Aquatic Biology最新文献_第10页

Tintinnid community structure in the eastern equatorial Indian Ocean during the spring inter‑monsoon period 赤道东印度洋春季季风间期丁丁类群落结构

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-08-09 DOI: 10.3354/AB00677

Cuixia Zhang, Jun Sun, Dongxiao Wang, Shu-qun Song, Xiaodong Zhang, Sonia Munir

{"title":"Tintinnid community structure in the eastern equatorial Indian Ocean during the spring inter‑monsoon period","authors":"Cuixia Zhang, Jun Sun, Dongxiao Wang, Shu-qun Song, Xiaodong Zhang, Sonia Munir","doi":"10.3354/AB00677","DOIUrl":"https://doi.org/10.3354/AB00677","url":null,"abstract":"Tintinnid community structure was investigated by plankton net (20 mu m) sampling in the water column (0-200 m) at 33 stations during the spring inter-monsoon (10 March to 9 April 2012) in the eastern equatorial Indian Ocean. A total of 126 species belonging to 32 genera were recorded. Tintinnid abundance and biomass in the range of 193-2983 ind. m(-3) and 0.99-14.75 mu g C m(-3) were positively related to integrated chlorophyll a (chl a) concentration. Taxonomic and morphological diversity were not significantly related to integrated chl a concentration and size diversity, estimated by size-fractionated chl a concentration in the water column of 0-200 m, but were negatively correlated to the depth of the deep chlorophyll maximum. Species abundance distributions at most stations (31 of 33) and in the 3 zones-the northern zone of the equator, the southern zone of the equator (SEQ) and the equator (EQ)-followed a typical lognormal distribution. The geometric distribution gave the best fit for the distribution of lorica oral diameter size-classes in the NEQ and SEQ. Our results suggest that the community structure of tintinnids is governed by the underlying water column environment rather than by the neutral theory of random colonization from a large species pool.","PeriodicalId":8111,"journal":{"name":"Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2017-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86267498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Acute sulphide toxicity in Perinereis aibuhitensis under different salinities and temperatures: LC50 and antioxidant responses 不同盐度和温度下的急性硫化物毒性:LC50和抗氧化反应

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-06-19 DOI: 10.3354/AB00674

Haiqing Wang, Guodong Wang, Jianguang Fang, Zengjie Jiang, M. Du, Yaping Gao, Jinghui Fang

{"title":"Acute sulphide toxicity in Perinereis aibuhitensis under different salinities and temperatures: LC50 and antioxidant responses","authors":"Haiqing Wang, Guodong Wang, Jianguang Fang, Zengjie Jiang, M. Du, Yaping Gao, Jinghui Fang","doi":"10.3354/AB00674","DOIUrl":"https://doi.org/10.3354/AB00674","url":null,"abstract":"Sulphide accumulates in sediment due to global aquaculture development and is very harmful to aquatic and benthic ecosystems. Perinereis aibuhitensis inhabits coastal areas and is often exposed to fairly high sulphide concentrations. The present study investigated the tolerance of P. aibuhitensis to sulphide to evaluate its potential application in sulphide remediation and sustainable aquaculture. We assessed the toxicity of sulphide on P. aibuhitensis in a 96 h acute sulphide exposure experiment under different temperature and salinity conditions. Two-way ANOVA showed that increasing salinity did not influence the LC50 of P. aibuhitensis exposed to sulphide. In contrast, increasing temperature significantly augmented the LC50 value (p < 0.05). The results showed a negative relationship between mortality and temperature, and between mortality and exposure time. Subsequently, we performed 2-way ANOVA analysis of the antioxidant (superoxide dismutase [SOD], catalase [CAT] and total antioxidant capacity [T-AOC]) responses of P. aibuhitensis during 96 h exposure to sub-lethal sulphide concentrations (0, 80, 160, 320, and 640 μmol l−1), and a sub sequent recovery period. The activation of this antioxidant defense system appeared to depend on sulphide concentration and exposure duration and their interaction. SOD, CAT, and T-AOC showed obvious differences at the beginning and end of exposure. They were steadily restored during the recovery period. The results indicated that P. aibuhitensis adjusts its antioxidant defense system to cope with sulphide contamination. Therefore, these indexes of P. aibuhitensis could be applied to environmental monitoring and bio-restoration at mudflat or intensive aquaculture areas with high sulphide concentrations.","PeriodicalId":8111,"journal":{"name":"Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2017-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85054946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Assignment of parentage by microsatellite analysis in the endangered Brachymystax lenok tsinlingensis (Salmonidae) 用微卫星分析鉴定濒临灭绝的青岭短柄霉(鲑科)亲本

