometry data sets using Rapid Evaporative Ionization Mass Spectrometry and Inductively Coupled Plasma Mass Spectrometry to determine the correct classification of salmon origin and production methods. Salmon (n = 522) from five different region...
El pez mulegino Abudefduf troschelii es un actinopterigio teleósteo del orden de los
Perciformes perteneciente de la familia Pomacentridae que se ubica en los arrecifes del
Golfo de California. Su temporada de reproducción en Baja California Sur empieza en
verano y continúa en otoño, siendo organismos ovíparos que mantienen los huevos
adheridos a s...
Trade restrictions for endangered elasmobranch species exist to disincentivise their exploitation and curb their declines. However, trade monitoring is challenging due to product variety and the complexity of import/export routes. We investigate the use of a portable, universal, DNA-based tool which would greatly facilitate in-situ monitoring. We c...
Trichomycterid catfishes have long been considered as absent in the Parnaíba River basin, Northeastern Brazil, in what constitutes their most conspicuous gap in geographic distribution. Herein we report on the first occurrence of the family in that basin. The new species is described from the riacho da Volta, right tributary to the upper rio Parnaí...
Controlling the food preferences of fish post-larvae after resorption of the yolk sac as well as their stocking density are the determining factors for the success of fry production. In order to contribute to the production of African snakehead fish, Parachanna obscura fry, a study was carried out from May 8 to June 17, 2022 at the Applied and Rese...
The size of Dunkleosteus and other late Devonian arthrodire placoderms has been a persistent problem in paleontology. The bony head and thoracic armor of these animals are typically the only elements preserved in the fossil record, with the rest of the body being lost during fossilization. Accurate length estimates of arthrodires are critical for r...
A new labrid fish, Terelabrus toretore sp. nov., the fifth species within the genus, is herein described from two specimens collected at a depth of 140 m from a mesophotic coral ecosystem in Tahiti, French Polynesia. Terelabrus toretore sp. nov. is characterized by having 43-44 scaled rows in longitudinal series; 42 pored lateral-line scales; 5+10...
Indonesia is one of the countries with the highest biodiversity and fish producers in the world. Demand for fish consumption in the world continues to increase, on the other hand, there is a threat of decreasing fish biodiversity in the wild due to overfishing, destructive fishing gear, water pollution, and others. This phenomenon occurs because of...
Fishes is an international, peer-reviewed, scientific, open access journal published monthly online by MDPI. It covers fishes and aquatic animals research. The Iberian Society of Ichthyology (SIBIC) and the Brazilian Society of Aquaculture and Aquatic Biology (Aquabio) are affiliated with Fishes and their members receive a discount on the article p...
Fishes is an international, peer-reviewed, scientific, open access journal published monthly online by MDPI. It covers fishes and aquatic animals research. The Iberian Society of Ichthyology (SIBIC) and the Brazilian Society of Aquaculture and Aquatic Biology (Aquabio) are affiliated with Fishes and their members receive a discount on the article p...
Este trabalho constitui-se de um relato do projeto de extensão Ferramentas de divulgação científica em ictiologia e conservação da bacia do rio Tocantins-Araguaia, desenvolvido pela Universidade Federal do Tocantins, campus de Porto Nacional. No contexto da divulgação científica e extensão universitária, o projeto objetivou apresentar a diversidade...
Abstract A new miniature species of Characidium is described from the midde rio Guaporé, rio Madeira basin, Rondônia, Brazil. The new species can be readily distinguished from all congeners by the sexual dichromatism, with females having narrow dark bars on body absent in males, and by the presence, in both sexes, of a black midventral dashed line...
Rainbow trout (Oncorhynchus mykiss) is the principal species of inland-farmed fish in the Western hemisphere. Recently, we diagnosed in farmed rainbow trout a disease in which the hallmark is granulomatous-like hepatitis. No biotic agents could be isolated from lesions. Still, unbiased high-throughput sequencing and bioinformatics analyses revealed...
In 2019, the tribute cycle called “Pioneers: the female scientists of the Museo Argentino de Ciencias Naturales” began as a new way of making notorious the role of women in science. This cycle, carried out by women of the Museum, seeks to recognize and honor the first women dedicated to scientific activities at the Institution. This fourth edition...
Sustained elevated levels of reactive oxygen species (ROS) have been shown to be essential for regeneration in many organisms. This has been shown primarily via the use of pharmacological inhibitors targeting the family of NADPH oxidases (NOXes). To identify the specific NOXes involved in ROS production during adult caudal fin regeneration in zebra...
