The mating calls of six forms belonging to four genera Megophrys,Oreloalax,Scutiger and Leptolalax were recorded in Wawu Mountain National Forest Park,Sichuan Province of China,using cassette tape recorder (Aiwa) and ...The mating calls of six forms belonging to four genera Megophrys,Oreloalax,Scutiger and Leptolalax were recorded in Wawu Mountain National Forest Park,Sichuan Province of China,using cassette tape recorder (Aiwa) and Sony tape with an external microphone.All recordings were analyzed with an IBM PC based 'SIGNAL' software analysis system (Engineering Design,USA).The range of analyzed frequency was set as 0-10 kHz.Acoustic analysis shows that the dominant frequency of L.oshanensis,M.minor,M.sp.,S.(S.)chintingensis,O.omeimontis,and O.schmidti is 4521.9,3456.4,2293.8,1076.5,1071.0 and 1849.4 Hz on average respectively;the note duration is 46.2,90.8,99.6,72.2,78.8 and 110.3 millisecond on average respectively;the note interval is 140.4,253.0,681.4,1517.7,461.3 and 619.5 millisecond on average respectively.One-Way ANOVA analysis indicates that there are significant differences among the analyzed six forms on the dominant frequency,the note duration,and the note interval (P<0.01).Multiple comparisons using Least-Significant Difference (LSD) show that the difference of the dominant frequency between S.(S.) chintingensis and O.omeimontis is not significant (P=0.917>0.05);on the note duration,only L.oshanensis is significantly different from M.minor,M.sp.,O.omeimontis and O.schmidti (P<0.01);on the note interval,L.oshanensis is not significantly different from M.minor,the same with M.sp.versus O.schmidti and O.omeimontis versus O.schmidti (P>0.05).Correlation analysis indicates that there are no significant correlation among the three acoustic characters of dominant frequency,note duration and note interval,and two environmental factors of the elevation and air temperature (P>0.05) except that the note interval is significantly linear correlated with the elevation (r=0.943,P=0.005<0.01).In the light of above,it is suggested that acoustic characteristics of calls are useful in distinguishing forms;the change of the note interval with the elevation may be a kind of strategy of reproduction.展开更多
Four new record species of the cohort Uropodina from China are described and figured,they are Dinychus undulatus Sellnick,Dinychus septentrionalis(Trgrdh),Discourella baloghi Hirschmann et Nicol Z.and Discourella mode...Four new record species of the cohort Uropodina from China are described and figured,they are Dinychus undulatus Sellnick,Dinychus septentrionalis(Trgrdh),Discourella baloghi Hirschmann et Nicol Z.and Discourella modesta(Leonardi).All the specimens were collected from the Changbai Mountain,Jilin Province.All measurements are given in microns(μm).展开更多
The following five species of Chrysosoma are described as new to science: C. damingshanum sp. nov., C. digitatum sp. nov., C. longum sp. nov., C. tongbiguanum sp. nov., and C. zhoui sp. nov.. An updated key to the sp...The following five species of Chrysosoma are described as new to science: C. damingshanum sp. nov., C. digitatum sp. nov., C. longum sp. nov., C. tongbiguanum sp. nov., and C. zhoui sp. nov.. An updated key to the species of the genus from China is presented.展开更多
Two new species of the genus Oedematopoda (O. jiyuanica sp. nov. and O. furcata sp. nov.) are described based on the specimens collected from Henan and Fujian provinces. Images of the male genitalia are provided.
