Euthecosomatous gastropods (Mollusca: Heterobranchia) from Buton (SE Sulawesi,Indonesia), with notes on species from Viti Levu,Fiji; systematics,biostratigraphy     

Janssen  A.W. 《Geologie en Mijnbouw》1999,78(2):179-189

Geologie en Mijnbouw - Pteropoda (Mollusca, Gastropoda, Euthecosomata) described by Beets (1943, 1950, 1953) from the alleged Late Miocene/Early Pliocene asphaltic deposits of Buton (SE Sulawesi,...  相似文献   

香港红树林区软体动物生态研究   总被引：4，自引：0，他引：4  

蔡立哲  黄玉山  谭凤仪 《海洋科学集刊》1997,(39):103-114

1994年夏季(6月至9月)和冬季(1994年12月至1995年2月)对香港14片红树林的软体动物作了定性和定量调查。调査期间采到的软体动物已鉴定52种,其中腹足类45种,双壳类7种。采用 Bray-curtis 相似系数和逐步形成分类系统的方法进行聚类分析。基本上可分为4组断面,分别以粗束拟蟹守螺(Cerithidea djadjariensis )、奥莱彩螺(Clithon oualaniensis )、沟纹笋光螺(Terebralia sulcata )和红树拟蟹守螺(Cerithidea rhizophorarum)为第一密度优勢种。不同底质的红树林区软体动物组成有显著差异。污染可能是造成沙头角红树林区软体动物多样性低的重要环境因子。盐度和潮汐制约一些软体动物的垂直分布和水平分布,纵带滩栖螺(Batillaria zonalis )和多形滩栖螺(Batillaria multiformis )在红树林区海缘高密度栖息,分别高达120个/㎡和240个/㎡。在淡水注入的红树林区常有广盐性软体动物栖息,如中国绿螂(Glauconme chinensis)。  相似文献   

芋螺科系统分类学研究进展   总被引：1，自引：1，他引：0  

陈志云  连喜平  谭烨辉 《海洋科学》2019,43(3):90-97

芋螺科(Conidae)是一类多样性较高的暖水性海洋贝类,肉食性,体内有毒素可射杀猎物。芋螺毒素具有重要的研究价值和经济意义,因此该类动物备受关注。我国南海蕴藏着丰富的芋螺动物资源,芋螺资源的开发及相关研究需要分类学提供支撑。本文简述了芋螺科的系统分类研究历史,回顾了这一类群的国内外系统分类学研究进展,分析了中国海域芋螺科分类学目前存在的问题和不足。文终指出通过经典分类学和分子系统学研究的交叉综合,结合中国海域的研究材料,将会补充和完善国际上较新的芋螺科分类系统,缩小与国外同类研究间的差距。  相似文献   

南海双带蛤科(Mesodes matidae)一新种     

徐凤山  李笑红 《海洋与湖沼》2000,31(4):384-385

于１９５９年１２月１４日在南海进行的全国海洋综合调查时,采到了一个罕见的双壳类标本。最近经过鉴定,认为是一个新种,属于双带蛤科、糙双带蛤属,定名为中华糙双带蛤。模式标本保存于中国科学院海洋研究所。  相似文献   

Shallow‐water sand bars on the Ruamahanga River delta Lake Wairarapa     

R. A. Pickrill  J. Irwin 《新西兰海洋与淡水研究杂志》2013,47(2):109-119

In the shallow waters of Lake Wairarapa, a multiple series of sublimnic sand bars has developed around the outer edge of the Ruamahanga River delta. Shore‐normal movements in bar positions occur in response to changing lake level and wave conditions. Unlike many bar systems, most of these movements are lakeward of the breaker zone. Sediments on the bar crests are well‐sorted fine sands; the troughs are a mixture of fine sand and mud settling out of the turbid lake waters during calm conditions.  相似文献   

Descriptions of three new species of Mitridae （Mollusca： Gastropoda） from South China Sea     

李宝泉张素萍  李新正 《中国海洋湖沼学报》2005,23(1):121-125

Three new species of Family Mitridae （Mollusca： Gastropoda） from the South China Sea are described in the present paper. They are Ziba aglais sp. nov. B. LI ＆ S. ZHANG, Neocancilla daidaleosa sp.nov. B. LI ＆ X. LI, and Mitra holkosa sp. nov. B. LI. Their systematic positions are also discussed.  相似文献   

Holocene molluscan faunal history and environmental change at Kloster Mühle,Rheinland‐Pfalz,western Germany     

R. A. Meyrick 《第四纪科学杂志》2003,18(2):121-132

  相似文献   

Loggerhead sea turtles (Caretta caretta) as bioturbators in neritic habitats: an insight through the analysis of benthic molluscs in the diet     

Bojan Lazar  Romana Gračan  Jelena Katić  Dušan Zavodnik  Andrej Jaklin  Nikola Tvrtković 《Marine Ecology》2011,32(1):65-74

Molluscs are a diverse and ubiquitous group of organisms which contribute to the formation of biogenic sediments and are one of the major prey taxa for the neritic‐stage loggerhead sea turtles (Caretta caretta) worldwide. Here we investigated to what degree molluscs contribute to the diet of individual turtles, and what role the feeding strategy of loggerheads might play in bioturbation, one of the key processes in nutrient transport in marine ecosystems. We performed a detailed analysis of benthic molluscs from the digestive tracts of 62 loggerhead sea turtles (curved carapace length: 25.0–85.4 cm) found in the Northern Adriatic Sea. From 50 of the turtles that contained benthic molluscs, we identified 87 species representing 40 families and three classes (Gastropoda, Bivalvia and Scaphopoda), including 72 new dietary records for loggerhead turtle. Most of the identified molluscs were small‐sized species (shell length ≤ 3 cm) and were often found in a subfossil condition. Their intake may be considered a byproduct of infaunal mining, while larger molluscs were mainly found crushed into smaller fragments. Through such foraging behaviour loggerheads actively rework sediments, increase the surface area of shells and the rate of shells disintegration, acting as bioturbators in this system. We conservatively estimate that loggerheads in the neritic zone of the Adriatic Sea bioturbate about 33 tonnes of mollusc shells per year, and hypothesize about the possible effects of bioturbation reduction on environmental changes in the Northern Adriatic ecosystem.  相似文献   

A Late Pleistocene transgression in Thailand: A marine molluscan fauna from Ban Praksa (Samut Prakan Province)     

Mauro Pietro Negri 《Journal of Asian Earth Sciences》2012,43(1):145-149

A Late Pleistocene molluscan fauna sampled at Ban Praksa, near the Chao Phraya River mouth (Lower Central Plain of Bangkok, Thailand) is herein analyzed and paleoecologically characterized, revealing a shallow infralittoral, coarse/hard-bottomed environment. The comparison of the Ban Praksa association with several coeval ones recovered from Phra Pradaeng Formation seems to be evidence of a 10,000 year hiatus between two separate groups of marine faunas, possibly belonging to different interstadial transgressive peaks that occurred during the long-term sea-level regression following the Last Interglacial.  相似文献   

中国海帮斗蛤科一新种——中华帮斗蛤     

徐凤山 《海洋与湖沼》1992,23(3):285-287

在1985年进行长江口调查时,采到了数个双壳类标本,经鉴定认为系帮斗蛤科一新种——中华帮斗蛤Pandora(Frenamya)sinica sp. nov.。新种左壳前主齿和中主齿为一横向的隔板相连结。右壳中主齿发达,后主齿短小。模式标本保存于中国科学院海洋研究所内。  相似文献