The fast development of sea cucumber fisheries in the Mediterranean and NE Atlantic waters: From a new marine resource to its over-exploitation

González‐Wangüemert, Mercedes; Domínguez-Godino, Jorge A.; Cánovas, Fernando

doi:10.1016/j.ocecoaman.2017.10.002

Cited by 77 publications

(72 citation statements)

References 44 publications

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“…Similar trend on Parastichopus regalis ’ populations was described in fishing areas (González‐Wangüemert et al., ; Maggi & González‐Wangüemert, ). Additionally, in 2016, H. forskali fishery started to be regulated in Galicia (NW Spain), although this species has been experimentally caught since 2013, increasing gradually its catches in the last years (González‐Wangüemert et al., ).…”

Section: Introductionsupporting

confidence: 82%

“…The first insights of overexploitation were already found for H. polii, H. tubulosa and H. mammata , with the largest and heaviest individuals decreasing on frequency and/or disappearing from fishing areas, and showing low genetic diversity (González‐Wangüemert, Valente, & Aydin, ; González‐Wangüemert et al., , ). Similar trend on Parastichopus regalis ’ populations was described in fishing areas (González‐Wangüemert et al., ; Maggi & González‐Wangüemert, ). Additionally, in 2016, H. forskali fishery started to be regulated in Galicia (NW Spain), although this species has been experimentally caught since 2013, increasing gradually its catches in the last years (González‐Wangüemert et al., ).…”

Section: Introductionmentioning

confidence: 93%

“…Turkey fishery has increased since 1996 (19,868 kg caught); its maximum production was reached in 2011 with 479,980 kg (Aydın, , ). From that year, the total production started to decrease until reaching 150.250 kg in the first semester of 2016 (Aydın, ) due to previous over‐exploitation of this resource (González‐Wangüemert, Aydin, & Conand, ; González‐Wangüemert, Domínguez‐Godino, & Cánovas, ). The target species have changed along these last years (González‐Wangüemert et al., ), from Holothuria polii ( 80% of the total catches) and Holothuria tubulosa and Holothuria mammata (20% of the total catches) (González‐Wangüemert et al., , ), to lower commercial value species such as Holothuria forskali and Holothuria sanctori (M. Aydin, pers.…”

Section: Introductionmentioning

confidence: 99%

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Breeding and larval development ofHolothuria mammata, a new target species for aquaculture

Domínguez-Godino

González‐Wangüemert

2018

Aquac Res

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Sea cucumber commercial fisheries in the North‐eastern Atlantic and Mediterranean Sea started in Turkey in the 1990s. Due to ineffective management practices, the sea cucumber resource was overexploited. Holothuria mammata is one of the sea cucumber species exploited from this geographical area, showing high potential for its aquaculture. This research was undertaken to develop the breeding, larval and juveniles rearing techniques for development of H. mammata aquaculture. Broodstocks collected from Ria Formosa (Faro, S Portugal) were successfully induced to spawn by thermal stimulation from July to October, yielding up to 6.95 million eggs/female. The eggs and larvae were reared and their development described. H. mammata showed the five typical larval stages of most aspidochirote holoturians. Juveniles stage was reached after 21 days post‐fertilization. This is the first work focused on the aquaculture biotechnology of H. mammata, however, further research is need to improve the survival of juveniles to ensure the future production of this species.

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Section: Introductionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Breeding and larval development ofHolothuria mammata, a new target species for aquaculture

Domínguez-Godino

González‐Wangüemert

2018

Aquac Res

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“…Sea cucumber commercial fisheries in the Mediterranean Sea started in 1996 in Turkey, mainly focused on Parastichopus regalis as ‘by catch’ and later Holothuria polii, H. tubulosa and H. mammata; however, the target species have been changing along the last years (González‐Wangüemert, Aydin, & Conand, ; González‐Wangüemert, Domínguez‐Godino, & Cánovas, ; M. Aydin, personal Communication). Due to the heavy fishing pressure, the first insight of their overexploitation has been found, with reduction in the largest and heaviest individuals, loss of genetic diversity and reduction in catches (González‐Wangüemert et al, ; González‐Wangüemert, Valente, & Aydin, , ). Similar overexploitation insight has been found on P. regalis fisheries in Catalonia (NE Spain; Maggi & González‐Wangüemert, ).…”