The family Nassariidae includes a number of species that are distributed throughout the world. Each species has a characteristic shell shape, tooth shape, and behavior. However, the classification of species in this f...The family Nassariidae includes a number of species that are distributed throughout the world. Each species has a characteristic shell shape, tooth shape, and behavior. However, the classification of species in this family of the Rhachiglossa is controversial. We describe the radulae of 22 species from China in detail using optical and scanning electron microscopy. These species are considered to be representatives of two subfamilies, two genera, and 10 subgenera. Our results suggest that the morphology of the central tooth and the pair of lateral teeth and the presence or absence of a pair of intermediate accessory lateral teeth could be used to distinguish among species. We found no support for the subgeneric differentiation of the species. However, the presence or absence of the intermediate lateral accessory plate was characteristic of species divisions. We noted sexual dimorphism in the shape of the teeth in some species, and considerable variability of the shape of teeth within a single species. Based on our results, the genus Nassarius cannot be split into subgenera using radula morphology.展开更多
A new species of deep-water barnacle that belongs to the family Scalpellidae is described from the South China Sea. A rcoscalpellum liui sp. nov. is morphologically similar to A rcoscalpellum gryllum Zevina,but differ...A new species of deep-water barnacle that belongs to the family Scalpellidae is described from the South China Sea. A rcoscalpellum liui sp. nov. is morphologically similar to A rcoscalpellum gryllum Zevina,but differs from the latter by the absence of longitudinal striae on the capitular plates and the presence of caudal appendages with few terminal setae.展开更多
From 1997 to 2000, four field surveys were conducted in the East China Sea (ECS) (23°30'-33°00'N, 118°30'-128°00'E). A field data yield density model was used to determine the optimal salin...From 1997 to 2000, four field surveys were conducted in the East China Sea (ECS) (23°30'-33°00'N, 118°30'-128°00'E). A field data yield density model was used to determine the optimal salinities for 19 dominant copepod species to establish the relationship between surface salinities and abundance of those species. In addition, ecological groups of the copepods were classified based on optimal salinity and geographical distribution. The results indicate that the yield density model is suitable for determining the relationship between salinity and abundance. Cosmocalanus darwini, Euchaeta rimana, Pleuromamma gracilis, Rhincalanus cornutus, Scolecithrix danae and Pareucalanus attenuatus were determined as oceanic species, with optimal salinities of 〉34.0. They were stenohaline and mainly distributed in waters influenced by the Kuroshio or Taiwan warm current. Temora discaudata, T. stylifera and Canthocalanus pauper were nearshore species with optimal salinities of 〈33.0 and most abundant in coastal waters. The remaining 10 species, including Undinula vulgaris and Subeucalanus suberassus, were offshore species, with optimal salinity ranging from 33.0-34.0. They were widely distributed in nearshore, offshore and oceanic waters but mainly in the mixed water of the ECS.展开更多
The genus Cliobata Enderlein is newly recorded from China with the following two new species: Cliobata ecruis sp. nov. and Cliobata choui sp. nov.. This genus was known only from South America and Central America inc...The genus Cliobata Enderlein is newly recorded from China with the following two new species: Cliobata ecruis sp. nov. and Cliobata choui sp. nov.. This genus was known only from South America and Central America including Costa Rica previously. A key to the genera of the subfamily Taeniapterinae from China and a key to the species of Cliobata from China are presented.展开更多
