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SEDIMENT REMOVAL ACTIVITIES of the SEA CUCUMBERS Pearsonothuria Graeffei and Actinopyga Echinites in TAMBISAN, SIQUIJOR ISLAND, CENTRAL PHILIPPINES
Jurnal Pesisir dan Laut Tropis Volume 1 Nomor 1 Tahun 2018 SEDIMENT REMOVAL ACTIVITIES OF THE SEA CUCUMBERS Pearsonothuria graeffei AND Actinopyga echinites IN TAMBISAN, SIQUIJOR ISLAND, CENTRAL PHILIPPINES Lilibeth A. Bucol1, Andre Ariel Cadivida1, and Billy T. Wagey2* 1. Negros Oriental State University (Main Campus I) 2. Faculty of Fisheries and Marine Science, UNSRAT, Manado, Indonesia *e-mail: [email protected] Teripang terkenal mengkonsumsi sejumlah besar sedimen dan dalam proses meminimalkan jumlah lumpur yang negatif dapat mempengaruhi organisme benthic, termasuk karang. Kegiatan pengukuran kuantitas pelepasan sedimen dua spesies holothurians (Pearsonuthuria graeffei dan Actinophyga echites) ini dilakukan di area yang didominasi oleh ganggang dan terumbu terumbu karang di Pulau Siquijor, Filipina. Hasil penelitian menunjukkan bahwa P. graeffei melepaskan sedimen sebanyak 12.5±2.07% sementara pelepasan sedimen untuk A. echinites sebanyak 10.4±3.79%. Hasil penelitian menunjukkan bahwa kedua spesies ini lebih memilih substrat yang didominasi oleh macroalgae, diikuti oleh substrat berpasir dan coralline alga. Kata kunci: teripang, sedimen, Pulau Siquijor INTRODUCTION the central and southern Philippines. These motile species are found in Coral reefs worldwide are algae-dominated coral reef. declining at an alarming rate due to P. graffei occurs mainly on natural and human-induced factors corals and sponge where they appear (Pandolfi et al. 2003). Anthropogenic to graze on epifaunal algal films, while factors include overfishing, pollution, A. echinites is a deposit feeding and agriculture resulting to high holothurian that occurs mainly in sandy sedimentation (Hughes et al. 2003; environments. These two species also Bellwood et al. 2004). Sedimentation is differ on their diel cycle since also a major problem for reef systems A. -
Annelida, Hesionidae), Described As New Based on Morphometry
Contributions to Zoology, 86 (2) 181-211 (2017) Another brick in the wall: population dynamics of a symbiotic species of Oxydromus (Annelida, Hesionidae), described as new based on morphometry Daniel Martin1,*, Miguel A. Meca1, João Gil1, Pilar Drake2 & Arne Nygren3 1 Centre d’Estudis Avançats de Blanes (CEAB-CSIC) – Carrer d’Accés a la Cala Sant Francesc 14. 17300 Blanes, Girona, Catalunya, Spain 2 Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Avenida República Saharaui 2, Puerto Real 11519, Cádiz, Spain 3 Sjöfartsmuseet Akvariet, Karl Johansgatan 1-3, 41459, Göteborg, Sweden 1 E-mail: [email protected] Key words: Bivalvia, Cádiz Bay, Hesionidae, Iberian Peninsula, NE Atlantic Oxydromus, symbiosis, Tellinidae urn:lsid:zoobank.org:pub: D97B28C0-4BE9-4C1E-93F8-BD78F994A8D1 Abstract Results ............................................................................................. 186 Oxydromus humesi is an annelid polychaete living as a strict bi- Morphometry ........................................................................... 186 valve endosymbiont (likely parasitic) of Tellina nymphalis in Population size-structure ..................................................... 190 Congolese mangrove swamps and of Scrobicularia plana and Infestation characteristics .................................................... 190 Macomopsis pellucida in Iberian saltmarshes. The Congolese Discussion ....................................................................................... 193 and Iberian polychaete populations were previously -
The Curious and Neglected Soft-Bodied Meiofauna: Rouphozoa (Gastrotricha and Platyhelminthes)