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-06-19 DOI: 10.3354/AB00675

J. Shao, W. Luo, Q. Wei, Feng Wang, Wei Guo, H. Ye, Zhipeng Chu, Jinming Wu, Shuhuan Zhang

引用次数: 2

Effects of rapamycin on life span and on expression of TOR and S6K in Brachionus calyciflorus (Rotifera) 雷帕霉素对萼花臂尾轮虫寿命及TOR和S6K表达的影响

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-05-15 DOI: 10.3354/AB00673

Huan-Zhi Xu, Lulu Liu, Yuqi Su, Ye Liang, Jiaxin Yang

{"title":"Effects of rapamycin on life span and on expression of TOR and S6K in Brachionus calyciflorus (Rotifera)","authors":"Huan-Zhi Xu, Lulu Liu, Yuqi Su, Ye Liang, Jiaxin Yang","doi":"10.3354/AB00673","DOIUrl":"https://doi.org/10.3354/AB00673","url":null,"abstract":"The mechanistic target of rapamycin (mTOR) coordinates a complex signal pathway from translation to autophagy that is a key regulator of not only growth and proliferation but also metabolism and aging. mTOR is sensitive to many environmental and endocrine stimuli. We investigated the influence of TOR signaling on aging and reproduction of the rotifer Brachionus calyciflorus using rapamycin as an exogenous inhibitor. We found that 2 and 4 μM rapamycin extended B. calyciflorus life span by 15 and 22%, respectively compared with controls (p < 0.05). The reproductive peak was significantly delayed by rapamycin at 2 and 4 μM (p < 0.01), but the preand post-reproduction periods were not significantly different from controls (p > 0.05). Partial cDNAs coding 375 bp for TOR and 951 bp for S6 kinase (S6K) were obtained from B. calyciflorus expressed sequence tags. The identities of the deduced amino acid sequences of B. calyciflorus cDNAs to their human orthologs were 58% for TOR and 68% for S6K. TOR and S6K mRNA expression were upor down-regulated by different rapamycin concentrations (0.5, 1, 2, 4, 8, and 16 μM) and treatment intervals (control, 12, 24, 36, and 48 h). The results indicated that TOR inhibition acted additively to extend rotifer life span, with upand down-regulation simultaneously impacting reproduction and gene expression.","PeriodicalId":8111,"journal":{"name":"Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2017-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89020432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Population status of freshwater turtles across a PCB contamination gradient 跨多氯联苯污染梯度的淡水龟种群状况

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-05-15 DOI: 10.3354/AB00676

J. Gibbs, S. Rouhani, L. Shams

引用次数: 2

In situ measurements of righting behavior in the common sea urchin Lytechinus variegatus: the importance of body size, substrate type, and covering material 普通海胆直立行为的原位测量:体型、基质类型和覆盖材料的重要性

