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1.
海藻营养代谢研究进展——海藻营养代谢的调节 总被引：3，自引：1，他引：3
介绍影响海藻 (尤其是大型海藻 )主要营养盐 ( N,P,C)吸收的环境因子 (如光照、温度及水流 )对营养盐主动吸收过程中的能量提供 ,酶含量和活性的影响以及水流对藻体周围营养盐离子进入细胞的调节 ;化学因素 (营养盐离子或分子的浓度、形式、海水介质的 p H)对海藻选择吸收不同形式营养盐离子及其相互作用的调节过程 ;生物因素 (藻体形态、组织的类型及海藻的年龄和营养史 )通过细胞内不同水平营养库的积累和相互转变而对海藻营养吸收和同化的调节 ;N代谢与 C代谢的生化偶连关系。 相似文献
2.
介绍影响海藻(尤其是大型海藻)主要营养盐(N,P,C)吸收的环境因子(如光照、温度及水流)对营养盐主动吸收过程中的能量提供，酶含量和活性的影响以及水流对藻体周围营养盐离子进入细胞的调节；化学因素(营养盐离子或分子的浓度、形式、海水介质的pH)对海藻选择吸收不同形式营养盐离子及其相互作用的调节过程；生物因素(藻体形态、组织的类型及海藻的年龄和营养史)通过细胞内不同水平营养库的积累和相互转变而对海藻营养吸收和同化的调节；N代谢与C代谢的生化偶连关系。 相似文献
3.
海藻细胞内含有丰富的多糖,是未来海洋生物医药研究领域的前沿热点。目前,海藻多糖积累主要聚焦于大型海藻,与大型海藻相比,海洋微藻具有种类繁多、操作简单、测定精准等优势,是亟待挖掘的有潜力的海洋生物医药的种质资源。文章从药用海藻资源的开发、药用海藻资源的培养、海藻生物制药的环境保障分析入手,分析海洋生物制药存在的瓶颈,挖掘切实可行的解决途径,提出“海洋微藻生物制药全链条”新理念,为助推海洋强国建设、提升海洋生物医药的经济效益和市场竞争力奠定基础。 相似文献
4.
细胞穿膜肽能够介导外源物质进入细胞,是一种简单高效的分子运输手段。传统的大型海藻外源物质转导方法较为复杂,并且效率偏低。目前尚没有将细胞穿膜肽应用于大型海藻的报道。本实验利用细胞穿膜肽九聚精氨酸(R9)对浒苔、紫菜和海带这三种常见的大型海藻进行转入,观察其转导效果,并测定转导后藻体光合作用效率的变化。实验结果表明,细胞穿膜肽R9能够成功的转入三种大型海藻,转入的效率与藻体细胞壁结构有一定联系;转导后藻体的Fv/Fm、ETR(I)和ETR(II)没有明显变化,说明R9对大型海藻的光合作用没有负面影响。本实验建立了一种新型的大型海藻外源物质转导方法,为今后的大型海藻育种,分子转化以及外源物质转入机制等研究奠定了基础。 相似文献
5.
大型海藻与海洋微藻间竞争研究进展 总被引：11，自引：1，他引：11
由于陆源污染物对海洋的污染日趋加重，藻类水华已成为世界各地近岸海域普遍存在的现象，对人类生活直接造成危害的是一些有毒海洋微藻的水华(即有害赤潮HAB)。但近年来，在海洋沿岸带如河口、海湾等水体较浅的透光层内，以石莼等绿藻为主要代表的大型海藻亦开始泛滥，形成大型海藻的水华，人们注意到，在同一水体内，大型海藻的水华通常与海 相似文献
6.
大型海藻(Macroalgae)依据光合色素的不同而分为红藻(Rhodophyta),褐藻(Phaeophyta)和绿藻(Chlorophyta),它们是海洋环境中重要的初级生产者.大型海藻可以直接为人类提供食物,也可以作为饲料转化为动物性蛋白.同时,大型海藻还是重要的药源生物.近年,我国科学家仅利用海带就成功得开发出了PSS、肾海康和甘糖酯等多种药物.此外,由于大型海藻是自养生物,对改善近岸富营养化水域有重要作用.我国已经形成了大型海藻育苗、栽培、加工到精加工的产业集群[1].据世界粮农组织(FAO)统计,2006年中国海藻养殖业产值为52亿美元,居世界首位[2].2008年,我国大型海藻养殖产量为150.3万吨(干质量),占我国海水养殖总量的11.5％,养殖面积9.4万ha,年产值近400亿元,提供近100万劳动力就业岗位,具有重要的社会经济意义[3]. 相似文献
7.
