期刊文献+
共找到192篇文章
< 1 2 10 >
每页显示 20 50 100
The Allocation of Some Pelagic Larvae of Bivalve Mollusks in the Western Part of Chukchi Sea 预览
1
作者 Delik Dokkovich Gabaev 《环境科学与工程:A》 2019年第2期49-57,共9页
Collected in September-October 2016 in the 48th cruise of SRS “Academician Oparin” the plankton samples with the assistance of Norpac net with the cell of 150 μm in the horizon 15-0 m have shown the plenty of pelag... Collected in September-October 2016 in the 48th cruise of SRS “Academician Oparin” the plankton samples with the assistance of Norpac net with the cell of 150 μm in the horizon 15-0 m have shown the plenty of pelagic larvae of bivalve mollusk in Chukchi Sea. Its biggest quantity was found in the period from the 22nd of September until the 1st of October. The most yield area was situated on the opposite side of the Bering Strait and the second maximum of larvae quantity was found on the Herald’s bank. Most valuable factors influencing the territorial allocation of the researched larvae are the water surface temperature and the water depth. 展开更多
关键词 CHUKCHI Sea ALLOCATION of PELAGIC LARVAE of BIVALVE mollusks
在线阅读 下载PDF
Distribution of methylsiloxanes in benthic mollusks from the Chinese Bohai Sea
2
作者 Liqin Zhi Lin Xu +2 位作者 Xudan He Chunhui Zhang Yaqi Cai 《环境科学学报:英文版》 SCIE EI CAS CSCD 2019年第2期199-207,共9页
Methylsiloxanes are a class of silicone compounds that have been widely used in various industrial processes and personal care products for several decades. This study investigated the spatial distribution of three cy... Methylsiloxanes are a class of silicone compounds that have been widely used in various industrial processes and personal care products for several decades. This study investigated the spatial distribution of three cyclic methylsiloxanes (D4–D6) and twelve linear methylsiloxanes (L5–L16) in mollusks collected from seven cities along the Bohai Sea. D4–D6 (df=71%–81%) and L8–L16 (df=32%–40%) were frequently detectable in the mollusk samples, while L5–L7 were not found in any mollusk samples. Cyclic methylsiloxanes (D4–D6) were found in mollusks with the mean concentrations of 15.7±12.3ng/g ww for D4, 24.6±15.8ng/g ww for D5 and 34.0±23.0ng/g ww for D6. Among the seven sampling cities, the cyclic methylsiloxanes were predominant in mollusks, with the total cyclic methylsiloxanes (sum of D4–D6, ∑ CMS) accounting for 74.2%–80.7% of the total methylsiloxanes. ∑ CMS along the coastline demonstrated a clear gradient, with the highest concentrations in mollusks at the sampling sites located in the western part of the Bohai Sea and the lowest concentrations in mollusks from cities located in the eastern part of the Bohai Sea. The biota-sediment accumulation factors for cyclic methylsiloxanes (D4–D6) and linear methylsiloxanes (L8–L16) were estimated as 0.42±0.06–0.53±0.06 and 0.13±0.03–0.19±0.05, respectively. 展开更多