Abstract Selection of net with a suitable mesh size is a key concern in the quantitative assessment of zooplankton, which is cru- cial to understand pelagic ecosystem processes. This study compared the copepod collect...Abstract Selection of net with a suitable mesh size is a key concern in the quantitative assessment of zooplankton, which is cru- cial to understand pelagic ecosystem processes. This study compared the copepod collecting efficiency of three commonly used plankton nets, namely, the China standard coarse net (505 gm mesh), the China standard fine net (77 gin), and the WP-2 net (200 μm) The experiment was performed at six stations in the Bohai Sea during the autumn of 2012. The coarse net substantially un- der-sampled small individuals (body widths 〈 672 gm) and led to the lowest species number in each tow, whereas the fine net col- lected all small copepod species but failed to collect rare species. The WP-2 net appeared to be a compromise of the two other nets, collecting both small copepods and rare species. The abundance of copepods collected by the coarse net (126.4±86.5 indm-3) was one to two orders of magnitude lower than that by the WP-2 net (5802.4 ± 2595.4 indm3), and the value of the fine net (11117.0±4563.41 indm-3) was nearly twice that of the WP-2 net. The abundance of large copepods (i.e., adult Calanus sinicus) in the three nets showed no significant differences, but the abundance of small copepods declined with decreasing mesh size. The dif- ference in abundance resulted from the under-sampling of small copepods with body widths 〈 672 μm and 〈 266μm by the coarse and WP-2 nets, respectively.展开更多
A new species of goneplacid crab, Paragoneplax chenae, is described, based on collections from the Nansha Islands, South China Sea. P. chenae closely resembles its only congener P. serenei (Zarenkov, 1972) in general ...A new species of goneplacid crab, Paragoneplax chenae, is described, based on collections from the Nansha Islands, South China Sea. P. chenae closely resembles its only congener P. serenei (Zarenkov, 1972) in general appearance. They are distinguishable from each other by the male abdominal and gonopodal characters.展开更多
This paper reports a new record of Alpheus tenuicarpus de Man, 1908 that belongs to the Brevirostris group of Alpheus from Chinese seas. The species is re-described and includes morphological characters not in the ori...This paper reports a new record of Alpheus tenuicarpus de Man, 1908 that belongs to the Brevirostris group of Alpheus from Chinese seas. The species is re-described and includes morphological characters not in the original description. A key species are also provided. to species of the group is provided. Remarks on similar展开更多
The ten years of football reform is the time when Chinese football has been developing fastest, but the backward aspect of our Chinese football has not been changed at all. Analyzing the present situation, finding the...The ten years of football reform is the time when Chinese football has been developing fastest, but the backward aspect of our Chinese football has not been changed at all. Analyzing the present situation, finding the reasons and taking measures according to the present situation become urgent work for the workers who are working hard at Chinese football cause.展开更多
A new species from the caridean family Hippolytidae,Eualus heterodactylus sp.nov.is described and illustrated based on the specimens collected from Chinese coast of the Yellow Sea.The new species is a part of an infor...A new species from the caridean family Hippolytidae,Eualus heterodactylus sp.nov.is described and illustrated based on the specimens collected from Chinese coast of the Yellow Sea.The new species is a part of an informal species group characterized by the possession of epipods on the anterior three pairs of pereopods,and is distinguished from other species of this group by the dactyli of the third to fifth pereopods possessing distinctly stair-like flexor margins in males.展开更多
The monotypic genus Phycocaris Kemp, 1916, which was established based on material from the Indian Ocean and previously only known from the type localities, Australia and Japan, is now newly recorded from the South Ch...The monotypic genus Phycocaris Kemp, 1916, which was established based on material from the Indian Ocean and previously only known from the type localities, Australia and Japan, is now newly recorded from the South China Sea. A detailed description of Phycocaris simulans Kemp, 1916 based on the specimen collected from Hainan Island is presented. Specific features and the differences between the Indian Ocean and the present material are described.展开更多
The present paper reports five species of squat lobster, genus Agononida Baba and de Saint Laurent, 1996, of which A. squamosa (Henderson, 1885) and A. cf. variabilis (Baba, 1988) were not previously reported in C...The present paper reports five species of squat lobster, genus Agononida Baba and de Saint Laurent, 1996, of which A. squamosa (Henderson, 1885) and A. cf. variabilis (Baba, 1988) were not previously reported in Chinese waters. All the specimens are kept in the Marine Biological Museum collection in the Institute of Oceanology, Chinese Academy of Sciences, Qingdao. To date, there have been l 1 species of this genus recorded from China's seas. A key to those species is provided in this paper.展开更多