4种大型海藻单养和两两混养条件下生长以及营养盐的吸收利用 总被引：2，自引：0，他引：2
《海洋湖沼通报》2017,(2)
近年来海水富营养化导致近海海域大型海藻过量繁殖,为研究大型海藻与营养盐的相互关系,我们采用实验生态学的方法研究了4种大型海藻(孔石莼、小珊瑚藻、缘管浒苔、石花菜)单养和两两混养条件下的生长、营养盐(PO4-P和NO3-N)含量变化以及营养盐吸收利用情况。结果表明,单养条件下,孔石莼的湿重增长最多(46.4%),其相对增长率显著高于缘管浒苔、小珊瑚藻、石花菜。孔石莼+缘管浒苔、孔石莼+小珊瑚藻、孔石莼+石花菜混养体系中,孔石莼的相对增长率显著高于缘管浒苔、小珊瑚藻、石花菜,其他混养体系中两种大型海藻的相对增长率无显著差异。在单养条件下培养10d,海藻对PO4-P、NO3-N的利用率分别以孔石莼(85.4%)、缘管浒苔(72.6%)为最大,而石花菜对两种营养盐的利用率均最小(51.1%和57.1%)。在混养条件下,PO4-P、NO3-N的最高利用率分别出现在孔石莼+小珊瑚藻(86.3%)和缘管浒苔+小珊瑚藻(81.7%)体系中。无论单养还是混养,海藻对PO4-P和NO3-N的吸收速率都在第2d达到峰值。因此,大型海藻可以有效地去除营养盐,4种藻中,孔石莼和缘管浒苔分别是去除PO4-P和NO3-N的最佳大型海藻。本研究结果可以为利用大型海藻进行环境污染的治理提供支持。 相似文献
8.
为研究岩相潮间带大型海藻有机碳含量及δ~(13)C值的季节变化特征,分别于2016年11月(秋)和2017年2月(冬)、5月(春)、8月(夏)对獐子岛岩相潮间带(39°01′E,122°43′N)的大型海藻进行调查,并对其有机碳含量和δ~(13)C值进行分析。结果表明:共鉴定出大型海藻3门49种,其中红藻门24种,占总数的48.98%;褐藻门17种,占总数的34.69%;绿藻门8种,占总数的16.33%。大型海藻种类数为春季(35种)冬季(24种)=夏季(24种)秋季(23种)。不同种类海藻体内的有机碳含量为15.54%～35.03%,δ~(13)C值在–33.42‰～–7.43‰之间变动。不同季节海藻体内有机碳含量为冬季春季夏季秋季,δ~(13)C值为夏季春季冬季秋季。 相似文献
9.
海藻场是生物多样性最高的生态系统之一, 其内部的沉积物有机质是支撑海藻场生物多样性的重要物质基础之一。本研究以浙江省嵊山岛北部无人村沿岸的天然海藻场为研究对象, 在大型海藻凋落期6~8月采集沉积物和端元生物样本, 分析了沉积物样本的粒径组成、总有机碳 (TOC)、总氮(TN)、碳氮比值(C/N)和碳氮稳定同位素(δ13C和δ15N), 通过贝叶斯稳定同位素混合模型评估了沉积物有机质的来源及变化规律。结果显示, 1)海藻场沿岸沉积物中粉砂占比最大, 砂的占比最低, 沉积物类型为黏土质粉砂; 2)沉积物TOC、TN、C/N、δ13C和δ15N范围分别为0.70%~2.41%、0.11%~0.41%、5.53~6.48、–21.79‰~–19.60‰和1.56‰~4.26‰, 在空间分布上, TOC与TN含量均随离岸距离增加而下降; 3)沉积物粒径组成、C/N比值、δ13C和δ15N之间的关系显示沉积物有机质主要来源于大型海藻和浮游植物的混合贡献; 4)根据贝叶斯同位素混合模型计算结果显示, 大型海藻对沉积物有机质贡献率在2.30%~45.60%, 在空间分布上, 大型海藻对沉积物有机质的贡献率随离岸距离增加而下降; 5)海藻碎屑产生量和沉积物有机碳沉积量评估结果显示, 大型海藻产生的碎屑有机质中有11.98%进入海藻场及沿岸海域的表层沉积物中。本研究为评估海藻场碎屑的产生规模和时空分布, 以及渔业资源养护功能提供了数据支撑。 相似文献
10.
