Dimitrios K. Moutopoulos

Dimitrios K. Moutopoulos
University of Patras | UP · Fisheries & Aquaculture (Mesolongi)

PhD
Fish and fishery resources in ecosystem-based approach, fisheries data quality and EU legislation affairs.

About

125
Publications
45,182
Reads
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2,791
Citations
Citations since 2017
65 Research Items
1590 Citations
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Introduction
Professional background on scientific research, education and administration of fisheries. Experience on the structure and function of fish dynamics and fisheries of aquatic ecosystems (open sea, coastal zone, lagoons and inland waters) and dissemination of fisheries-related information amongst professionals (fishermen, scientists and administration).
Additional affiliations
October 2019 - present
University of Patras
Position
  • Professor (Associate)
May 2019 - September 2019
University of Patras
Position
  • Professor (Assistant)
March 2008 - April 2019
Technological Educational Institute of Western Greece
Position
  • Lecturer
Description
  • Educational activities on aspects related with Fish and Fisheries. Research activities to promote the conservation and management of fisheries in relation with anthropogenic impacts in freshwater, lagoons and open sea systems.

Publications

Publications (125)
Article
In fisheries management it is essential to evaluate the effectiveness of marine protected areas (MPAs), understand the shortcomings and limitations of MPAs and propose measures to improve their functioning. Information provided by local fishers and monitoring by the managers were evaluated to depict insights and identify deficiencies in the fishery...
Article
Full-text available
Non- indigenous species (NIS) are spreading and reshaping Mediterranean Sea bio- logical communities and fishery resources. The present study used fisheries data and structured interviews to assess the impacts of NIS on recreational and commercial fishers in Cyprus. NIS that have been present in Cyprus for more than two decades were mostly perce...
Article
Full-text available
Greece exhibits the lowest seafood per capita consumption amongst European Mediter- ranean countries, and the investigation of consumer attitudes to new seafood products would bridge the gap among producers and consumers by promoting the vertical integration of the supply chain. However, limited information exists about consumer preferences for biv...
Article
Full-text available
A few studies have used historical inland fisheries data for defining reference points necessary for fisheries management. We developed a historical baseline of catches for inland fisheries of Greece during 1928–2019, with the interwar period (1928–1939), a period of intense political and socio-economic turmoil, serving as a pre-development referen...
Article
Full-text available
The lack of historical data on shark presence, distribution, and status in the Eastern Mediterranean undermines efforts to manage and protect their populations. An exhaustive review of anecdotal references related to shark presence during the early and development phase of Greek fisheries (1883–1983) was conducted. In the early-20th century (1912),...
Article
Full-text available
The present study investigates through an integrated survey, for the first time in Greek shellfish market, the marketing distribution towards a new edible shellfish product that of the non-indigenous pearl oyster Pinctada imbricata radiata. The survey conducted through personal interviews on sector entrepreneurs/staff of the supply (i.e., shellfish...
Article
Full-text available
An exhaustive review of anecdotal references related to dolphin-fishery information in the Greek seas during the early phase of fishery development (1900-1975) was conducted. In that period fishers perceived dolphins as competitors and would intentionally kill them in retaliation for the loss that the dolphins caused by obstructing fishing operatio...
Article
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Epidermal conditions, traumatic marks, deformities, and unusual body pigmentation were visually assessed on common bottlenose dolphins (Tursiops truncatus) using photo-identification and sightings data collected between 2007 and 2018 in Welsh waters. The goals of this study were to describe and categorize external body conditions, in particular, an...
Article
Trace elements have the potential to bioaccumulate in marine organisms and to biomagnify towards the upper levels of marine trophic webs, resulting in a range of negative effects on organisms. Elasmobranchs are highly susceptible to bioaccumulation of trace metals, while their consumption by humans is increasing worldwide. Therefore, it is importan...
Presentation
Full-text available
More than 1/3 of the chondrichthyans species are threatened with extinction globally as the demand for elasmobranch products is increasing due to (i) commercial fish stock overexploitation, (ii) the emerging demand for seafood and protein, and (iii) the increasing finning regulations that triggers the creation of new shark meat markets. Despite tha...
Article
Full-text available
The present study uses fisher knowledge to outline the basic socioeconomic framework of Albanian lagoon fisheries based on on-the-spot interviews conducted with fishers operating in the most important Albanian lagoons. The results indicated that Albanian lagoon fisheries were family-based, with spatial differences observed in vessels from the north...
Poster
Information on the feeding habits of elasmobranchs is of fundamental importance to understand their ecological role in the ecosystem. The study area (Ambracian Gulf) is a semi-closed embayment in Western Greece, characterised by shallow depths, muddy bottom, high freshwater influx, and hypoxia phenomena. It is considered a hotspot for megafauna hos...
