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Microbiota Differences of the Comb Jelly Mnemiopsis Leidyi in Native and Invasive Sub-Populations
bioRxiv preprint doi: https://doi.org/10.1101/601419; this version posted April 7, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Microbiota differences of the comb jelly Mnemiopsis leidyi in native and invasive sub‐populations Cornelia Jaspers1*, Nancy Weiland‐Bräuer3, Martin Fischer3, Sven Künzel4, Ruth A. Schmitz3 and Thorsten B.H. Reusch1 1GEOMAR Helmholtz Centre for Ocean Research Kiel, Marine Evolutionary Ecology, Kiel, Germany 2Institute for General Microbiology, Christian‐Albrechts‐Universität zu Kiel, Kiel, Germany 3Max Planck Institute for Evolutionary Biology, Plön, Germany *corresponding author: [email protected], +49‐431‐600‐4560, ORCID: 0000‐0003‐2850‐4131 Keywords: Comb jelly, metaorganism, bacteria, species translocations, invasive species 1 bioRxiv preprint doi: https://doi.org/10.1101/601419; this version posted April 7, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. ABSTRACT The translocation of non‐indigenous species around the world, especially in marine systems, is a matter of concern for biodiversity conservation and ecosystem functioning. While specific traits are often recognized to influence establishment success of non‐indigenous species, the impact of the associated microbial community for the fitness, performance and invasion success of basal marine metazoans remains vastly unknown. In this study we compared the microbiota community composition of the invasive ctenophore Mnemiopsis leidyi in different native and invasive sub‐populations along with characterization of the genetic structure of the host. By 16S rRNA gene amplicon sequencing we showed that the sister group to all metazoans, namely ctenophores, harbored a distinct microbiota on the animal host, which significantly differed across two major tissues, namely epidermis and gastrodermis. -
The Evolution of Siphonophore Tentilla for Specialized Prey Capture in the Open Ocean
The evolution of siphonophore tentilla for specialized prey capture in the open ocean Alejandro Damian-Serranoa,1, Steven H. D. Haddockb,c, and Casey W. Dunna aDepartment of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520; bResearch Division, Monterey Bay Aquarium Research Institute, Moss Landing, CA 95039; and cEcology and Evolutionary Biology, University of California, Santa Cruz, CA 95064 Edited by Jeremy B. C. Jackson, American Museum of Natural History, New York, NY, and approved December 11, 2020 (received for review April 7, 2020) Predator specialization has often been considered an evolutionary makes them an ideal system to study the relationships between “dead end” due to the constraints associated with the evolution of functional traits and prey specialization. Like a head of coral, a si- morphological and functional optimizations throughout the organ- phonophore is a colony bearing many feeding polyps (Fig. 1). Each ism. However, in some predators, these changes are localized in sep- feeding polyp has a single tentacle, which branches into a series of arate structures dedicated to prey capture. One of the most extreme tentilla. Like other cnidarians, siphonophores capture prey with cases of this modularity can be observed in siphonophores, a clade of nematocysts, harpoon-like stinging capsules borne within special- pelagic colonial cnidarians that use tentilla (tentacle side branches ized cells known as cnidocytes. Unlike the prey-capture apparatus of armed with nematocysts) exclusively for prey capture. Here we study most other cnidarians, siphonophore tentacles carry their cnidocytes how siphonophore specialists and generalists evolve, and what mor- in extremely complex and organized batteries (3), which are located phological changes are associated with these transitions. -
DOCTORAL THESIS a Physio-Ecological Study of Ephyrae