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-02-21 DOI: 10.3354/AB00669

R. Challener, J. McClintock

{"title":"In situ measurements of righting behavior in the common sea urchin Lytechinus variegatus: the importance of body size, substrate type, and covering material","authors":"R. Challener, J. McClintock","doi":"10.3354/AB00669","DOIUrl":"https://doi.org/10.3354/AB00669","url":null,"abstract":"Righting behavior has been used extensively in laboratory studies of sea urchins as an indicator of stress under various environmental conditions. In situ measurements of the natural righting response of sea urchins would serve to place such laboratory measurements in an ecological context as well as potentially validate laboratory control conditions. We investigated the righting response of the sea urchin Lytechinus variegatus in seagrass and sand bottom habitats of Saint Joseph’s Bay, Florida. Field-measured righting times (other than the exception mentioned below) in L. variegatus were similar to those measured in laboratory studies. Moreover, as seen in multiple sea urchin species in laboratory studies, smaller individuals exhibited significantly shorter righting times than larger individuals. Importantly, sea urchins lacking covering material (shell material, seagrass blades) that were placed on open sand patches took significantly longer to right than those with covering material placed on sand patches. Our field observations indicate the importance of sea urchin size, substrate type, and the presence or absence of covering materials when making righting measurements in the laboratory or the field. Our findings also suggest that higher water velocities facilitate righting, as at higher flows on sand patches, the presence/absence of covering material no longer significantly impacted righting time. These findings are ecologically important as they indicate that, under certain natural conditions (sand substrate, low availability of covering materials and low water velocities), L. variegatus that are displaced onto their aboral side are more vulnerable to predation.","PeriodicalId":8111,"journal":{"name":"Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2017-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80683640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Identification and analysis of microRNAs in Botryococcus braunii using high-throughput sequencing 利用高通量测序技术鉴定和分析脑杆菌球菌microrna

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-02-21 DOI: 10.3354/AB00672

Xiangyuan Deng, Xiao-li Hu, Da Li, Ling Wang, Jie Cheng, Kun Gao

引用次数: 5

Preliminary observations of caulerpin accumulation from the invasive Caulerpa cylindracea in native Mediterranean fish species 入侵的圆柱菌在地中海本地鱼类中积累茎尖素的初步观察

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-02-21 DOI: 10.3354/AB00671

S. Felline, E. Mollo, A. Cutignano, L. Grauso, F. Andaloro, L. Castriota, P. Consoli, M. Falautano, M. Sinopoli, A. Terlizzi

{"title":"Preliminary observations of caulerpin accumulation from the invasive Caulerpa cylindracea in native Mediterranean fish species","authors":"S. Felline, E. Mollo, A. Cutignano, L. Grauso, F. Andaloro, L. Castriota, P. Consoli, M. Falautano, M. Sinopoli, A. Terlizzi","doi":"10.3354/AB00671","DOIUrl":"https://doi.org/10.3354/AB00671","url":null,"abstract":"Recent studies have shown that the Mediterranean white sea bream Diplodus sargus includes the invasive green alga Caulerpa cylindracea in its diet, with consequent metabolic and enzymatic alterations. As a result of this novel alimentary habit, the bioactive algal red pigment caulerpin has been detected in its tissues. However, this may not be an isolated case: other fish species have also been reported to feed on C. cylindracea, although the possible accumulation of caulerpin in their tissues has not yet been investigated. In this report, we analysed stomach contents and caulerpin levels in the native sparid species Spondyliosoma cantharus, Sarpa salpa, and Diplodus vulgaris, and in the scarid Sparisoma cretense, along with the Lessepsian siganid Siganus luridus. C. cylindracea was found in the stomachs of all but one fish species, the exception being S. cretense, in which prey items could not be determined due to the high degree of digestion. Chemical analysis of fish tissues revealed that only S. cantharus and S. salpa accumulated caulerpin, while no traces of the compound were detected in the other species. Despite intense research efforts on natural products obtained from C. cylindracea, a complete picture of the impacts caused by fish including this alga in their diet has not been elucidated. The identification of caulerpin in other Mediterranean native fish suggests a need for further research in order to assess the possible transfer of such molecules to humans through seafood consumption.","PeriodicalId":8111,"journal":{"name":"Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2017-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90259783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Ontogenetic changes in dietary carbon sources and trophic position of two co-occurring horseshoe crab species in southwestern China 西南地区两种共生马蹄蟹日粮碳源及营养地位的个体发生变化