Poster
Collaboration with small-scale fisheries of the Ambracian Gulf sheds light on the understudied elasmobranch diversity of the area. The Ambracian Gulf, a semi-closed embayment in northwestern Greece, is characterized by peculiar abiotic conditions including seasonal thermal shocks, eutrophic conditions, hypoxia and anoxia in depths below 15m in the...
Poster
In the Mediterranean Sea more than half of elasmobranchs are facing high extinction risk. Batoids and sharks are jeopardized by human activities, in particular fishing. The Ambracian Gulf is a semi-closed basin in the north-west of Greece, and although is considered an area of high ecological importance, there are no studies on impacts of small-sca...
Article
Full-text available
Non-indigenous fish species (NIFS) are spreading in the Mediterranean Sea, altering species assemblages and reshaping the marine ecosystems. Market-based approach has been promoted as a measure to limit the spread and damages by the NIFS and provide economic revenues to fishers. Understanding drivers of NIFS consumption and documenting consumers' h...
Article
Full-text available
Accurate checklists of species are essential for evaluating their conservation status and for understanding more about their distribution, biology and ecology and, therefore, the first step in order to effectively protect them. According to the existing literature, the Greek seas are rich in chondrichthyan biodiversity and herein, we update the mos...
Technical Report
Full-text available
STECF review and advice on 2 ad hoc contracts aimed to quantify fishing activity with mobile bottom-contacting fishing gears that is deployed within marine protected areas, with respect to effort, catches and the first-sale value of the catches.
Article
Full-text available
The lack of reliable fisheries statistics hampers full assessment of the status of marine resources. Central to this problem are data-poor fisheries such as the Albanian seas and in particular the SSF sector. The present study aims to portray the small-scale fishery of south Albanian waters based on daily onboard monitoring of fisheries species cat...
Article
Full-text available
The current study provides valuable insight into the ecological risks and decline of the bivalve fishery and biodiversity in the Amvrakikos Gulf over the last 50 years through a triangula-tion of information from in situ surveys and expert judgment, supplemented with historical archives. In situ sampling showed that bivalve species composition was...
Article
Full-text available
Total length-weight relationships (LWRs) from 3583 individuals of Atherina boyeri (Risso, 1810) caught in Lake Trichonis (Western Greece), using a commercial encircled net and experimental Nordic type benthic and pelagic multi-mesh gillnets, were estimated during 2019-2020. The variation of the parameter b for all seasons combined was significantly...
Article
Full-text available
Abstract: An Ecopath with Ecosim (EwE) modeling approach was used to explore the ecological structure of the largest lake in Greece (Lake Trichonis). Until the mid-1990s, the lake was receiving a high level of pollution and the fishing pressure was intense, while since the early 2000s, fisheries and other human pressures gradually declined. Nowaday...
Article
Sharks are among the oldest residents of the planet, they possess a unique value as top predators and constitute irreplaceable elements of marine ecosystems. Unfortunately, contemporary narratives widely presented in popular mainstream media have attached an utterly negative connotation to sharks, propagating an unsubstantiated and fabricated image...
Article
Full-text available
The Mediterranean Sea has a long-lasting history of fishery exploitation that, together with other anthropogenic impacts, has led to declines in several marine organisms. In particular, elasmobranch populations have been severely impacted, with drastic decreases in abundance and species diversity. Based on their experience, fishers can provide info...
Article
Full-text available
Chondrichthyans are apex predators influencing the trophic web through a top-down process thus their depletion will affect the remaining biota. Notwithstanding that, research on chondrichthyans is sparse or data-limited in several biogeographic areas worldwide, including the Levantine Sea. We revise and update the knowledge of chondrichthyans in Cy...
Technical Report
Full-text available
This publication is a Science for Policy report by the Joint Research Centre (JRC), the European Commission’s science and knowledge service. It aims to provide evidence-based scientific support to the European policymaking process. The scientific output expressed does not imply a policy position of the European Commission. Neither the European C...
Article
Elasmobranchs are sensitive marine species due to their K-strategic life characteristics in combination with the intensification of fisheries. Despite the regulations and conventions protecting several species, elasmobranchs are still caught as bycatch and landed throughout the Mediterranean, a location where the pressure on shark populations is we...
Conference Paper
Full-text available
Olga Petriki, Roberta Barbieri, Ioanna Tsionki, Georgia Papantoniou, Dimitrios K. Moutopoulos, Maria Th. Stoumboudi:Preliminary results of a fish fauna survey in Lake Trichonis, Greece The preliminary results of a fish sampling campaign conducted in Lake Trichonis are presented. Fish were sampled using benthic and pelagic Nordic type gillnets set a...
