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| 1 | Prey preference of the common long-armed octopus Octopus minor(Cephalopoda: Octopodidae) on three different species of bivalves显示文摘Octopus minor is widely distributed along the northern coast of China. To date, there is little information on the prey selection process of this species. To understand this process, several experiments were carried out. Three types of bivalves, namely, Ruditapes philippinarum , Mactra chinensis , and Mytilus galloprovincialis , were used to observe the prey selection of O . minor and to analyze the potential causes of prey selection from three aspects: prey profi tability, adductor muscle tension and handling time. Under single-prey conditions, we found that the average (±SD) predation rates of O . minor on R . philippinarum , M . chinensis , and M . galloprovincialis were 1.73±0.50, 1.27±0.42, and 0.8±0.2/d, respectively. Under diff erent prey combinations, octopods actively selected one type of prey over the other(s), and the order of prey preference was R . philippinarum , followed by M . chinensis and lastly M. galloprovincialis . Furthermore, the shells of the consumed prey showed that O . minor only consumed bivalves by pulling them apart since there was no evidence of drill holes on the shells. The prey selection of O . minor was related to the prey profi tability and handling time;O . minor appeared to select preys with a higher profi tability and a shorter handling time. However, the diffi culty in opening the bivalve was not consistent with the prey preference of the octopods. These results suggest that O . minor prefers to consume R . philippinarum possibly due to a high profi tability and a short handling time that supports the optimum Foraging Theory. | SONG Minpeng WANG Jinhai ZHENG Xiaodong | 2019 | Journal of Oceanology and Limnology2019，37，5： | 4 |
| 2 | INITIATION OF SHELL MOTION ON SAND BEDS: AN EXPERIMENTAL STUDY显示文摘Experimental study on initiation of bivalve shell motion on a horizontal sand bed, under a unidirectional flow of water, is presented. Experiments were carried out in a flume with three types of bivalve shells, namely Coquina Clam, Cross-barred Chione and Ponderous Ark, to test the condition for initiation of motion. The shape parameters of bivalve shells are defined appropriately. Experiments were conducted in a flume with a horizontal bed, and the critical shear stresses were estimated using Vanoni’s side-wall correction. The characteristic parameters affecting the initiation of shell motion on a horizontal bed in rough-turbulent regime identified based on the physical reasoning and dimensional analysis are the Shields parameter (nondimensional critical shear stress), nondimensional competent mean velocity, nondimensional sand roughness, nondimensional flow depth and shape parameter. Equations of Shields parameter and nondimensional competent mean velocity for the initial movement of shells on a horizontal sand bed with convex upward and downward conditions are obtained using experimental data. | Subhasish DEY Alok KUMAR | 2002 | International Journal of Sediment Research2002，17，4： | 1 |
| 3 | Identification of Monitoring Organ in Bivalves for Early Warning of Paralytic Shellfish Toxins Accumulation显示文摘Bivalve farming plays a dominant role in mariculture in China.Paralytic shellfish toxins(PSTs)can be accumulated in bivalves and cause poisoning the consumers.A sensitive detection of PSTs can provide early warning to decrease poisoning events in bivalve consuming.PSTs are traditionally examined using the whole soft-tissues.However,PSTs accumulation varies dramatically in different tissues of bivalves.Some tough tissues/organs(such as mantle),which account for a large proportion of the total soft body,exhibit a lower accumulation of PSTs and make the toxin extraction time-and reagent-consuming,potentially decreasing the accuracy and sensitivity of PSTs monitoring in bivalves.To develop a sensitive and cost-effective approach for PSTs examination in massively farmed bivalves,we fed three commercially important bivalves,Yesso scallop Patinopecten yessoensis,Pacific oyster Crassostrea