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  • 1
    Online Resource
    Online Resource
    Dordrecht :Springer Netherlands,
    Keywords: Invertebrates. ; Electronic books.
    Description / Table of Contents: This volume provides an identification key for the ephyrae of 18 common scyphozoan species, documents the Mediterranean-wide bloom of the invasive ctenophore Mnemiopsis leidyi, and addresses the direct effects of ocean acidification on jellyfish.
    Type of Medium: Online Resource
    Pages: 1 online resource (232 pages)
    Edition: 1st ed.
    ISBN: 9789048195411
    Series Statement: Developments in Hydrobiology Series ; v.212
    DDC: 333.7
    Language: English
    Note: Intro -- Contents -- Preface -- Identification key for young ephyrae: a first step for early detection of jellyfish blooms -- Blooms of the invasive ctenophore, Mnemiopsis leidyi, span the Mediterranean Sea in 2009 -- Effects of pH on asexual reproduction and statolith formation of the scyphozoan, Aurelia labiata -- Effects of low salinity on settlement and strobilation of Scyphozoa (Cnidaria): Is the lion's mane Cyanea capillata (L.) able to reproduce in the brackish Baltic Sea? -- Effects of El Niño-driven environmental variability on black turtle migration to Peruvian foraging grounds -- Recurrence of bloom-forming scyphomedusae: wavelet analysis of a 200-year time series -- Behavior of Nemopsis bachei L. Agassiz, 1849 medusae in the presence of physical gradients and biological thin layers -- Avoidance of hydrodynamically mixed environments by Mnemiopsis leidyi (Ctenophora: Lobata) in open-sea populations from Patagonia, Argentina -- Response of Chrysaora quinquecirrha medusae to low temperature -- Use of respiration rates of scyphozoan jellyfish to estimate their effects on the food web -- Planktonic cnidarian distribution and feeding of Pelagia noctiluca in the NW Mediterranean Sea -- Bioenergetics and growth in the ctenophore Pleurobrachia pileus -- Degradation of the Adriatic medusa Aurelia sp. by ambient bacteria -- Identification of jellyfish from Continuous Plankton Recorder samples -- Separation and analysis of different types of nematocysts from Cyanea capillata (L.) medusae -- Characterisation of neurotoxic polypeptides from Cyanea capillata medusae (Scyphozoa) -- Gill cell toxicity of northern boreal scyphomedusae Cyanea capillata and Aurelia aurita measured by an in vitro cell assay.
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  • 2
    Keywords: Jellyfish blooms Congresses ; Aufsatzsammlung ; Meduse ; Massenvermehrung ; Demökologie ; Meduse ; Nahrungskette ; Meduse ; Nesselzelle ; Toxizität
    Type of Medium: Book
    Pages: 234 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9789048195404
    Series Statement: Developments in Hydrobiology 212
    DDC: 593.5/3
    Language: English
    Note: Literaturangaben , "Previously published in Hydrobiologia, Volume 645, 2010" - Titelblatt
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Aquaculture research 34 (2003), S. 0 
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A field study was carried out to assess the use of the bottom-feeding grey mullet (Mugil cephalus) within benthic enclosures as a means to reduce the benthic impacts of a net cage fish farm in the Gulf of Aqaba, Red Sea. Five experimental 1-m3 net-cage enclosures were stocked with 12 grey mullets each (fish weights 50, 70 or 144 g). The enclosures had no bottom and the mullets had access to the enclosed organically enriched sediments and to particulate matter (PM) falling from the overlying cages. Sediment traps were used to quantify and qualify the PM falling from the fish farm to the sea floor. Simultaneously, a feeding trial was performed with mullets (50 and 70 g) in experimental tanks. In order to estimate the potential growth rate and to quantify energy and protein requirements, the fish were fed a formulated diet with known composition. After approximately 70 days at sea, mullets in the enclosures had used up all the available food in the sediment and gained up to 0.78 g day−1 fish−1. Applying the values for energy and protein requirements for maintenance and growth derived from the experimental trial, estimates indicated that the grey mullets effectively removed 4.2 g organic carbon, 0.70 g nitrogen and 7.5 mg phosphorus kg−1 mullet m−2 day−1 from the organically enriched sediment. Thus deployment of grey mullets may be an efficient means to improve the quality of sediments below intensive net-cage fish farms.
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 2014-11-06
    Description: Gelatinous zooplankton outbreaks have increased globally owing to a number of human-mediated factors, including food web alterations and species introductions. The invasive ctenophore Mnemiopsis leidyi entered the Black Sea in the early 1980s. The invasion was followed by the Azov, Caspian, Baltic and North Seas, and, most recently, the Mediterranean Sea. Previous studies identified two distinct invasion pathways of M. leidyi from its native range in the western Atlantic Ocean to Eurasia. However, the source of newly established populations in the Mediterranean Sea remains unclear. Here we build upon our previous study and investigate sequence variation in both mitochondrial (Cytochrome c Oxidase subunit I) and nuclear (Internal Transcribed Spacer) markers in M. leidyi, encompassing five native and 11 introduced populations, including four from the Mediterranean Sea. Extant genetic diversity in Mediterranean populations (n = 8, Na = 10) preclude the occurrence of a severe genetic bottleneck or founder effects in the initial colonizing population. Our mitochondrial and nuclear marker surveys revealed two possible pathways of introduction into Mediterranean Sea. In total, 17 haplotypes and 18 alleles were recovered from all surveyed populations. Haplotype and allelic diversity of Mediterranean populations were comparable to populations from which they were likely drawn. The distribution of genetic diversity and pattern of genetic differentiation suggest initial colonization of the Mediterranean from the Black-Azov Seas (pairwise FST = 0.001–0.028). However, some haplotypes and alleles from the Mediterranean Sea were not detected from the well-sampled Black Sea, although they were found in Gulf of Mexico populations that were also genetically similar to those in the Mediterranean Sea (pairwise FST = 0.010–0.032), raising the possibility of multiple invasion sources. Multiple introductions from a combination of Black Sea and native region sources could be facilitated by intense local and transcontinental shipping activity, respectively.
    Type: Article , PeerReviewed
    Format: text
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  • 5
    Publication Date: 2023-02-08
    Description: Wastewater treatment plants (WWTPs) are a focal point for the removal of microplastic (MP) particles before they are discharged into aquatic environments. WWTPs are capable of removing substantial quantities of larger MP particles but are inefficient in removing particles with any one dimension of less than 100 mu m, with influents and effluents tending to have similar quantities of these smaller particles. As a single WWTP may release 〉100 billion MP particles annually, collectively WWTPs are significant contributors to the problem of MP pollution of global surface waters. Currently, there are no policies or regulations requiring the removal of MPs during wastewater treatment, but as concern about MP pollution grows, the potential for wastewater technologies to capture particles before they reach surface waters has begun to attract attention. There are promising technologies in various stages of development that may improve the removal of MP particles from wastewater. Better incentivization could speed up the research, development and adoption of innovative practices. This paper describes the current state of knowledge regarding MPs, wastewater and relevant policies that could influence the development and deployment of new technologies within WWTPs. We review existing technologies for capturing very small MP particles and examine new developments that may have the potential to overcome the shortcomings of existing methods. The types of collaborations needed to encourage and incentivize innovation within the wastewater sector are also discussed, specifically strong partnerships among scientific and engineering researchers, industry stakeholders, and policy decision makers.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
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