Flavia Lucena Frédou

Flavia Lucena Frédou
Universidade Federal Rural de Pernambuco | UFRPE · Department of Fisheries and Aquaculture

Phd Fishery Science

About

160
Publications
60,983
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2,041
Citations
Citations since 2016
94 Research Items
1590 Citations
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300
20162017201820192020202120220100200300

Publications

Publications (160)
Article
Full-text available
In the Southeastern Tropical Atlantic, Haemulidae family play an important role both environmentally, acting as a link between lower and higher trophic levels, and socioeconomically, being widely caught by artisanal fleets. This study aimed to describe the trophic ecology of three grunt species (Haemulon aurolineatum, H. plumierii and H. squamipinn...
Article
Full-text available
Mesopelagic fishes play critical ecological roles by sequestering carbon, recycling nutrients, and acting as a key trophic link between primary consumers and higher trophic levels. They are also an important food source for harvestable economically valuable fish stocks and a key link between shallow and deep-sea ecosystems. Despite their relevance,...
Article
A trophic web is a network of complex interactions and energy links between species. These interactions can be simplified into trophodynamic models, such as Ecopath (EP) and EcoTroph (ET), important tools providing the holistic view needed for the ecosystem approach to fisheries. We describe food web structure and trophic interactions by developing...
Article
Full-text available
The Stomiiformes includes about 455 species of mostly mesopelagic fishes in the families Diplophidae, Gonostomatidae, Phosichthyidae, Sternoptychidae, and Stomiidae. Here we report 55 species of the order collected during the ABRACOS (Acoustics along the BRAzilian COaSt) expeditions off northeastern Brazil, including islands and seamounts of Fernan...
Article
Full-text available
Here we report on new data on the occurrence and distribution of rare deep-sea fishes (Teleostei) collected from off northeastern Brazil, including seamounts and oceanic islands of the Fernando de Noronha Ridge (Rocas Atoll and Fernando de Noronha Archipelago). Collections were made by the French RV Antea during the ABRACOS (Acoustics along the BRA...
Article
The lack of knowledge about highly anthropised tropical ecosystems poses a problem for their conservation. Using carbon and nitrogen stable isotopes, we studied the food web structure of the estuarine ecotone of the Santa Cruz Channel (SCC), which constitutes a critical habitat for many socio-economically important species in northeast Brazil. Ther...
Article
Microplastics (MPs) are widely distributed in marine ecosystems, and their ubiquitous presence is raising concern, particularly about possible impacts on fisheries resources. In tropical regions, shellfish fisheries represent an essential source of income and subsistence for traditional communities, and adverse effects on these resources may have s...
Article
Full-text available
The shorthead drum Larimus breviceps has an important role in the subsistence of local communities. However, studies addressing the trophic ecology of this species are still scarce. Here we present further information on the trophic ecology and ecomorphology of L. breviceps, including dietary analyses, carbon and nitrogen stable isotopes compositio...
Article
Tropical fisheries tend to be multispecies and require management approaches adapted to high diversity but scarce and poorly informative data. Productivity and Susceptibility Analysis-PSA is particularly useful where catch or biological data are incomplete, aggregated across species or insufficient for quantitative stock assessment. We applied PSA...
Article
Microplastics (MPs; <5 mm) are a macro issue recognised worldwide as a threat to biodiversity and ecosystems. Widely distributed in marine ecosystems, MPs have already been found in the deep-sea environment. However, there is little information on ecological mechanisms driving MP uptake by deep-sea species. For the first time, this study generates...
Article
Microplastics are a relevant environmental concern in marine ecosystems due to their ubiquity. However, knowledge on their dispersion patterns within the ocean basin and the interaction with biota are scarce and mostly limited to surface waters. This study investigated microplastic contamination in two species of deep-sea cephalopods from the south...
Article
Full-text available
The aim of this scientific note was to evaluate the influence of the coastal current on the estimation of relative abundance indices for small-scale marine shrimp trawling to indicate the best relative abundance index to be used for stock assessment and conservation. Georeferenced experimental trawls were carried out with standardized equipment and...
Preprint
Full-text available
The present study aimed at evaluating the environment quality of the Santa Cruz Channel estuary (area 1) and Sirinhaém river estuary (area 2), Northeastern Brazil, using histopathological biomarkers of liver and gills of fish species with different trophic levels as indicators. It was collected liver and gills from five species: Bairdiella ronchus...
