DOCSLIB.ORG

The Ecology of Sand Bubbler Crab at Pugu Beach, Lundu, Sarawak

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Ecology of Sand Bubbler Crab at Pugu Beach, Lundu, Sarawak THE ECOLOGY OF SAND BUBBLER CRAB AT PUGU BEACH, LUNDU, SARAWAK Haleeda Natasya binti Ahmad Zawawi (36167) Bachelor of Science with Honours (Aquatic Resource Science and Management) 2015 UNIVERSITI MALAYSIA SARAWAK Grade: Please tick (..J) Final Year Project. Report [Z] Masters D PhD D DECLARATION OF ORIGINAL WORK /"I C I This decla ra tioo IS made 00 the .....2j.hbday of.. .. ;).~ .NJ.... year .. .'f. ..';- .. Student's D eclaration: I .. :lV: .~.~. ~. DJ'!..... ~~~~f)? ~f)....§~.....~..f.\(\Il.fl .il... .1. ~ .~. ~ .~!..:..~ . 6.1.1> J.'...~ . ~ .~ . L .............. (PLEASE INDICATE NAME, iYIA1'RIC NO. AND FACULTY) hereby declare that t.he work entitl~d , .l?t··.. {~~~ J:)·c;:-:I."f.. · f% · · i ·,~~~il?··O..'V·,"~1-~lw ·A{I?..IlJ3, .... is my original work. I have nol copied from a ny ot~ l' stuJents wo':t. 01' from any other SOurces with the exception where dlle reference or acknowledgement is made explicitly in the text, nor has any pa rt of the work been written for me by another perso n. \\ t\ L£. EP P. 1\1 JYfI'lS,( A eI tHt M P, D(s 1q Date submitted Name of the student (Ma trie No.) 2. AW!'\vVl Supervis or's Declaration: L),Ji ~ KJ'" .I; ;" ~ Ai:> rz.~ , . I,..·... ........ · ~ ..MVlh~~ · ;;,];.;,·;;:(C. ....·.... (SUPERVISOR S NAME), hereby certify that the work entItled, «........................................·............·...................·(TITLE) was prepared by the aforementioned or above mentioned student, aI~ ScS slJ.bKitted to the "FACULTY' a s a * . partia ll1'<ttl fulfillment for the co nferment of .......:....~:...c...!?::v;.2..................................._..... (PLEASE INDICATE THE DEGREE TITLE), and the aforementioned work, to the best of my knowledge , is the said student's \vork Dr. SiIllIl.mllf Knofij'" A• . Rahim Ptl\!i}.nIh K.nan J~ 'a.iJl~ AkuaLl'" Received for examination by: ~ "",!.I11I ~Ub .,In T"li.l'Rdu~ i Sl.lm~r 1ll\1'\I £ RJ.)X~\\A[A"I SI.. ,)Ak ,\ WI\~ \Name . J 'h~\!PI',!;X!y:gl1l" ' I declare this ProjecUThesis is classified as (please tick (i)): D CONFIDENTIAL (Contains confide ntial information under the Official Secret Act 1972)* DRESTRICTED (Contains restricted information as specified by the organisation where research was done)* ¢OPEN AC CESS I declare this ProjectlThesis is to be submitted to the Centre for Academic Information Services (CAlS) and uploaded into UNIMAS Institutional Repository (UNIMAS JR) (Please tick (i»): DYES ~NO Validation of Project/Thes is I hereby duly affirmed with free conSe nt a nd wi llingness declared tha t this said Projecttrhesis sha ll be p laced officially in the Cent re for Academic Information Services with the a bide interest a nd righ ts a s follows: • This ProjectlThesis is the sale legal property of Unive rsiti Ma lays ia Sa rawak (UN lMAS). • The Ce ntre for Academic Information Services has the lawful right to make copies o[ the Projec t/Thesis for academic and research purposes only a nd not fo t other purposes, • The Centre fol' Academic Information Services has the lawfull'ight to digitize the content to be uploaded into Local Co ntent Database. • The Centre for Academic Information Services has the la wful right to make copies of the Pl'ojectlThesis if required for use by other parties for acadenlic purposes 01' by other Rig-her Learning Institutes. • No dispute 0 1' a ny claim shall arise from t he student himself / herself neither a third party on t his Project/Thesis once it becomes the sole property of UNIMAS. • This Project/Thesis 0 1' a ny material, data a nd informa tion rela ted to it, shall not be distributed. ptlblished Or disclosed to any party by the stnde nt himselflhe rself wit hout first obtaining approval from UNIMAS. Student's signature _____~tJ____-= __.__ _ Supervisor's sigua ture: 9C~<~ (Date) (Date) ;x,IS! UJ iS ("2 G I 6 / h) Current Address: "2-~4 · P.... y~ l.L 8. t; PI t\ l.