Science topic

Ichthyology - Science topic

All aspects of fish biology
Filters
All publications are displayed by default. Use this filter to view only publications with full-texts.
Publications related to Ichthyology (926)
Sorted by most recent
Article
Full-text available
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...
Technical Report
Full-text available
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...
Article
Full-text available
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...
Technical Report
Full-text available
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...
Poster
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Poster
Full-text available
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...
Conference Paper
Full-text available
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...
Book
Full-text available
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...
Article
Full-text available
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”,...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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....
Conference Paper
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
Brewer’s spent grain (BSG) is the largest by-product originated from the brewery industry with a high potential for producing carbohydrases by solid-state fermentation. This work aimed to test the efficacy of a carbohydrases-rich extract produced from solid-state fermentation of BSG, to enhance the digestibility of a plant-based diet for European s...
Article
Full-text available
The stunning sexual transformation commonly triggered by age, size or social context in some fishes is one of the best examples of phenotypic plasticity thus far described. To date our understanding of this process is dominated by studies on a handful of subtropical and tropical teleosts, often in wild settings. Here we have established the protogy...
Article
Full-text available
The Amazon is very important regarding the continental extractive fishing as it has the greatest diversity of freshwater fish in the world. Some factors can contribute to identify significant changes in fish production, such as characterization based on common names, and synonyms or classifications only at the genus level. This creates noise in dif...
Book
Full-text available
Quando se fala em ictiologia no Brasil, a primeira coisa que nos vem mente a bacia do rio Amazonas que, sem d vida, cont m a ictiofauna mais diversificada do mundo. Essa simples lembran a geralmente leva a maioria dos jovens icti logos brasileiros a estudar peixes de gua doce, enquanto a fauna de peixes marinhos recebe aten o relativamente menor. I...
Article
Full-text available
This study was conducted to determine the effects of dietary valine (Val) on growth, hemato-biochemical parameters, immunity, enzymatic activities, antioxidant status and expression of target of rapamycin (TOR) and 4E-BP genes in rainbow trout, Oncorhynchus mykiss (1.57 ± 0.03 g; 5.10 ± 0.34 cm) . Six isonitrogenous (450 g kg ⁻¹ ) and isoenergetic...
Article
Full-text available
To gain insight into pre-contact Coast Salish fishing practices, we used new palaeogenetic analytical techniques to assign sex identifications to salmonid bones from four archaeological sites in Burrard Inlet ( Tsleil-Waut ), British Columbia, Canada, dating between about 2300–1000 BP (ca. 400 BCE–CE 1200). Our results indicate that male chum salmo...
Article
Full-text available
Satellite-tracking of adult bumphead sunfish, Mola alexandrini, revealed long-distance latitudinal migration patterns covering thousands of kilometers. Horizontal and vertical movements of four bumphead sunfish off Taiwan were recorded with pop-up satellite archival tags in 2019–2020. Two individuals moved northward and traveled to Okinawa Island a...
Poster
Full-text available
This e-Poster was created for : HydroMediT 2021 4th International Congress on Applied Ichthyology, Oceanography & Aquatic Environment
Poster
Full-text available
This e-Poster was created for : HydroMediT 2021 4th International Congress on Applied Ichthyology, Oceanography & Aquatic Environment
Conference Paper
Full-text available
The aim of the current study was the molecular identification of a parasitic nematode found in the digestive system of a stranded Mediterranean monk seal (Monachus monachus) in the area of Pagasitikos Gulf in 2019.The body of the seal was transferred to the Laboratory of Hydrobiology and Ichthyology for a post-mortem examination. Analysis of the st...
Conference Paper
Full-text available
Reconstructing the phylogenetic relationships at different taxonomic levels of taxa using whole genomes became possible with next-generation sequencing (NGS) as a tool for screening mitochondrial and nuclear genomes. However, recently subsampling genome sequences using especially gene capture method, also known as target enrichment to capture and s...
Conference Paper
Full-text available
The wetlands of Poledokhtar Township are located at the foot of the Malekuh Mountain in the Zagros Mountain range, in the south of this township. Necessary preliminary studies were conducted to identify the diversity of various fish species and damage to fish diversity in the wetlands and Kashkan River from October 2020 to September 2021 at differe...
Article
Full-text available
Aquaculture threatens natural resources by fishing down the sea to supply fishmeal. Alternative protein sources in aquafeeds can provide a solution, particularly those that are waste from other operations and thereby reduce feed production costs. Toward this goal, we examined the waste biomass of marine periphyton from biofilters of an integrated m...
Article
Full-text available
Neotropical Ichthyology promotes the Special Issue (SI) “Human impacts and the loss of Neotropical freshwater fish diversity” with the purpose of publishing relevant scientific articles on the current biodiversity crisis and the loss of Neotropical freshwater fishes in the Anthropocene. The SI is composed of 22 publications, being two review articl...