秦皇岛海域属于我国渤海区域典型的大型海藻分布区,该海区资源丰富,在我国大型海藻区系中占有较为重要的位置。于2021年秋季在该海域采集石花菜(Gelidium amansii)样品进行活体培养,对其藻体附生的其他季节大型海藻的状况加以观察研究。通过实验生物学方法对石花菜附生藻生殖特征和生态习性进行了观察,结合附生藻形态特征进行物种分类鉴定。经过培养与鉴定,确定该水域石花菜的附生大型海藻共有7种,其中红藻4种,即丛出旋体藻(Audouinelladaviesii)、旋体藻(Auduinella sp.)、茎丝藻小枝变型(Stylonema alsidii f. ramosum)和日本新管藻(Neosiphonia japonica);绿藻2种,即苍白刚毛藻(Cladophora albida)和浒苔[Enteromorpha (Ulva) prolifera];蓝藻1种,即丝状鞘丝藻(Lyngbya confervoides);丛出旋体藻、茎丝藻小枝变型和苍白刚毛藻为河北海域的新记录物种。研究结果表明,室内人工培养可作为个体微小的附生大型海藻分类鉴定的有效补充方法,也能为分子鉴定提供纯净的... 相似文献
11.
Allelopathic effects of several concentrations of fresh tissue,dry powder and dry tissue of three bloom-forming green macroalgae Ulva pertusa,Ulva linza and Enteromopha intestinalis on the red tide microalga Heterosigma akashiwo were evaluated in microcosms systems.The effects of macroalgae culture medium filtrate were investigated on H.akashiwo using initial or semi-continuous filtrate addition.Preliminary studies on the algicidal effects of one aqueous and four organic solvent extracts from the macroalgae on the microalga were carried out to confirm the existence of allelochemicals in the tissue of these macroalgae.The dry powder of U.pertusa was extracted with methanol,and the methanol extracts were partitioned to petroleum ether phase,ethyl acetate phase,butanol phase and distilled phase by liquid-liquid fractionation.The bioassays of the activity of every fraction were carried out on H.akashiwo.The resultant microcosms assay showed that the growth of H.akashiwo was strongly inhibited by using fresh tissues,dry powder or dry tissue of these three macroalgae,while aqueous and methanol extracts of both macroalgae had strong inhibitory effects on the growth of H.akashiwo,and the EC 50 values for methanol extract of U.pertusa,U.linza or E.intestinalis were 0.016,0.028×10-12 or 0.033×10-12,respectively.While the other three organic solvent extracts（acetone,ether and chloroform） had no apparent effect on its growth,this suggests that the allelochemicals from these three macroalgae had relatively high polarities.The activity of petroleum ether phase,ethyl acetate phase,butanol phase and distilled phase of U.pertusa methanol extract was carried out on H.akashiwo indicating that petroleum ether phase and ethyl acetate phase had stronger algicidal effect on H.akashiwo.The inhibition effect of the ethyl acetate phase was not as strong as that of petroleum ether phase,and effective concentration of petroleum ether phase was 17 mg/L for H.akashiwo.However,no significant algicidal effects were observed on the butanol phase and distilled water phase.These three macroalgae＇s culture medium filtrate exhibited no apparent growth inhibitory effect on the microalga under initial filtrate addition whereas the growth of H.akashiwo was significantly inhibited under semi-continuous filtrate addition,which suggests that continuous release of small quantities of rapidly degradable allelochemicals from the fresh tissue of both macroalgae was effective in inhibiting the growth of H.akashiwo. 相似文献
12.