Hydrobiologia (2020) 847:2613–2644 https://doi.org/10.1007/s10750-020-04287-x (0123456789().,-volV)( 0123456789().,-volV) MEIOFAUNA IN FRESHWATER ECOSYSTEMS Review Paper The curious and neglected soft-bodied meiofauna: Rouphozoa (Gastrotricha and Platyhelminthes) Maria Balsamo . Tom Artois . Julian P. S. Smith III . M. Antonio Todaro . Loretta Guidi . Brian S. Leander . Niels W. L. Van Steenkiste Received: 1 August 2019 / Revised: 25 April 2020 / Accepted: 4 May 2020 / Published online: 26 May 2020 Ó Springer Nature Switzerland AG 2020 Abstract Gastrotricha and Platyhelminthes form a meiofauna. As a result, rouphozoans are usually clade called Rouphozoa. Representatives of both taxa underestimated in conventional biodiversity surveys are main components of meiofaunal communities, but and ecological studies. Here, we give an updated their role in the trophic ecology of marine and outline of their diversity and taxonomy, with some freshwater communities is not sufficiently studied. phylogenetic considerations. We describe success- Traditional collection methods for meiofauna are fully tested techniques for their recovery and study, optimized for Ecdysozoa, and include the use of and emphasize current knowledge on the ecology, fixatives or flotation techniques that are unsuitable for distribution, and dispersal of freshwater gastrotrichs the preservation and identification of soft-bodied and microturbellarians. We also discuss the opportu- nities and pitfalls of (meta)barcoding studies as a means of overcoming the taxonomic impediment. Guest -
Purification of Glucose 6-Phosphate Dehydrogenase From
MARINE SCIENCE AND TECHNOLOGY BULLETIN VOLUME: 9 ISSUE: 2 DECEMBER 2020 Editor-in-Chief Adem Yavuz Sönmez Kastamonu University, Turkey Co-Editor Semih Kale Çanakkale Onsekiz Mart University, Turkey Section Editors Soner Bilen Kastamonu University, Turkey Ertuğrul Terzi Kastamonu University, Turkey Ali Eslem Kadak Kastamonu University, Turkey Gökhan Arslan Atatürk University, Turkey Statistics Editor Aycan Mutlu Yağanoğlu Atatürk University, Turkey Foreign Language Editor Muhammet Sinan Alpsoy Kastamonu University, Turkey Editorial Board Agus Oman Sudrajat Institut Pertanian Bogor, Indonesia Anca Nicoleta Şuţan University of Piteşti, Romania Antanas Kontautas Klaipeda University, Lithuania Arya Vazirzadeh Shiraz University, Iran Barış Bayraklı Sinop University, Turkey Derya Güroy Yalova University, Turkey Fazıl Şen Yüzüncü Yıl University, Turkey Gouranga Biswas Kakdwip Research Centre of Central Institute, India Hasan Hüseyin Atar Ankara University, Turkey İlhan Altınok Karadeniz Technical University, Turkey Liliana Török Danube Delta National Institute for Research & Development, Romania Mahmut Elp Kastamonu University, Turkey Marina Alexandrovna Sazykina Southern Federal University, Russia Mehmet Gökoğlu Akdeniz University, Turkey Muhammad Naeem Khan University of the Punjab, Pakistan Sajmir Beqiraj University of Tirana, Albania Sefa Acarlı Çanakkale Onsekiz Mart University, Turkey Sitti Zayda B. Halun Mindanao State University, Philippines Sonya Uzunova Institute of Fishing Resources, Bulgaria Süleyman Özdemir Sinop University, Turkey -
Promoting Nutritious Food Systems in the Pacific Islands About CTA
Profiling Bioactive Compounds and Key Nutrients in Pacific Island Crops and Marine Resources Promoting Nutritious Food Systems in the Pacific Islands About CTA The Technical Centre for Agricultural and Rural Cooperation (CTA) is a joint international institution of the African, Caribbean and Pacific (ACP) Group of States and the European Union (EU). CTA operates under the framework of the Cotonou Agreement and is funded CMYK LOGO by the EU. For more information on CTA, visit www.cta.int Written by Sunil Singh, The University of the South Pacific (USP), School of Biological and Chemical Sciences, Faculty of Science Technology and Environment Edited by Judith Ann Francis and Jana Dietershagen, CTA Designed by Stéphanie Leroy Disclaimer This work has been made with the financial assistance of the European Union. However, it remains under the sole responsibility of its author(s) and never reflects CTA’s or its co-publisher’s or European Union’s opinions or statements whatsoever nor as well the opinion of any country or State member. The user should make his/her own evaluation as to the appropriateness of any statements, argumentations, experimental technique or method as described in the work. Copyright notice This work is the intellectual property of CTA and its co-publishers. Its dissemination is encouraged for private study, research, teaching, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/ legalcode), provided that appropriate acknowledgement is made: • of CTA’s copyright, in accordance with the license Creative Commons 4.0, and of EU financing, by including the name of the author, the title of the article and the following notice “© CTA 2018 EU financing”, • and that CTA’s or its co-publishers or EU’s endorsement of authors’ views, products or services is not implied in any way, by including the standard CTA disclaimer. -