Article
The pearl oyster Pinctada imbricata radiata (Leach, 1814) is considered as an invasive species and despite its presence, for more than half of a century in the Mediterranean its fisheries in Greek waters is illegal, unregulated and unreported (IUU) due to lack of legal framework and fisheries exploitation. The present study is based on a three-leve...
Article
Marine ecosystems are undergoing major transformations due to the establishment and spread of Non-Indigenous Species (NIS). Some of these organisms have adverse effects, for example by reducing biodiversity and causing ecosystem shifts. Others have upsides, such as benefits to fisheries or replacing lost ecological functions and strengthening bioge...
Article
Full-text available
One of the biggest threats facing vulnerable marine megafauna is their interaction withfisheries. Numerous studies have typically been confined to single taxa, however, therisk applies mutually to the majority of vulnerable marine megafauna. Using a bottom-upapproach to utilize fishers and fisheries stakeholders’ knowledge and perceptions ofinciden...
Technical Report
Full-text available
Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4-10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, fisheries governance, ecosystem effects of fisheries, a...
Article
Full-text available
Large-sized pelagic sharks and teleost fish are vulnerable to overexploitation by professional fisheries but little is known about the species caught by recreational fishing. This study presents for the first time in the Mediterranean an evaluation of the catch of pelagic sharks and teleost fish being caught by recreational fishermen by analyzing p...
Article
Full-text available
The relations between fish total (TL) fork (FL) and standard (SL) lengths, between TL and maximum height (H max) and horizontal (HMO) and vertical (VMO) mouth openings and mouth area (MA) of four freshwater fish species (Alburnoides thessalicus, Barbus strumicae, B. balcanicus and Squalius vardarensis) are estimated for several rivers of northern G...
Article
Full-text available
2020. Portraying fisheries and ecological status of a Mediterranean lake. Acta Ichthyol. Piscat. 50 (1): 71-83. Background. Gaps of knowledge in lentic systems and discrepancies in official fishery statistics biased fisheries state and inhibits the development of conservation strategies. For that reason the integration of conventional (official dat...
Article
Full-text available
The risk ranking of the severity and the consequences of site closures due to Harmful Algal Bloom (HAB) incidents was estimated through the development of a numerical risk matrix for the Mediterranean mussel Mytilus galloprovincialis L. commercial exploitation, in Greece. Results showed that site closures due to HABs that lasted more than 4 to 6 we...
Chapter
Full-text available
The original marine fisheries catch reconstructions for all countries and territories (or islands) surrounding the Mediterranean Sea for the years 1950 to 2010 were here updated for most entities to 2015, 2016 or 2017, then carried forward to 2018 using statistics from the Food and Agriculture Organization of the United Nations (FAO). The exception...
Article
Full-text available
The present study deals with the monitoring for a real implementation of management policies in marine en-vironments and the potential conflicts between professional and recreationalfishery in the coastal areas of theMediterranean Sea. A comprehensive database offishing effort andfisheries infringements from professionalsmall-scale and recreational...
Conference Paper
Full-text available
Τhe pearl oyster Pinctada imbricata radiata is treated as an invasive "NIS" species despite its long presence in the Mediterranean. The limited but existing commercial exploitation for human consumption due to lack of legal framework in Greece the pearl oyster fisheries is illegal, unregulated and unreported (IUU). To solve this problem a holistic...
Article
Elasmobranchs, extremely charismatic and threatened animals, still are an important economic source for fshers in many parts of the world, providing signifcant income through trade. Even though Greek seas host at least 67 elasmobranch species, our knowledge about their biology and ecology is to a large extent unknown. In the present study the integ...
Article
1. All three species of angel sharks (genus Squatina) inhabiting the Mediterranean Sea are listed as Critically Endangered in the International Union for Conservation of Nature Red List of Threatened Species due to overexploitation. 2. New records from Cyprus, Greece, Italy and Libya were collected from citizenscientists and integrated with local k...
Article
Since prehistoric times, cetaceans have been important food sources, but they also have been seen as monsters of the sea, a perception that did not change much during the past centuries. Due to a better understanding of their biology in recent years, the public perception towards cetaceans has been evolving. Various studies have been developed aimi...
Article
In Greece, research about Environmental Education in elementary schools is scarce and geographically limited. A total of 1,157 questionnaires focused on the marine environment and, especially, on cetaceans (dolphins and whales), were conducted among 5th and 6th grade primary school students from 25 Greek towns. Results revealed that the awareness o...
Article
The interaction between fishing gears and the marine environment define 'fisheries,' and the effect of gears on marine ecosystems and fish stocks has been the source of much debate. Here, we present the first summary of globally reconstructed fisheries catches by major gear categories for 1950-2014. We used the Sea Around Us reconstructed global ca...