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-02-06 DOI: 10.3354/AB00670

L. Fan, Chang‐Po Chen, Mingqiu Yang, Guanglong Qiu, Yong-Yan Liao, H. Hsieh

{"title":"Ontogenetic changes in dietary carbon sources and trophic position of two co-occurring horseshoe crab species in southwestern China","authors":"L. Fan, Chang‐Po Chen, Mingqiu Yang, Guanglong Qiu, Yong-Yan Liao, H. Hsieh","doi":"10.3354/AB00670","DOIUrl":"https://doi.org/10.3354/AB00670","url":null,"abstract":"Understanding which food sources are nutritionally important at nursery grounds is critical in the conservation of the dwindling populations of horseshoe crabs in Asia. We used δ13C and δ15N values to define life-stage changes in dietary carbon sources and trophic position of 2 co-occurring horseshoe crab species, Tachypleus tridentatus and Carci no scorpius rotundicauda, in a mangroveand seagrass-vegetated estuary, Pearl Bay, in Guangxi, China. δ13C signatures in tissues of T. tridentatus and C. rotundicauda varied between species and among life stages within species, with the greatest differences occurring among earlier life stages (instars 5−7; 20−30 mm prosomal width). Life-stage specific diets were consistent with known habitat use by the 2 horseshoe crab species, with T. tridentatus reflecting slightly enriched seagrass carbon sources and C. ro tun di cauda reflecting influences of lighter sediment particulate organic matter (POM; −15.1 vs. ~ −15.8‰). Overall, seagrass contributed most to dietary carbon of both species (~60%), followed by sediment POM (35%). δ15N signatures were similar between species (~11.6‰), with C. rotundicauda adults exhibiting a slightly more enriched signal than juveniles (12.7 vs. 11.6‰), and all horseshoe crabs occupied secondary consumer trophic levels. The δ15N signatures in horseshoe crabs at Pearl Bay were lighter than those from more urbanized waters, likely due to lower anthropogenic nitrogen loading. Our data and those of previous studies suggest that effective international and national strategies for conserving threatened Asian horseshoe crabs would benefit from incorporating efforts to protect seagrass and mangrove habitats. Newly molted juvenile horseshoe crab (left) and its old shell (right) on a tidal flat adjacent to mangroves in the Pearl Bay estuary (Guangxi, China). Photo: Chang-Po Chen","PeriodicalId":8111,"journal":{"name":"Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2017-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85096195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Thermal ecology of red lionfish Pterois volitans from Southeast Sulawesi, Indonesia, with comparisons to other Scorpaenidae 印度尼西亚苏拉威西岛东南部红狮子鱼(Pterois volitans)的热生态学及其与其他蝎科鱼类的比较

IF 1.4 4区生物学

Aquatic Biology Pub Date : 2017-02-06 DOI: 10.3354/AB00668

Theresa F. Dabruzzi, W. Bennett, N. Fangue

{"title":"Thermal ecology of red lionfish Pterois volitans from Southeast Sulawesi, Indonesia, with comparisons to other Scorpaenidae","authors":"Theresa F. Dabruzzi, W. Bennett, N. Fangue","doi":"10.3354/AB00668","DOIUrl":"https://doi.org/10.3354/AB00668","url":null,"abstract":"Scorpionfishes (family Scorpaenidae) occupy a wide range of thermal environments, yet little is known about the group’s thermal ecology. Recent invasions by red lionfish Pterois volitans and devil firefish P. miles into the Atlantic Ocean and Mediterranean Sea have stimulated interest in the ability of these species to withstand thermal extremes, but current temperature data are limited to cold tolerance estimates, or employ nonstandard techniques, making it difficult to compare values across studies. Using standardized methodologies, we quantified metabolic, physiological, and behavioral thermal responses of red lionfish from the Banda Sea, Sulawesi, Indonesia, and interpret the data in light of the group’s diversity and range of thermal habitats. Red lionfish acclimated at temperatures between 13 and 32°C exhibit a thermal scope of nearly 25°C. The resulting thermal niche is moderately large, allowing lionfish to exploit a wide range of thermal habitats, from mid-Atlantic coastal waters to hyperthermal tropical mangroves and tidepools. Although lionfish prefer temperatures of ~23°C, they acclimate to the high temperature of a cycling thermoperiod. This feature, along with their comparatively low temperature sensitivity (metabolic temperature quotient <2), likely permits lionfish to limit energetic costs during forays into warmer waters. Although lionfishes are considered to be a tropical group, they exhibit a number of thermal tolerance characteristics that allow them to persist in some surprisingly cool environments. Modeling thermal strategies used by red lionfish may provide new insights to the range and variability of thermal adaptations of scorpaenid fishes in general.","PeriodicalId":8111,"journal":{"name":"Aquatic Biology","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2017-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80364741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 23