Viviparidae are widely distributed around the globe, but there are considerable gaps in the taxonomic record. To date, 18 species of the viviparid genus Cipangopaludina have been recorded in China, but there is substa...Viviparidae are widely distributed around the globe, but there are considerable gaps in the taxonomic record. To date, 18 species of the viviparid genus Cipangopaludina have been recorded in China, but there is substantial disagreement on the validity of this taxonomy. In this study, we described the shell and internal traits of these species to better discuss the validity of related species. We found that C. ampulliformis is synonym of C. lecythis, and C. wingatei is synonym of C. chinensis, while C. ampullacea and C. fluminalis are subspecies of C. lecythis and C. chinensis, respectively. C. dianchiensis should be paled in the genus Margarya, while C. menglaensis and C. yunnanensis belong to genus Mekongia. Totally, this leaves 11 species and 2 subspecies recorded in China. Based on whether these specimens' spiral whorl depth was longer than aperture depth, these species or subspecies can be further divided into two groups, viz. chinensis group and cathayensis group, which can be determined from one another via the ratio of spiral depth and aperture depth, vas deferens and number of secondary branches of vas deferens. Additionally, Principal Component Analysis indicated that body whorl depth, shell width, aperture width and aperture length were main variables during species of Cipangopaludina. A key to all valid Chinese Cipangopaludina species were given.展开更多
In this study,we investigated the community structure of crustaceans(decapod and stomatopod) inhabiting the sandy mud bottoms of Laizhou Bay(northeastern China) monthly from May 2011 to April 2012.Investigation was st...In this study,we investigated the community structure of crustaceans(decapod and stomatopod) inhabiting the sandy mud bottoms of Laizhou Bay(northeastern China) monthly from May 2011 to April 2012.Investigation was stopped from December 2011 to February 2012 because of the extreme weather and sea ice.A total of 205,057 specimens belonging to 31 species(shrimp,15;crab,15;and stomatopod,1) were collected in 148 hauls.From 2011 to 2012,Oratosquilla oratoria was the dominant biomass species(47.80%),followed by Charybdis japonica(15.49%),Alpheus japonicas(12.61%),Portunus trituberculatus(6.46%),and Crangon spp.(4.19%).Crangon spp.was the most dominant species by individual(32.55%).O.oratoria was the most-frequently encountered species(81.76%),followed by Palaemon gravieri(70.95%),C.japonica(65.54%),A.japonicas(62.16%),and P.trituberculatus(54.73%).The biomass density increased from August to September 2011 and decreased from March 2012 to April 2012.The dynamics of the ecological indices evolve in a similar manner,with high values of diversity and evenness and rich species from May to June 2011 and low values from September to October 2011.O.oratoria,C.japonica,and P.trituberculatus differed by biomass data between groups I(samples obtained from September to October 2011) and II(samples in other months).These species contributed more than 70% to the similarity of the crustacean community structure.Furthermore,the subsets of environmental variables that best matched the crustacean-assemblage structure were as follows:water depth(WD) in summer(June to August);sea surface temperature(SST),dissolved oxygen(DO),and WD in autumn(September to November);and DO,salinity,and WD in spring(March to May).The calculated correlation coefficients and significance level were higher in the period of July to August 2011 than in other months.Comparing 2011 to 2012 with 1982 to 1983,the species composition remained stable.However,the dominant species changed significantly.High value and large species,such as F.chinensis,P.trituberculatus,and T.curvirostris,have been replaced by low value and small species(i.e.,Crangon spp.,P.gravieri,and C.japonica).展开更多
