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  • 1
    Online Resource
    Online Resource
    Elektrolyteinfluss auf Flüssig-Flüssig-Gleichgewichte für Extraktionsprozesse : Schlussbericht zu dem IGF-Vorhaben der Forschungsstellen TU Dortmund (2016)
    Dortmund : TU Dortmund
    Details Availability
    Keywords: Forschungsbericht ; Flüssig-Flüssig-Extraktion ; Phasengleichgewicht ; Salzeffekt ; Elektrolyt
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (64 Seiten, 3,95 MB) , Diagramme
    URL: https://edocs.tib.eu/files/e01fn17/880385855.pdf
    Language: German
    Note: Förderkennzeichen AIF 17114 N , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 2
    Online Resource
    Online Resource
    [Simulation und Vorhersage des Einflusses von Salzen und Osmolyten auf biologische Systeme] : [geförderte Gesamtdauer vom 01.01.2010 bis zum 29.02.2012] (2012)
    Dortmund [u.a.]
    Details Availability
    Keywords: Forschungsbericht ; Salzstress ; Osmolarität
    Type of Medium: Online Resource
    Pages: Online-Ressource (80 S., 3,43 MB) , Ill., graph. Darst.
    URL: https://edocs.tib.eu/files/e01fn12/729539938.pdf
    URL: https://edocs.tib.eu/files/e01fn12/729539938l.pdf
    Language: German
    Note: Förderkennzeichen AIF 16295 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Auch als gedr. Ausg. vorhanden , Systemvoraussetzungen: Acrobat reader. , Ohne Titelblatt
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  • 3
    Online Resource
    Online Resource
    Phylogeography and Population Genetics in Crustacea. (2011)
    Milton :Taylor & Francis Group,
    Details
    Keywords: Crustacea -- Variation. ; Electronic books.
    Description / Table of Contents: This book offers practical insights for the study of intraspecific genetic variation in crustaceans. Combining theory and case studies, it helps researchers select methods of analysis and interpret their results. The theory chapters discuss the potential of currently used and upcoming molecular markers in the context of marine non-model species. Case studies of marine and limnic crustaceans highlight the importance and diversity of sources of population structure in intraspecific variation. Throughout, the book showcases the use and analysis of molecular markers, including mitochondrial and nuclear DNA sequence data, coding and non-coding sequences, microsatellites, and cytogenetics.
    Type of Medium: Online Resource
    Pages: 1 online resource (397 pages)
    Edition: 1st ed.
    ISBN: 9781439840740
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=830226
    DDC: 595.3
    Language: English
    Note: Front Cover -- Contents -- Preface -- Part I: Analyses of Population Genetics: Guidelines and Developments -- Analyzing intraspecific genetic variation: a practical guide using mitochondrial DNA and microsatellites -- Detecting and measuring genetic differentiation -- Rethinking the mechanisms that shape marine decapod population structure -- Causes of chaos: spatial and temporal genetic heterogeneity in the intertidal anomuran crab Petrolisthes cinctipes -- Part II: Population Genetics and Phylogeography of Marine Crustaceans -- Comparative phylogeography of Indo-West Pacific intertidal barnacles -- Evolution and conservation of marine biodiversity in the Coral Triangle: insights from stomatopod Crustacea -- Comparative phylogeography of three achelate lobster species from Macaronesia (northeast Atlantic) -- Genetic variation and differentiation of Fenneropenaeus merguiensis in theThai Peninsula -- Population genetics in the rocky shore crab Pachygrapsus marmoratus from the western Mediterranean and eastern Atlantic: complementary results from mtDNA and microsatellites at different geographic scales -- Part III: Population Genetics and Phylogeography of Liminic Crustaceans -- The history of the Daphnia pulex complex: asexuality, hybridization, and polyploidy -- Phylogeographic patterns in Artemia: a model organism for hypersaline crustaceans -- Intraspecific geographic differentiation and patterns of endemism in freshwater shrimp species flocks in ancient lakes of Sulawesi -- Molecular and conservation biogeography of freshwater caridean shrimps in north-western Australia -- Comparing phylogeographic patterns across the Patagonian Andes in two freshwater crabs of the genus Aegla (Decapoda: Aeglidae). , Molecular diversity of river versus lake freshwater anomurans in southern Chile (Decapoda: Aeglidae) and morphometric differentiation between species and sexes -- Population structure of two crayfish with diverse physiological requirements -- Shallow phylogeographic structure of Puerto Rico freshwater crabs: an evolutionary explanation for low species diversity compared to Jamaica -- Contributors -- Color insert.