关键词 Methylsiloxane Mollusks SEDIMENT BIOACCUMULATION
Occurrence and Distribution of Marsh Clam, <em>Polymesoda</em>spp. in Marudu Bay, Sabah, Malaysia 预览
3
作者 Julian Ransangan Tan Kar Soon 《海洋科学期刊(英文)》 2018年第2期314-322,共9页
Marudu Bay is part of the Tun Mustapha Marine Park, the largest marine protected area within the Malaysian region of the Coral Triangle Initiative. The bay is known for its diversed fisheries resources including bival... Marudu Bay is part of the Tun Mustapha Marine Park, the largest marine protected area within the Malaysian region of the Coral Triangle Initiative. The bay is known for its diversed fisheries resources including bivalves. Although some of these bivalve species are commercially important, their occurrence, distribution and stock status in the bay are not well documented. Hence, the current study was conducted to determine the occurrence, distribution and the stock status of marsh clam, Polymerasoda spp. in the mangrove swamp situated at the southernmost of the Marudu Bay. Samplings were carried out at the mangrove swamps which covered an area of 500 sequare meter per sampling site. Two marsh clams species, Polymesoda erosa and P. expansa were found to inhabit the sampling sites. In general, juvenile marsh clams were noticed to dominate the seaward mangrove swamp, whereas the high tidal regions were dominated by adults. The current study also suggested a link in the distribution and the morphometric measurements of the marsh clams with the sediment grain size. 展开更多
关键词 Mollusks CORAL Triangle Initiative Tun Mustapha Marine Park
在线阅读 免费下载
南麂列岛海洋自然保护区岩相潮间带软体动物种类组成与数量分布 预览
4
作者 毕耜瑶 许永久 +4 位作者 俞存根 蔡厚才 陈万东 夏陆军 谢旭 《水产学报》 CSCD 北大核心 2018年第6期902-911,共10页
根据2013年11月、2014年2月、5月、8月对南麂列岛岩相潮间带7个断面进行的生物资源定量和定性调查所获得的软体动物资料,研究了该区域软体动物的种类组成和数量分布特征。结果显示:(1)共鉴定出软体动物种类63种,隶属于3纲13目34科52... 根据2013年11月、2014年2月、5月、8月对南麂列岛岩相潮间带7个断面进行的生物资源定量和定性调查所获得的软体动物资料,研究了该区域软体动物的种类组成和数量分布特征。结果显示:(1)共鉴定出软体动物种类63种,隶属于3纲13目34科52属。春、夏、秋、冬季出现的种类数分别是48种、48种、45种、41种。(2)不同季节软体动物资源数量不同,在个体数上是春季〉秋季〉冬季〉夏季;在重量上则是春季〉秋季〉夏季〉冬季;软体动物平均个体数和生物量分别为506.5个/m^2和801.54 g/m^2,且以春季为最大,冬季为最小。(3)不同潮区的软体动物平均个体数不同,具体是中潮区〉低潮区〉高潮区;生物量差异也很明显,具体是低潮区〉中潮区〉高潮区。(4)不同季节的优势种差异较大,但条纹隔贻贝是一年四季共有的第一大优势种。研究表明,由于受海流、地形、风浪等环境因素的影响,南麂列岛潮间带软体动物在不同季节、不同断面的分布差异较大。同时,通过与历史资料的对比发现,近二十年来,南麂列岛软体动物的物种数及数量有一定程度的减少。 展开更多
关键词 软体动物 潮间带 种类组成 时空分布 南麂列岛
在线阅读 下载PDF
基于多元统计分析的渔山列岛潮间带软体动物功能群和次级生产力比较 预览 被引量:2
5
作者 徐鹏 刘好真 +3 位作者 刘懂 焦海峰 王一农 尤仲杰 《海洋与湖沼》 CSCD 北大核心 2018年第1期151-159,共9页
渔山列岛于2008年成为国家级海洋生态保护区,为了解渔山列岛保护区内潮间带软体动物次级生产力的时空变化。于1982年和2010年的3个季节(春、夏、冬)在渔山列岛进行潮间带软体动物调查,采用多元统计分析软体动物时空差异,以Brey经验公... 渔山列岛于2008年成为国家级海洋生态保护区,为了解渔山列岛保护区内潮间带软体动物次级生产力的时空变化。于1982年和2010年的3个季节(春、夏、冬)在渔山列岛进行潮间带软体动物调查,采用多元统计分析软体动物时空差异,以Brey经验公式计算分析软体动物次级生产力(P值,P/B值)。结果表明,年际间物种食性结构发生了明显的改变,1982年潮间带软体动物对次级生产力贡献率最大的物种有单齿螺(Monodonta labio)、锈凹螺(Chlorostoma rustica),占软体动物总次级生产力的42.88%,2010年潮间带软体动物对次级生产力贡献率最大的物种有覆瓦小蛇螺(Serpulorbis imbricata)、条纹隔贻贝(Septifer virgatus),占软体动物总次级生产力的75.96%。1982年,年均栖息密度为2758ind/m2,年均生物量为2100.26g/m2,年均次级生产力为240.04g/(m2·a),年均P/B值为0.63a–1;2010年,年均栖息密度为699ind/m2,年均生物量为1101.85g/m2,年均次级生产力为94.82g/(m2·a),年均P/B值为0.55a–1。多因素方差分析表明软体动物次级生产力年际间差异显著(F=5.761,P〈0.05),季节间和潮位间差异都不显著(F=0.135,P〉0.05;F=2.076,P〉0.05),P/B的值较低,表明该海域软体动物世代更替速度较慢,2010年的P/B值(0.55a–1)低于1982年的P/B值(0.63a–1),表明近30年来群落结构受到影响。 展开更多