Comparative experiments on the inactivation of Copepod were investigated in southern China. The 100% of inactivation effect may be attained by 3.0 mg/L of ozone for contacting time of 25 min, whereas 0.5 mg/L of dosag...Comparative experiments on the inactivation of Copepod were investigated in southern China. The 100% of inactivation effect may be attained by 3.0 mg/L of ozone for contacting time of 25 min, whereas 0.5 mg/L of dosage resulted in only 30% of inactivation rate. Copepod may not be completely inactivated by ozone oxidation for feasible dosage limited by higher bromide in raw water. The favorable environment of granular activated carbon (GAC) filter provided Copepod with conditions for excess propagation, The disinfection experimental results show that the inactivation rate is 90% by 2.0 mg/L of chloramines for contacting time of 30 min, whereas only 70% is attained with chlorine. The GC-MS examination indicates that the total organic substance is increased to 92 specie: inciuding 13 sorts of halogenated hydrocarbon by chlorine disnfection, which is more than that of chloramines. More products of bromiinated trihalomethanes occur in treated water by chlorine, disinfection and total amount of THMs is 3 times as high as that of chloramines.展开更多
This paper reports two species of the family Pyramidellidae (Gastropoda, Heterobranchia), Otopleura nitida (A. Adams, 1854) and Rugadentia manzakiana (Yokoyama, 1922). The former was from the South China Sea and the l...This paper reports two species of the family Pyramidellidae (Gastropoda, Heterobranchia), Otopleura nitida (A. Adams, 1854) and Rugadentia manzakiana (Yokoyama, 1922). The former was from the South China Sea and the latter was from the Yellow Sea and East China Sea. The study was based on the collections deposited in the Marine Biological Museum, Chinese Academy of Sciences. This is for the first time that these species have been recorded in China seas. In the current contribution, we describe and illustrate these two species, and compare them with similar species.展开更多
文摘The mating calls of six forms belonging to four genera Megophrys,Oreloalax,Scutiger and Leptolalax were recorded in Wawu Mountain National Forest Park,Sichuan Province of China,using cassette tape recorder (Aiwa) and Sony tape with an external microphone.All recordings were analyzed with an IBM PC based 'SIGNAL' software analysis system (Engineering Design,USA).The range of analyzed frequency was set as 0-10 kHz.Acoustic analysis shows that the dominant frequency of L.oshanensis,M.minor,M.sp.,S.(S.)chintingensis,O.omeimontis,and O.schmidti is 4521.9,3456.4,2293.8,1076.5,1071.0 and 1849.4 Hz on average respectively;the note duration is 46.2,90.8,99.6,72.2,78.8 and 110.3 millisecond on average respectively;the note interval is 140.4,253.0,681.4,1517.7,461.3 and 619.5 millisecond on average respectively.One-Way ANOVA analysis indicates that there are significant differences among the analyzed six forms on the dominant frequency,the note duration,and the note interval (P<0.01).Multiple comparisons using Least-Significant Difference (LSD) show that the difference of the dominant frequency between S.(S.) chintingensis and O.omeimontis is not significant (P=0.917>0.05);on the note duration,only L.oshanensis is significantly different from M.minor,M.sp.,O.omeimontis and O.schmidti (P<0.01);on the note interval,L.oshanensis is not significantly different from M.minor,the same with M.sp.versus O.schmidti and O.omeimontis versus O.schmidti (P>0.05).Correlation analysis indicates that there are no significant correlation among the three acoustic characters of dominant frequency,note duration and note interval,and two environmental factors of the elevation and air temperature (P>0.05) except that the note interval is significantly linear correlated with the elevation (r=0.943,P=0.005<0.01).In the light of above,it is suggested that acoustic characteristics of calls are useful in distinguishing forms;the change of the note interval with the elevation may be a kind of strategy of reproduction.
文摘Four new record species of the cohort Uropodina from China are described and figured,they are Dinychus undulatus Sellnick,Dinychus septentrionalis(Trgrdh),Discourella baloghi Hirschmann et Nicol Z.and Discourella modesta(Leonardi).All the specimens were collected from the Changbai Mountain,Jilin Province.All measurements are given in microns(μm).
基金funded by the National Natural Science Foundation of China(No.30970395)Beijing Natural Science Foundation(No.5092014)
文摘The following five species of Chrysosoma are described as new to science: C. damingshanum sp. nov., C. digitatum sp. nov., C. longum sp. nov., C. tongbiguanum sp. nov., and C. zhoui sp. nov.. An updated key to the species of the genus from China is presented.
基金The research was supported by the National Natural Science Foundation of China (No. 30570206)Foundation of Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education (Northwest A & F University)
文摘Two new species of the genus Oedematopoda (O. jiyuanica sp. nov. and O. furcata sp. nov.) are described based on the specimens collected from Henan and Fujian provinces. Images of the male genitalia are provided.