Article
This study uses Brazil's export data for fish byproducts as a proxy for understanding trends in maw (swim bladder) trade on the Amazon coast. National exports totaled 4657.9 metric tons (t) and USD 163,476,733 from 2012 to 2020, with 21 countries or territories listed as importers and China accounting for 97% of the total volume. Annual export volu...
Article
The shorthead drum Larimus breviceps is one of the main bycatch species of the shrimp fisheries in Brazil. However, studies addressing the biology and fisheries impacts on this species are still scarce. Here we describe the main aspects of the reproductive biology and the female gonadal development of L. breviceps on Paraíba, northeast Brazil. The...
Article
Lanternfishes (Myctophidae) are among the most abundant, widespread, and diverse fish groups in the world ocean. They account for a significant part of oceanic fish biomass and play crucial roles in various ecosystem processes, including carbon sequestration and nutrient recycling. However, despite the increasing risks they face (e.g. global warmin...
Article
Full-text available
Despite being an important source of wealth and food security for many countries, most of the small tuna stocks in the Atlantic Ocean and Mediterranean Sea remain unassessed. In this study, we summarized the current state of knowledge of this group of species reviewing the information available on life history parameters, stock structure, historica...
Chapter
Full-text available
A costa do Estado do Maranhão possui uma grande concentração de peixes, e entre eles encontram-se os elasmobranquios. O estudo da biodiversidade e dinamica populacional de elasmobranquios é de fundamental importancia para a sustentabilidade e manutenção das espécies exploradas, assim como para o ordenamento das atividades pesqueiras Durante os anos...
Article
The objective of this study was to analyse the feeding habits and trophic interactions between four oceanic predatory fish around the Fernando de Noronha Archipelago (FNA), Brazil, in the western equatorial Atlantic (3.86°S/32.42°W), internationally recognised as an environment of high economic and ecological value. For this purpose, biological sam...
Article
Full-text available
Tropical small-scale fisheries (SSFs) are characterised by their multidimensionality (fleets, gears, habitats, and species). As many targeted species move between habitats throughout their life cycle, managing coexisting fleets exploiting the same resource is challenging. However, the SSFs operating over multiple habitats target a variety of specie...
Article
Full-text available
The deep-sea anglerfishes of the suborder Ceratioidei (Lophiiformes) are represented by about 170 valid species with some of the most extraordinary morphological and reproductive adaptations among vertebrates, including extreme sexual dimorphism and male parasitism. Here we report on the diversity and distribution of rare ceratioids collected durin...
Article
Full-text available
Despite the increasing number of studies on the systematics of the Stephanoberycoidei (bigscales, pricklefishes, gibberfishes, hispidoberycids, and whalefishes) globally, knowledge about the diversity and distribution of the group in the western South Atlantic still remains fragmentary. In this study, we present new anatomical (meristic and morphom...
Article
Marine ecosystems are reported to be contaminated by microplastics (MPs) (< 5 mm); however, the ecological mechanisms involved in the ingestion of debris by marine organisms are relatively unknown. By developing and optimising an appropriate protocol of gut digestion for fish species, this study explores a tropical estuarine environment to unriddle...
Article
Jacks are highly prized tropical marine fish. Most of them complete their whole life cycle at sea but some use estuaries at the juvenile stage before moving back to coastal waters and joining the adult exploited stocks. Little is known about jacks’ trophic ecology in estuaries, although their juveniles' ability to successfully exploit available res...
Book
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This catalog was developed by the project Sustainable Management of Bycatch in Latin America and Caribbean Trawl (REBYC II - LAC) funded by the Global Environment Facility (GEF) and coordinated by the Food and Agriculture Organization of the United Nations (FAO), to whom we are very thankful for all the support. The project includes Brazil, Colombi...
Article
Global shrimp catches are reported primarily in association with large industrial trawling, but they also occur through small-scale fishing, which plays a substantial role in traditional communities. We developed an Ecopath model in north-eastern Brazil, and applied a temporally dynamic model (Ecosim) to evaluate the potential effects of different...
Article
Full-text available
We used complementary stable isotope (SIA) and stomach content (SCA) analyses to investigate feeding relationships among species of the nektobenthic communities and the potential ecological effects of the bottom trawling of a coastal ecosystem in northeastern Brazil. Carbon (δ13C) and nitrogen (δ15N) compositions were determined for five basal sour...