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  • 4
    Electronic Resource
    Electronic Resource
    Furcarcturus polarsterni gen. nov., sp. nov., a large deep-sea arcturid isopod from the Drake Passage, with a preliminary molecular characterization (2000)
    Springer
    Polar biology 23 (2000), S. 833-839 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new arcturid species of unusual size (〉 6 cm) is described from a locality in the Drake Passage at 3720 m depth. Due to the unique combination of characters found in these isopods, the new genus Furcarcturus is proposed. Sequences of the 16S rRNA gene obtained from eight species indicate that the new species does not belong to groups of species currently placed in the genera Antarcturus and Chaetarcturus. More sequences are needed to corroborate arcturid phlylogeny.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003000000160
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    Paper (German National Licenses)
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  • 5
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    Gene expression profiling in gills of the great spider crab Hyas araneus in response to ocean acidification and warming (2014)
    BioMed Central
    In:  BMC Genomics, 15 (1). p. 789.
    Details
    Publication Date: 2020-06-15
    Description: Background: Hypercapnia and elevated temperatures resulting from climate change may have adverse consequences for many marine organisms. While diverse physiological and ecological effects have been identified, changes in those molecular mechanisms, which shape the physiological phenotype of a species and limit its capacity to compensate, remain poorly understood. Here, we use global gene expression profiling through RNA-Sequencing to study the transcriptional responses to ocean acidification and warming in gills of the boreal spider crab Hyas araneus exposed medium-term (10 weeks) to intermediate (1,120 μatm) and high (1,960 μatm) PCO2 at different temperatures (5°C and 10°C). Results: The analyses reveal shifts in steady state gene expression from control to intermediate and from intermediate to high CO2 exposures. At 5°C acid–base, energy metabolism and stress response related genes were upregulated at intermediate PCO2, whereas high PCO2 induced a relative reduction in expression to levels closer to controls. A similar pattern was found at elevated temperature (10°C). There was a strong coordination between acid–base, metabolic and stress-related processes. Hemolymph parameters at intermediate PCO2 indicate enhanced capacity in acid–base compensation potentially supported by upregulation of a V-ATPase. The likely enhanced energy demand might be met by the upregulation of the electron transport system (ETS), but may lead to increased oxidative stress reflected in upregulated antioxidant defense transcripts. These mechanisms were attenuated by high PCO2, possibly as a result of limited acid–base compensation and metabolic down-regulation. Conclusion: Our findings indicate a PCO2 dependent threshold beyond which compensation by acclimation fails progressively. They also indicate a limited ability of this stenoecious crustacean to compensate for the effects of ocean acidification with and without concomitant warming.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1186/1471-2164-15-789
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  • 6
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    Characterization and analysis of a transcriptome from the boreal spider crab Hyas araneus (2013)
    Elsevier
    In:  Comparative Biochemistry and Physiology Part D: Genomics and Proteomics, 8 (4). pp. 344-351.