En este artículo nos proponemos una revisión de trabajo citado el que consideramos entre unos de los más importantes de la extendida producción realizada por el Dr. Emiliano Mac Donagh. Esta obra al momento de su publicación ha trascendido el ámbito de la Ictiología, ya que el autor ha logrado realizar un singular aporte contextualizando el estudio...
La diversidad funcional permite ampliar la comprensión de los patrones de la biodiversidad y dilucidar procesos ecológicos que la promueven. En este estudio evaluamos la diversidad funcional de peces del género Orestias (Cyprinodontiformes, Cyprinodontidae) endémico de ecosistemas de agua dulce altiplánicos y considerado como especioso. Estimamos e...
In developing countries, advanced aquaculture techniques are still at the embryonic stage. This study was carried out from January to December 2021 in the ponds of the West Cameroon Region and at the Ichthyology and Applied Hydrobiology Research Unit of the University of Dschang with the aim of contributing to a better understanding of species rich...
Actualmente la información de parámetros de historia de
vida del Ispi es defi ciente existiendo vacíos sobre el conocimiento
de la biología y la dinámica de su población en el Lago Titicaca y
su relación con el medio. La presente investigación descriptiva y
retrospectiva con el objetivo general de determinar la variabilidad
de los parámetros de his...
"Peixe da Vez" published in Boletim - Sociedade Brasileira de Ictiologia.
Abiotic factors of the water environment are essential for the life of hydrobionts. They are determined by two main criteria – the intensity of the impact factor and the tolerance of each species. The work aims to substantiate the adaptive capabilities of this summer's koi carp (Cyprinus carpio koi) under the influence of low and high temperatures,...
Objetivos:
actualizar, sistematizar y evaluar el estado de la Colección de Peces (Ictiología) del Museo de Historia Natural de la Universidad de Caldas (MHN-UCa).
Alcance:
identificar fortalezas y debilidades en el proceso de curaduría de la colección para evitar su deterioro y garantizar su permanencia.
Metodología:
en primer lugar, se revisaron...
En este trabajo se realiza una revisión taxonómica de los peces de Galicia (Clases Cephalaspidomorphi y Elasmobranchi) a través de los distintos tratados y publicaciones ictiológicas publicadas a lo largo de la historia. Se listan un total de 83 especies, de las cuales 14 se consideran dudosas, al no estar su presencia suficientemente demostrada o...
In this work, a taxonomic revision of Galician fishes (Cephalaspidomorphi and Elasmobranchi classes) is carried out through the different treaties and ichthyologic publications published along history. A total of 83 species are listed, of which 14 are considered doubtful, as their presence has not been sufficieñtly demonstrated, or because their ta...
Oi, amigo. Tudo bem? Nós, do Laboratório de Ictiologia e Ordenamento Pesqueiro do Vale do Rio Madeira - LIOP, estamos felizes em poder estar junto com você para o desenvolvimento da pesca artesanal no rio Madeira, através do projeto ForestFisher e suas ações.
Desenvolver o setor de forma sustentável é o nosso principal objetivo e entender as muda...
Hypersaline estuaries are commonly found in the Semiarid Northeast Brazilian
coast. However, the utilization of these estuaries by early life stages of fishes is
less well documented. This study aimed to evaluate the effects of environmental
factors on the ichthyoplankton, and to describe their spatial and temporal
variation in two estuaries (Tubar...
Cambeva contains species with complex taxonomy or poorly delimitated in terms of morphology and geopraphic distribution. We conducted an extensive review of Cambeva populations from coastal drainages of Southern to Southeastern Brazil to evaluate species geographic limits with an integrative analysis including morphological and molecular data (COI)...
Boletim - Sociedade Brasileira de Ictiologia (1808-1436)
The aim of the current study was the molecular identification of a parasitic mite found in the cardio-respiratory system of a sub-adult Mediterranean monk seal individual, that was found stranded in the area of Pagasitikos Gulf, Greece in 2019. The body of the seal was transferred to the Laboratory of Hydrobiology and Ichthyology for a post-mortem...
O Herbário do Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupélia) da Universidade Estadual de Maringá (HNUP) é uma coleção botânica, localizada em Maringá (PR) e conta atualmente com acervo de aproximadamente 18.000 números. São realizadas atividades de pesquisa da flora ripária, algas perifíticas e fitoplanctônicas, principalment...
Bay snook (Petenia splendida) is a carnivorous cichlid species with excellent economic value in Southeast Mexico. Although this species presents an excellent potential for commercial aquaculture, the information about its nutritional, physiological, and reproductive metabolic pathways is meager. The current study focuses on the expression of glucos...
