Botanica Marina最新文献

{"title":"A new species of Craspedostauros (Bacillariophyceae) from the west coast of Sweden, with taxonomic and ecological notes on Craspedostauros laevissimus","authors":"Adil Y. Al-Handal, Matt P. Ashworth, Angela Wulff","doi":"10.1515/bot-2023-0065","DOIUrl":"https://doi.org/10.1515/bot-2023-0065","url":null,"abstract":"Since its separation from <jats:italic>Stauroneis</jats:italic> in 1999, several new species of <jats:italic>Craspedostauros</jats:italic> were discovered in a variety of habitats and geographic locations, adding morphological and phylogenetic data to the investigations of the genus. In a survey of littoral diatoms of Sweden, both on the west and east coasts, two epiphytic stauros-bearing species were encountered and assigned to <jats:italic>Craspedostauros</jats:italic> following the characteristic features of this genus, including the possession of a stauros narrower than the central area and cribrate areolae. One species is described as new to science; <jats:italic>Craspedostauros lateralis</jats:italic> sp. nov., and the other is of uncertain identity but bears morphological similarity to <jats:italic>C. laevissimus</jats:italic>. <jats:italic>Caspedostauros lateralis</jats:italic> is a marine epiphytic species found in the west coast of Sweden, off Gothenburg city. Based on light and electron microscopy, a detailed description of the morphological and ultrastructural features of these species is given and a comparison of the distinguishing characters with allied species is discussed. Some ecological data and the occurrence of associated species on the host macrophyte are provided.","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139104868","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}

{"title":"Seasonal and culture period variations in the lipid and fatty acid content of Ulva lactuca cultivated in Mikhmoret onshore (Israel)","authors":"Nabeel Gnayem, Razan Unis, Rima Gnaim, Alexander Chemodanov, Álvaro Israel, Jallal Gnaim, Alexander Golberg","doi":"10.1515/bot-2023-0027","DOIUrl":"https://doi.org/10.1515/bot-2023-0027","url":null,"abstract":"The use of high-value fatty acids (FA), omega-3 (<jats:italic>n</jats:italic>-3), and omega-6 (<jats:italic>n</jats:italic>-6) from seaweed could relieve the pressure from natural wild fish sources and reduce overfishing worldwide. This research is designed to explore how the harvest season (winter, spring, and summer) and culture period influence the biomass production yield, lipid content, and FA composition in the green seaweed <jats:italic>Ulva</jats:italic> sp. The studied seaweed was grown in plastic sleeves with flowthrough seawater in Mikhmoret (East Mediterranean, Israel) from July 2019 to December 2020. The <jats:italic>Ulva</jats:italic> species was identified as <jats:italic>Ulva lactuca</jats:italic> Linnaeus by DNA barcoding using <jats:italic>rbc</jats:italic>L, ITS, and <jats:italic>tuf</jats:italic>A markers. No detectable genetic variability in <jats:italic>U. lactuca</jats:italic> samples was found throughout the research period. A quantitative examination of the lipid and FA content in <jats:italic>U. lactuca</jats:italic> in different harvest seasons revealed that the maximum content of lipids was in the summer, and that of polyunsaturated fatty acids (PUFAs) was in the winter. The PUFA profile included eicosapentaenoic acid, docosapentaenoic acid, docosahexaenoic acid, <jats:italic>n</jats:italic>-3, and <jats:italic>n</jats:italic>-6, where the <jats:italic>n</jats:italic>-6/<jats:italic>n</jats:italic>-3 ratio was comparable with the desired range for a balanced nutritional diet.","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139104906","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}