    Details
    Publication Date: 2020-07-27
    Description: Research investigating the genetic basis of physiological responses has significantly broadened our understanding of the mechanisms underlying organismic response to environmental change. However, genomic data are currently available for few taxa only, thus excluding physiological model species from this approach. In this study we report the transcriptome of the model organism Hyas araneus from Spitsbergen (Arctic). We generated 20,479 transcripts, using the 454 GS FLX sequencing technology in combination with an Illumina HiSeq sequencing approach. Annotation by Blastx revealed 7159 blast hits in the NCBI non-redundant protein database. The comparison between the spider crab H. araneus transcriptome and EST libraries of the European lobster Homarus americanus and the porcelain crab Petrolisthes cinctipes yielded 3229/2581 sequences with a significant hit, respectively. The clustering by the Markov Clustering Algorithm (MCL) revealed a common core of 1710 clusters present in all three species and 5903 unique clusters for H. araneus. The combined sequencing approaches generated transcripts that will greatly expand the limited genomic data available for crustaceans. We introduce the MCL clustering for transcriptome comparisons as a simple approach to estimate similarities between transcriptomic libraries of different size and quality and to analyze homologies within the selected group of species. In particular, we identified a large variety of reverse transcriptase (RT) sequences not only in the H. araneus transcriptome and other decapod crustaceans, but also sea urchin, supporting the hypothesis of a heritable, anti-viral immunity and the proposed viral fragment integration by host-derived RTs in marine invertebrates.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.cbd.2013.09.004
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
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    Population genetic differentiation of the ubiquitous brooding coral Pocillopora acuta along Phuket Island reefs in the Andaman Sea, Thailand (2023)
    Springer
    Details
    Publication Date: 2024-02-07
    Description: Background: The widespread Indo-Pacific coral species Pocillopora acuta Lamarck, 1816 displays varying levels of asexual versus sexual reproduction, with strong repercussions on genetic diversity, connectivity and genetic structuring within and among populations. For many geographic regions, baseline information on genetic diversity is still lacking, particularly in the Andaman Sea. The region suffered a massive heat-induced bleaching event in 2010 with high coral cover loss of branching coral species such as P. acuta. A subsequent bleaching in 2016, however, revealed a mild bleaching response in pocilloporids compared to other coral taxa in the region, suggesting that rare, heat tolerant genotypes had been selected by the 2010 bleaching event. In order to test whether this potential ‘evolutionary rescue’ event has led to a low genetic diversity, we conducted a population genetic survey covering a total of nine different P. acuta populations (336 individuals) along a 50 km coastal stretch around Phuket Island, Thailand. We used six microsatellite markers to assess genotypic diversity and to determine the prevalent mode of reproduction (i.e. sexual or asexual recruitment). Results: In contrast to other Indian Ocean P. acuta populations, the majority of corals in this study adopted a sexual reproduction mode (75% across all populations). At the same time, substantial regional gene flow was observed around Phuket Island with strong genetic differentiation as indicated by three genetic clusters that were separated by only a few kilometers. Patterns of isolation by distance over 0.7 – 40 km suggest small-scale genetic barriers, such as changing currents throughout each monsoonal season, potentially contributing to locally restricted dispersal of P. acuta larvae. Conclusions: The occurrence of distinct genetic clusters within short coastal stretches suggests that the 2010 bleaching event has not led to extreme genetic impoverishment. While more in-depth genomic analyses are necessary to investigate changes in genetic diversity following extreme bleaching events, our results will help guide conservation efforts to maintain genetic diversity of a coral species that likely will be dominant in future, warmer Andaman Sea reefs.
    Type: Article , PeerReviewed
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  • 8
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    Ontogenetic differences in the response of the cold-water coral Caryophyllia huinayensis to ocean acidification, warming and food availability (2023)
    Elsevier
    Details
    Publication Date: 2024-02-07
    Description: Cold-water corals (CWCs) are considered vulnerable to environmental changes. However, previous studies have focused on adult CWCs and mainly investigated the short-term effects of single stressors. So far, the effects of environmental changes on different CWC life stages are unknown, both for single and multiple stressors and over long time periods. Therefore, we conducted a six-month aquarium experiment with three life stages of Caryophyllia huinayensis to study their physiological response (survival, somatic growth, calcification and respiration) to the interactive effects of aragonite saturation (0.8 and 2.5), temperature (11 and 15 °C) and food availability (8 and 87 μg C L−1). The response clearly differed between life stages and measured traits. Elevated temperature and reduced feeding had the greatest effects, pushing the corals to their physiological limits. Highest mortality was observed in adult corals, while calcification rates decreased the most in juveniles. We observed a three-month delay in response, presumably because energy reserves declined, suggesting that short-term experiments overestimate coral resilience. Elevated summer temperatures and reduced food supply are likely to have the greatest impact on live CWCs in the future, leading to reduced coral growth and population shifts due to delayed juvenile maturation and high adult mortality.