Cover related to the paper: “Barends, J. M., & Maritz, B. (2022b). Dietary specialization and habitat shifts in a clade of Afro-Asian Colubrid snakes (Colubridae: Colubrinae). Ichthyology and Herpetology 110(2): 278–291."
Esta Nota técnica foi elaborada em resposta ao Projeto de Lei (PL) número 614, do ano 2018 (PL614/2018), recentemente aprovado na Assembleia Legislativa do Estado de São Paulo (ALESP). Proposto pelo Deputado Estadual Carlos Eduardo Pignatari (Carlão Pignatari), presidente da ALESP, o PL614/2018 trata da regulamentação da pesca, embarque, transporte...
The feeding characteristics of splendid alfonsino Beryx splendens from the seamounts of the Whale Ridge have been studied. A wide range of food organisms in feeding of splendid alfonsino has been confirmed , comprising meso-and macroplankton of the sound-scattering layers of the mesopelagial. Benthic organisms have not been found in the food spectr...
Nota de repúdio contra o Projeto de Lei 614, de 2018, da Assembleia Legislativa do Estado de São Paulo, que dispõe sobre a pesca, o embarque, o transporte, a comercialização e o processamento dos tucunarés Cichla spp. e dá outras providências. A comunidade científica, representada por doutores, mestres, pesquisadores, biólogos, engenheiros de pesca...
Climate change is causing a northward shift of fish species and the tropicalisation of temperate zones. In this context, the toadfish Halobatrachus didactylus was found for the first time in 2018 in Galician waters (NW Spain), where a total of 39 specimens have been recorded so far in the southernmost part of those known as Rías Baixas. Preliminary...
Non-native predators are known to cause ecological impacts through heightened consumption of resources and decimation of native species. One such species is Micropterus salmoides. Often introduced for sport fishing worldwide; it has been listed by International Union for Conservation of Nature and Natural Resources as one of the 100 of the world’s...
A new species of Ammoglanis is described from the rio Aruri Grande, rio Jamanxim drainage, a right bank tributary to the middle rio Tapajós, Pará State, Brazil. The new species is identified and defined through morphological characters such as color pattern, consisting of eight or nine transverse dark bars regularly spaced along the dorsum; skeleta...
Modeling Long-Term Changes in Atlantic Salmon Abundance in the Ulla River (Galicia—Spain) through Multivariate Time-Series Analysis
† Esteban L. Alvarez-Romero 1,*,‡, Marcos Barrio-Anta 2 , Carlos Garcia de Leaniz 3, Pablo Caballero 4 and Paloma Moran 5
1 DIRENA, Indurot-Institute of Natural Resources and Territorial Planning, Universidad de Ovied...
A fourth species of the genus Rhonciscus (Lutjaniformes: Haemulidae) is described from various specimens collected by small-scale fishers from the insular upper slope of western Puerto Rico. The new species was molecularly recovered as sister to the Eastern Pacific R. branickii , to which it bears many morphological similarities. It is distinguishe...
The species of Hypostomus from the Parnaíba River basin were reviewed through molecular and morphological analysis. Five species were found in the basin, including a new species herein described. The distribution of H. pusarum was expanded to this basin, and a closely related species was recorded (H. aff. pusarum), also the presence of H. johnii an...
La technique d’expertise moléculaire selon l’approche ADN environnemental (ADNe) est en pleine expansion cette dernière décennie, notamment dans le milieu aquatique (e.g., Belle et al., 2019 ; Garlapati et al., 2019). Elle permet de détecter des espèces rares, de suivre la progression des espèces exotiques envahissantes, ou de réaliser des inventai...
La recherche sur la navigation préhispanique est une étude transversale sur un ensemble de pratiques culturelles qui peuvent prendre des formes variées mais ont en commun la confrontation au milieu aquatique, qu'il soit maritime, lacustre ou fluvial. En l'absence d'épaves préhispaniques conservées et de sources écrites pour les périodes les plus an...
"Peixe da Vez" published in Boletim - Sociedade Brasileira de Ictiologia.
With the the support of the University of Guilan and the Iranian Society of Ichthyology, the "Ninth National and the First International Iranian Conference of Ichthyology" with the goal of exchanging ideas, synergy and updating knowledge in various areas of fish biodiversity, conservation of native fish species and protection of aquatic ecosystems...
Polymorphisms have fascinated biologists for a long time, but their genetic underpinnings often remain elusive. Here, we aim to uncover the genetic basis of the gold/dark polymorphism that is eponymous of Midas cichlid fish (Amphilophus spp.) adaptive radiations in Nicaraguan crater lakes. While most Midas cichlids are of the melanic “dark morph”,...
