Marine Managed Areas Workshop report, Penang, Malaysia, 18-19 January, 2011

Establishment of a working group of regional experts in Marine Protected Areas (MPAs); inventory and status of existing MPAs; gap analysis;establishment of common data requirements and protocols;development of a regional action plan;training and capacity building; outreach activities; proposal f0r management of existing and creation of new MPAs.

Report of the Bangladesh Hilsa Working Group Meeting, Dhaka, Bangladesh, 19 May, 2011

Stock assessment and status of hilsa assessment in Bangladesh. Stock assessment needs and workplan. Identification of future assessment approaches and data needs. Stock status advice for hilsa in India.

Report of the Fisheries Statistics Working Group Meeting, Medan, Indonesia, 19-20 March, 2012

Statistics and data overviews from the eight member countries. Southeast Asian Fisheries Development Center(SEAFDEC)overview and activities since 2010. Statistics working group recommendations and workplan

Report on BOBLME Indian mackerel genetic data analysis including final workshop, Phuket, Thailand, 17-19 February 2015

This workshop followed on from two previous workshops held in Colombo, Sri Lanka, 2012 and Kochi, India in 2013. The 14 microsattellite markers had previously been developed for Indian Mackerel (Rastrelliger kanagurta) were used on 31 tissue collections from all eight countries were genotyped in India.

西双版纳部分地区鸟类多样性初步考察

1992年12月,1993年11月及1994年4-5月,对西双版纳自然保护区内外的数个工作点进行了鸟类物种多样性的调查,共记录鸟类190种。分析表明雀形目鸟类物种多样性状态尚佳,而非雀形目鸟类类群(科种)多样性及物种多样性状态均有恶化趋势。保护区内鸟类物种多样性状态明显较好。傣族墓葬地之龙山因依傍村落、农田及其地多种生境而具有相当丰富的鸟类物种多样性,是保护鸟类物种多样性不可忽视的一个方面。

水生大型无脊椎动物的能量密度

测定了 72种大型水生无脊椎动物的能量密度 ,其中 6 9种是第一次测定 .底栖动物的能量密度随物种、季节、地区、年龄等的不同而存在差异 .绝大多数寡毛类的能量密度为 2 2 .99- 2 5 .0 8kJ/g(干重 ) ,软体动物的能量密度为 16 .72 - 2 2 .99kJ/g(干重 ) ,昆虫及其幼虫的能量密度变异较大 ,为 10 .4 5 - 2 5 .0 8kJ/g(干重 )左右 .

河南曹岗湖浮游动物野外现场试验初报

河南曹岗湖浮游动物野外现场试验初报蔡庆华，伍焯田，黎道丰，梁彦龄（中国科学院水生生物研究所，武汉４３００７２）关键词浮游动物，野外现场试验，湖泊生态系统，黄淮海平原ＰＲＩＬＩＭＩＮＡＲＹＲＥＰＯＲＴＯＮＩＮＳＩＴＵＥＸＰＥＲＩＭＥＮＴＯＦＺＯＯＰＬＡ...

Award Winner in the Young Investigator Category, 2014 Society for Biomaterials Annual Meeting and Exposition, Denver, Colorado, April 16-19, 2014: Periodically perforated core-shell collagen biomaterials balance cell infiltration, bioactivity, and mechanical properties.

Orthopedic tissue engineering requires biomaterials with robust mechanics as well as adequate porosity and permeability to support cell motility, proliferation, and new extracellular matrix (ECM) synthesis. While collagen-glycosaminoglycan (CG) scaffolds have been developed for a range of tissue engineering applications, they exhibit poor mechanical properties. Building on previous work in our lab that described composite CG biomaterials containing a porous scaffold core and nonporous CG membrane shell inspired by mechanically efficient core-shell composites in nature, this study explores an approach to improve cellular infiltration and metabolic health within these core-shell composites. We use indentation analyses to demonstrate that CG membranes, while less permeable than porous CG scaffolds, show similar permeability to dense materials such as small intestine submucosa (SIS). We also describe a simple method to fabricate CG membranes with organized arrays of microscale perforations. We demonstrate that perforated membranes support improved tenocyte migration into CG scaffolds, and that migration is enhanced by platelet-derived growth factor BB-mediated chemotaxis. CG core-shell composites fabricated with perforated membranes display scaffold-membrane integration with significantly improved tensile properties compared to scaffolds without membrane shells. Finally, we show that perforated membrane-scaffold composites support sustained tenocyte metabolic activity as well as improved cell infiltration and reduced expression of hypoxia-inducible factor 1α compared to composites with nonperforated membranes. These results will guide the design of improved biomaterials for tendon repair that are mechanically competent while also supporting infiltration of exogenous cells and other extrinsic mediators of wound healing.

Mode multiplexing at 2×20Gbps over 19-cell hollow-core photonic band gap fibre

This paper demonstrates the first mode-multiplexed system over 19-cell hollow-core photonic band gap fibre, at 2×20Gbps using the LP0,1 and LP2,1-like modes. © 2012 OSA.

Mode multiplexing at 2×20Gbps over 19-cell hollow-core photonic band gap fibre

This paper demonstrates the first mode-multiplexed system over 19-cell hollow-core photonic band gap fibre, at 2×20Gbps using the LP0,1 and LP2,1-like modes. © 2012 OSA.