    Type: Article , PeerReviewed
    Format: text
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  • 9
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    Dominance of the coral Pocillopora acuta around Phuket Island in the Andaman Sea, Thailand (2023)
    Wiley
    Details
    Publication Date: 2024-02-07
    Description: Pocillopora damicornis (Linnaeus, 1758), a species complex, consists of several genetic lineages, some of which likely represent reproductively isolated species, including the species Pocillopora acuta Lamarck, 1816. Pocillopora acuta can exhibit similar morphological characteristics as P. damicornis, thus making it difficult to identify species-level taxonomic units. To determine whether the P. damicornis-like colonies on the reefs in the Andaman Sea (previously often identified as P. damicornis) consist of different species, we sampled individual colonies at five sites along a 50 km coastal stretch at Phuket Island and four island sites towards Krabi Province, Thailand. We sequenced 210 coral samples for the mitochondrial open reading frame and identified six distinct haplotypes, all belonging to P. acuta according to the literature. Recently, P. acuta was observed to efficiently recolonize heat-damaged reefs in Thailand as well as globally, making it a potentially important coral species in future reefs. Specifically in the light of global change, this study underscores the importance of high-resolution molecular species recognition, since taxonomic units are important factors for population genetic studies, and the latter are crucial for management and conservation efforts.
    Type: Article , PeerReviewed
    Format: text
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  • 10
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    Morphological and genetic data from Cnemidocarpa verrucosa sensu lato (2019)
    PANGAEA
    In:  Supplement to: Ruiz, Micaela Belen; Taverna, Anabela; Servetto, Natalia; Sahade, Ricardo José; Held, Christoph (2020): Hidden diversity in Antarctica: Molecular and morphological evidence of two different species within one of the most conspicuous ascidian species. Ecology and Evolution, https://doi.org/10.1002/ece3.6504
    Details
    Publication Date: 2023-03-07
    Description: The Southern Ocean is one of the most isolated marine ecosystems, characterized by high levels of endemism, diversity and biomass. Ascidians are among the dominant groups in the Antarctic benthic communities, thus recording the evolutionary patterns of this group is crucial to improve our current understanding on the assembly of this polar ocean. In this study, we studied the genetic variation within Cnemidocarpa verrucosa sensu lato, one of the most widely distributed and abundant ascidians in Antarctica. Using a mitochondrial and a nuclear gene (mtCOI and 18S), the phylogeography of fifteen populations distributed along the Antarctic Peninsula and South America (Burdwood Bank/MPA Namuncurá) was characterized, where the bimodal distribution of the genetic distance suggested the existence of two species within the nominal C. verrucosa. When re-evaluating morphological traits to distinguish between genetically defined species, the presence of basal disc in one of the genotypes allowed to differentiate the species.
    Keywords: Branchial formula; Carlini_Base; Cnemidocarpa verrucosa, height; Cnemidocarpa verrucosa, number of gonads; Cnemidocarpa verrucosa, number of stomach folds; Cnemidocarpa verrucosa, width; Color description; DEPTH, water; Number; Potter Peninsula, King George Island, Western Antarctica; Presence/absence; Research station; RS; Sample ID; Shape; Siphon, position; Species, genetic
    Type: Dataset
    Format: text/tab-separated-values, 288 data points
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