关键词 潮间带 软体动物 次级生产力 P/B值 渔山列岛
在线阅读 下载PDF
南黄海冷水中心内外夏季大型底栖动物群落分析 预览 被引量:3
6
作者 张鹏弛 徐勇 +4 位作者 李新正 王洪法 张宝琳 帅莲梅 安建梅 《海洋与湖沼》 CSCD 北大核心 2017年第2期312-326,共15页
根据1959年、2004年和2012年夏季航次的调查数据,研究南黄海冷水中心内、外大型底栖动物群落结构及年际变化。使用Shannon-Wiener多样性指数、Pielou均匀度指数、Margalef丰富度指数,平均分类差异指数以及丰度生物量比较曲线(abundance... 根据1959年、2004年和2012年夏季航次的调查数据,研究南黄海冷水中心内、外大型底栖动物群落结构及年际变化。使用Shannon-Wiener多样性指数、Pielou均匀度指数、Margalef丰富度指数,平均分类差异指数以及丰度生物量比较曲线(abundance-biomass comparison curves,ABC Curves)分析群落的组成与变化,使用相对重要性指数(index of relative importance,IRI)分析群落中的优势种和重要种。研究结果显示,3个航次共鉴定大型底栖动物112种,隶属18纲69科80属;其中冷水中心(Yellow Sea cold water mass core,YSCWMC)内33种,隶属16纲65科75属;冷水中心外87种,隶属7纲30科36属。两因素方差分析(Two-way ANOVA)结果显示三航次间时空尺度上冷水中心内、外的H′、J′和d的差异均不显著,物种丰度和物种生物量也未发生明显的改变。冷水中心内部群落的H′、J′和d变化幅度较冷水中心外部群落小,表明相较冷水中心外的群落,冷水中心内的群落结构较为稳定。分类差异变异指数及ABC曲线分析也显示冷水中心内、外的群落状况良好。通过比较冷水中心内、外物种组成发现冷水中心内软体动物(Mollusk)种类最多,其丰度和生物量在冷水中心内优势明显,且三个航次间软体动物物种改变较小。冷水中心内群落中的多毛类动物(Polychaeta)和棘皮动物(Echinodermata)虽在各年份分别占据优势种地位,丰度极高,但种类极少。冷水中心外群落中的多毛类动物和棘皮动物占据绝对优势,无论是种类数还是生物量都较其他种类高。在调查航次总生物量中,冷水中心内的软体动物生物量占总生物量的38%,而冷水中心外的仅占总生物量的3%,说明软体动物较为适宜生活在低温、高盐的冷水环境中。三年间分析调查显示冷水中心内软体动物的重要种及常见种有薄索足蛤(Thyasira tokunagai)、秀丽波纹蛤(Raetellops pulchella)、短 展开更多
关键词 南黄海冷水中心 生物多样性 群落结构 软体动物 大型底栖动物
在线阅读 下载PDF
软体动物扇贝横纹肌中类肌联蛋白的纯化 预览
7
作者 包玉龙 张三润 +3 位作者 萨日娜 郑明霞 邢万金 周好乐 《东北师大学报:自然科学版》 CAS CSCD 北大核心 2016年第4期111-115,共5页
利用含1mol/L尿素的0.15mol/L磷酸钾缓冲液(pH=7.0)从扇贝横纹肌肌原纤维中提取了相对分子质量为2.0×106的类肌联蛋白.将类肌联蛋白提取液添加到DEAETOYOPEARL 650M型层析柱,利用阴离子交换柱层析法对其进行了纯化,并利用共沉淀... 利用含1mol/L尿素的0.15mol/L磷酸钾缓冲液(pH=7.0)从扇贝横纹肌肌原纤维中提取了相对分子质量为2.0×106的类肌联蛋白.将类肌联蛋白提取液添加到DEAETOYOPEARL 650M型层析柱,利用阴离子交换柱层析法对其进行了纯化,并利用共沉淀法研究了扇贝类肌联蛋白与纤维型肌动蛋白(F-actin)的相互作用.结果表明:纤维型肌动蛋白不产生沉淀,但扇贝类肌联蛋白和纤维型肌动蛋白产生共沉淀,类肌联蛋白可能是存在于软体动物横纹肌中的一种新型的肌联蛋白样蛋白. 展开更多
关键词 软体动物 扇贝 肌联蛋白样蛋白 蛋白提取 蛋白纯化 蛋白相互作用
在线阅读 下载PDF
Marine Species Introduced on the French Channel-Atlantic Coasts: A Review of Main Biological Invasions and Impacts 预览
8
作者 Valérie Stiger-Pouvreau Gérard Thouzeau 《生态学期刊(英文)》 2015年第5期227-257,共31页
The impacts of anthropogenisation modify permanently the distribution patterns of brackish and marine species. Globalization leads to a rapid increase of the numbers of introduced species anywhere in the world. Biolog... The impacts of anthropogenisation modify permanently the distribution patterns of brackish and marine species. Globalization leads to a rapid increase of the numbers of introduced species anywhere in the world. Biological invasions often result in significant losses in the economic value, biological diversity and function of invaded