DOCTORAL THESIS A Physio-ecological Study of Ephyrae of the Common Jellyfish Aurelia aurita s.l. (Cnidaria: Scyphozoa), with Special Reference to their Survival Capability under Starvation Zhilu Fu Graduate School of Biosphere Science Hiroshima University September 2014 DOCTORAL THESIS A Physio-ecological Study of Ephyrae of the Common Jellyfish Aurelia aurita s.l. (Cnidaria: Scyphozoa), with Special Reference to their Survival Capability under Starvation Zhilu Fu Department of environmental Dynamics and Management Graduate School of Biosphere Science Hiroshima University September 2014 Abstract The moon jellyfish Aurelia aurita s.l. is the most common scyphozoan jellyfish in the coastal waters around the world, and the mass occurrences of this species have been reported from various regions. In recent decades, A. aurita blooms have become increasingly prominent in East Asian seas, causing serious problems to human sectors such as fisheries and coastal power plant operations. Therefore, it is important to identify causes for the enhancement of A. aurita populations to forecast likely outbreaks prior to the season of medusa blooms. In the population dynamics of scyphozoan jellyfish, the following two factors are important to determine the size of adult (medusa) population: (1) the abundance of benthic polyps, which reproduce asexually and undergo seasonal strobilation to release planktonic ephyrae, and (2) the mortality of ephyrae before recruitment to the medusa stage. Although much knowledge has been accumulated about physio-ecology of the polyp stage by previous studies, only few studies have been conducted for the ephyra stage. The success for survival through larval stage is basically affected by two factors, viz. food availability and predation. -
Pdf) and Their Values Are Plotted Against Temperature in Fig
Vol. 510: 255–263, 2014 MARINE ECOLOGY PROGRESS SERIES Published September 9 doi: 10.3354/meps10799 Mar Ecol Prog Ser Contribution to the Theme Section ‘Jellyfish blooms and ecological interactions’ FREEREE ACCESSCCESS Body size reduction under starvation, and the point of no return, in ephyrae of the moon jellyfish Aurelia aurita Zhilu Fu1, Masashi Shibata1, Ryosuke Makabe2, Hideki Ikeda1, Shin-ichi Uye1,* 1Graduate School of Biosphere Science, Hiroshima University, 4-4 Kagamiyama 1 Chome, Higashi-Hiroshima 739−8528, Japan 2Faculty of Science and Engineering, Ishinomaki Senshu University, 1 Shinmito Minamisakai, Ishinomaki 986-8580, Japan ABSTRACT: Scyphozoan ephyrae need to start feeding before their endogenous nutritional reserves run out, and the success of feeding and growth is crucial to their recruitment into the medusa population. To evaluate starvation resistance in first-feeding ephyrae of the moon jellyfish Aurelia aurita s.l., we determined their point of no return (PNR50), i.e. days of starvation after which 50% of ephyrae die even if they then feed. PNR50 values were 33.8, 38.4 and 58.6 d at 15, 12 and 9°C, respectively. Before reaching PNR50, the ephyrae showed significant body size reduc- tion: ca. 30 and 50% decrease in disc diameter and carbon content, respectively. These PNR50 val- ues are nearly 1 order of magnitude longer than those of larval marine molluscs, crustaceans and fishes, which is attributable to the ephyra’s extremely low metabolic (i.e. respiration) rate relative to its copious carbon reserves. Such a strong endurance under prolonged starvation is likely an adaptive strategy for A. aurita ephyrae, the release of which is programmed to occur during the annual period of lowest temperatures, allowing them to cope with the concomitant seasonal food scarcity. -
Invasive Species: a Challenge to the Environment, Economy, and Society
Invasive Species: A challenge to the environment, economy, and society 2016 Manitoba Envirothon 2016 MANITOBA ENVIROTHON STUDY GUIDE 2 Acknowledgments The primary author, Manitoba Forestry Association, and Manitoba Envirothon would like to thank all the contributors and editors to the 2016 theme document. Specifically, I would like to thank Robert Gigliotti for all his feedback, editing, and endless support. Thanks to the theme test writing subcommittee, Kyla Maslaniec, Lee Hrenchuk, Amie Peterson, Jennifer Bryson, and Lindsey Andronak, for all their case studies, feedback, editing, and advice. I would like to thank Jacqueline Montieth for her assistance with theme learning objectives and comments on the document. I would like to thank the Ontario Envirothon team (S. Dabrowski, R. Van Zeumeren, J. McFarlane, and J. Shaddock) for the preparation of their document, as it provided a great launch point for