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>Influence of fouling on the growth and survival of the tropical scallop,Euvola(Pecten)ziczac(L. 1758) in suspended culture
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Influence of fouling on the growth and survival of the tropical scallop,Euvola(Pecten)ziczac(L. 1758) in suspended culture
abstractTo examine the impact of fouling organisms on the growth and survival of the scallopEuvola ziczacL., we maintained 31‐34‐mm juveniles in pearl nets at 8 m in depth at Turpialito, Golfo de Cariaco, Venezuela. The experiment ran for a 67‐d period under four conditions: (1) shells and nets cleaned; (2) shells not cleaned and nets cleaned; (3) shells cleaned and nets not cleaned; and (4) shells and nets not cleaned. The growth of the scallop was least when fouling developed on both the pearl nets and scallop shells. The rate of growth of the shell (height and mass) was strongly affected by organisms colonizing the pearl nets and only weakly affected by organisms colonizing the shells. Fouling organisms on the shells only slightly affected rates of increase of tissue mass, but probably accounted for increased mortality. In developing commercial culture ofE. ziczac,strategies need to be developed to limit the adverse effects of fouling on
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机译:摘要为了研究污垢生物对扇贝Euvola ziczacL.生长和存活的影响,我们在委内瑞拉Golfo de Cariaco的Turpialito的珍珠网中饲养了31-34-mm的珍珠网幼鱼。该实验在四个条件下进行了 67 天:(1) 清洁贝壳和渔网;(2)贝壳未清洗,渔网未清洗;(3)贝壳清洗不干净,网不清洗;(4)未清洗的贝壳和渔网。当珍珠网和扇贝壳上都出现污垢时,扇贝的生长最少。贝壳的生长速度(高度和质量)受到定植于珍珠网的生物体的强烈影响,而受定植于贝壳的生物体的影响很小。贝壳上的污染生物仅略微影响了组织质量的增加速度,但可能是死亡率增加的原因。在发展商业文化方面。ZICZAC,需要制定策略来限制结垢对
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