ecosystems. This review presents the main pathways of introduction of non-indigenous species and the main benthic taxonomic groups being established and/or invasive along the French Channel-Atlantic coasts. A focus is put on main invasive marine species in the intertidal and subtidal zones of Brittany (France), among macroalgae (Sargassum muticum, Grateloupia turuturu, Undaria pinnatifida, Codium fragile and Gracilaria vermiculophylla), halophytes (Spartina alterniflora) and benthic invertebrates (Mollusks: Crepidula fornicata, Crassostrea gigas and Venerupis philippinarum). The species biology, introduction vectors, reproductive and dispersal capacities are considered, together with proliferation patterns along the Channel-Atlantic coasts. The ecological impacts of these species on the environment are also described, as well as the European regulations existing to limit alien species introduction and some examples of struggle against the invaders including eradication trials and biomass valorization. Last, the on-going impacts of global changes on alien species invasiveness along the Channel-Atlantic coasts are discussed. 展开更多
关键词 Invasive SPECIES FRENCH Channel-Atlantic Coasts HALOPHYTE MACROALGAE Mollusks IMPACTS Remediation
在线阅读 免费下载
湛江红树林保护区软体动物群落结构与生态位分析 预览 被引量:1
9
作者 唐以杰 陈康 刘金苓 《广东第二师范学院学报》 2015年第3期65-70,共6页
对广东湛江红树林保护区高桥核心区软体动物进行采样调查,共采集软体动物20种,隶属1门2纲13科.其中桐花树+红海榄(Acgiceras corniculatum+Rhizophora stylosa)群落10种,桐花树+秋茄(Acgiceras corniculatum+Kandelia cande... 对广东湛江红树林保护区高桥核心区软体动物进行采样调查,共采集软体动物20种,隶属1门2纲13科.其中桐花树+红海榄(Acgiceras corniculatum+Rhizophora stylosa)群落10种,桐花树+秋茄(Acgiceras corniculatum+Kandelia candel)群落6种,桐花树+白骨壤(Acgiceras corniculatum+Avicennia marina)群落13种,白骨壤+桐花树群落(Avicenniamarina+Acgicerascorniculatum)16种.对软体动物密度数据进行季节和红树植物群落类型进行无重复双因素方差分析,结果显示软体动物栖息密度主要受红树植物群落类型而不是季节的影响.对定量取样中获得的20个物种以Shannon—Wiener指数为基础进行了生态位宽度测定,以Pianka重叠指数为基础进行了生态位重叠值分析,结果表明琵琶拟沼螺(Assiminea lutea)、黑口滨螺(Littoraria melanostoma)和粗糙滨螺(Littorina scaber)的生态位较宽,均为2.0以上,它们之间的生态重叠值也较高,均为0.70以上.以密度数据4次开方为基础,利用欧氏距离进行群落物种的系统聚类分析,结果表明物种的聚类可以反映群落中物种生态位重叠值,但是生态位宽度的研究,要针对不同物种来分析.非度量多维标度排序分析也支持以上结果.研究表明,物种生态宽度、物种之间的生态位重叠值与物种的分布与数量密切相关,反映了软体动物群落中各物种对生境资源利用能力的强弱. 展开更多
关键词 软体动物 红树林 生态位宽度 生态位重叠值
在线阅读 下载PDF
Mollusks of the Rocky Intertidal Zone at Three Sites in Oaxaca, Mexico 预览
10
作者 Pedro Flores-Rodríguez Rafael Flores-Garza +3 位作者 Sergio García-Ibá?ez Carmina Torreblanca-Ramírez Lizeth Galeana-Rebolledo Enedina Santiago-Cortes 《海洋科学期刊(英文)》 2014年第4期326-337,共12页