{"title":"Gayralia brasiliensis Pellizzari M.C. Oliveira et N.S. Yokoya (Gayraliaceae Ulotrichales): a new record for Indian waters based on morphological and molecular analysis","authors":"Monica Gajanan Kavale, Mudassar Anisoddin Kazi, Kanchan Udata","doi":"10.1515/bot-2023-0050","DOIUrl":"https://doi.org/10.1515/bot-2023-0050","url":null,"abstract":"<jats:italic>Gayralia brasiliensis</jats:italic> Pellizzari, M.C. Oliveira <jats:italic>et</jats:italic> N.S. Yokoya (Gayraliaceae Ulotrichales), a new record for Indian waters, is described based on morphological, anatomical, and molecular characterization. <jats:italic>Gayralia brasiliensis</jats:italic> was growing luxuriantly towards the upper limit of the intertidal zone at Shirgaon Creek, Maharashtra, west coast of India. The thalli were pale green in color, growing mat-like on muddy substrata. Juvenile thalli were attached to pneumatophores of mangroves, and barnacles, as well as on polyethylene sheets through a rhizoidal disc. The molecular characterization verifies the presence of <jats:italic>G</jats:italic>. <jats:italic>brasiliensis</jats:italic> in western India. We observed overlapping morphological traits between <jats:italic>G</jats:italic>. <jats:italic>brasiliensis</jats:italic> and <jats:italic>G</jats:italic>. <jats:italic>oxysperma</jats:italic>. However, the ITS sequence showed 100 % similarity with no nucleotide divergence to Brazilian <jats:italic>G</jats:italic>. <jats:italic>brasiliensis</jats:italic>. The phylogenetic analysis based on ITS rDNA sequence showed that <jats:italic>G</jats:italic>. <jats:italic>brasiliensis</jats:italic> from Shirgaon Creek forms a sister lineage to <jats:italic>G. oxysperma</jats:italic>.","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139054980","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}

{"title":"Reviewer acknowledgement Botanica Marina volume 66 (2023)","authors":"","doi":"10.1515/bot-2023-0104","DOIUrl":"https://doi.org/10.1515/bot-2023-0104","url":null,"abstract":"","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139157013","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}

{"title":"Morphology, molecular phylogeny and toxicity of Fukuyoa paulensis (Dinophyceae) from the Bay of Bengal, North Indian Ocean","authors":"Oyeshina G. Oyeku, Subir K. Mandal","doi":"10.1515/bot-2023-0023","DOIUrl":"https://doi.org/10.1515/bot-2023-0023","url":null,"abstract":"<jats:italic>Fukuyoa</jats:italic> species are potential producers of polyether neurotoxins that are toxic to aquatic biota and humans. A strain of <jats:italic>Fukuyoa</jats:italic> (CSIRCSMCRI 004) was isolated from India’s Bay of Bengal coast. The clonal culture was identified using light and scanning electron microscopy and molecular phylogenetic analysis of the LSU rRNA gene and ITS (ITS1-5.8S gene-ITS2) sequences. Its toxicity was assessed using a 48 h <jats:italic>Artemia</jats:italic> bioassay. The morphological features observed included globular shape, descending cingular displacement, broad pentagonal 1′ plate, and large second apical plate (2′). The identity of the strain was confirmed to be <jats:italic>F. paulensis</jats:italic> based on the LSU rRNA gene and ITS sequences phylogenies. Strain CSIRCSMCRI 004 shared an identical sequence with the type strain of <jats:italic>F. paulensis</jats:italic> and other strains reported from different locations, based on the LSU rRNA gene and ITS sequences phylogenies. Exposure of brine shrimp larvae to its cellular lysate resulted in lethality (48 h LC<jats:sub>50</jats:sub> = 0.256 mg ml<jats:sup>−1</jats:sup>) and behavioral abnormalities<jats:italic>.</jats:italic> The current study provides the first evidence of <jats:italic>F. paulensis</jats:italic> in the Bay of Bengal. It also reveals that CSIRCSMCRI 004 is toxic to susceptible biota like the brine shrimp and could produce ciguatera-associated toxins. The findings of this study highlight the need for sampling and screening of ciguatera-related species in the Bay of Bengal region to understand the associated public and environmental health risks.","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138520544","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}

