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| Registros recuperados: 16 | |
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| Jadaud, Angelique; Guijarro, Beatriz; Massuti, Enric. |
| In the Gulf of Lions (GSA 7), red mullet is exploited by both French and Spanish trawlers. Information on French gillnetters is only available for 2011 and 2013-2016, but although it is suspected that they have been fishing red mullet in the past, no data is available to quantify their catches. According to official statistics, during the first part of this period (2004-2012), the total annual landings have oscillated around an average value of 190 tons; since 2012, landings have shown a clear increasing trend. French trawlers dominate the fishery, as they represent 88% of the catches (average 201 tons) for the entire period. After 2009, because of the large decline of small pelagic fish species in the area, the trawlers fishing small pelagic have diverted... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00423/53464/54359.pdf |
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| Jadaud, Angelique; Guijarro, Beatriz; Massuti, Enric. |
| In the Gulf of Lions (GSA 7), red mullet is exploited by both French and Spanish trawlers. Information on French gillnetters is only available for 2011, 2013 and 2014, but although it is suspected that they have been fishing red mullet in the past, no data is available to quantify their catches. According to official statistics, during this period the total annual landings have oscillated around an average value of 216 tons and the French trawlers have been dominating the fishery, as they represent 82% of the catches (177 tons) on the period. After 2009, because of the large decline of small pelagic fish species in the area, the trawlers fishing small pelagic have diverted their effort on demersal species, this can explain the high levels of catches since... |
| Tipo: Text |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00303/41410/40583.pdf |
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| Carbonara, Pierluigi; Zupa, Walter; Anastasopoulou, Aikaterini; Bellodi, Andrea; Bitetto, Isabella; Charilaou, Charis; Chatzispyrou, Archontia; Elleboode, Romain; Esteban, Antonio; Follesa, Maria Cristina; Isajlovic, Igor; Jadaud, Angelique; Garcia-ruiz, Cristina; Giannakaki, Amalia; Guijarro, Beatriz; Kiparissis, Sotiris Elias; Ligas, Alessandro; Mahe, Kelig; Massaro, Andrea; Medvesek, Damir; Mytilineou, Chryssi; Ordines, Francesc; Pesci, Paola; Porcu, Cristina; Peristeraki, Panagiota; Thasitis, Ioannis; Torres, Pedro; Spedicato, Maria Teresa; Tursi, Angelo; Sion, Letizia. |
| The uncertainty in age estimation by otolith reading may be at the root of the large variability in red mullet (Mullus barbatus) growth models in the Mediterranean. In the MEDITS survey, red mullet age data are produced following the same sampling protocol and otolith reading methodology. However, ageing is assigned using different interpretation schemes, including variations in theoretical birthdate and number of false rings considered, in addition to differences in the experience level of readers. The present work analysed the influence of these variations and the geographical location of sampling on red mullet ageing using a multivariate approach (principal component analysis). Reader experience was the most important parameter correlated with the... |
| Tipo: Text |
Palavras-chave: Mullus barbatus; Age variability; MEDITS; Mediterranean; Reader effect; False rings; Date of birth. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00591/70320/68356.pdf |
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| Jadaud, Angelique; Guijarro, Beatriz; Massuti, Enric. |
| In the Gulf of Lions (GSA 7), red mullet is exploited by both French and Spanish trawlers. Information on French gillnetters is only available for 2011, 2013, 2014 and 2015, but although it is suspected that they have been fishing red mullet in the past, no data is available to quantify their catches. According to official statistics, during this period the total annual landings have oscillated around an average value of 228 tons (351 tons in 2015) and the French trawlers have been dominating the fishery, as they represent 83% of the catches (189 tons) on the period. After 2009, because of the large decline of small pelagic fish species in the area, the French trawlers fishing small pelagic have diverted their effort on demersal species, this can explain... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00363/47447/47479.pdf |