The community of mollusks at three rocky intertidal zone in Oaxaca, Mexico was analyzed. Two samplings per site were conducted. At each sampling the inspected area was 10 m2. The sampling unit was 1 m2. 5862 specimens... The community of mollusks at three rocky intertidal zone in Oaxaca, Mexico was analyzed. Two samplings per site were conducted. At each sampling the inspected area was 10 m2. The sampling unit was 1 m2. 5862 specimens were examined. 68 mollusks species were identified. The families better represented in species richness were: FISSURELLIDAE, MURICIDAE, LOTIIDAE, MYTILIDAE, CHAMIDAE, ISCHNOCHITONIDAE y CHITONIDAE. The species that had the greatest density were Lottia discors, Siphonaria palmata, Lottia acutapex, Chormoytilus palliopunctatus, Brachidontes adamsianus, Chton articulatus e Ischnochiton muscarius. The species with the widest distribution represent 11.76%. With irregular distribution was found in 58.82% of the species. The gastropod Crucibulummonticulus, the bivalve C. palliopunctatus and the polyplacophoran C. articulatus had the greatest size. The value of diversity index was H’ = 4.29 bits/ind. and J’ = 0.72. The mollusks community in the rocky intertidal zone study sites is characterized by small size, because they rarely exceed seventy millimeters. The values of H’ and J’ indicate that the mollusk community in the study area has a high diversity and high uniformity, corresponding to mature and stable communities in a tropical region. 展开更多
关键词 INTERTIDAL ZONE OAXACA BIODIVERSITY Mollusks
在线阅读 免费下载
Method of Biogeochemical Diagnostics of Heavy Metals Accumulation in Mollusks (Unionidae) and Estimation of Their Ecological Condition (The Case of the Amur River, Russia) 预览
11
作者 Olga Klishko 《环境科学与工程:A》 2013年第2期111-126,共16页
关键词 生物地球化学 软体动物 阿穆尔河 重金属 俄罗斯 生态条件 估计 诊断方法
在线阅读 下载PDF
Ecological Groups and Fauna of the Two Sub Species Mollusks in the Bank of Amu Darya 预览
12
作者 Khusniddin Toshboltaevich Boymurodov 《环境科学与工程:A》 2013年第11期692-696,共5页
关键词 软体动物 阿姆河 银行 动植物 生态 亚种
在线阅读 下载PDF
Detection of Relation between V and Zn in Two Species of Mollusks and the Surrounding Water in the Marshes of Southern Iraq 预览
13
作者 Abdal-Kader Saeed Reyam Naji Ajmi Huda Farooq Zeki 《环境科学与工程:A》 2013年第12期753-758,共6页
关键词 水生环境 软体动物 伊拉克 ZN 沼泽 两种群 元素含量 浓度水平
在线阅读 下载PDF
我国口岸截获的软体动物及其检疫防控对策 预览
14
作者 周焯辉 李凯兵 +6 位作者 李海林 谈珺 李伟文 王祥 刘海军 戴舒灵 胡学难 《广东农业科学》 CSCD 北大核心 2013年第16期78-80,90共4页
对2011年全国口岸截获的软体动物进行了统计分析,全国口岸共截获软体动物10种,316批次,主要包括非洲大蜗牛(Achatina fulica Bowdich)、同型巴蜗牛(Bradybaena similaris Ferussac)、散大蜗牛(Helix aspersa Müller)、攻击... 对2011年全国口岸截获的软体动物进行了统计分析,全国口岸共截获软体动物10种,316批次,主要包括非洲大蜗牛(Achatina fulica Bowdich)、同型巴蜗牛(Bradybaena similaris Ferussac)、散大蜗牛(Helix aspersa Müller)、攻击茶蜗牛(Thebaimpugnata Mousson)、中国琥珀螺(Succinea chinensis Pfeiffer)、野蛞蝓(Agriolimax agrestis L.)6种有害生物,还有4种未鉴定到种,只鉴定到腹足纲、巴蜗牛科等,其中非洲大蜗牛、散大蜗牛是检疫性软体动物,需加强检疫,以防止其传播扩散。 展开更多
关键词 进境 软体动物 检疫 疫情 风险分析
在线阅读 下载PDF
Changes in Mangrove Epifaunal Assemblages Caused by Forest Logging during Hunting of the Neotropical Cormorant (<i>Phalacrocorax brasilianus</i>) on the Colombian Pacific Coast 预览
15
作者 Carlos Andrés Satizabal R. Jaime Ricardo Cantera Kintz Paula Cristina Sierra-Correa 《海洋科学期刊(英文)》 2012年第4期150-156,共7页