{"title":"Vertical distribution of brown and red macroalgae along the central Western Antarctic Peninsula","authors":"Charles D. Amsler, Margaret O. Amsler, Sabrina Heiser, James B. McClintock, Katrin Iken, Aaron W. E. Galloway, Andrew G. Klein","doi":"10.1515/bot-2023-0085","DOIUrl":"https://doi.org/10.1515/bot-2023-0085","url":null,"abstract":"Fleshy macroalgae dominate the hard bottom, shallow waters along the Western Antarctic Peninsula (WAP). Although there are numerous reports on their ecology, geographic distribution, and to a lesser extent, vertical (depth) distribution in the northern portions of the WAP, much less is known farther south along the central portion of the WAP. Here we provide the first report of the vertical distributions of brown and red fleshy macroalgae in this region based on scuba-derived collections at 14 study sites between southern Anvers Island (64.8°S, 64.4°W) in the north and central Marguerite Bay (68.7°S, 67.5°W) in the south. Although several overstory brown macroalgal species that can be common along the northern WAP including <jats:italic>Desmarestia anceps</jats:italic> and <jats:italic>Cystosphaera jacquinotii</jats:italic> are mostly absent from the central WAP, the vertical distributions of the brown macroalgae <jats:italic>Desmarestia menziesii</jats:italic> and <jats:italic>Himantothallus grandifolius</jats:italic> are similar to the northern WAP even though their percent cover is much lower. Likewise, the vertical distribution of the 14 most widespread red macroalgae, where they occur, mirrored those known from the northern part of the WAP even though macroalgal cover, biomass, and total species richness declined markedly to the south across this region due to increasing sea ice concentrations.","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138520523","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}

{"title":"Long-term unialgal seaweed cultivation in artificial seawater without water change. I. Laboratory investigations of Ulva","authors":"Klaus Lüning","doi":"10.1515/bot-2023-0051","DOIUrl":"https://doi.org/10.1515/bot-2023-0051","url":null,"abstract":"Unialgal stock cultures for seeding the tank water can be used for the mass cultivation of seaweeds in artificial seawater, as in microalgal mass cultivation. High costs for artificial sea salt mixtures and distilled water would be required, however, to use artificial seawater in big tanks for commercial purposes, but frequent medium changes may not be required, since the major ions contained in artificial seawater, such as sodium, will barely be utilised by the cultured algae during long periods of time, even over years. Similar growth rates were obtained at the start and end of an experiment conducted with <jats:italic>Ulva pseudocurvata</jats:italic> cultivated unialgally for two years without water change, at a low algal density and with weekly addition of Provasoli Enrichment. Growth in this experiment was increasingly impeded due to gamete swarming events causing dark greenish water every few weeks. The experimental water had then to be boiled in order to kill the gametes. In a second experiment, this time performed at a high algal density, maximum yield values were 20–30 g fresh weight m<jats:sup>−2</jats:sup> d<jats:sup>−1</jats:sup>, both for 2-year-old and newly prepared artificial seawater. These results verified the hypothesis that long-term <jats:italic>Ulva</jats:italic> cultivation in artificial seawater is possible without frequent medium changes.","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138520517","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}

{"title":"Assessing fungi in Portuguese marine environments: how many species?","authors":"Egídia Azevedo, Margarida Barata, Maria Filomena Caeiro","doi":"10.1515/bot-2022-0078","DOIUrl":"https://doi.org/10.1515/bot-2022-0078","url":null,"abstract":"Abstract The present review documents the diversity of marine fungi collected in Portuguese marine environments (sandy beaches, salt marshes and marinas) from studies over the past 30 years and results from new data. One hundred and ninety fungal species are reported (mainly identified by morphology, with 63 species at the same time identified by molecular approaches), of which 156 are currently listed as marine fungi in www.marinefungi.org . Twenty-two new species are exclusive to Portugal. Substratum specificity was observed in Portugal for 77 marine species but reduced to 26 considering the occurrence on multiple substrata for some of these species reported in other parts of the world. Worldwide data also confirmed a core group of more than 20 generalist marine fungi, which colonized the different categories of substrata (woody, herbaceous, and other marine sources). Most marine species are exclusively saprobes (100) or saprobe/parasite/pathogen (27). Temperate (85) and cosmopolitan (45) species are dominant, but some species were also found in tropical or tropical/subtropical regions (7 and 4, respectively). Ascomycota species were the dominant group (184), mostly as asexual morphs (120); with few Basidiomycota (5 species) and Mucoromycota (1 species). Acrostalagmus luteoalbus , Cladosporium tenuissimum , Nigrospora sphaerica , Scedosporium boydii , Stemphylium vesicarium , and Trichoderma lixii are new records for Portugal. Other species were isolated in Portugal for the first time on new substrata: Stachybotrys chartarum (from seawater), Corollospora maritima and Zalerion maritima (from sand), and Lulworthia cf. purpurea (from a drift culm).","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135091950","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}