Experimental study of trophic cascade effect of silver carp (Hypophthalmichthys molitrixon) in a subtropical lake, Lake Donghu: on plankton community and underlying mechanisms of changes of crustacean community

An enclosure experiment was carried out to test trophic cascade effect of filter-feeding fish on the ecosystem: growth of crustacean zooplankton, and possible mechanism of changes of crustacean community structure. Four fish biomass levels were set as follows: 0, 116, 176 and 316 g m(-2), and lake water ( containing ca. 190 g m(-2) of filter-feeding fishes) was comparatively monitored. Nutrient levels were high in all treatments during the experiment. Lowest algal biomass were measured in fishless treatment. Algal biomass decreased during days 21-56 as a function of fish biomass in treatments of low (LF), medium (MF) and high (HF) fish biomass. Crustaceans biomass decreased with increasing fish biomass. Small-bodied cladocerans, Moina micrura, Diaphanosoma brachyurum and Scapholeberis kingii survived when fish biomass was high whilst, large-bodied cladocerans Daphnia spp. and the cyclopoids Theromcyclops taihokuensis, T. brevifuratus, Mescyclops notius and Cyclops vicinus were abundant only in NF enclosures. Evasive calanoid Sinodiaptomus sarsi was significantly enhanced in LF, but decreased significantly with further increase of fish biomass. Demographic data indicated that M. micrura was well developed in all treatments. Our study indicates that algal biomass might be controlled by silver carp biomass in eutrophic environment. Changes of crustacean community are probably affected by the age of the first generation of species. Species with short generation time were dominant and species with long generation time survived less with high fish biomass. Evasive calanoids hardly developed in treatments with high fish biomass because of the ( bottle neck) effect of nauplii. Species abundance were positively related to fish predation avoidance. Other than direct predation, zooplankton might also be suppressed by filter-feeding fish via competition.

Purification and characterization of White Spot Syndrome Virus (WSSV) produced in an alternate host: crayfish, Cambarus clarkii

Penaeid shrimp is the natural host of White Spot Syndrome Virus (WSSV) that can cause high mortality in the infected hosts. Attempts to obtain sufficient amounts of purified intact WSSV for characterization have been unsuccessful. Using crayfish, Cambarus clarkii as a proliferation system, a large amount of infectious WSSV was reproduced and intact WSSV viral particles were purified with a new isolation medium by ultra-centrifugation. Purified WSSV particles were very sensitive to organic solvents and the detergent, Triton X-100. The size of the rod-shape, somewhat elliptical, intact WSSV was 110-130 x 260-350 mm with a long, tail-like envelope extension. The naked viral nucleocapsid was about 80 x 350 nm, and it possessed 15 spiral and cylindrical helices composed of 14 globular capsomers along its long axis, and a 'ring' structure at one terminus. Distinct WSSV genome DNA patterns were obtained when the purified genomic dsDNA of WSSV was digested with five different restriction enzymes (HindIII, XhoI, B(BamHI, SalI, and SacI). In addition, at least 13 major and distinct protein bands could be observed when purified intact WSSV viruses were separated by SDS-PAGE followed by Coomassie Brilliant R-250 staining. The estimated molecular weights of these proteins were 190, 84, 75, 69, 68, 58, 52, 44, 28, 27.5, 23, 19, and 16 kD, respectively. Both the 44 and 190 kD proteins were easily removed if the hemolymph from the: WSSV infected crayfish was transiently treated with 1%, Triton X-100 before it was subjected to gradient centrifugation, indicating that both of them are located on the surface of the viral envelope. These characteristics are consistent with WSSV isolated from the penaeid shrimp. (C) 2001 Elsevier Science B.V. All rights reserved.

A narrow photoluminescence linewidth of 19.2 meV at 1.35 mu m from In0.5Ga0.5As/GaAs quantum island structure grown by molecular beam epitaxy

A self-organized In0.5Ga0.5As/GaAs quantum island structure emitting at 1.35 mum at room temperature has been successfully fabricated by molecular beam epitaxy via cycled (InAs)(1)/GaAs)(1)monolayer deposition method. The photoluminescence measurement shows that a very narrow linewidth of 19.2 meV at 300 K has been reached for the first time, indicating effective suppression of inhomogeneous broadening of optical emission from the In0.5Ga0.5As island structure due to indium segregation reduction by introducing an AlAs layer and the strain reduction by inserting an In0.2Ga0.8As layer overgrown on the top of islands. The mound-like morphology of the islands elongated along the [1 (1) over bar0] azimuth are observed by the atomic force microscopy measurement, which reveals the fact that strain in the islands is partially relaxed along the [1 (1) over bar0] direction. Our results present important information for the fabrication of 1.3 mum wavelength quantum dot devices.

黄土丘陵区沟谷地植被恢复群落特征研究

对黄土丘陵区2个不同沟向沟谷地植被群落特征进行样方调查,统计分析沟谷地植物物种频度和植物种群相似系数。调查共记录植物81种,隶属31个科,菊科、禾本科和豆科物种分别占物种总数的19.75%、16.05%和14.81%;封禁20年左右的沟谷地植被演替表现出良性演替的趋势;目前该沟谷地植物群落生活型中草本植物仍占主导地位,尤其是多年生草本,而灌乔生活型植物也已占有重要地位。灌乔木树种对植物群落多样性和结构等方面具有重要影响,沟谷地植被分布的斑块格局较为突出,不同沟向沟谷地的灌乔植物种的重要值构成格局存在一定差异,南北沟向较西东沟向分配均匀;沟向不同,沟谷地所形成的植被种群相似性具有一定差异,主要是由于受到一些伴生种和罕见种的影响。此研究对掌握该地形植被演替方向,明确植被恢复任务和目标具有一定意义。