Scientia Marina最新文献_第10页

Long-term dynamics in nutrients, chlorophyll a and water quality parameters in the Lagoon of Venice 威尼斯泻湖营养物质、叶绿素a和水质参数的长期动态

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-09-15 DOI: 10.3989/scimar.05022.30a

F. Acri, Federica Braga, F. Bernardi Aubry

引用次数: 6

Ostreopsis cf. ovata and Ostreopsis lenticularis (Dinophyceae: Gonyaulacales) in the Galapagos Marine Reserve 加拉帕戈斯群岛海洋保护区的卵形和透镜状角链opsis(恐龙科:Gonyaulacales)

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-09-15 DOI: 10.3989/scimar.05035.08a

Olga Carnicer, Y. Okolodkov, María García‐Altares, I. Keith, K. Andree, J. Diogène, M. Fernández-Tejedor

{"title":"Ostreopsis cf. ovata and Ostreopsis lenticularis (Dinophyceae: Gonyaulacales) in the Galapagos Marine Reserve","authors":"Olga Carnicer, Y. Okolodkov, María García‐Altares, I. Keith, K. Andree, J. Diogène, M. Fernández-Tejedor","doi":"10.3989/scimar.05035.08a","DOIUrl":"https://doi.org/10.3989/scimar.05035.08a","url":null,"abstract":"The genus of benthic dinoflagellates Ostreopsis is of particular interest because some species negatively impact human health and coastal marine ecosystems. Ostreopsis populations from a remote area, such as the Galapagos Marine Reserve with its unique biodiversity, can provide significant data. Samples of epibionthic dinoflagellates were collected from two islands (Santa Cruz and Santa Fe) in 2017. Species of the genera Gambierdiscus, Amphidinium, Coolia and Ostreopsis were found. Ostreopsis strains were isolated to characterize their morphology, molecular biology and toxicity. Three different morphotypes of Ostreopsis based on dorsoventral and width diameters (n=369) were distinguished. The small cell morphotype was dominant in ten samples, with abundances of up to 33405 cells g-1 fresh weight of macroalgae. A total of 16 strains were isolated from field samples with subsequent polymerase chain reaction amplifications of rDNA, 5.8S rDNA and internal transcribed space regions; 13 strains (small cell morphotype) clustered in the O. cf. ovata Atlantic/Indian/Pacific clade; and 3 strains (large cell morphotype) clustered in the Ostreopsis lenticularis genotype from the type locality. The strains proved to be non-toxic. The presence of these genera/species represents a potential threat to marine ecosystems, and it is thus important to consider benthic species in the surveillance of harmful algae blooms in the reserve.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":"84 1","pages":"199-213"},"PeriodicalIF":1.4,"publicationDate":"2020-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43016074","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: 3

Predictive models of the preferential distribution of demersal fish larvae in the southern part of the California Current 加利福尼亚洋流南部底层鱼类幼虫优先分布的预测模型

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-09-04 DOI: 10.3989/scimar.04996.11a

M. T. Peiro-Alcantar, R. Funes-Rodríguez, R. Durazo, R. Martínez-Rincón, R. González-Armas, S. Hernández Trujillo

{"title":"Predictive models of the preferential distribution of demersal fish larvae in the southern part of the California Current","authors":"M. T. Peiro-Alcantar, R. Funes-Rodríguez, R. Durazo, R. Martínez-Rincón, R. González-Armas, S. Hernández Trujillo","doi":"10.3989/scimar.04996.11a","DOIUrl":"https://doi.org/10.3989/scimar.04996.11a","url":null,"abstract":"Habitat characterization provides predictive information about the distribution of species and is useful for assessing habitat quality and population stability. Larval abundance of six frequent and abundant demersal species and the relationship of each with the environment were analysed through generalized additive models to determine their preferential distribution and predictive response to the environmental variables in the southern part of the California Current (25-31°N) between two periods of data collection: 1997-2000 and 2006-2010. Essentially, the main associated variables governing the distribution patterns were related to common and oceanographic characteristics of the water column (temperature and salinity at 50 m depth, dynamic height and degree of water column stratification); however, the set of variables and their ranges are usually species-specific. Species of northern distribution, Sebastes sp. and Citharichtys stigmaeus, were recorded mainly in newly emerged, relatively unstratified waters characterized by a shallow mixed layer and low temperatures. Low dynamic height values were the most significant predictor of larval distribution for Merluccius productus. Citharichthys xanthostigma and Symphurus atricaudus were widespread, distributed across the study area mainly in autumn in unstratified or stratified waters and at a shallow mixed layer. Particularly C. Xanthostigma and S. Lucioceps were related to high dynamic height values, likely influenced by a coastal flow towards the pole, as evidenced by counter-currents.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":"84 1","pages":"253-261"},"PeriodicalIF":1.4,"publicationDate":"2020-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41589114","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