Article
Full-text available
Because dams block migratory routes of potamodromous fish to their spawning areas, and energy generation changes natural flow seasonality, it is necessary to identify spawning areas and their conditions. This information will help in management decisions in the Magdalena River basin regarding the future hydropower development. We identified which c...
Article
Full-text available
Abstract Effects of a novel dietary mixture of selenium nanoparticles (Se-NPs) and omega-3-fatty acids i.e., Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on mitigating arsenic pollution, high-temperature stress and bacterial infection were investigated in Pangasianodon hypophthalmus. To aim this, four isocaloric and iso-nitrogenous di...
Article
Full-text available
To check if it is possible for crayfish to reduce the weed biomass in a paddy field, we hypothesised that crayfish can feed on common weeds in a paddy field. The feeding ability of red swamp crayfish, Procambarus clarkii, males and females for 4 weeds, Ludwigia prostrata Roxb., Leptochloa chinensis (L.) Nees, Echinochloa crusgalli (L.) Beauv and Ec...
Article
Full-text available
Hyperglycaemia damages the microvasculature in part through the reduced recruitment of immune cells and interference with platelet signalling, leading to poor wound healing and accelerated lipid deposition in mammals. We investigated the utility of zebrafish larvae to model the effect of exogenous glucose on neutrophil and macrophage recruitment to...
Article
Full-text available
Teleost fish skin serves as the first line of defense against pathogens. The interaction between pathogen and host skin determines the infection outcome. However, the mechanism(s) that modulate infection remain largely unknown. A proper tissue culture model that is easier to handle but can quantitatively and qualitatively monitor infection progress...
Article
Full-text available
Understanding how fish associate with habitats across marine landscapes is crucial to developing effective marine spatial planning (MSP) in an expanding and diversifying ocean economy. Globally, anthropogenic pressures impact the barely understood temperate mesophotic ecosystems and South Africa’s remote Amathole shelf is no exception. The Kei and...
Article
Full-text available
The current Special Issue of European Water with title "Water Resources and Environmental Management" consists of five papers selected from the 14th Conference of the Hellenic Hydrotechnical Association on Water Resources and Environment. The Conference was held in University of Thessaly, Volos, Greece in May 2019 at the facilities of the Departmen...
Article
Full-text available
We investigated the effects of low and high doses of β-conglycinin and the ameliorative effects of sodium butyrate (based on high-dose β-conglycinin) on the growth performance, serum immunity, distal intestinal histopathology, and gene, protein expression related to intestinal health in hybrid grouper ( Epinephelus fuscoguttatus ♀ × E. lanceolatus...
Article
Full-text available
This article is a redescription of Pimelodella longipinnis, an enigmatic catfish previously known only from its holotype and with uncertain type locality. The species is redescribed based on recently collected materials from streams of the Mata Atlântica bioregion, in Santos municipality, São Paulo State, Brazil. Pimelodella longipinnis is assigned...
Article
Full-text available
The phenotype of juvenile fish is closely associated with the adult phenotype, thus consisting an important quality trait for reared fish stocks. In this study, we estimated the correlation between the juvenile and adult body-shape in Gilthead seabream, and examined the genetic basis of the ontogenetic trajectories. The body shape of 959 pit-tagged...
Article
Full-text available
Precision fish farming is an emerging concept in aquaculture research and industry, which combines new technologies and data processing methods to enable data-based decision making in fish farming. The concept is based on the automated monitoring of fish, infrastructure, and the environment ideally by contactless methods. The identification of indi...
Article
Full-text available
Many species of sharks are threatened with extinction, and there has been a longstanding debate in scientific and environmental circles over the most effective and appropriate strategy to conserve and protect them. Should we allow for sustainable fisheries exploitation of species which can withstand fishing pressure, or ban all fisheries for sharks...
Article
Full-text available
Hyperspectral data encode information from electromagnetic radiation (i.e., color) of any object in the form of a spectral signature; these data can then be used to distinguish among materials or even map whole landscapes. Although hyperspectral data have been mostly used to study landscape ecology, floral diversity and many other applications in t...
Article
Full-text available
Electric fishing is an illegal hunting method, unfortunately widely used by poachers to paralyze fish and to catch many animals in a short time. In Italy, it is authorized only for scientific and conservative purposes. Between 2014 and 2018, the Ferrara section of the Experimental Zooprophylactic Institute of Lombardy and Emilia Romagna, Italy, rec...
Article
Full-text available
Direct tests of gene function have historically been performed in a limited number of model organisms. The CRISPR/Cas system is species-agnostic, offering the ability to manipulate genes in a range of models, enabling insights into evolution, development, and physiology. Astatotilapia burtoni, a cichlid fish from the rivers and shoreline around Lak...