为了优化蛏苗集约化平面流中间培育技术,研究了不同进水流速和苗种规格对缢蛏中间培育效果的影响,并分析了集约化平面流中间培育系统的水质状况。结果显示,不同进水流速对缢蛏稚贝生长影响显著,稚贝生长速率随进水流速增加而增加,但成活率下降。通过流速与成活率和体质量日增生长量的线性回归分析,估算0.163L/s为适宜的进水流速。在适宜流速和相同放苗重量下,大规格苗种(8万粒/kg)生长速度显著高于小规格苗种(18万粒/kg),但因为小规格组放苗数量多,小规格组单位面积质量较其高出23.72%。除低流速组以外,平面流中间培育过程对叶绿素a和铵态氮有良好的去除效果,去除率分别达到36.99%和3.88%以上,这表明平面流集约化中间培育在利用海水池塘水体进行苗种中间培育的同时,也起到了池塘养殖水体的净化作用。综合认为,在养殖密度0.5kg/m^2、流速0.163 L/s的培育条件下,可以保证水体自污染程度较低,缢蛏苗种生长较快,成活率在73.12%以上。 相似文献
13.
多肽菌素作为一类具有抗菌活性的生物短肽,是一种可以替代抗生素的生物肽。为了推广多肽菌素在水产养殖中的应用,本研究以长牡蛎(Crassostreagigas)人工育苗为基础,以添加2×10_(–6) mol/L青霉素钠为对照组,以添加5个不同浓度(2×10_(–6)、4×10_(–6)、6×10_(–6)、8×10_(–6)、10×10_(–6) mol/L)多肽菌素为实验组,研究多肽菌素在长牡蛎人工育苗生产中的应用。结果显示:(1)在长牡蛎种贝培育方面,培育前8天各组差异不显著(P 0.05),培育后期添加6×10_(–6) mol/L多肽菌素组存活率均最高,对照组最低,且培育至32天时该实验组均显著高于其他组(P0.05)。(2)在长牡蛎幼虫培育方面,幼虫壳高日增长量在添加6×10_(–6) mol/L多肽菌素组中最大,为11.57μm/d,而对照组仅为9.61μm/d;幼虫存活率方面对照组始终最低,而添加6×10_(–6) mol/L与8×10_(–6) mol/L多肽菌素组均保持较高存活率,显著高于对照组(P 0.05)。(3)在长牡蛎幼虫附着变态方面,添加6×10_(–6) mol/L多肽菌素组附着率最高、附着时间最短,且均与对照组差异显著(P0.05)。(4)在长牡蛎稚贝培育方面,稚贝壳长日增长量实验组均高于对照组,且随添加浓度的上升,日增长量也随之增加;稚贝存活率在添加6×10_(–6) mol/L多肽菌素组达到最高,与对照组差异显著(P0.05)。结果表明,使用多肽菌素与使用青霉素钠相比,多肽菌素显著提高了整个牡蛎培育过程中的存活率、生长速度、及附着变态率,这也为多肽菌素在贝类育苗生产中的推广提供了基础依据。 相似文献
14.
利用光生物反应器培养雨生红球藻的研究初探 总被引：1，自引：0，他引：1
用光生物反应器与光照培养箱两种培养容器培养雨生红球藻(Haematococcus pluvialis),对雨生红球藻在两种容器培养过程中细胞生长、pH值、溶解氧(DO)及虾青素积累情况进行比较,同时比较不同接种密度对光生物反应器培养效果的影响。实验表明,光生物反应器中藻细胞的调整期较短,接种1 d后即进入指数生长阶段,在胁迫阶段则仅需4 d即达到虾青素含量的峰值;将pH值控制在偏碱性条件下(7.75±0.10)有利于藻细胞更好生长;营养培养阶段DO相对饱和度上升至80%,而在胁迫阶段则迅速降低,最低值小于6%;较高的接种密度(2.3×104个/mL)具有较短的营养培养周期(7 d),且因接种密度变化对胁迫周期长短无明显影响(均为4 d),选用较高的接种密度可望降低工业生产成本。 相似文献
15.