gigas,and blue mussel Mytilus edulis with PSTs-producing dinoflagellate Alexandrium catenella,and detected PSTs concentration in different tissues.For all three bivalve species,the digestive gland accumulated much more PSTs than other tissues,and the digestive gland’s toxicity was significantly correlated with the PSTs toxicity of the whole soft-tissues,with r^(2)=0.94,0.92,and 0.94 for Yesso scallop,Pacific oyster,and blue mussel,respectively.When the toxicity of the whole soft-tissues reached 80μgSTXeq(100g)^(−1),the regulatory limit for commercial shellfish,the digestive gland’s toxicity reached 571.48,498.90,and 859.20μgSTXeq(100g)^(−1) in Yesso scallop,Pacific oyster,and blue mussel,respectively.Our results indicate that digestive gland can be used for the sensitive and cost-effective monitoring of PSTs in bivalves. | MENG Deting SHI Jiaoxia LI Moli WEI Zhongcheng WANG Yangrui XU Yiqiang LI Yubo BAO Zhenmin HU Xiaoli | 2023 | Journal of Ocean University of China2023，22，1： | 0 |
| 4 | The Allocation of Some Pelagic Larvae of Bivalve Mollusks in the Western Part of Chukchi Sea显示文摘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. | Delik Dokkovich Gabaev | 2019 | Journal of Environmental Science and Engineering(A)2019，8，2： | 0 |
| 5 | 泰国近岸古环境Toarcian-Aalenian期风暴沉积初探(英文)显示文摘Jurassic deposits of the Malayan Peninsula (Thailand) are stratigraphically limited to Toarcian and Aalenian only(Meesook & Sha,2010,and literature cited therein).These are represented by wide spectrum of both clastic and carbonate rocks with full development | Assanee MEESOOK Michal KROBICKI | 2012 | 地球学报2012，33，S1： | 0 |
| 6 | 白垩纪-古近纪古生物地理区的变化与印度和亚洲的碰撞(英文)显示文摘Geologic studies of the Late Cretaceous-Paleogene stratigraphic record of southern Tibet reveal distinct episodes of collision and post-collisional compression.The composition of sediments exposed along the Indus-Yarlung Zangbo suture,tectonic deformation, | WAN Xiao-qiao,LI Guo-biao,JIANG Tian State Key Laboratory of Biogeology and Environmental Geology,China University of Geosciences,Beijing 100083,China | 2012 | 地球学报2012，33，S1： | 0 |
| 7 | Comparative Genomics Reveals Evolutionary Drivers of Sessile Life and Left-right Shell Asymmetry in Bivalves显示文摘Bivalves are species-rich mollusks with prominent protective roles in coastal ecosystems.Across these ancient lineages,colony-founding larvae anchor themselves either by byssus production or by cemented attachment.The latter mode of sessile life is strongly molded by left-right shell asymmetry during larval development of Ostreoida oysters such as Crassostrea hongkongensis.Here,we sequenced the genome of C.hongkongensis in high resolution and compared it to reference bivalve genomes to unveil genomic determinants driving cemented attachment and shell asymmetry.Importantly,loss of the homeobox gene Antennapedia(Antp)and broad expansion of lineagespecific extracellular gene families are implicated in a shift from byssal to cemented attachment in bivalves.Comparative transcriptomic analysis shows a conspicuous divergence between leftright asymmetrical C.hongkongensis and symmetrical Pinctada fucata in their expression profiles.Especially,a couple of orthologous transcription factor genes and lineage-specific shell-related gene families including that encoding tyrosinases are elevated,and may cooperatively govern asymmetrical shell formation in Ostreoida oysters. | Yang Zhang Fan Mao Shu Xiao Haiyan Yu Zhiming Xiang Fei Xu Jun Li Lili Wang Yuanyan Xiong Mengqiu Chen Yongbo Bao Yuewen Deng Quan Huo Lvping Zhang Wenguang Liu Xuming Li Haitao Ma Yuehuan Zhang Xiyu Mu Min Liu Hongkun Zheng Nai-Kei Wong Ziniu Yu | 2022 | Genomics, Proteomics & Bioinformatics2022，20，6： | 0 |
| 8 | 县乡级医院医用诊断X线放射防护工作中存在的问题及对策显示文摘县乡级医院医用诊断X线放射防护工作中存在的问题及对策高振宏,赵国义,冯建臣(辽宁省凌源市卫生防疫站,122500)为了贯彻落实《放射性同位素与射线装置防护条例》(下简称《条例》)的精神,我们对有关单位的X线机的放射防护情况进行了检查,在检查中发现县乡... | 高振宏 赵国义 冯建臣 | 1994 | 中国卫生监督杂志1994，0，1： | 0 |
| 9 | 紫外分光光度法测定空气中2-羟基-4-正辛氧基二苯甲酮显示文摘紫外分光光度法测定空气中2-羟基-4-正辛氧基二苯甲酮刘玉莹天津市卫生防病中心(300011)2-羟基-4-正辛氧基二苯甲酮(UV-531)是紫外线吸收剂之一,为树脂、塑料、纤维、涂料等合成材料的光稳定剂,对人体消化道,肾脏及皮肤均有损害。但此毒物的... | 刘玉莹 | 1994 | 毒理学杂志1994，16，S1： | 0 |
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