Article
Coastal habitats are interlinked by ecological connectivity, defined as the exchange of organic matter or organisms between habitats. The degree of this connectivity will depend in particular on the geometric properties of the landscape. The increasing anthropogenic alterations in estuaries therefore raises the need to understand how their morpholo...
Article
Bottom trawling is a common fisheries method and also a widespread scientific sampling method for benthic and demersal species. Selectivity and catchability are usually estimated using different meshes and studies with alternative methods are rare. In this study, to improve the estimation of trawl selectivity, we compare bottom trawl catches and re...
Article
Full-text available
Mesopelagic fishes are numerically the most important vertebrate group of all world’s oceans. While these species are increasingly threatened by anthropogenic activities, basic biological knowledge is still lacking. For instance, major uncertainties remain on the behaviour, ecology, and thus functional roles of mesopelagic micronektivores, particul...
Article
A multidisciplinary assessment of the sustainability status of 11 coastal small-scale fishery systems in the Brazilian Amazon was performed using the Rapfish method with 31 indicators representing six evaluation fields (ecological, economic, ethical, institutional, social, and technological). The method employs a constrained multidimensional scalin...
Article
Full-text available
New data on the taxonomic composition and distribution of rare deep-sea species of the Bathylagidae, Microstomatidae, and Opisthoproctidae (Argentiniformes) collected off northeastern Brazil, including the Rocas Atoll, the Fernando de Noronha Archipelago, and seamounts off Rio Grande do Norte State are provided. Collections were made by the French...
Article
Full-text available
Length-weight relationship parameters were calculated for twelve mesopelagic fish species from the western Tropical Atlantic: Diretmus argenteus, Melamphaes polylepis, Bolinichthys distofax, Diaphus lucidus, Diaphus splendidus, Electrona risso, Hygophum taaningi, Taaningichthys bathyphilus, Melanolagus bericoides, Winteria telescopa, Diplophos taen...
Article
Species of the family Sternoptychidae (hatchetfishes) occur worldwide and play critical roles by sequestering carbon, recycling nutrients, and acting as a key trophic link between epipelagic primary consumers and higher trophic levels in marine ecosystems. Nevertheless, basic knowledge on their ecology is still lacking and their functional ecology...
Article
Full-text available
This study provides information about the feeding habits, population aspects and spatial distribution of the spot­ted goatfish, Pseudupeneus maculatus, along the coast of the tropical Brazilian continental shelf. Distribution patterns are described using length frequencies and catch rates. Stable isotope ratios of carbon (δ13C) and nitrogen (δ15N),...
Article
Full-text available
This report describes the 2020 ICCAT workshop on small tunas biology studies for growth and reproduction, hosted by the Instituto Español de Oceanografía, Málaga, Spain. The major objectives of the workshop were: 1) starting the creation of ageing and reproduction reference sets and, 2) providing more training for the ongoing sample collection and...
Article
This study examines the characteristics of small-scale fisheries in the state of Amapá (Brazilian Amazon coast), including the production processes, the structure and operation of the value chain, and the drivers of fish trade and resource exploitation. Interviews were held with fishers, boat owners, the presidents of fishers’ organizations, and pr...
Article
Full-text available
1. Tetraodontiformes fishes play a critical role in benthic and demersal communities and are facing threats due to anthropogenic impacts and climate change. However, they are poorly studied worldwide. To improve knowledge on the socio-ecological significance and conservation of Tetraodontiformes a review of literature addressing the diversity, ecol...
Article
Full-text available
Although the information on fish ecology and population dynamic are fundamental for fisheries assessment and the development of sustainable management practices, there is still a gap for bycatch species, mainly in tropical coastal areas. The aim of the presently reported study was to describe the feeding habitats, mean length of maturation, and the...
Article
Full-text available
This study reports the occurrence of the oceanic basslet (Howellidae) in Brazilian waters. Bathysphyraenops simplex Parr, 1933, a rare species with a worldwide distribution, is recorded for the first time in Brazilian waters, based on three specimens collected off Rocas Atoll and Rio Grande do Norte. Howella atlantica Post & Quéro, 1991, known from...