Platyhelminthes Rhabdocoela
Molecular Phylogenetics and Evolution 120 (2018) 259–273 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Species diversity in the marine microturbellarian Astrotorhynchus bifidus T sensu lato (Platyhelminthes: Rhabdocoela) from the Northeast Pacific Ocean ⁎ Niels W.L. Van Steenkiste , Elizabeth R. Herbert, Brian S. Leander Beaty Biodiversity Research Centre, Department of Zoology, University of British Columbia, 3529-6270 University Blvd, Vancouver, BC V6T 1Z4, Canada ARTICLE INFO ABSTRACT Keywords: Increasing evidence suggests that many widespread species of meiofauna are in fact regional complexes of Flatworms (pseudo-)cryptic species. This knowledge has challenged the ‘Everything is Everywhere’ hypothesis and also Meiofauna partly explains the meiofauna paradox of widespread nominal species with limited dispersal abilities. Here, we Species delimitation investigated species diversity within the marine microturbellarian Astrotorhynchus bifidus sensu lato in the turbellaria Northeast Pacific Ocean. We used a multiple-evidence approach combining multi-gene (18S, 28S, COI) phylo- Pseudo-cryptic species genetic analyses, several single-gene and multi-gene species delimitation methods, haplotype networks and COI conventional taxonomy to designate Primary Species Hypotheses (PSHs). This included the development of rhabdocoel-specific COI barcode primers, which also have the potential to aid in species identification and delimitation in other rhabdocoels. Secondary Species Hypotheses (SSHs) corresponding to morphospecies and pseudo-cryptic species were then proposed based on the minimum consensus of different PSHs. Our results showed that (a) there are at least five species in the A. bifidus complex in the Northeast Pacific Ocean, four of which can be diagnosed based on stylet morphology, (b) the A. -
Apostichopus Japonicus
Acta Oceanol. Sin., 2018, Vol. 37, No. 5, P. 54–66 DOI: 10.1007/s13131-017-1101-4 http://www.hyxb.org.cn E-mail: [email protected] Differential gene expression in the body wall of the sea cucumber (Apostichopus japonicus) under strong lighting and dark conditions ZHANG Libin1, 2, FENG Qiming1, 3, SUN Lina1, 2, FANG Yan4, XU Dongxue5, ZHANG Tao1, 2, YANG Hongsheng1, 2* 1 CAS Key laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China 2 Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China 3 University of Chinese Academy of Sciences, Beijing 100049, China 4 School of Agriculture, Ludong University, Yantai 264025, China 5 College of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China Received 25 January 2017; accepted 9 March 2017 © Chinese Society for Oceanography and Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract Sea cucumber, Apostichopus japonicus is very sensitive to light changes. It is important to study the influence of light on the molecular response of A. japonicus. In this study, RNA-seq provided a general overview of the gene expression profiles of the body walls of A. japonicus exposed to strong light (“light”), normal light (“control”) and fully dark (“dark”) environment. In the comparisons of “control” vs. “dark”, ”control” vs. “light” and “dark” vs. “light”, 1 161, 113 and 1 705 differentially expressed genes (DEGs) were identified following the criteria of |log2ratio|≥1 and FDR≤0.001, respectively. Gene ontology analysis showed that “cellular process” and “binding” enriched the most DEGs in the category of “biological process” and “molecular function”, while “cell” and “cell part” enriched the most DEGs in the category of “cellular component”. -
Biological and Taxonomic Perspective of Triterpenoid Glycosides of Sea Cucumbers of the Family Holothuriidae (Echinodermata, Holothuroidea)