基金Supported by the National Natural Science Foundation of China (No. 41076104)the Knowledge Innovation Program of Chinese Academy of Sciences (No. KSCX2-YW-Z-0916)the Knowledge Innovation Program of Institute of Oceanology, Chinese Academy of Sciences (No. 2007-12)
文摘The family Nassariidae includes a number of species that are distributed throughout the world. Each species has a characteristic shell shape, tooth shape, and behavior. However, the classification of species in this family of the Rhachiglossa is controversial. We describe the radulae of 22 species from China in detail using optical and scanning electron microscopy. These species are considered to be representatives of two subfamilies, two genera, and 10 subgenera. Our results suggest that the morphology of the central tooth and the pair of lateral teeth and the presence or absence of a pair of intermediate accessory lateral teeth could be used to distinguish among species. We found no support for the subgeneric differentiation of the species. However, the presence or absence of the intermediate lateral accessory plate was characteristic of species divisions. We noted sexual dimorphism in the shape of the teeth in some species, and considerable variability of the shape of teeth within a single species. Based on our results, the genus Nassarius cannot be split into subgenera using radula morphology.
基金Supported by the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA1103040102)the National Natural Science Foundation of China(No.31172054)
文摘A new species of deep-water barnacle that belongs to the family Scalpellidae is described from the South China Sea. A rcoscalpellum liui sp. nov. is morphologically similar to A rcoscalpellum gryllum Zevina,but differs from the latter by the absence of longitudinal striae on the capitular plates and the presence of caudal appendages with few terminal setae.
基金Supported by the National Natural Science Foundation of China (Nos. 40776047, 90511005)the National Basic Research Program of China (973 Project) (No. 2010CB428705)
文摘From 1997 to 2000, four field surveys were conducted in the East China Sea (ECS) (23°30'-33°00'N, 118°30'-128°00'E). A field data yield density model was used to determine the optimal salinities for 19 dominant copepod species to establish the relationship between surface salinities and abundance of those species. In addition, ecological groups of the copepods were classified based on optimal salinity and geographical distribution. The results indicate that the yield density model is suitable for determining the relationship between salinity and abundance. Cosmocalanus darwini, Euchaeta rimana, Pleuromamma gracilis, Rhincalanus cornutus, Scolecithrix danae and Pareucalanus attenuatus were determined as oceanic species, with optimal salinities of 〉34.0. They were stenohaline and mainly distributed in waters influenced by the Kuroshio or Taiwan warm current. Temora discaudata, T. stylifera and Canthocalanus pauper were nearshore species with optimal salinities of 〈33.0 and most abundant in coastal waters. The remaining 10 species, including Undinula vulgaris and Subeucalanus suberassus, were offshore species, with optimal salinity ranging from 33.0-34.0. They were widely distributed in nearshore, offshore and oceanic waters but mainly in the mixed water of the ECS.
文摘The genus Cliobata Enderlein is newly recorded from China with the following two new species: Cliobata ecruis sp. nov. and Cliobata choui sp. nov.. This genus was known only from South America and Central America including Costa Rica previously. A key to the genera of the subfamily Taeniapterinae from China and a key to the species of Cliobata from China are presented.
基金funded by the Fundamental Research Funds for the Central Universities (No.201262017)the National Natural Science Foundation of China (No.41210008)
文摘Abstract Selection of net with a suitable mesh size is a key concern in the quantitative assessment of zooplankton, which is cru- cial to understand pelagic ecosystem processes. This study compared the copepod collecting efficiency of three commonly used plankton nets, namely, the China standard coarse net (505 gm mesh), the China standard fine net (77 gin), and the WP-2 net (200 μm) The experiment was performed at six stations in the Bohai Sea during the autumn of 2012. The coarse net substantially un- der-sampled small individuals (body widths 〈 672 gm) and led to the lowest species number in each tow, whereas the fine net col- lected all small copepod species but failed to collect rare species. The WP-2 net appeared to be a compromise of the two other nets, collecting both small copepods and rare species. The abundance of copepods collected by the coarse net (126.4±86.5 indm-3) was one to two orders of magnitude lower than that by the WP-2 net (5802.4 ± 2595.4 indm3), and the value of the fine net (11117.0±4563.41 indm-3) was nearly twice that of the WP-2 net. The abundance of large copepods (i.e., adult Calanus sinicus) in the three nets showed no significant differences, but the abundance of small copepods declined with decreasing mesh size. The dif- ference in abundance resulted from the under-sampling of small copepods with body widths 〈 672 μm and 〈 266μm by the coarse and WP-2 nets, respectively.