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| Sioni, Letizia; Zupa, Walter; Calculli, Crescenza; Garofalo, Germana; Hidalgo, Manuel; Jadaud, Angelique; Lefkaditou, Evgenia; Ligas, Alessandro; Peristeraki, Panagiota; Bitetto, Isabella; Capezutto, Francesca; Carlucci, Roberto; Esteban, Antonio; Follesa, Cristina; Guijarro, Beatriz; Ikica, Zdravko; Isajlovic, Igor; Lembo, Giuseppe; Manfredi, Chiara; Perez, José Luiz; Porcu, Cristina; Thasitis, Ioannis; Tserpes, George; Carbonara, Pierluigi. |
| The present study provides updated information on the occurrence, abundance and biomass distribution patterns and length frequencies of Merluccius merluccius in the Mediterranean Sea, by analysing a time series of data from the Mediterranean International Trawl Surveys (MEDITS) from 1994 to 2015. The highest values of abundance and biomass were observed in the Sardinian Seas. The use of a generalized additive model, in which standardized biomass indices (kg km–2) were analysed as a function of environmental variables, explained how ecological factors could affect the spatio-temporal distribution of European hake biomass in the basin. High biomass levels predicted by the model were observed especially at 200 m depth and between 14°C and 18°C, highlighting... |
| Tipo: Text |
Palavras-chave: Merluccius merluccius; Distribution pattern; Environmental factors; MEDITS; Mediterranean Sea. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00591/70351/68419.pdf |
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| Hidalgo, Manuel; Ligas, Alessandro; Maria Bellido, Jose; Bitetto, Isabella; Carbonara, Pierluiggi; Carlucci, Roberto; Guijarro, Beatriz; Jadaud, Angelique; Lembo, Giuseppe; Manfredi, Chiara; Esteban, Antonio; Garofalo, Germana; Ikica, Zdravko; Garcia, Cristina; Gil De Sola, Luis; Kavadas, Stefanos; Maina, Irida; Sion, Letizia; Vittori, Stefania; Vrgoc, Nedo. |
| Most studies on European hake focus on the recruitment process and nursery areas, whereas the information is comparatively limited on the ecology of the juvenile stage (ca. second year of life)-the one most exploited by the Mediterranean trawl fisheries. Using information of the MEDITS programme, we provide a spatial and temporal assessment of the influence of body size and growth on hake survival from recruits (age 0) to juveniles (age 1), along with the impact of surface temperature and chlorophyll variability. At a biogeographic scale, size-dependent survival is supported, with areas with higher mean length of recruits and juveniles yielding higher survival. A similar pattern was observed at interannual level in some western Mediterranean areas, also... |
| Tipo: Text |
Palavras-chave: Juvenile survival; European hake; Mediterranean Sea; Size dependence. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00600/71229/69590.pdf |
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| Fernandez-arcaya, Ulla; Bitetto, Isabella; Esteban, Antonio; Farriols, M. Teresa; García-ruiz, Cristina; Gil De Sola, Luis; Guijarro, Beatriz; Jadaud, Angelique; Kavadas, Stefanos; Lembo, Giuseppe; Milisenda, Giacomo; Maina, Irida; Petovic, Slavica; Sion, Letizia; Vaz, Sandrine; Massutí, Enric. |
| The large-scale distribution pattern of megafauna communities along the Mediterranean middle slope was explored. The study was conducted between 500 and 800 m depth where deep-water fishery occurs. Although community studies carried out deeper than 500 m are partly available for some geographic areas, few large-scale comparative studies have been carried out. Within the framework of the MEDITS survey programme, we compared the megafauna community structure in ten geographical sub-areas (GSAs) along the Mediterranean coasts. Additionally, the spatial distribution of fishing was analysed using vessel monitoring by satellite information. Overall, the community showed a significant difference between sub-areas, with a decreasing eastward pattern in abundance... |
| Tipo: Text |
Palavras-chave: Distribution pattern; Fishing impact; Continental slope; Deep sea; Megafauna; Red shrimp; Community. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00489/60051/63328.pdf |
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| Jadaud, Angelique; Guijarro, Beatriz; Massuti, Enric. |
| Hake is one of the most important demersal target species for the commercial fisheries in the Gulf of Lions (GSA 7). In this area, hake is exploited by French trawlers, French gillnetters, Spanish trawlers and Spanish longliners. Since 1998, an average of 241 boats are involved in this fishery and, according to official statistics, the total annual catches for the period 1998-2016 have oscillated around an average value of 1914 tons (1057 tons in 2016). In 2009, because of the large decline of small pelagic fish species in the area, the trawlers fishing small pelagic have diverted their effort on demersal species. Between 1998 and 2016, the number of French trawlers operating in the GSA 07 has decreased by 50%. The French trawler fleet is the largest... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00423/53462/54358.pdf |
