The impact of toxic algae on scallop culture and fisheriesстатья из журнала
Аннотация: Abstract Harmful algal blooms occur worldwide and their associated phycotoxins are accumulated by filter‐feeding bivalve molluscs. Because only the adductor muscle of scallops has been traditionally marketed, scallops are not usually included in routine monitoring programs. A renewed interest in marketing both whole and "roe‐on"; scallops from various geographic regions along with intensified aquaculture ventures in areas prone to toxic blooms have provoked public health concerns regarding the safety of this resource. Our studies have focused on the sequestering and biotransformation of phycotoxins in scallops. Our results, coupled with a review of historic data, indicate that (1) toxins are not distributed evenly throughout the scallop tissues—more toxin is usually concentrated in the mantle and digestive gland; (2) some scallop tissues, e.g., digestive glands and mantles, remain highly toxic throughout the year; (3) toxicity varies considerably (43.5% coefficient of variation) between individual animals collected in the same area; (4) no correlations could be made between toxicity levels in gonadal tissue and other tissues. Scallop culture and commercial fisheries can thrive in areas prone to toxic algal blooms if only the adductor muscle is utilized. Safe marketing of roe‐on scallops is feasible only under strict regulatory regimes. Marketing of mantles or whole scallops poses a high risk to public health and should be undertaken only after extensive monitoring. Scallop mariculturists should be acutely aware of the potential risks associated with phycotoxins. Furthermore, public health guidelines, with particular emphasis on toxin levels in individual tissues, is necessary if scallops are to be marketed whole or in conjunction with tissues other than adductor muscles.
Год издания: 1993
Авторы: Sandra E. Shumway, Allan Cembella
Издательство: Taylor & Francis
Источник: Reviews in Fisheries Science
Ключевые слова: Marine Toxins and Detection Methods, Marine Biology and Environmental Chemistry, Animal Ecology and Behavior Studies
Открытый доступ: closed
Том: 1
Выпуск: 2
Страницы: 121–150