Settlement of oyster Magallana bilineata (Röding, 1798) spat in the natural environment: seasonality and substrate texture preference

IF 0.8 4区生物学 Q3 ZOOLOGY

Molluscan Research Pub Date : 2022-04-03 DOI:10.1080/13235818.2022.2073651

M. Lebata-Ramos, Cleresa S. Dionela, E. Solis, Jonas P. Mediavilla, Rema C. Sibonga, Schedar Rose M. Novilla

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引用次数: 1

Abstract

ABSTRACT This study determined the seasonality of Magallana bilineata spat settlement in a natural oyster bed and established surface texture preference of competent larvae by comparing the numbers of spat settling on the smooth and rough surfaces of ceramic tiles over a period of 31 months. This will guide farmers when to deploy cultches to maximise spat harvest. Regardless of tile orientation, spat numbers were significantly higher on the rough side (129.07 ± 9.3 m−2) than on the smooth side (66.95 ± 7.0 m−2). Spat collection was highest in March, June and July in each of 2015, 2016 and 2017. There was no significant correlation between the number of spat settling in each month with temperature, salinity, pH, dissolved oxygen (DO), sulphide, phosphate, nitrate, nitrite and ammonia concentrations, plankton density measured at deployment and retrieval of tiles, except for DO during deployment. The only significant correlations with mean shell length (SL) were with DO and ammonia during tile retrieval. Mean SL did not significantly differ between tile orientations and surfaces but differed between months, being highest in August 2015 and August 2016. From these results, it is best to deploy roughened cultches in this particular area in March, June and July.

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牡蛎Magallana bilineata (Röding, 1798)在自然环境中的定居:季节性和基质质地偏好

摘要本研究确定的季节性Magallana bilineata争端解决在天然牡蛎的床上,建立了表面纹理主管幼虫的偏好比较多的争端解决瓷砖的光滑和粗糙的表面在一段时间内的31个月。这将指导农民何时部署滴管以最大限度地提高水珠产量。无论瓷砖朝向如何，粗糙面(129.07±9.3 m−2)的水珠数量明显高于光滑面(66.95±7.0 m−2)。2015年、2016年和2017年的3月、6月和7月痰量最高。除部署期间的溶解氧(DO)、硫化物、磷酸盐、硝酸盐、亚硝酸盐和氨氮浓度、浮游生物密度外，每个月的沉降数量与部署时的温度、盐度、pH、溶解氧(DO)、硫化物、磷酸盐、硝酸盐、亚硝酸盐和氨氮浓度均无显著相关。与平均壳长(SL)唯一显著相关的是DO和氨氮。平均SL在瓷砖朝向和表面之间没有显著差异，但在月份之间存在差异，2015年8月和2016年8月最高。从这些结果来看，最好在3月、6月和7月在这一特定地区部署粗糙的culches。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Molluscan Research 生物-动物学

CiteScore

1.80

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： Molluscan Research is an international journal for the publication of authoritative papers and review articles on all aspects of molluscan research, including biology, systematics, morphology, physiology, ecology, conservation, biogeography, genetics, molecular biology and palaeontology. While the scope of the journal is worldwide, there is emphasis on studies relating to Australasia and the Indo-west Pacific, including East and South East Asia. The journal’s scope includes revisionary papers, monographs, reviews, theoretical papers and briefer communications. Monographic studies of up to 73 printed pages may also be considered. The journal has been published since 1957 (as the Journal of the Malacological Society of Australia until 1993). It is free to members of the Malacological Society of Australasia and the Society for the Study of Molluscan Diversity.