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| Rouyer, Tristan; Jadaud, Angelique; Guijarro, Beatriz; Massuti, Enric. |
| Fishery: Hake is one of the most important demersal target species for the commercial fisheries in the Gulf of Lions (GSA 7). In this area, hake is exploited by French trawlers, French gillnetters, Spanish trawlers and Spanish longliners. Since 1998, an average of 243 boats are involved in this fishery and, according to official statistics, the total annual landings for the period 1998-2013 have oscillated around an average value of 2008 tons (1736 tons in 2013). In 2009, because of the large decline of small pelagic fish species in the area, the trawlers fishing small pelagic have diverted their effort on demersal species. Between 1998 and 2013, the number of French trawlers operating in the GSA 07 has decreased by 39%, while it decreased by more than 30%... |
| Tipo: Text |
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| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00242/35359/33863.pdf |
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| Ordines, Francesc; Lloret, Josep; Tugores, Pilar; Manfredi, Chiara; Guijarro, Beatriz; Jadaud, Angelique; Porcu, Cristina; Gil De Sola, Luis; Carlucci, Roberto; Sartini, Marina; Isajlovic, Igor; Massutti, Enric. |
| A new approach to recruitment overfishing diagnosis is presented. We hypothesize that condition of recruits should increase when recruitment failures are caused by fishing activity. This would be a consequence of the increase in trophic resource availability, because the population is smaller than that which the ecosystem could support. Temporal series of hake recruit condition were calculated from MEDITS survey data collected in Mediterranean geographical sub-areas (GSAs) 1, 6, 17 and 19 from 1994 to 2015. Multiple linear regressions were used to analyse the relationship between mean annual condition and abundance of recruits and climatic indices in each GSA. Significant correlations were only detected in GSA 6, where 69% of condition variability was... |
| Tipo: Text |
Palavras-chave: Merluccius merluccius; Fishery; Recruits; Condition index; Recruitment overfishing; MEDITS survey. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00513/62458/66762.pdf |
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| Sbrana, Mario; Zupa, Walter; Ligas, Alessandro; Capezzuto, Francesca; Chatzispyrou, Archontia; Follesa, Maria Cristina; Gancitano, Vita; Guijarro, Beatriz; Isajlovic, Igor; Jadaud, Angelique; Markovic, Olivera; Micallef, Reno; Peristeraki, Panagiota; Piccinetti, Corrado; Thasitis, Ioannis; Carbonara, Pierluigi. |
| The main characteristics concerning the distribution of two of the most important decapod crustaceans of commercial interest in the Mediterranean Sea, the deep-water rose shrimp, Parapenaeus longirostris, and the Norway lobster, Nephrops norvegicus, are studied in the European Mediterranean waters. The study is based on data collected under the MEDITS trawl surveys from 1994 to 2015 from the Gibraltar Straits to the northeastern Levantine Basin (Cyprus waters). The observed differences can be interpreted as different responses to environmental drivers related to the differing life history traits of the two species. In fact, N. norvegicus is a long-living, benthic burrowing species with low growth and mortality rates, while P. longirostris is an epibenthic,... |
| Tipo: Text |
Palavras-chave: Nephrops norvegicus; Parapenaeus longirostris; Distribution; Trawl survey; Mediterranean Sea. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00489/60052/63331.pdf |
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| Jadaud, Angelique; Guijarro, Beatriz; Massuti, Enric. |
| Hake is one of the most important demersal target species for the commercial fisheries in the Gulf of Lions (GSA 7). In this area, hake is exploited by French trawlers, French gillnetters, Spanish trawlers and Spanish longliners. Since 1998, an average of 243 boats are involved in this fishery and, according to official statistics, the total annual catches for the period 1998-2015 have oscillated around an average value of 1961 tons (1139 tons in 2015). In 2009, because of the large decline of small pelagic fish species in the area, the trawlers fishing small pelagic have diverted their effort on demersal species. Between 1998 and 2015, the number of French trawlers operating in the GSA 07 has decreased by 50%. The French trawler fleet is the largest... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00363/47446/47478.pdf |