Although the importance of mangroves is clearly recognized around the world, these ecosystems are being strongly altered by the logging of their forests for multiple purposes. The Colombian Pacific coast is not an exc... Although the importance of mangroves is clearly recognized around the world, these ecosystems are being strongly altered by the logging of their forests for multiple purposes. The Colombian Pacific coast is not an exception to this situation, and apart from the traditional logging of wood, the hunting of the Neotropical Cormorant or Pato-cuervo (Phalacrocorax brasilianus), an activity largely unknown but widespread in the region, is also causing the logging of great extensions of mangroves. The aim of this research was to determine if the assemblages of mollusks and crustaceans of these mangroves are being affected by the hunting of the cormorant. To answer this question, quantitative samplings were realized in four transects in logged and unlogged mangrove areas on the southwestern coast of the Colombian Pacific and diversity, equitability and dominance of macrofaunal assemblages of mangroves were calculated. The data show that although significant differences between diversity indices were not found, there were important differences in equitability (total J’: 0.55 in T1, 0.77 in T2, 0.46 in T3 and 0.65 in T4), specific dominance, and composition of species (T1: 11 species, T2: 13, T3: 9 and T4: 11) between logged and unlogged areas. Based on these results, although forest structure and interstitial salinity were different among transects, we conclude that the present practice of exploitation of the Neotropical Cormorant is affecting the epifaunal populations of mangroves, causing changes in the composition and dominance of species. 展开更多
关键词 MANGROVE Mollusks Crustaceans NEOTROPICAL CORMORANT Colombian Pacific
在线阅读 免费下载
Commercially Important Marine Mollusks for Human Consumption in Acapulco, México 预览
16
作者 Rafael Flores-Garza Sergio García-Ibá?ez +5 位作者 Pedro Flores-Rodríguez Carmina Torreblanca-Ramírez Lizeth Galeana-Rebolledo Arcadio Valdés-González Arquímedes Suástegui-Zárate Juan Violante-González 《自然资源(英文)》 2012年第1期11-17,共7页
Acapulco, offers for international tourism a variety of mollusks that are delightful to the palate and a source of economic revenue for its residents;however there are no studies on the species consumed. Furthermore, ... Acapulco, offers for international tourism a variety of mollusks that are delightful to the palate and a source of economic revenue for its residents;however there are no studies on the species consumed. Furthermore, data from the State agencies responsible for registration of these products are unclear. This work is aimed to develop an inventory of Gastropoda, Bivalvia and Polyplacophora marketed as food, to gain knowledge on the species native to Acapulco and the introduced ones. The places that sell shellfish were interviewed from 2008 to 