Using industry inspection video and ROV imaging, we examined Lophelia pertusa (Linnaeus 1758) on 10 artificial structures of known ages (9 to 100 years) in the northern Gulf of Mexico (GoM). Five different types deep-water energy installations with depths ranging from 320 to 995 m, and three shipwrecks with depths ranging from approximately 530 to 615 m, were examined. Density, depth ranges, and growth rates of L. pertusa colonies were calculated from video and image analysis. L. pertusa colonies were present on all structures examined. Minimum calculated growth rates for the largest colonies ranged from 0.32 to 3.23 cm/yr on the different structures. The shallowest depth at which L. pertusa was observed was 201 m and the deepest was 801 m, considerably expanding the known depth range of this species in the northern GoM. Colony density varied with structure type, age, and depth, with the highest density between 503 and 518 m on the single structure that spanned the entire depth range of occurrence of L. pertusa observed in this study. L. pertusa colonies growing on thinner and deeper installations appear to have higher colonization rates, i.e. to develop higher densities over a shorter time period, compared to those on shallower and more massive types of installations. However, on average, colonies have slower growth rates on these installations than colonies on more massive, shallower installations (compliant and solid installations). In general, the calculated minimum growth rates were higher on the installations than on the shipwrecks, which were substantially older. A continuum of colony sizes was documented on all installations, suggesting multiple settlement events. L. pertusa thickets were observed on the oldest anthropogenic structures, with most of the components of these structures covered by colonies of L. pertusa. Brown, orange, and mottled color-variants were documented for the first time in the GoM. All installations examined for this study were colonized by L. pertusa and it is likely that most artificial surfaces in appropriate depths in the GoM will be as well. 相似文献
16.
Andrew J. Davies Max Wisshak James C. Orr J. Murray Roberts 《Deep Sea Research Part I: Oceanographic Research Papers》2008,55(8):1048-1062
Ecological-niche factor analysis (ENFA) was applied to the reef framework-forming cold-water coral Lophelia pertusa. The environmental tolerances of this species were assessed using readily available oceanographic data, including physical, chemical, and biological variables. L. pertusa was found at mean depths of 468 and 480 m on the regional and global scales and occupied a niche that included higher than average current speed and productivity, supporting the theory that their limited food supply is locally enhanced by currents. Most records occurred in areas with a salinity of 35, mean temperatures of 6.2–6.7 °C and dissolved oxygen levels of 6.0–6.2 ml l−1. The majority of records were found in areas that were saturated with aragonite but had low concentration of nutrients (silicate, phosphate, and nitrate). Suitable habitat for L. pertusa was predicted using ENFA on a global and a regional scale that incorporated the north-east Atlantic Ocean. Regional prediction was reliable due to numerous presence points throughout the area, whereas global prediction was less reliable due to the paucity of presence data outside of the north-east Atlantic. However, the species niche was supported at each spatial scale. Predicted maps at the global scale reinforced the general consensus that the North Atlantic Ocean is a key region in the worldwide distribution of L. pertusa. Predictive modelling is an approach that can be applied to cold-water coral species to locate areas of suitable habitat for further study. It may also prove a useful tool to assist spatial planning of offshore marine protected areas. However, issues with eco-geographical datasets, including their coarse resolution and limited geographical coverage, currently restrict the scope of this approach. 相似文献
17.
ZHANG Naixing SONG Jinming CAO Conghu REN Rongzhu WU Fengcong ZHANG Shaoping SUN Xu 《海洋学报(英文版)》2012,31(1):73-82
The influence of macronitrogen (NO - 3 and NH + 4 ) addition with Ulva pertusa on dissolved inorganic carbon system in seawater was studied. The results indicate that p(CO 2 ) and HCO 3 concentration decrease significantly, while pH and CO 2- 3 concentration increase significantly. When the concentration of NO 3 was less than 71 μmol/dm 3 or NH + 4 was less than 49.7 μmol/dm 3 , dissolved inorganic carbon (DIC) absorption rates by Ulva pertusa generally increased with the increasing of nitrogen concentration. The DIC decreased 151 μmol/dm 3 with the addition of 71 μmol/dm 3 NO 3 and decreased 232 μmol/dm 3 with the addition of 49.7 μmol/dm 3 NH + 4 after the experiment compared with DIC measured without nitrogen addition. A significant negative-correlation was found between c(DIC) and growth rate (μ) of Ulva pertusa (r = -0.91, P <0.000 1, n=11). NH + 4 had more influence on the species of inorganic carbon system than NO 3 . 相似文献
18.
