Marine plastic pollution has become a prominent environmental issue in the recent years. Plastic ingestion is of special concern, as its magnitude and consequences for marine organisms potentially humans are still largely unknown. We reviewed 93 papers on by wild fish published since 1972. was detected 323 (65%) 494 examined species, 262 (67%) 391 commercial species. These proportions likely greater, detailed analysis sampling effort analytical methods used studies suggests an...

Black pearl farming is based on culture of the blacklip oyster Pinctada margaritifera (Mollusca, lophotrochozoa), a protandrous hermaphrodite species. At first maturation, all individuals are males. The female sex appears progressively from two years old, which represents limitation for broodstock conditioning aquaculture production. In marine mollusks displaying hermaphroditic features, data sexual determinism and differentiation, including molecular determining cascade, scarce. To increase...

Abstract Giant clam populations have been over‐exploited throughout their range over the past decades for meat and shells. Tridacna maxima, commonly known as ‘small giant clam’, has remained relatively untargeted by fishers in areas where larger species occur (e.g. squamosa ), high densities of are still observed on some isolated enclosed reefs Central Pacific. However, it is unclear whether reported discrepancies worldwide reflect differences fishing pressure only or a combination...

Marine sponges have a long history of farming, starting with bath over 5000 years ago in the Mediterranean. Many species since been found appropriate for distinct types commercial assessment. Drug development relies on isolation sponge-derived secondary metabolites as natural compounds having wide range ecological functions, from deterring predation to preventing microbial infection/proliferation sponge body. For human society, they feature broad array pharmacological properties some...

Shell growth, reproduction, and natural mortality of the giant clam Tridacna maxima were characterized over a two-year-period in lagoon high island Tubuai (Austral Archipelago) semi-closed Tatakoto (Tuamotu French Polynesia. We also recorded temperature, water level, tidal slope, range, mean wave height both lagoons. Lower aperture exposure to oceanic swells at than was responsible for lower renewal, as well higher variability temperature level across studied period. These different...

Abstract This review features recent updates on planktonic community alteration attributed to shellfish farming across three major drivers: predation, nutrient availability and the hydrodynamic environment. The grazing pressure generated by filter‐feeder communities (shellfish epibionts) constitutes a ‘top‐down’ control of in aquaculture areas, inducing significant depletion organism concentration. By selecting larger cells during filtration process, also favour smaller organisms water...

In remote and scattered islands, where space resources for waste treatment are limited, the mismanagement of plastic gives rise to significant global environmental threats. Addressing this issue requires a clear understanding how accumulates over year, particularly in areas heavily reliant on industries such as aquaculture. While aquaculture sector is often primary economic social importance these regions, it also major contributor pollution due its extensive use rearing structures. However,...

ABSTRACT The black‐lip pearl oyster Pinctada margaritifera is a protandrous hermaphrodite species. Its economic value has led to the development of controlled hatchery reproduction techniques, although many aspects remain be optimized. In order understand reproductive mechanisms and their controlling factors, two independent experiments were designed test hypotheses gametogenesis sex ratio control by environmental hormonal factors. one, oysters exposed under conditions at different...

AEI Aquaculture Environment Interactions Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 5:209-219 (2014) - DOI: https://doi.org/10.3354/aei00107 Influence of farmed pearl oysters and associated biofouling communities on nutrient regeneration in lagoons French Polynesia Elise Lacoste1, Yannick Gueguen2, Gilles Le Moullac2, Manaarii Sham Koua2, Nabila Gaertner-Mazouni1,* 1Université de la...

The genomics of economically important marine bivalves is studied to provide better understanding the molecular mechanisms underlying their different reproductive strategies. recently available gonad transcriptome black-lip pearl oyster Pinctada margaritifera a novel and powerful resource study these in mollusks displaying hermaphroditic features. In this study, RNAseq quantification data P. were analyzed identify candidate genes histologically-characterized samples signatures female male...

Environmental parameters, such as food level and water temperature, have been shown to be major factors influencing pearl oyster shell growth molecular mechanisms involved in this biomineralization process. The present study investigates the effect of (i.e., microalgal concentration) laboratory controlled conditions, on last stages mineralization order assess their impact quality. To end, grafted oysters were fed at different levels subjected temperatures one month prior harvest evaluate...

Previous seascape genetics studies have emphasized the role of ocean currents and geographic distances to explain genetic structure marine species, but benthic habitat has been more rarely considered. Here, we compared population observed in West Pacific giant clam populations against model simulations that accounted composition configuration, geographical distance, oceanic currents. Dispersal determined by distance provided a modelled better agreement with observations than dispersal...

Monitoring gonadmaturation for protandrous and functional hermaphrodite species such as the giant clamTridacna maxima is difficult due to juxtaposition relative proportion ofmale female tissues in gonad [gonadal sex ratio (GSR)]. Here, relevance of widely used gonadosomatic index (GSI) proxy clam maturation tested with a large dataset (n = 265). Gonadosomatic compared other indices, namely male part harboring spermatozoids, empty oocyte follicles, mean diameter, elongation. At scale, high...