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| Hidalgo, Manuel; Rossi, Vincent; Monroy, Pedro; Ser‐giacomi, Enrico; Hernández‐garcía, Emilio; Guijarro, Beatriz; Massutí, Enric; Alemany, Francisco; Jadaud, Angelique; Perez, Jose; Reglero, Patricia. |
| Marine resources stewardships are progressively becoming more receptive to an effective incorporation of both ecosystem and environmental complexities into the analytical frameworks of fisheries assessment. Understanding and predicting marine fish production for spatially and demographically complex populations in changing environmental conditions is however still a difficult task. Indeed, fisheries assessment is mostly based on deterministic models that lack realistic parameterizations of the intricate biological and physical processes shaping recruitment, a cornerstone in population dynamics. We use here a large metapopulation of a harvested fish, the European hake (Merluccius merluccius), managed across transnational boundaries in the northwestern... |
| Tipo: Text |
Palavras-chave: Ecosystem-based management; Fish recruitment; Fisheries conservation; Hydroclimate variability; Metapopulations; Ocean connectivity; Self-recruitment. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00504/61559/65478.pdf |
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| Jadaud, Angelique; Rouyer, Tristan; Guijarro, Beatriz; Massuti, Enric. |
| Fishery: In the Gulf of Lions (GSA 7), red mullet is exploited by both French and Spanish trawlers. Information on French gillnetters is only available for 2011 and 2013, but although it is suspected that they have been fishing red mullet in the past, no data is available to quantify their catches. Between 2004 and 2013, around 100 boats have been involved in the fishery. According to official statistics, during this period the total annual landings have oscillated around an average value of 200 tons and the French trawlers have been dominating the fishery, as they represent 73% of the catches (165 tons) on the period. After 2009, because of the large decline of small pelagic fish species in the area, the trawlers fishing small pelagic have diverted their... |
| Tipo: Text |
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| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00242/35366/33867.pdf |
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| Jadaud, Angelique; Guijarro, Beatriz; Massuti, Enric. |
| Hake is one of the most important demersal target species for the commercial fisheries in the Gulf of Lions (GSA 7). In this area, hake is exploited by French trawlers, French gillnetters, Spanish trawlers and Spanish longliners. Since 1998, an average of 243 boats are involved in this fishery and, according to official statistics, the total annual catches for the period 1998-2014 have oscillated around an average value of 2012 tons (1983 tons in 2014). In 2009, because of the large decline of small pelagic fish species in the area, the trawlers fishing small pelagic have diverted their effort on demersal species. Between 1998 and 2014, the number of French trawlers operating in the GSA 07 has decreased by 50%. The French trawler fleet is the largest... |
| Tipo: Text |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00303/41409/40582.pdf |
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| Keller, Stefanie; Quetglas, Antoni; Puerta, Patricia; Bitetto, Isabella; Casciaro, Loredana; Cuccu, Danila; Esteban, Antonio; Garcia, Cristina; Garofalo, Germana; Guijarro, Beatriz; Josephides, Marios; Jadaud, Angelique; Lefkaditou, Evgenia; Maiorano, Porzia; Manfredi, Chiara; Marceta, Bojan; Micallef, Reno; Peristeraki, Panagiota; Relini, Giulio; Sartor, Paolo; Spedicato, Maria Teresa; Tserpes, George; Hidalgo, Manuel. |
| The Mediterranean Sea is characterized by large scale gradients of temperature, productivity and salinity, in addition to pronounced mesoscale differences. Such a heterogeneous system is expected to shape the population dynamics of marine species. On the other hand, prevailing environmental and climatic conditions at whole basin scale may force spatially distant populations to fluctuate in synchrony. Cephalopods are excellent case studies to test these hypotheses owing to their high sensitivity to environmental conditions. Data of two cephalopod species with contrasting life histories (benthic octopus vs nectobenthic squid), obtained from scientific surveys carried out throughout the Mediterranean during the last 20 years were analyzed. The objectives of... |
| Tipo: Text |
Palavras-chave: Cephalopods; Mediterranean; MEDITS; Dynamic factor analysis; Synchrony; Octopus vulgaris; Illex coindetii. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00371/48207/48320.pdf |
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| Registros recuperados: 16 | |
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