Comparative Biochemistry and Physiology, Part B 180 (2015) 16–39 Contents lists available at ScienceDirect Comparative Biochemistry and Physiology, Part B journal homepage: www.elsevier.com/locate/cbpb Review Biological and taxonomic perspective of triterpenoid glycosides of sea cucumbers of the family Holothuriidae (Echinodermata, Holothuroidea) Magali Honey-Escandón a,⁎, Roberto Arreguín-Espinosa a, Francisco Alonso Solís-Marín b,YvesSamync a Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, C.P. 04510 México, D. F., Mexico b Laboratorio de Sistemática y Ecología de Equinodermos, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Apartado Postal 70-350, C.P. 04510 México, D. F., Mexico c Scientific Service of Heritage, Invertebrates Collections, Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B-1000 Brussels, Belgium article info abstract Article history: Since the discovery of saponins in sea cucumbers, more than 150 triterpene glycosides have been described for Received 20 May 2014 the class Holothuroidea. The family Holothuriidae has been increasingly studied in search for these compounds. Received in revised form 18 September 2014 With many species awaiting recognition and formal description this family currently consists of five genera and Accepted 18 September 2014 the systematics at the species-level taxonomy is, however, not yet fully understood. We provide a bibliographic Available online 28 September 2014 review of the triterpene glycosides that has been reported within the Holothuriidae and analyzed the relationship of certain compounds with the presence of Cuvierian tubules. We found 40 species belonging to four genera and Keywords: Cuvierian tubules 121 compounds. -
Community Structure, Diversity, and Distribution Patterns of Sea Cucumber
Community structure, diversity, and distribution patterns of sea cucumber (Holothuroidea) in the coral reef area of Sapeken Islands, Sumenep Regency, Indonesia 1Abdulkadir Rahardjanto, 2Husamah, 2Samsun Hadi, 1Ainur Rofieq, 2Poncojari Wahyono 1 Biology Education, Postgraduate Directorate, Universitas Muhammadiyah Malang, Malang, East Java, Indonesia; 2 Biology Education, Faculty of Teacher Training and Education, Universitas Muhammadiyah Malang, Malang, Indonesia. Corresponding author: A. Rahardjanto, [email protected] Abstract. Sea cucumbers (Holothuroidea) are one of the high value marine products, with populations under very critical condition due to over exploitation. Data and information related to the condition of sea cucumber communities, especially in remote islands, like the Sapeken Islands, Sumenep Regency, East Java, Indonesia, is still very limited. This study aimed to determine the species, community structure (density, frequency, and important value index), species diversity index, and distribution patterns of sea cucumbers found in the reef area of Sapeken Islands, using a quantitative descriptive study. This research was conducted in low tide during the day using the quadratic transect method. Data was collected by making direct observations of the population under investigation. The results showed that sea cucumbers belonged to 11 species, from 2 orders: Aspidochirotida, with the species Holothuria hilla, Holothuria fuscopunctata, Holothuria impatiens, Holothuria leucospilota, Holothuria scabra, Stichopus horrens, Stichopus variegates, Actinopyga lecanora, and Actinopyga mauritiana and order Apodida, with the species Synapta maculata and Euapta godeffroyi. The density ranged from 0.162 to 1.37 ind m-2, and the relative density was between 0.035 and 0.292 ind m-2. The highest density was found for H. hilla and the lowest for S. -
Vii Fishery-At-A-Glance: Warty Sea Cucumber Scientific Name: Apostichopus Parvimensis Range: Warty Sea Cucumber Range from Puert
Fishery-at-a-Glance: Warty Sea Cucumber Scientific Name: Apostichopus parvimensis Range: Warty Sea Cucumber range from Puerto San Bartolome in Baja California, Mexico to Fort Bragg, California, US, but are uncommon north of Point Conception, California. Habitat: Warty Sea Cucumber occupy waters from the subtidal zone to 180 feet (55 meters) depth. They are commonly found to inhabit both rocky reef and sand/mud substrate. Size (length and weight): Warty Sea Cucumber can reach 12-16 inches (30.5-40.6 c centimeters) when encountered in their natural state (in-situ) on the seafloor; however, this size measurement is not an accurate measure of body size due to the ability of sea cucumber to extend and contract their bodies. Constricted length and width provide a more accurate estimate of body size. The maximum reported length for Warty Sea Cucumber in a constricted state is 