Conference Paper
Full-text available
Haemulon plumierii, also known as white grunt, belongs to the family Haemulidae and it is distributed along the entire west coast of the Atlantic Ocean, being commonly associated with coral areas. It is considered one of the most abundant species in the family and is widely captured by artisanal fisheries, mainly through fish traps. However, despit...
Conference Paper
Full-text available
Fishes of the Haemulidae family, commonly known as grunts, are a relevant portion on the artisanal fisheries, having significant socioeconomic importance in the Northeast of Brazil. They also play a crucial ecologic role on the trophic chain and in the nutrient’s distribution through different environments, besides that, they are one of the most di...
Conference Paper
Full-text available
Shrimp trawling is one of the most important fisheries on the northeast Brazilian coast. Despite its great importance for the economic sector of the region, this type of fishing is also one of the most harmful to marine fauna given the high capture of accompanying fauna and the capture of juveniles. Thus, this study aimed to describe, quantify and...
Conference Paper
Full-text available
The Feeding of Sphyraena barracuda was investigated through analysis of stomach contents of 124 individuals caught with rod and reel employed in trolling fisheries in Fernando de Noronha. The results are represented in prey lists and graphical representations of the Relative Importance Index (IRI), which shows a varied food spectrum, but with signi...
Technical Report
Full-text available
Case study for Western (Brazil) and Eastern (Cape Verde, Senegal) tropical Atlantic countries, information on marine and coastal natural resources and their use and exploitation status
Article
The perceptions and knowledge of fishers are very important for fisheries management, especially in data-poor regions such as the Amazon coast of Brazil. Here, the perceptions of fishers were used to analyze the main conflicts faced by small-scale fisheries and to identify the status of fishery resources in the state of Amapá (Brazil). Data from in...
Article
The manefishes of the family Caristiidae are rare, poorly known deep-sea species with broad geographical distribution. This study provides new information on the diversity and distribution of this family around the oceanic islands and seamounts off northeastern Brazil, reporting the first records of Paracaristius nudarcus, Platyberyx andriashevi, P...
Article
Full-text available
Despite the economic importance of small tunas (SMT) in many small-scale fisheries in the Atlantic, these populations remain unassessed because data are insufficient to perform traditional stock assessments. In such data-limited situations two main quantitative approaches, based on data availability, can be used to assess exploitation status: catch...
Article
Full-text available
This paper presents a preliminary exercise of Management Strategy Evaluation (MSE) using the DLMtool toolkit to test the performance of a variety of management procedures (MPs) for the Northwest Atlantic wahoo. In this analysis, nine management procedures (MP) were selected to be included in the MSE run in order to evaluate the performance of each...
Article
We investigated the trophic niches and the resource partitioning of two snook species, the common (Centropomus undecimalis) and the fat snook (C. parallelus), in four tropical estuaries of the northeastern Brazil, using stable isotope analyses of carbon (δ13C) and nitrogen (δ15N). Fish specimens, mainly juveniles, basal resources and a primary cons...
Article
Full-text available
Ecological guilds have been widely applied for understanding the structure and functioning of aquatic ecosystems. This study describes the composition and the spatio-temporal changes in the structure of the fish fauna and the movements between the estuary and the coast of a tropical estuary, the Itapissuma/Itamaracá Complex (IIC) in northeastern Br...
Article
Estuarine environments gather pollution from large regions including urban and industrial zones. The monitoring of environmental quality in these areas constitutes a real requirement for global sustainable development. Therefore, the aim of this study was to characterize the physicochemical and kinetic parameters of brain acetylcholinesterase (AChE...
Article
Full-text available
The aim of the present study was to investigate the reproductive dynamics of the Litopenaeus schmitti through macroscopic and microscopic analyses. Specimens were collected monthly from December 2016 to November 2017 through artisanal beach seine fishery in the municipality of Lucena, state of Paraíba, Brazil. A total of 1710 shrimp were caught and...
Article
Large scombrids, commercial tuna species, are regularly assessed and managed. However, most of the small scombrids, many mackerels and bonitos, lack accurate catch data to implement traditional stock assessments despite their economic importance in many small-scale fisheries. In this study, we analysed different approaches using length composition...
Article
Full-text available
The shrimp trawl fisheries are highly efficient in capturing target species but is an unselective gear that commonly catches untargeted organisms, which are usually discarded due to their small size or no commercial value. To understand and, eventually, mitigate the impacts of trawling on bycatch species, the whole capture should be addressed. The...