A review of length-weight relationships of fishes from Greek marine waters

This paper presents 649 length-weight relationships gathered from literature pertaining to 83 fish species, belonging to 34 families, throughout Greek marine waters. The value of the slope b ranged from 1.667 for Cepola macrophthalma to 3.707 for Mullus barbatus. The mean value of b was 2.989 (SD=0.339) and did not differ significantly from 3(t-test, p<0.05). The median value of b was 3.058 and 50% of the b values ranged between 2.900 and 3.186

Understanding Consumer’s Attitude on Fish Quality and Marketing Aspects in the Greek Market

During the last decade the Greek fish market experienced significant changes affecting both the supply and the demand of fish. Fisheries have faced significant problems, such as overfishing and low productivity. Similarly, the undoubtedly rapid development of the aquaculture sector was followed by an intense competition and low prices for fish. On the other hand, the traditional Greek consumer’s attitude on fish products is rapidly changing mainly due to socio-economic factors. Within this framework, the consumers play a critical role that of being the link between supply and demand. Thus, the analysis of the consumer’s attitude concerning basic quality and marketing aspects on marine captured and farmed fish market could be a useful tool towards a more rational organization of the distribution roots. For this purpose, research was carried out and a total of 395 consumers, randomly selected in terms of demographic and socio-economic dispersion criteria, were asked to fill in a questionnaire covering aspects of fish marketing and quality aspects, such as consumers’ “sensitivity on fish freshness issuesâ€, “sensitivity on marketing issues†and “reasons for choosing fish as food†in their family. regarding Data were statistically analyzed using categorical regression in an effort to identify the effect of basic classification variables of consumers’ origin and socioeconomic status into their sensitivity on fish quality and marketing aspectFish market, consumer survey, fish marketing issues, categorical regression, Consumer/Household Economics, Marketing,

Consumer Attitude Towards Shellfish In The Greek Market: A Pilot Study

During the last decade, the Greek shellfish industry has experienced significant changes affecting both the market demand and the availability of the end products. Although, shellfish and seafood in general have been promoted as healthy food by marketing boards and private seafood companies in many countries all over the world, no attention has been paid so far to analysing the Greek consumer’s purchasing behaviour and attitudes towards the shellfish market. This paper presents the results of the first survey in this field of research, which was carried out in northern Greece (area of Katerini and Greater Thessaloniki) from January to March 2002. A randomly selected sample of 400 consumers filled in a questionnaire, which covered basic marketing aspects of shellfish consumption such as choice, purchase, reasons for consuming shellfish, confidence in shellfish hygiene certification, media influence, etc. Data analysis includes descriptive statistics, as well as chi-square (― 2 ) tests (crosstabulation) to examine possible relations between consumers’ demographic and socio-economic characteristics and shellfish marketing aspects. Analyses of the results have shown that the majority of Greek consumers prefer the exploitable to cultured shellfish and in general do not eat shellfish often. They prefer the traditional fish shops for purchasing shellfish and consume them mainly in summer. The strongest reason to buy shellfish is their taste, while freshness is considered as the most important criterion when deciding to buy shellfish. Moreover, the vast majority of the consumers prefer a certification of quality, trust the confirmation provided by the veterinary authorities, but do not prefer ready-to-eat shellfish. Results revealed that consumers’ behaviour and attitudes vary considerably according to their demographic and socio-economic characteristics. The results of this study could prove to be helpful for decision makers towards a more rational planning of production and improvement of distributing roots, which in turn would improve product quality and promote shellfish consumption

Competition between static gear of the small-scale fisheries in Algarve waters (southern Portugal)

Parallel fishing trials with 0.30 mm diameter monofilament gill nets and longlines using small hooks were carried out in the Algarve (southern Portugal) over a one-year period, 1997-1998, with the objective of comparing species composition, catch rates, discards and size ranges. Four hook sizes of 'Mustad' brand, round bent, flatted sea hooks (numbers 15, 13, 12 and 11) and four mesh sizes of 25, 30, 35 and 40 mm (nominal bar length) of gill nets were used in the trials. Overall, 84 species were caught, with gill nets taking 71 species and longlines 54 species and with 41 species caught by both gears. The amount of discarding was higher for gill nets than for longlines. The catch species composition differed between the two gears, with the commercially valuable sea breams dominating the longline catches whereas small pelagics were relatively more important in the gill nets. Multivariate analysis showed a clear separation between the different sizes of the two gears both in terms of numbers and weights per species. Algarve gill netters and longliners fish the same species assemblage on the same fishing grounds, but have clearly different impacts in terms of catch species composition, catch rates and sizes. This information will be useful for the improved management of these small-scale, multi-species, multi-gear fisheries, where different gears compete for scarce resources. In particular this study provides a basis for a more rational allocation of licenses and control of fishing effort