2011 in order to determine the geographical origin of their products being offered. We identified 42 species: 15 species of gastropods are captured locally and three are introduced. On Bivalvia, seven species are caught locally and 16 are introduced. There are Bivalvia species caught locally;however, their capture is now unaffordable. It is likely that this situation is due to overfishing and/or the transmission of diseases or parasites caused by the introduction of foreign living organisms to Acapulco. Within the list of species caught locally, there are some listed as of subject protection;all of these organisms are exploited in Acapulco without control. The wealth of marine mollusks for human consumption in Acapulco is very high. The capture does not satisfy local market demand and the amount of introduced species is very high. It is necessary to make a diagnostic analysis of mollusk fishing industry in the state of Guerrero, also implement a management program, including the sanitary measures and control of introduced species, as they arrive alive and stay alive in the waters of Acapulco. A significant number of native species that have aquaculture potential should be studied for commercial culture practice as well as to conduct studies on their biology on those species that are considered over-exploited and allow recovery of the species in its habitat. 展开更多
关键词 Mollusks COMMERCIAL CONSUMPTION HUMAN Acapulco México
在线阅读 免费下载
Mollusk Species Richness on the Rocky Shores of the State of Guerrero, Mexico, as Affected by Rains and Their Geographical Distribution 预览
17
作者 Flores-Rodríguez Pedro Flores-Garza Rafael +5 位作者 García-Ibánez Sergio Valdés-González Arcadio Violante-González Juan Santiago Cortés Enedina Galeana-Rebolledo Lizeth Torreblanca-Ramírez Carmina 《自然资源(英文)》 2012年第4期248-260,共13页
Natural processes in ecosystems shows significant variations in species richness with regular cycles that can be altered by natural or anthropogenic activities;the present research was in order to understand on some o... Natural processes in ecosystems shows significant variations in species richness with regular cycles that can be altered by natural or anthropogenic activities;the present research was in order to understand on some of these variations. The objectives were: 1) determine the species richness of rocky intertidal mollusks;2) track their geographical distribution at State level;and 3) determine the changes in species richness as a result of rainfall on an annual cycle. For these purposes it was sampled in March, June, September and December 2005, the sampled area was 20 m2for each collecting site;the sampling unit was a PVC rectangle frame one by two meter per side. The mollusks found within the sampling units were collected, identified and counted. The species distribution was analyzed by sites and regions, considered species