Section: Introductionmentioning

confidence: 99%

Seagrass debris as potential food source to enhanceHolothuria arguinensis' growth in aquaculture

et al. 2020

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Holothuria arguinensis aquaculture started to be developed in 2014, being the first sea cucumber species from Europe. However, some aspects of its aquaculture biotechnology, such diets, need to be assessed. This work aimed to evaluate seagrass debris of Zostera noltii and Cymodocea nodosa as food source for broodstock maintenance in tanks, during breeding periods. The given feed rations per tank were calculated as the 30% of the total sea cucumber biomass in each tank and reviewed each week. Then, feed rations of seagrass and sediment were calculated from this value, according to the following percentages: 40% sediment, 15% Z. noltii, 40% Z. noltii, 15% C. nodosa and 40% C. nodosa. H. arguinensis growth, feeding rate and nutritional value were assessed under these diets. H. arguinensis fed with 40% of Z. noltii showed the highest growth (specific growth rate = 0.09 ± 0.06%/day, absolute growth rate = 0.11 ± 0.07 g/day) increasing their final weight in 5.86 ± 3.57% in 57 days. However, the individuals fed with C. nodosa showed a negative growth. H. arguinensis showed a reduction in its feeding rate as the organic matter content in the diets increased. H. arguinensis did not show any important change on proximate composition, protein, lipid, mineral contents and fatty acids profile among the feeding groups, or in comparison with the individuals collected from wild habitat. Therefore, H. arguinensis could be fed with Z. noltii debris during tanks maintenance along breeding period, ensuring its growth and maintaining its nutritional profile.

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“…Holothuria arguinensis (Koehler & Vaney, ) is a sea cucumber species which has reached high economic value in the last years, being heavily and illegally harvested in the Algarve and Andalusian coasts (González‐Wangüemert, Domínguez‐Godino & Cánovas, ). In addition, since 2014, its aquaculture is being developed, achieving important improvements and being the only sea cucumber species successfully produced under aquaculture conditions in the North‐Eastern Atlantic and Mediterranean Sea (Domínguez‐Godino, Slater, Hannon & González‐Wangüemert, ; Domínguez‐Godino & González‐Wangüemert, , , In review ).…”

Section: Introductionmentioning

confidence: 99%

Improving the fitness of Holothuria arguinensis larvae through different microalgae diets

Domínguez-Godino

González‐Wangüemert

2019

Aquac Res

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Development and design of adequate feeding protocols on sea cucumber larvae are necessary for improvements on larvae growth, survival and production of competent juveniles. This work assessed the Holothuria arguinensis larvae growth and survival, fed with three different single microalgae diets of Chaetoceros calcitrans, Isochrysis galbana and Tetraselmis chui, and two microalgae diets based on a combination of C. calcitrans and T. chuii (C:T; 1:1) and C. calcitrans, T. chuii and I. galbana (C:T:I; 1:1:1) during 2 months. Holothuria arguinensis larvae fed with T:C:I, showed higher survival and larger larval and stomach sizes than the ones fed with the other diets. Comparing the results obtained from the single diets, H. arguinensis larvae fed with I. galbana grew and survived better during the first 5 days. However, higher growth was obtained on the larvae fed with C. calcitrans from day 5 to day 12; since this day, larvae fed with T. chuii showed the largest size. These results could be related to the different microalgae size and morphology, in addition to the nutritional value of the different microalgae used. However, no competent larvae that metamorphosed into doliolaria were obtained during this experiment. The tanks used were transparent, which could be causing light stress to the larvae, since competent larvae were obtained in opaque production tanks in our aquaculture installations during the same time period. The combined diet of C. calcitrans, T. chuii and I. galbana (C:T:I) could improve the growth and larvae competency of H. arguinensis.

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The fast development of sea cucumber fisheries in the Mediterranean and NE Atlantic waters: From a new marine resource to its over-exploitation

Cited by 77 publications

References 44 publications

Breeding and larval development ofHolothuria mammata, a new target species for aquaculture

Breeding and larval development ofHolothuria mammata, a new target species for aquaculture

Seagrass debris as potential food source to enhanceHolothuria arguinensis' growth in aquaculture

Improving the fitness of Holothuria arguinensis larvae through different microalgae diets

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