Atlantic salmon aquaculture is expanding, and with it, the need to find suitable replacements for conventional protein sources used in formulated feeds. Torula yeast ( Cyberlindnera jadinii ), has been identified as a promising alternative protein for feed and can be sustainably cultivated on lignocellulosic biomasses. The present study investigate...
Herein, the effect of dietary inclusion of insect ( Tenebrio molitor ) meal on hepatic pathways of apoptosis and autophagy in three farmed fish species, gilthead seabream ( Sparus aurata ), European seabass ( Dicentrarchus labrax ) and rainbow trout ( Oncorhynchus mykiss ), fed diets at 25%, 50% and 60% insect meal inclusion levels respectively, wa...
The Barcode of Life initiative was originally motivated by the large number of species, taxonomic difficulties and the limited number of expert taxonomists. Colombia has 1,610 freshwater fish species and comprises the second largest diversity of this group in the world. As genetic information continues to be limited, we constructed a reference coll...
The current study was conducted to evaluate the healing aspect of skin fish collagen on the infected wound in local rabbits. A total of 16 mature animals were divided equally as control and treated groups. Lidocaine 2 % subcutaneously was used as a local anesthetic at the operative site, followed by surgical incision bout 3*4 cm induced full skin w...
The doncella Pseudoplatystoma punctifer is an economically and ecologically important catfish in the Amazon basin. However, little is known about its age, growth and population dynamics parameters. This study aims to validate the formation of growth marks in vertebrae of individuals collected from two rivers systems of the Peruvian Amazon (Amazon-M...
Врожденные пороки - это описательный термин, обозначающий
состояние, существующее при рождении; следовательно, врожденные
пороки развития или врожденные деформации определяются как аномалии
строения, присутствующие при рождении. Врожденные пороки или врожденные аномалии и дефекты включают как функциональные, так и
морфологические недостатки. Ан...
The Yacyretá Nature Reserve (YNR) is located in the extreme south of Paraguay, to the west of the Yacyretá dam, covering approximately 8,481 hectares. It has lagoons of artificial origin of permanent water, as a result of the removal of earth material for the construction of the Yacyretá Binational Dam on the Paraná River. The objective was to surv...
Comunitat de macroparàsits de la barracuda del Pacífic Sphyraena ensis Jordan and Gilbert, 1882 (Perciformes, Sphyraenidae) de la costa nord del Perú
L’objectiu d’aquest estudi és informar sobre la comunitat de macroparàsits de la barracuda del Pacífic Sphyraena ensis Jordan and Gilbert, 1882 (Perciformes, Sphyraenidae) de la costa nord del Perú....
Neyelov A.V., Sirenko B.I., Smirnov I.S., Maximovich N.V. 2021. Graduates of the Department of Hydrobiology and Ichthyology, St. Petersburg (Leningrad) University in Antarctic // Materials of the XXII anniversary scientific seminar "The Department of Ichthyology and Hydrobiology is 90 years old" (St. Petersburg State University, Department of Ichth...
Selection, genetic drift, and gene flow affect genetic variation within populations and genetic differences among populations. Both drift and selection tend to decrease variation within populations and increase differences among populations, whereas gene flow increases variation within populations but leads to populations being related. In brown tr...
Rays of the superorder Batoidea comprise the most diverse group of chondrichthyans in terms of valid species and morphological disparity. Up to the present little agreement is observed in studies based on morphological and molecular data focused on uncovering the interrelationships within Batoidea. Morphology-based phylogenies of batoids have not i...
This paper analyses the historical knowledge of marine ichthyology in Galicia through an interdisciplinary approach that integrates information from diverse sources of documented information. The history of ichthyology has evolved with the way humans relate to the natural world. The study of activities related to marine fish as an important source...
The Itaipu Hydroelectric Power Plant is the second largest in the world in power generation. The artificial barrier created by its dam imposes an obstacle for fish migration. Thus, in 2002, a fish pass system, named Piracema Channel, was built to allow fish to access areas upstream of the reservoir. We tested the potential of environmental DNA meta...
O presente estudo visa descrever e mensurar o tubo digestório da espécie Acestrorhynchus lacustris. Foram utilizados 10 exemplares da espécie, coletados em diferentes trechos da bacia hidrográfica do rio de Ondas, localizada no Oeste do Estado da Bahia, na ecorregião aquática do rio São Francisco. Foram realizadas mensuração e pesagem dos peixes. A...