{"title":"The use of macroalgal hydrolysate as a carbon source in the lipid production of the marine heterotrophic dinoflagellate <i>Crypthecodinium</i> AL–05","authors":"Mohamed A. Abdel-Wahab, Abdallah M. Elgorban, Ali H. Bahkali","doi":"10.1515/bot-2023-0016","DOIUrl":"https://doi.org/10.1515/bot-2023-0016","url":null,"abstract":"Abstract Crypthecodinium cohnii strains can accumulate significant amounts of lipids with a high fraction of docosahexaenoic acid that is used in pharmaceutical and nutraceutical applications. In this study, macroalgal hydrolysate was used as a low-cost carbon source for the growth of the oleaginous strain Crypthecodinium sp. AL–05 to reduce the cost of its growth and lipid production. The Saudi strain was placed in the genus Crypthecodinium with high statistical support based on the sequences of three concatenated genes (SSU, ITS, and LSU rDNA). Crypthecodinium sp. AL-05 was grown on four different glucose concentrations and three different macroalgal hydrolysate concentrations: 20, 40, and 80 g l −1 . We also used the same concentrations of macroalgal hydrolysate with 10 g l −1 of four carbon sources: acetic acid, glycerol, glucose, and sugarcane molasses. Glucose (40 g l −1 ) gave the best results, followed by 80 g l −1 macroalgae alone and with glucose or molasses. One-way ANOVA followed by a Bonferroni correction post-hoc test showed that the dry weight of Crypthecodinium sp. AL–05 produced using the following carbon sources: the four concentrations of the pure glucose, 80 g l −1 macroalgae alone, 40 and 80 g l −1 macroalgae + glucose, 40 and 80 g l 1 macroalgae + molasses were significantly higher than the other 10 carbon sources tested. Three carbon sources (20 g l −1 macroalgae with glucose, molasses and acetic acid) produced percentages of lipids that were significantly lower than the other 16 carbon sources. For the first time, our research shows that the dinoflagellate Crypthecodinium AL–05 can be successfully grown on macroalgal hydrolysate, which can be used in industrial processes. Importantly, Crypthecodinium sp. AL–05 grown on 80 g l −1 macroalgae produced only saturated fatty acids, of which caprylic acid represented 43.45 % of the total fatty acids. Caprylic acid is widely used in industry and pharmaceuticals and the Saudi isolate can be used for its commercial production using macroalgae as a carbon source.","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135476371","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}

{"title":"<i>Laurencia mediterranea</i> sp. nov. (Ceramiales, Rhodophyta) from the central Mediterranean Sea","authors":"Angela G. Bartolo, Gabrielle Zammit, Eleni Kytinou, Frithjof Christian Küpper","doi":"10.1515/bot-2023-0028","DOIUrl":"https://doi.org/10.1515/bot-2023-0028","url":null,"abstract":"Abstract The identification of macroalgal species within the Laurencia complex is challenging, due to the presence of inconspicuous morphological characters, extensive variation in these traits and a diverse biogeography. Moreover, for a number of these species, no DNA sequence data are available in online databases. For this study, five algal specimens, tentatively assigned to Laurencia , were collected from Malta in the central Mediterranean Sea and studied using an integrative systematics approach. An analysis of the data resulted in the description of a new species, Laurencia mediterranea using combined morphological and molecular criteria, including COI-5P and rbc L. Morphologically L. mediterranea sp. nov. was distinct from other Laurencia spp. in the type of holdfast, the colour and shape of the thallus, the presence of secondary pit connections, lenticular thickenings and ‘corps en cerise’ . Moreover, a new genetic species cluster indicated a separate taxon at the species level. Our study demonstrates that genetic sequences having clear links to sample metadata and digital herbaria are indispensable for macroalgal biodiversity research. This approach could offer a solution for algal taxonomy in cases where biogeography is important and limited sequence data exist in online DNA libraries.","PeriodicalId":9191,"journal":{"name":"Botanica Marina","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135432467","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}