Spatio-temporal patterns and environmental controls of small pelagic fish body condition from contrasted Mediterranean areas
|Author(s)||Brosset Pablo1, 2, Fromentin Jean-Marc2, Van Beveren Elisabeth2, Lloret Josep3, Marques Virginie2, Basilone Gualtiero4, Bonanno Angelo4, Carpi Piera5, 6, Donato Fortunata5, Kec Vanja Cikes7, de Felice Andrea5, Ferreri Rosalia4, Gasparevic Denis7, Giraldez Ana9, Gucu Ali8, Iglesias Magdalena10, Leonori Iole5, Palomera Isabel11, Somarakis Stylianos12, Ticina Vjekoslav7, Torres Pedro9, Ventero Ana10, Zorica Barbara7, Menard Frederic13, Saraux Claire2|
|Affiliation(s)||1 : Univ Montpellier, UMR MARBEC IRD, IFREMER, CNRS, F-34203 Sete, France.
2 : UM, CNRS, IFREMER, UMR MARBEC IRD, F-34203 Sete, France.
3 : Univ Girona, Fac Sci, Girona 17003, Spain.
4 : CNR, Ist Ambiente Marino Costiero, UOS Capo Granitola, Via Mare 3, I-91021 Campobello Di Mazara, TP, Italy.
5 : CNR, Ist Sci Marine, I-60125 Ancona, Italy.
6 : Ctr Environm Fisheries & Aquaculture Sci, Pakefield Rd, Lowestoft, Suffolk, England.
7 : Inst Oceanog & Fisheries, Set I Mestrov 63, Split 21000, Croatia.
8 : Middle East Tech Univ, Inst Marine Sci Erdemli, Icel, Turkey.
9 : Ctr Oceanog Malaga IEO, Puerto Pesquero 29640, Fuengirola, Spain.
10 : Ctr Oceanog Baleares, Inst Espanol Oceanog, Muelle Poniente S-N, Palma De Mallorca 07015, Baleares, Spain.
11 : CSIC, ICM, Barcelona, Spain.
12 : Hellen Ctr Marine Res, Inst Marine Biol Resources & Inland Waters, POB 2214, GR-71003 Iraklion, Crete, Greece.
13 : Univ Toulon & Var, Aix Marseille Univ, CNRS, IRD,MIO,UM 10, F-13288 Marseille, France.
|Source||Progress In Oceanography (0079-6611) (Pergamon-elsevier Science Ltd), 2017-02 , Vol. 151 , P. 149-162|
|WOS© Times Cited||43|
|Keyword(s)||Anchovy, Sardine, Fish health, Marine monitoring|
|Abstract||Small pelagic fish are among the most ecologically and economically important marine fish species and are characterized by large fluctuations all over the world. In the Mediterranean Sea, low catches and biomass of anchovies and sardines have been described in some areas during the last decade, resulting in important fisheries crises. Therefore, we studied anchovy and sardine body condition variability, a key index of population health and its response to environmental and anthropogenic changes. Wide temporal and spatial patterns were investigated by analyzing separately data from scientific surveys and fisheries in eight Mediterranean areas between 1975 and 2015.Results showed that anchovy and sardine body condition as well as maximum size in some areas sharply decreased in most Mediterranean areas along years (except in the Northern Alboran Sea). Despite this general pattern, well-marked environmental differences between sub-regions were highlighted by several analyses and variations in body condition were not found to be homogeneous over all the Mediterranean Sea. Further, other analyses revealed that except for the Adriatic where major changes towards a lower body condition were concomitant with a decrease in river runoffs and chl-a concentration, no concomitant environmental regime shift was detected in other areas.Together, these analyses highlighted the current poor body condition of almost all small pelagic fish populations in the Mediterranean. Yet, global environmental indices could not explain the observed changes and the general decrease in condition might more likely come from regional environmental and/or anthropogenic (fishing) effects. A prolonged state of poor fish body condition, together with an observed reduced size and early age-at-maturity may have strong ecological, economic and social consequences all around the Mediterranean Sea.|