the Manitoba and resources on invasive species management. Finally, I would like to thank Barbara Fuller, for all her organization, advice, editing, contributions, and assistance in the preparation of this document. Olwyn Friesen, BSc (hons), MSc PhD Student, University of Otago January 2016 2016 MANITOBA ENVIROTHON STUDY GUIDE 3 Forward to Advisors The 2016 North American Envirothon theme is Invasive Species: A challenge to the environment, economy, and society. Using the key objectives and theme statement provided by the North American Envirothon and the Ontario Envirothon, the Manitoba Envirothon (a core program of Think Trees – Manitoba Forestry Association) developed a set of learning outcomes in the Manitoba context for the theme. This document provides Manitoba Envirothon participants with information on the 2016 theme. -
A Cultural Study of Gendered Onscreen
VEG-GENDERED: A CULTURAL STUDY OF GENDERED ONSCREEN REPRESENTATIONS OF FOOD AND THEIR IMPLICATIONS FOR VEGANISM by Paulina Aguilera A Thesis Submitted to the Faculty of The Dorothy F. Schmidt College of Arts & Letters In Partial Fulfillment of the Requirements for the Degree of Master of Arts Florida Atlantic University Boca Raton, FL August 2014 Copyright by Paulina Aguilera, 2014 11 VEG-GENDERED: A STUDY OF GENDERED ONSCREEN REPRESENTATIONS OF FOOD AND THEIR IMPLICATIONS FOR VEGANISM by Paulina Aguilera This thesis was prepared under the direction of the candidate's thesis advisor, Dr. Christine Scodari, School of Communication and Multimedia Studies, and has been approved by the members of her supervisory committee. It was submitted to the faculty of The Dorothy F. Schmidt College of Arts and Letters and was accepted in partial fulfillment of the requirements for the degree of Master of Arts. SUPERVISORY COMMITTEE: ~t~;,~ obe, Ph.D. David C. Williams, Ph.D. Interim Director, School of Communication and Multimedia Studies Heather Coltman, DMA Dean, ;~~of;candLetters 0'7/0 /:fdf4 8 ~T.Fioyd, Ed.D~ -D-at_e _ _,__ ______ Interim Dean, Graduate College 111 ACKNOWLEDGEMENTS The author wishes to acknowledge Dr. Christi ne Scodari for her incredible guidance and immeasurable patience during the research and writing of this thesis. Acknowledgements are also in order to the participating committee members, Dr. Chris Robe and Dr. Fred Fejes, who provided further feedback and direction. Lastly, a special acknowledgement to Chandra Holst-Maldonado is necessary for her being an amazing source of moral support throughout the thesis process. -
Durham Research Online
Durham Research Online Deposited in DRO: 28 June 2018 Version of attached le: Submitted Version Peer-review status of attached le: Peer-reviewed Citation for published item: Atkinson, S. (2016) 'Care, kidneys and clones : the distance of space, time and imagination.', in The Edinburgh companion to the critical medical humanities. Edinburgh: Edinburgh University Press., pp. 611-626. Edinburgh companions to literature and the humanities. Further information on publisher's website: https://edinburghuniversitypress.com/book-the-edinburgh-companion-to-the-critical-medical-humanities.html Publisher's copyright statement: Additional information: Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full DRO policy for further details. Durham University Library, Stockton Road, Durham DH1 3LY, United Kingdom Tel : +44 (0)191 334 3042 | Fax : +44 (0)191 334 2971 https://dro.dur.ac.uk Care, Kidneys and Clones: the distance of space, time and imagination Sarah Atkinson Department of Geography and the Centre for Medical Humanities, Durham University ‘We lived, as usual by ignoring. Ignoring isn't the same as ignorance, you have to work at it.’ (Margaret Atwood in The Handmaid’s Tale)1 Care as a concept is central to any engagement with health, ill-health and the practices that aim to prevent, mitigate or cure, and the term itself is mobilised in a variety of different ways and at a variety of different scales. -
2. We and They