Potential biomass and distribution of octopus in the eastern part of the Campeche Bank (Yucatán, Mexico) 坎佩切河岸东部章鱼的潜在生物量和分布(Yucatán，墨西哥)

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-06-30 DOI: 10.3989/scimar.05007.01a

Otilio Avendaño, A. Hernández-Flores, I. Velázquez‐Abunader, C. Fernández-Jardón, A. Cuevas-Jiménez, Á. Guerra

{"title":"Potential biomass and distribution of octopus in the eastern part of the Campeche Bank (Yucatán, Mexico)","authors":"Otilio Avendaño, A. Hernández-Flores, I. Velázquez‐Abunader, C. Fernández-Jardón, A. Cuevas-Jiménez, Á. Guerra","doi":"10.3989/scimar.05007.01a","DOIUrl":"https://doi.org/10.3989/scimar.05007.01a","url":null,"abstract":"The octopus fishery on the Campeche Bank (Yucatan, Mexico) is considered the third largest in the world. In Yucatan, two fleets target this resource: an artisanal fleet and a semi-industrial fleet. The artisanal fleet only catches Octopus maya, while the semi-industrial fleet catches two species, O. Maya and O. “vulgaris” Type II, because it operates at deeper waters ( > 30 m). Since there is no information on the abundance of O. “vulgaris” Type II, management is based only on O. Maya. In order to generate information about the abundance of this species, four fishing research cruises were carried out in the northeastern area of the continental shelf off the Yucatan Peninsula. Four methods (a stratified random method, a swept area, geostatistics and a weighted swept area) were applied and compared to determine the instantaneous abundance and biomass of both species in the study area. The lowest potential biomass was calculated with the geostatistical method, with values between 18.5% and 36.7% lower than the other three methods. O. “vulgaris” Type II showed the lowest biomass (37.8±3.36 t) during May and July and the highest (189.56±11.6 t) in December. Our findings revealed that the total abundance of both species was similar in the study area, with a geographic overlap whose amplitude changed throughout the year according to the geographic position: O. Maya dominated at approximately 88°W, while O. “vulgaris” Type II dominated towards the southeast at 87°W.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":"84 1","pages":"1-10"},"PeriodicalIF":1.4,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48264989","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

Widespread demographic explosion of a non-indigenous hydrozoan on an oceanic island 海岛上一种非本土水生动物的大范围人口爆炸

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-05-28 DOI: 10.3989/scimar.04949.09a

F. Espino, F. Otero-Ferrer, N. E. Bosch, J. Coca, R. Haroun, F. Tuya

引用次数: 4

Atlantiphoxus wajapi n. gen., n. sp. (Crustacea: Amphipoda: Phoxocephalidae), a new deep-sea amphipod from the southwestern Atlantic Atlantiphoxus wajapi n.gen.，n.sp.（甲壳纲：两栖纲：Phoxocephalidae），一种来自西南大西洋的新型深海两栖动物

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-05-28 DOI: 10.3989/scimar.05001.16a

L. F. Andrade, A. Senna

引用次数: 3

Bathyal cumacean assemblages from the southern margin of the Cap Ferret Canyon (SE Bay of Biscay) 比斯开湾东南部雪貂角峡谷南缘的深海甲壳动物组合

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-05-28 DOI: 10.3989/scimar.05031.07a