基金Supported by the Ministry of Science and Technology of China (No.2006FY110500)
文摘A new species of goneplacid crab, Paragoneplax chenae, is described, based on collections from the Nansha Islands, South China Sea. P. chenae closely resembles its only congener P. serenei (Zarenkov, 1972) in general appearance. They are distinguishable from each other by the male abdominal and gonopodal characters.
基金Supported by the National Natural Science Foundation of China(No.31172054)the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA1103040102)
文摘This paper reports a new record of Alpheus tenuicarpus de Man, 1908 that belongs to the Brevirostris group of Alpheus from Chinese seas. The species is re-described and includes morphological characters not in the original description. A key species are also provided. to species of the group is provided. Remarks on similar
文摘The ten years of football reform is the time when Chinese football has been developing fastest, but the backward aspect of our Chinese football has not been changed at all. Analyzing the present situation, finding the reasons and taking measures according to the present situation become urgent work for the workers who are working hard at Chinese football cause.
基金Supported by the National Natural Science Foundation of China(Nos.41376163,30499340)the Institute of Oceanology,Chinese Academy of Sciences(No.2012IO060105)
文摘A new species from the caridean family Hippolytidae,Eualus heterodactylus sp.nov.is described and illustrated based on the specimens collected from Chinese coast of the Yellow Sea.The new species is a part of an informal species group characterized by the possession of epipods on the anterior three pairs of pereopods,and is distinguished from other species of this group by the dactyli of the third to fifth pereopods possessing distinctly stair-like flexor margins in males.
基金Supported by the Marine Public Welfare Project of China Program(No.201505004)the National Natural Science Foundation of China(Nos.41506171,41376163)
文摘The monotypic genus Phycocaris Kemp, 1916, which was established based on material from the Indian Ocean and previously only known from the type localities, Australia and Japan, is now newly recorded from the South China Sea. A detailed description of Phycocaris simulans Kemp, 1916 based on the specimen collected from Hainan Island is presented. Specific features and the differences between the Indian Ocean and the present material are described.
基金Supported by the National Natural Science Foundation of China(Nos.31071889,30499340)
文摘The present paper reports five species of squat lobster, genus Agononida Baba and de Saint Laurent, 1996, of which A. squamosa (Henderson, 1885) and A. cf. variabilis (Baba, 1988) were not previously reported in Chinese waters. All the specimens are kept in the Marine Biological Museum collection in the Institute of Oceanology, Chinese Academy of Sciences, Qingdao. To date, there have been l 1 species of this genus recorded from China's seas. A key to those species is provided in this paper.
基金funded by the National Natural Science Foundation of China(31301865)the Natural Science Foundation of Zhejiang Province of China(LY12C19006)the Collection and Preparation of Display Specimens at Kunming Natural History Museum of Zoology(KSZD–EW–TZ–005)
文摘Viviparidae are widely distributed around the globe, but there are considerable gaps in the taxonomic record. To date, 18 species of the viviparid genus Cipangopaludina have been recorded in China, but there is substantial disagreement on the validity of this taxonomy. In this study, we described the shell and internal traits of these species to better discuss the validity of related species. We found that C. ampulliformis is synonym of C. lecythis, and C. wingatei is synonym of C. chinensis, while C. ampullacea and C. fluminalis are subspecies of C. lecythis and C. chinensis, respectively. C. dianchiensis should be paled in the genus Margarya, while C. menglaensis and C. yunnanensis belong to genus Mekongia. Totally, this leaves 11 species and 2 subspecies recorded in China. Based on whether these specimens' spiral whorl depth was longer than aperture depth, these species or subspecies can be further divided into two groups, viz. chinensis group and cathayensis group, which can be determined from one another via the ratio of spiral depth and aperture depth, vas deferens and number of secondary branches of vas deferens. Additionally, Principal Component Analysis indicated that body whorl depth, shell width, aperture width and aperture length were main variables during species of Cipangopaludina. A key to all valid Chinese Cipangopaludina species were given.