2. We and They Democracy is becoming rather than being. It can easily be lost, but never is fully won. Its essence is eternal struggle. WILLIAM H. HASTIE OVERVIEW Chapter 1 focused on factors that shape an individual’s identity. It also described how those factors are sometimes used to exclude people from membership in various groups. Chapter 2 considers the ways a nation’s identity is defined. That definition has enormous significance. It indicates who holds power in the nation. And it determines who is a part of its “universe of obligation” – the name Helen Fein has given to the circle of individuals and groups “toward whom obligations are owed, to whom rules apply, and whose injuries call for [amends].”1 For much of world history, birth determined who was a part of a group’s “universe of obligation” and who was not. As Jacob Bronowski once explained, “The distinction [between self and other] emerges in prehistory in hunting cultures, where competition for limited numbers of food sources requires a clear demarcation between your group and the other group, and this is transferred to agricultural communities in the development of history. Historically this distinction becomes a comparative category in which one judges how like us, or unlike us, is the other, thus enabling people symbolically to organize and divide up their worlds and structure reality.”2 This chapter explores the power of those classifications and labels. As legal scholar Martha Minow has pointed out, “When we identify one thing as like the others, we are not merely classifying the world; we are investing particular classifications with consequences and positioning ourselves in relation to those meanings. -
The Living Reef
IN THIS MONTH'S MASWA NEWS The responsibility and ethics of keeping corals doesn’t stop with the home aquarist. It is also most importantly the responsibility of the aquarium retailer to ensure that he/she has up to date current information on coral Page keeping and has a holding system where corals are in kept conditions 2 Next Meetings where they will not die a slow death, but will survive and actually grow if What's happening this time? they are not purchased and happen to stay in the shop for a period of time. Not wanting to rub the retailers up the wrong way, unfortunately 2-3 Previous Meetings there is not a lot of good and current coral keeping information coming What happened last time? from them. In most of the shops corals will slowly die from poor water quality, low light levels and stinging each other - caused by poor 3-4 MASWA Guidelines placement. In my opinion this is just not good enough! There is no Society Guidelines in writing! excuse for improperly holding living animals! 4 Annual Donations Overdue! The technology and information for keeping corals in a healthy and happy Your Last Reminder!!! state is freely available and practiced in most parts of the world. We are somewhat behind in Australia however the internet has made it possible to 5-7 Jellyfish in the Swan/Canning Estuary communicate with aquarists in Europe and the USA and read worldwide discussions on keeping and caring for corals. This information has slowly What are they? Where do they come from?, and trickled though via some very dedicated marine aquarists and now Where do they go? Australia is beginning to enter the modern age of coral keeping. -
Population Structures and Levels of Connectivity for Scyphozoan and Cubozoan Jellyfish
diversity Review Population Structures and Levels of Connectivity for Scyphozoan and Cubozoan Jellyfish Michael J. Kingsford * , Jodie A. Schlaefer and Scott J. Morrissey Marine Biology and Aquaculture, College of Science and Engineering and ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia; [email protected] (J.A.S.); [email protected] (S.J.M.) * Correspondence: [email protected] Abstract: Understanding the hierarchy of populations from the scale of metapopulations to mesopop- ulations and member local populations is fundamental to understanding the population dynamics of any species. Jellyfish by definition are planktonic and it would be assumed that connectivity would be high among local populations, and that populations would minimally vary in both ecological and genetic clade-level differences over broad spatial scales (i.e., hundreds to thousands of km). Although data exists on the connectivity of scyphozoan jellyfish, there are few data on cubozoans. Cubozoans are capable swimmers and have more complex and sophisticated visual abilities than scyphozoans. We predict, therefore, that cubozoans have