Article
Full-text available
Τhe ecosystem structure of a Mediterranean lentic system (Lake Volvi, Northern Greece) was assessed and quantified for the first time, using the Ecopath with Ecosim model. Biological and fisheries-related data were collected during 2014–2015 from field surveys; moreover, operational and other data concerning fisheries exploitation were assessed by...
Article
Discards are of primary target for the European Union policy and concerns have been expressed on the consequances that the landing obligation may have on the fisheries resources and other ecosystem components. In this context, we used an ecosystem modelling approach based on a previously constructed food web model for the Greek Ionian Sea to explor...
Article
Full-text available
We estimated the relationships between total length (TL) and opercular (Gope) and maximum (Gmax) girths, for the seven most important freshwater fish species in Lake Volvi during 2016-2017. Both Gope and Gmax increased significant linearly with TL for all studied species with all r 2 values being greater than 0.83. When Gope and Gmax were plotted a...
Article
The impact of recreational fishing on fish stocks remains largely unknown, as this is inherently difficult to monitor, especially in areas such as the Mediterranean Sea where many species are targeted using a variety of fishing gears and techniques. This study attempts to complement existing data sets and construct the profile of recreational fishe...
Article
Full-text available
Guitarfishes characterized by special life history traits and comprised a very fragile resource, whereas the insufficient scientific information makes them a group for major conservation concern of the world oceans. The present study aims to present new records on guitarfishes based on unconventional data collection comprised by citizen scientists’...
Article
Full-text available
We estimated the relationships between total vertical, horizontal and mouth area with total length for seven fish species caught from Lake Volvi (Northern Greece) during September 2016-February 2017. All relationships were significantly allometric (P<0.05) and were described by the power regression with r 2 values ranging from 0.435 to 0.882. The e...
Article
Full-text available
The aim of the present study is to provide morphometric relationships for the Mediterranean wide-eyed flounder Bothus podas (Delaroche, 1809), to identify possible sexual dimorphism, and to determine the feeding habits and the functional role of the species in the ecosystem. Sampling was carried out during a trawl survey off the coast of northern C...
Article
Full-text available
Moutopoulos D.K., Dimitriou N., Nystas T., Koutsikopoulos C. 2017. Length-girth relations of fishes from a Mediterranean lagoon system. Acta Ichthyol. Piscat. 47 (4): 397-400. Abstract. We estimated the relations between total length (TL) and opercular (G ope) and maximum (G max) girths, for the eight most representative lagoon fish species in Meso...
Article
Minimizing illegal fishing is of paramount importance for fisheries sustainability. The present study focused on the fisheries infringements through the analysis of the official records in one of the largest Mediterranean lagoons, Mesolonghi-Etolikon, and the analysis of questionnaires answered by local fishermen to determine the true effectiveness...
Article
Minimizing illegal fishing is of paramount importance for fisheries sustainability. The present study focused on the fisheries infringements through the analysis of the official records in one of the largest Mediterranean lagoons, Mesolonghi-Etolikon, and the analysis of questionnaires answered by local fishermen to determine the true effectiveness...
Article
Full-text available
The " avgotaracho Messologgiou " PDO is a traditional product with protected designation of origin of which quality control based on the experience of the producers. This is salted, semi-dried whole ovaries of Mugil cephalus that caught during species spawning seaward migration in the barrier traps of the well-defined lagoon system of Mesolonghi-Et...
Article
Coastal, small-scale fisheries (SSF), whether artisanal (professional) or recreational, represent important socioeconomic activities across Europe that are currently undergoing a number of changes. This paper reviews and analyses the drivers of these changes, and makes recommendations for the future management of SSF. From the biological standpoint...
Article
Full-text available
Fisheries have had major negative impacts on marine ecosystems, and effective fisheries management and governance are needed to achieve sustainable fisheries, biodiversity conservation goals and thus good ecosystem status. To date, the IndiS-eas programme (Indicators for the Seas) has focussed on assessing the ecological impacts of fishing at the e...
Article
Illegal fishing has been recognized as a global problem in achieving fisheries sustainability. In the present study, the fisheries violations and fines/penalties imposed per fishery recorded by Ministry of Mercantile Marine were analysed for the Greek waters during 1999–2013. Spatio-temporal patterns identified were related to: (a) easy access oper...
Conference Paper
Full-text available
Iconic animals, such cetaceans, are considered key factors for directing public attention towards conservation efforts for nature. The understanding of the public perception towards these iconic animals can improve awareness campaigns and boost conservation endeavours. In the past, primarily in USA, several studies addressed the attitudes towards c...