9.5 inches (24.1 centimeters) and a maximum width (excluding soft spines) of 3.5 inches (8.9 centimeters). The maximum individual weight recorded for a Warty Sea Cucumber in a whole or live state is 1.64 lb (743.9 grams), with the maximum weight of individuals in a cut eviscerated state (the predominant commercial landing condition) of .82 lb (371.9 grams). Life span: The life span of Warty Sea Cucumber is currently unknown. There is currently no way to directly age Warty Sea Cucumber. Reproduction: Warty Sea Cucumber have separate male and female sexes that reproduce via aggregate broadcast spawning. Spawning occurs from March to July in depths less than 100 feet (30.5 meters), with most spawning occurring less than 60 feet (18.3 meters) depth. -
Description a Sea Cucumber Species Holothuria Atra Jaeger, 1833 from Kish Island Iran (Echinodermata: Holothuroidea)
J. Basic. Appl. Sci. Res., 2(12)12660-12664, 2012 ISSN 2090-4304 Journal of Basic and Applied © 2012, TextRoad Publication Scientific Research www.textroad.com Description a Sea Cucumber Species Holothuria atra Jaeger, 1833 from Kish Island Iran (Echinodermata: Holothuroidea) Akram Tehranifard, M.R. Rahimibashar Department of Marine Biology, Lahijan branch .Islamic Azad University Lahijan, Iran ABSTRACT As each new species evolved, the ossicles changed with it, so each species has uniquely shaped ossicles. Examination of gross morphology and microscopic ossicles showed that this species is Holothoria atra. Color uniformly black or dark brown; when alive body usually covered with sand coating of sand which may also serve to keep it cool by protecting it from the sun's rays. , except for several pairs bare patches dorsally; tables with reduced but sometimes spinose disc. The importance of detailed reproductive biological studies on Holothuria atra are necessary due to its important role in the conservation of the marine environment. This species found on subtidal sand and grassbed, 3to 4 m depth at Kish Island. Distributed throughout most of the tropical Indo-Pacific area. Holothoria atra, is a holothurian of order Aspidochirotes belonging to the family Holothuriidae genus Holothuria. It is deposit-feeder and is mainly found on sandy bottom of fringing reefs surrounding the Kish island. Holothoria atra, is a holothurian of order Aspidochirotes belonging to the family Holothuriidae genus Holothuria. Holothuria atra is an omnivore, sifting through the sediment with its tentacles and feeding on detritus and other organic matter. It ingests sand at the same time and digests the biofilm on the sand grains before ejecting them through its anus. -
Porcupine Newsletter, Vol. 1 No. 4, December 1977
42 VOLUME 1. NUMBER 4. -42- December, 1977. ISSN 0309 - 3085. The present Newsletter, the fourth, heralds the beginning of the Society's second year, the first Newsletter having appeared in November, 1976. Looking back over the last twelve months, much has been achieved: we have had three Newsletters, meetings in ~dinbur~h,South Shields and Cardiff together with the additional field course in tlie Orkneys. In addition a working party has been tackling the problems involved with site recordings at sea, whilst a further group has been compiling 'FIASK' (Fauna1 lists and Systematic Keys for the Fauna and Flora of the North East Atlantic and Mediterranean), publication of which hopefully will commence in the summer of 1978. Saturday, 25th February, 1978 has been fixed for the second Annual General Meeting, tobe held at Manchester in association with a two day Symposium on "The Species Problem", which is being held jointly with the Littorinid-Research Group, whilst a further meeting has been arranged for the 24-25th June, 1978 at the Marine Biological S tation, The Strand, Por taferry, Co. Down, Northern Ireland, the theme being "Interstitial Fauna" From this it would appear that the Society is going from strength to strength, but it should be realised that this is due predominantly to the enthusiasm and work of a dedicated few, and members are reminded, therefore, that suggestions or offers of assistance for future meetings, or contributions for the Newsletter, comprising reviews, notices of forthcoming events, news of personal and joint research projects, requests for information, etc., should be sent to the Hon.