2015年5月至2016年7月在辽宁省大连市黑石礁海域发现红皮藻科入侵种具孔斯帕林藻Sparlingia pertusa(Postels et Ruprecht)G.W.Saunders,I.M.Strachan et G.T.Kraft,对其进行了详细的形态结构观察和分子系统分析。结果表明:(1)藻体直立;成熟藻体高0.2—0.8m;呈红色或暗红褐色;藻体表面分布着密集的孔洞;皮层由2—3层圆形细胞组成;髓部由3—5层椭圆形薄壁细胞组成。(2)rbc L基因序列分析结果显示本研究的6个具孔斯帕林藻样本之间无碱基差异,与产自日本的样本无碱基差异,与美国和加拿大产的样本之间的碱基序列差异为1bp(0.98%);COI基因序列分析结果显示本研究的6个具孔斯帕林藻样本之间无碱基差异,与产自加拿大的样本之间无碱基差异。具孔斯帕林藻在我国海域首次发现为中国新纪录种,同时发现斯帕林藻属Sparlingia G.W.Saunders,I.W.Strachan et G.T.Kraft为中国新纪录属,认为海洋经济物种太平洋牡蛎和虾夷扇贝的引进、船舶压舱水以及海水的流动等是该种入侵的主要原因。 相似文献
19.
Importance of seep primary production to Lophelia pertusa and associated fauna in the Gulf of Mexico
Erin L. Becker Erik E. Cordes Stephen A. Macko Charles R. Fisher 《Deep Sea Research Part I: Oceanographic Research Papers》2009,56(5):786-800
To investigate the importance of seep primary production to the nutrition of Lophelia pertusa and associated communities and examine local trophic interactions, we analyzed stable carbon, nitrogen, and sulfur compositions in seven quantitative L. pertusa community collections. A significant seep signature was only detected in one of the 35 species tested (Provanna sculpta, a common seep gastropod) despite the presence of seep fauna at the three sample sites. A potential predator of L. pertusa was identified (Coralliophila sp.), and a variety of other trophic interactions among the fauna occupying the coral framework were suggested by the data, including the galatheid crab Munidopsis sp. 2 feeding upon hydroids and the polychaete Eunice sp. feeding upon the sabellid polychaete Euratella sp. Stable carbon abundances were also determined for different sections of L. pertusa skeleton representing different stages in the growth and life of the aggregation. There was no temporal trend detected in the skeleton isotope values, suggesting that L. pertusa settles in these areas only after seepage has largely subsided. Isotope values of individual taxa that were collected from both L. pertusa and vestimentiferan habitats showed decreasing reliance upon seep primary production with average age of the vestimentiferan aggregation, and finally, no seep signature was detected in the coral collections. Together our data suggest that it is the presence of authigenic carbonate substrata, a product of past seep microbial activity, as well as hydrodynamic processes that drive L. pertusa occurrence at seep sites in the Gulf of Mexico, not nutritional dependence upon primary production by seep microbes. 相似文献
20.
Allelopathic interactions between the macroalga Ulva pertusa and eight microalgal species 总被引：1，自引：0，他引：1
Growth of Ulva pertusa and eight microalgal species, Heterosigma akashiwo, Skeletonema costatum, Tetraselmis subcordiformis, Nitzschia closterium, Chaetoceros gracile, Chroomonas placoidea 1967, Isochrysis galbana 8701, and Alexandrium tamarense, was examined in a series of batch, semi-continuous and isolated co-cultures (U. pertusa and one microalgal species). The results of the experiments with co-cultures confirmed the secretion of allelopathic substances by U. pertusa. Growth was significantly (p<0.05) suppressed in each of the macroalgal species in batch co-cultures, nutrient replete semi-continuous co-cultures and isolated co-cultures. The percentage growth reduction varied between 42 and 100% in batch co-cultures, between 28 and 100% in semi-continuous co-cultures, and between 21 and 100% in isolated co-cultures. In addition, we examined the potential allelopathic effect of U. pertusa culture filtrate. The Ulva culture filtrate significantly (p<0.01) inhibited the growth of C. placoidea from 2 days after incubation until the end of the experiment, and it exhibited no inhibitory effect on the growth of the other microalgal species. This may suggest that the allelochemicals released from U. pertusa are rapidly degradable.The microalgae tested exhibited different (stimulatory, inhibitory or no) effects on the growth of U. pertusa. U. pertusa grew faster with H. akashiwo (+16%) and S. costatum (+9%), less with T. subcordiformis (−20%), N. closterium (−23%) and C. gracile (−30%), but was not significantly affected by I. galbana, A. tamarense and C. placoidea. The microalgae tested exhibited no clear allelopathic effects on U. pertusa. 相似文献