J. Corbera, J. Sorbe

{"title":"Bathyal cumacean assemblages from the southern margin of the Cap Ferret Canyon (SE Bay of Biscay)","authors":"J. Corbera, J. Sorbe","doi":"10.3989/scimar.05031.07a","DOIUrl":"https://doi.org/10.3989/scimar.05031.07a","url":null,"abstract":"The structure of the cumacean assemblages from the southern margin of the Cap Ferret Canyon was studied at 13 stations ranging from 346 to 1099 m depth with a modified Macer-GIROQ suprabenthic sledge (four superimposed nets; 0.5 mm mesh size). A total of 1885 specimens were collected and classified into 5 families and 42 species. The total abundances fluctuated between 2.8 ind./100 m2 (station TS04; 484-485 m) and 55.8 ind./100 m2 (station TS08; 714-708 m). The highest values of species richness and diversity were recorded at station TS13 (1097-1099 m): S=25 species; H’(log2)=4.05. The near-bottom vertical distribution of the cumacean fauna showed the same pattern at all stations: at least 60% of the individuals were sampled by the lower net of the sledge and a drastic abundance decrease occurred between the two lowermost water layers sampled by the sledge. The multivariate analysis carried out on abundance data discriminated three main groups of stations distributed across depth (TS09 excluded): group Ia (346-485 m) characterized by the dominance of Nannastacidae (57.2%) at family level and Campylaspis sulcata, Leptostylis macrura at species level; group Ib (522-714 m) characterized by the dominance of Nannastacidae (66.1%) at family level and Campylaspis squamifera, C. laevigata and Leptostylis macrura at species level; and group II (790-1099 m) characterized by the dominance of Diastylidae (40.3%) at family level and Makrokylindrus (Adiastylis) josephinae, Leucon (Epileucon) pusillus and Diastyloides serratus at species level. According to this analysis, the main faunal change occurs between group I and II between 714 and 790 m, in relation to changes in the texture of surficial sediments. Although bathyal cumacean assemblages appear to be less abundant than those studied on continental shelves, they are significantly more diverse. However, such results could be in part related to the use of different sampling methods.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2020-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48964982","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

Feeding habits and population aspects of the spotted goatfish, Pseudupeneus maculatus (Perciformes: Mullidae), on the continental shelf of northeast Brazil 巴西东北部陆架斑点山山羊鱼的食性和种群特征

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-05-28 DOI: 10.3989/scimar.04958.24a

Andrey Soares, Alex Souza Lira, Júlio Guazzelli Gonzalez, Leandro Nolé Eduardo, F. Lucena‐Frédou, F. Le Loc’h, Beatrice Padovani Ferreira, T. Frédou

{"title":"Feeding habits and population aspects of the spotted goatfish, Pseudupeneus maculatus (Perciformes: Mullidae), on the continental shelf of northeast Brazil","authors":"Andrey Soares, Alex Souza Lira, Júlio Guazzelli Gonzalez, Leandro Nolé Eduardo, F. Lucena‐Frédou, F. Le Loc’h, Beatrice Padovani Ferreira, T. Frédou","doi":"10.3989/scimar.04958.24a","DOIUrl":"https://doi.org/10.3989/scimar.04958.24a","url":null,"abstract":"This study provides information about the feeding habits, population aspects and spatial distribution of the spotted goatfish, Pseudupeneus maculatus, along the coast of the tropical Brazilian continental shelf. Distribution patterns are described using length frequencies and catch rates. Stable isotope ratios of carbon (δ13C) and nitrogen (δ15N), along with stomach contents, were analysed to determine the diet of the spotted goatfish. Multivariate analysis and numerical indicators of the diet, such as numerical frequency, frequency of occurrence and weight percentage, were computed to evaluate the diet composition. The mean trophic position was defined using both stable isotope ratios and stomach content analysis. The length at first maturity for the species was determined as 13.7 cm. A slight pattern in size distribution was observed, with mean size increasing with depth along the shelf. The diet was mainly composed of crustaceans, teleosts and Polychaeta. No clear dietary difference was found between habitat types, water depth or latitude. Both trophic positions estimated by stable isotopes and stomach contents analysis ranged between levels 3 and 4. P. Maculatus was found to be feeding on many rare and infrequent prey items, classifying it as a generalist zoobenthivorous predator, probably due to its efficient search strategy.","PeriodicalId":21600,"journal":{"name":"Scientia Marina","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2020-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42243513","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: 3

Size overlap in intertidal decapod communities along the chilean coast 智利海岸潮间带十足目群落的大小重叠

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-05-28 DOI: 10.3989/scimar.04973.14a

P. R. De los Ríos-Escalante, G. Figueroa-Muñoz, M. Retamal, R. Vega-Aguayo, C. Esse

引用次数: 3

The ecological condition of vermetid platforms affects the cover of the alien seaweed Caulerpa cylindracea 蚯蚓平台的生态状况影响着外来海藻的覆盖

IF 1.4 4区生物学

Scientia Marina Pub Date : 2020-05-28 DOI: 10.3989/scimar.04984.06a

M. Terradas-Fernández, Miguel Valverde-Urrea, N. Casado-Coy, C. Sanz-Lazaro

引用次数: 4