Semi-quantitative risk assessment of Mediterranean mussel (Mytilus galloprovincialis L.) harvesting bans due to harmful algal bloom (HAB) incidents in Greece

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 weeks during the harvest season (spring to late summer) could be catastrophic. © 2020, © 2020 Taylor &amp; Francis Group, LLC

Understanding Consumer’s Attitude on Fish Quality and Marketing Aspects in the Greek Market

During the last decade the Greek fish market experienced significant changes affecting both the supply and the demand of fish. Fisheries have faced significant problems, such as overfishing and low productivity. Similarly, the undoubtedly rapid development of the aquaculture sector was followed by an intense competition and low prices for fish. On the other hand, the traditional Greek consumer’s attitude on fish products is rapidly changing mainly due to socio-economic factors. Within this framework, the consumers play a critical role that of being the link between supply and demand. Thus, the analysis of the consumer’s attitude concerning basic quality and marketing aspects on marine captured and farmed fish market could be a useful tool towards a more rational organization of the distribution roots. For this purpose, research was carried out and a total of 395 consumers, randomly selected in terms of demographic and socio-economic dispersion criteria, were asked to fill in a questionnaire covering aspects of fish marketing and quality aspects, such as consumers’ “sensitivity on fish freshness issues”, “sensitivity on marketing issues” and “reasons for choosing fish as food” in their family. regarding Data were statistically analyzed using categorical regression in an effort to identify the effect of basic classification variables of consumers’ origin and socioeconomic status into their sensitivity on fish quality and marketing aspec

Length–weight relations of 34 fish species caught by small-scale fishery in Korinthiakos Gulf (Central Greece)

Length–weight (L–W) relations are presented for 34 fish species covering a full annual fishing period (231 fishing days) of professional small-scale fishery in Korinthiakos Gulf during 2008–2009. These were the typical fish species caught by Greek small-scale fishery. Mean annual values of b ranged from 2.751 to 3.704. The L–W relations were positively allometric for 12 species, negatively allometric for seven species and isometric for 15 species. Twenty-two out of 66 species-season combinations showed that the intercept a and/or slope b values differed significantly among seasons. For Greek waters no information regarding the L–W relations existed for three of the 34 recorded species (i.e., Dentex macrophthalmus, Trachinotus ovatus, and Scyliorhinus canicula)

Length–weight relations of 34 fish species caught by small-scale fishery in Korinthiakos Gulf (Central Greece)

Length–weight (L–W) relations are presented for 34 fish species covering a full annual fishing period (231 fishing days) of professional small-scale fishery in Korinthiakos Gulf during 2008–2009. These were the typical fish species caught by Greek small-scale fishery. Mean annual values of b ranged from 2.751 to 3.704. The L–W relations were positively allometric for 12 species, negatively allometric for seven species and isometric for 15 species. Twenty-two out of 66 species-season combinations showed that the intercept a and/or slope b values differed significantly among seasons. For Greek waters no information regarding the L–W relations existed for three of the 34 recorded species (i.e., Dentex macrophthalmus, Trachinotus ovatus, and Scyliorhinus canicula)

Length–girth relations of fishes from a Mediterranean lagoon system

We estimated the relations between total length (TL) and opercular (Gope) and maximum (Gmax) girths, for the eight most representative lagoon fish species in Mesolonghi–Etolikon lagoons within 2015–2017 (June through December). The following species were studied: Chelon saliens (Risso, 1810); Chelon auratus (Risso, 1810); Chelon ramada (Risso, 1827); Mugil cephalus Linnaeus, 1758; Diplodus puntazzo (Walbaum, 1792); Diplodus sargus (Linnaeus, 1758); Sparus aurata Linnaeus, 1758; Dicentrarchus labrax (Linnaeus, 1758). For five of these species (C. saliens, C. auratus, C. ramada, S. aurata, and D. labrax) LGR estimates were not available. Results showed that both Gope and Gmax increased significantly linearly with TL for all studied species with all r2 values being higher than 0.862. When Gmax values were plotted against TL for all species combined, two significant (ANCOVA, P < 0.05) length–girth relations were identified corresponding to different body shapes. The implications of girth measurements for lagoon gear selectivity estimates are also discussed