the potential to have finer spatial scale differences in population structure than their relatives, the scyphozoans. Here we review the data available on the population structures of scyphozoans and what is known about cubozoans. The evidence from realized connectivity and estimates of potential connectivity for scyphozoans indicates the following. Some jellyfish taxa have a large metapopulation and very large stocks (>1000 s of km), while others have clade-level differences on the scale of tens of km. Data on distributions, genetics of medusa and Citation: Kingsford, M.J.; Schlaefer, polyps, statolith shape, elemental chemistry of statoliths and biophysical modelling of connectivity J.A.; Morrissey, S.J. -
Scyphozoa: Rhizostomeae: Mastigiidae) from Turkey
Aquatic Invasions (2011) Volume 6, Supplement 1: S27–S28 doi: 10.3391/ai.2011.6.S1.006 Open Access © 2011 The Author(s). Journal compilation © 2011 REABIC Aquatic Invasions Records First record of Phyllorhiza punctata von Lendenfeld, 1884 (Scyphozoa: Rhizostomeae: Mastigiidae) from Turkey Cem Cevik1*, Osman Baris Derici1, Fatma Cevik1 and Levent Cavas2 1Çukurova University, Faculty of Fisheries, Balcalı, Adana, Turkey 2Dokuz Eylül University, Faculty of Science, Department of Chemistry, Division of Biochemistry, Kaynaklar Campus, İzmir, Turkey E-mail: [email protected] (CC), [email protected] (OBD), [email protected] (FC), [email protected] (LC) *Corresponding author Received: 1 December 2010 / Accepted: 11 April 2011/ Published online: 7 May 2011 Abstract The Australian spotted jellyfish Phyllorhiza punctata has been reported from several locations in the Mediterranean, but the present report is the first record from Turkish waters. Juveniles of the Erythrean alien shrimp scad, Alepes djedaba, were observed nestling among its tentacles. Possible vectors are mentioned. Key words: Phyllorhiza punctata, Alepes djedaba, Turkey, non-indigenous species bay of İskenderun (36º44.550N, 36º10.716E, Introduction salinity 38.6 PSU, sea water temperature 25.7ºC). The specimen was kept for 24 hours in a Phyllorhiza punctata von Lendenfeld, 1884 seawater aquarium and then preserved and (Scyphozoa: Rhizostomeae: Mastigiidae) deposited in the museum of Faculty of Fisheries originates in the tropical western Pacific at Çukurova University in Adana (CSFM- (Graham et al. 2003). The species has been CNI/2010-01). widely introduced in the Atlantic (Mienzan and Cornelius 1999; Cutress 1973; Silveira and Cornelius 2000; Graham et al. -
Crustacea: Amphipoda: Hyperiidea: Hyperiidae), with the Description of a New Genus to Accommodate H
Zootaxa 3905 (2): 151–192 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2015 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3905.2.1 http://zoobank.org/urn:lsid:zoobank.org:pub:A47AE95B-99CA-42F0-979F-1CAAD1C3B191 A review of the hyperiidean amphipod genus Hyperoche Bovallius, 1887 (Crustacea: Amphipoda: Hyperiidea: Hyperiidae), with the description of a new genus to accommodate H. shihi Gasca, 2005 WOLFGANG ZEIDLER South Australian Museum, North Terrace, Adelaide, South Australia 5000, Australia. E-mail [email protected] Table of contents Abstract . 151 Introduction . 152 Material and methods . 152 Systematics . 153 Suborder Hyperiidea Milne-Edwards, 1830 . 153 Family Hyperiidae Dana, 1852 . 153 Genus Hyperoche Bovallius, 1887 . 153 Key to the species of Hyperoche Bovallius, 1887 . 154 Hyperoche medusarum (Kröyer, 1838) . 155 Hyperoche martinezii (Müller, 1864) . 161 Hyperoche picta Bovallius, 1889 . 165 Hyperoche luetkenides Walker, 1906 . 168 Hyperoche mediterranea Senna, 1908 . 173 Hyperoche capucinus Barnard, 1930 . 177 Hyperoche macrocephalus sp. nov. 180 Genus Prohyperia gen. nov. 182 Prohyperia shihi (Gasca, 2005) . 183 Acknowledgements . 186 References . 186 Abstract This is the first comprehensive review of the genus Hyperoche since that of Bovallius (1889). This study is based primarily on the extensive collections of the ZMUC but also on more recent collections in other institutions. Seven valid species are recognised in this review, including one described as new to science. Two new characters were discovered; the first two pereonites are partially or wholly fused dorsally and the coxa of pereopod 7 is fused with the pereonite.