richness per season, and the distributional patterns by rainy season historical records. A total of 62 mollusks species were found, its richness associated with substrate stability and wave intensity on each site, Gastropods had the highest species richness. When analyzing the regional distribution and sites, it was found a pattern of species richness roughly constant in the proportion of species with wide distribution (generalists) versus those of restricted spatial representation (specialists). Gastropods had the highest number of species with restricted spatial representation. Seasonal rainfall differences did not quantitatively altered on the overall the species of mollusks in the rocky intertidal sampled zone however, in the analysis per Class, Gastropoda indicated changes in species richness influenced by rainfall, which were not observed in Bivalvia and Polyplacophora, suggesting that those changes might depend on adaptive processes or the lack of adaptation of gastropod species to the characteristics of the rocky intertidal habitat. 展开更多
关键词 Rocky SHORE Species Richness GEOGRAPHIC Distribution RAIN Effects Mollusks
在线阅读 免费下载
耳螺的研究现状与展望
18
作者 刘毅 王瑁 +2 位作者 王文卿 刘艳军 卢昌义 《动物学杂志》 CAS CSCD 北大核心 2012年第1期 124-132,共9页
耳螺(Ellobiid)是一类特殊的原始有肺类软体动物,大多嗜盐,主要分布于海陆过渡区的高潮带和潮上带。耳螺在软体动物进化史上具有特殊地位,并且因其对环境变迁和人为干扰十分敏感,可作为环境评估的重要指标种。过去2个多世纪,众多学者... 耳螺(Ellobiid)是一类特殊的原始有肺类软体动物,大多嗜盐,主要分布于海陆过渡区的高潮带和潮上带。耳螺在软体动物进化史上具有特殊地位,并且因其对环境变迁和人为干扰十分敏感,可作为环境评估的重要指标种。过去2个多世纪,众多学者已经对耳螺的形态学、解剖学、分类学和生态学等开展了系统的研究。本文概述了耳螺研究的3个阶段:起步阶段(18世纪末至20世纪30年代初)、发展阶段(20世纪30年代初至70年代末)和成熟阶段(20世纪80年代至今),最后总结了耳螺研究中存在的不足,并对未来研究方向进行展望。 展开更多
关键词 耳螺 软体动物 进化 研究进展
Bioactive natural products from Chinese marine flora and fauna
19
作者 Zhen-fang ZHOU Yue-wei GUO 《中国药理学报:英文版》 SCIE CAS CSCD 2012年第9期1159-1169,共11页
在最近的十年,海洋的自然产品的药品的申请潜力从两个自然产品化学家和药物学家吸引了许多兴趣。我们的组长从中国海洋的植物群为 bioactive 天赋产品从事了搜索(例如红树属植物和水藻)并且动物志(包括的海绵,软珊瑚,和软体动物),... 在最近的十年,海洋的自然产品的药品的申请潜力从两个自然产品化学家和药物学家吸引了许多兴趣。我们的组长从中国海洋的植物群为 bioactive 天赋产品从事了搜索(例如红树属植物和水藻)并且动物志(包括的海绵,软珊瑚,和软体动物),导致跨越大量结构的班和各种各样的 biosynthetic 起源的众多的新奇第二等的代谢物的隔离和描述。特别兴趣中是许多这些混合物看有希望的生物活动的事实,包括细胞毒素,抗菌剂,和酶禁止的效果。由描述代表性的研究,这评论关于我们的组在过去的十年做的成就和进步介绍一篇全面摘要。几个有趣的例子详细被讨论。 展开更多
关键词 海洋天然产物 生物活性 中国海洋 动植物 次生代谢产物 天然产品 药物应用 动物区系
湛江硇洲岛海域19种贝类食用部位的重金属含量及评价 预览 被引量:17
20
作者 陈清香 杨文 初庆柱 《生态环境学报》 CSCD 北大核心 2011年第1期 175-180,共6页
测定了湛江硇洲岛海域产的17种腹足类足部肌肉和2种双壳类软体部的Cr、Cu、Zn、Ni、As、Cd、Pd和Hg等8种重金属质量分数。通过对比金属污染指数,发现桶形芋螺Conus betulinus、粗糙滨螺Littorinopsis scabra、鳞片扭蚶Trisidos kiyonoi... 测定了湛江硇洲岛海域产的17种腹足类足部肌肉和2种双壳类软体部的Cr、Cu、Zn、Ni、As、Cd、Pd和Hg等8种重金属质量分数。通过对比金属污染指数,发现桶形芋螺Conus betulinus、粗糙滨螺Littorinopsis scabra、鳞片扭蚶Trisidos kiyonoi、可变荔枝螺Thais mutabilis和小结节滨螺Nodilittorina exigua受到的污染较严重;以单因子污染指数为标准,无Cu、Zn和Ni污染,Pd和Hg仅少数种轻微污染,Cr污染较严重,Cd和As污染非常严重;以重金属绝对质量分数来衡量,含As、Cr和Cd最高的贝分别是黑凹螺Chlorostoma nigerrina、粒花冠小月螺Lunella corontat和习见赤蛙螺Bursa rana。 展开更多
关键词 贝类 食用部位 重金属 硇洲岛 物柴油木
在线阅读 免费下载
上一页 1 2 10 下一页 到第
使用帮助 返回顶部 意见反馈