基金supported by the National Basic Research Program of China (973 Program) (No.2015CB453303)the Special Fund for Agro-scientific Research in the Public Interest (No.201303050)the Taishan Scholar Program of Shandong Province (200867)
文摘In this study,we investigated the community structure of crustaceans(decapod and stomatopod) inhabiting the sandy mud bottoms of Laizhou Bay(northeastern China) monthly from May 2011 to April 2012.Investigation was stopped from December 2011 to February 2012 because of the extreme weather and sea ice.A total of 205,057 specimens belonging to 31 species(shrimp,15;crab,15;and stomatopod,1) were collected in 148 hauls.From 2011 to 2012,Oratosquilla oratoria was the dominant biomass species(47.80%),followed by Charybdis japonica(15.49%),Alpheus japonicas(12.61%),Portunus trituberculatus(6.46%),and Crangon spp.(4.19%).Crangon spp.was the most dominant species by individual(32.55%).O.oratoria was the most-frequently encountered species(81.76%),followed by Palaemon gravieri(70.95%),C.japonica(65.54%),A.japonicas(62.16%),and P.trituberculatus(54.73%).The biomass density increased from August to September 2011 and decreased from March 2012 to April 2012.The dynamics of the ecological indices evolve in a similar manner,with high values of diversity and evenness and rich species from May to June 2011 and low values from September to October 2011.O.oratoria,C.japonica,and P.trituberculatus differed by biomass data between groups I(samples obtained from September to October 2011) and II(samples in other months).These species contributed more than 70% to the similarity of the crustacean community structure.Furthermore,the subsets of environmental variables that best matched the crustacean-assemblage structure were as follows:water depth(WD) in summer(June to August);sea surface temperature(SST),dissolved oxygen(DO),and WD in autumn(September to November);and DO,salinity,and WD in spring(March to May).The calculated correlation coefficients and significance level were higher in the period of July to August 2011 than in other months.Comparing 2011 to 2012 with 1982 to 1983,the species composition remained stable.However,the dominant species changed significantly.High value and large species,such as F.chinensis,P.trituberculatus,and T.curvirostris,have been replaced by low value and small species(i.e.,Crangon spp.,P.gravieri,and C.japonica).
基金National Natural Science Foundation of China(No.50808065)National Key High-Tech Program(863) of China(No.2006AA06Z311)Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Open Project,China(No.2006KJ006)
文摘Comparative experiments on the inactivation of Copepod were investigated in southern China. The 100% of inactivation effect may be attained by 3.0 mg/L of ozone for contacting time of 25 min, whereas 0.5 mg/L of dosage resulted in only 30% of inactivation rate. Copepod may not be completely inactivated by ozone oxidation for feasible dosage limited by higher bromide in raw water. The favorable environment of granular activated carbon (GAC) filter provided Copepod with conditions for excess propagation, The disinfection experimental results show that the inactivation rate is 90% by 2.0 mg/L of chloramines for contacting time of 30 min, whereas only 70% is attained with chlorine. The GC-MS examination indicates that the total organic substance is increased to 92 specie: inciuding 13 sorts of halogenated hydrocarbon by chlorine disnfection, which is more than that of chloramines. More products of bromiinated trihalomethanes occur in treated water by chlorine, disinfection and total amount of THMs is 3 times as high as that of chloramines.
基金Supported by the National Marine Public Welfare Research Project(No.200805069)the National Natural Science Foundation of China(No.41076104)the Knowledge Innovation Program of Institute of Oceanology,Chinese Academy of Sciences(No.2007-12)
文摘This paper reports two species of the family Pyramidellidae (Gastropoda, Heterobranchia), Otopleura nitida (A. Adams, 1854) and Rugadentia manzakiana (Yokoyama, 1922). The former was from the South China Sea and the latter was from the Yellow Sea and East China Sea. The study was based on the collections deposited in the Marine Biological Museum, Chinese Academy of Sciences. This is for the first time that these species have been recorded in China seas. In the current contribution, we describe and illustrate these two species, and compare them with similar species.