\J ~ N C4 i 32.00 P E (1.111 \A1f\ f1-" r f' ~ LI1 VI "INi\ NC, Notes: * If the Projectrrhesis is CONFIDENTIAL or RESTRICTED, please attach together as annexure a letter from the organisation with the date of restriction indicated, and the reasons for the co nfidentiality and restriction. [The instrume nt was prepared by The Ce ntre for Acade mic Information Se rvices] The Ecology of Sand Bubbler Crab at Pugu Beach, Lundu, Sarawak Haleeda Natasya binti Ahmad Zawawi (36167) This project report is submitted in partial fulfillment of the requirements for the Degree of Bachelor of Science with Honours (Aquatic Resource Science and Management) Faculty of Resource Science and Technology UNIVERSITI MALAYSIA SARAWAK 2015 Acknowledgements Firstly, I want to express my gratitute to Allah for his blessings throughout the duration of my research and completion of this project. Special thanks to Dr. Siti Akmar Khadijah bt Ab. Rahim as my Supervisor who give me guide, advice and expertise. Not to forget my examiner, Dr. Samsur Mohamad for the comments given to improve my project. Next, I would like to thank my beloved mother, Norhayati binti Abu Hassan and families and friend for all the supports and beliefs. Special thanks to the lab assistant Mr Richard Toh and Mr Mustafa Kamal for spending their times to help during sampling. Thanks also to postgraduate students, Norhakimi Muhammad for all the advices to improve this report. I DECLARATION I hereby declare that the work in this project is my own except for quotations and summaries which have been duly acknowledged. No portion of the work referred to in this dissertation has been submitted in support of an application for another degree qualification of this or any other university or institution of higher learning. ....................................................... Haleeda Natasya binti Ahmad Zawawi Aquatic Resource Science and Management Department of Aquatic Science Faculty of Resource Science and Technology University Malaysia Sarawak II Table of Contents Acknowledgement I Declaration II Table of content III – IV List of figures V – VI List of tables VII – VIII List of abbreviation IX Abstract 1 1.0 Introduction 2 – 3 2.0 Literature Review 4 2.1Taxonomy Classification 4 2.2 Recent Status 5 2.3 Habitat Influences 6 2.4 Behavior of Sand Bubbler Crab 6 2.5 Species Identification 7 – 9 2.6 Habitat Preferance 9 – 10 2.7 Importants to the ecosystem 10 3.0 Material and Method 11 3.1 Study Site 11 3.2 Sampling Method 12 3.2.1 Sampling Station 12 3.2.2 Sampling of Sand Bubbler Crab 13 3.2.3 Physico-chemical Parameter 13 3.3 Laboratory Work 13 3.3.1 Carapace Measurement 13 3.3.2 Species identification 14 3.3.3 Sediment Analysis 14 3.3.3.1 Particle Size Analysis 14 3.3.3.2 Total Organic Matter 15 3.4 Data Analysis 15 3.4.1 The Density of Crabs 15 3.4.2 Correlation Analysis 16 III 4.0 Results 16 4.1 Community Structure 16-17 4.2 Crabs Density 18 - 19 4.3 Carapace Measurement 19 - 21 4.4 CW and CL Classes of D. intermedia 22 - 24 4.5 Physico-chemical Parameter 24 - 29 4.6 Sediment Particle Size Analysis 30 - 31 4.7 Total Organic Matter 32 4.8 Correlation Analysis 33 5.0 Discussion 34 5.1 Sand Bubbler Crab, D. intermedia 34 5.2 The Distribution of D. intermedia 34 - 37 5.3 Total Organic Matter Availability 37 6.0 Conclusion 38 7.0 References 39 - 40 Appendixe 41 - 45 IV List of Figures Figure 1 The varies shape of carapace posses by different species under 7 genus Scopimera (a,b.c). Figure 2 The varies formation of tooth at the middle of dactyl possess by 8 different species under genus Scopimera (a, c, e) Figure 3 Varies groove pattern of carapace posses by the species under 8 genus Dotilla. Figure 4 The map showing the location of the sampling site. 11 Figure 5 Illustration of sampling design by using line transect across the 12 intertidal area from high tide to low tide. Figure 6 The dorsal view of Dotilla intermedia. 17 Figure 7 The ventral view of Dotilla intermedia. 18 Figure 8 The present of setae on the abdomen part was used to 18 distinguish between two genus of sand bubbler crab, Dotilla and Scopimera. Figure 9 Male and female abdomen of D. intermedia. 18 Figure 10 Mean density of crabs (ind/m2) collected across the intertidal 19 area of Pugu Beach on November 2014. Figure 11 Mean density of crabs (ind/m2) collected across the intertidal 20 area of Pugu Beach on February 2015. Figure 12 Mean size of carapace width (mm) of D. intermedia across the 20 intertidal area of Pugu Beach on November 2014. Figure 13 Mean carapace lenght (mm) of D. intermedia across the 20 intertidal area of Pugu Beach on November 2014 Figure 14 Mean carapace width (mm) of D. intermedia across the 21 intertidal area of Pugu Beach on February 2015. Figure 15 Mean carapace lenght (mm) of D. intermedia across the 21 intertidal area of Pugu Beach on February 2015. Figure 16 Number of individual of D. intermedia based on carapace width 22 class size at Pugu Beach on November 2014. Figure 17 Number of individual of D. intermedia based on carapace 23 length class size at Pugu Beach on November 2014. V Figure 18 Number of individual of D. intermedia based on carapace width 23 class size at Pugu Beach on February 2015. Figure 19 Number of individual of D. intermedia based on carapace width 24 class size at Pugu Beach on February 2015. Figure 20 Mean salinity (PSU) of pore water across the intertidal area of 25 Pugu Beach on November 2014.
Load more

Recommended publications
  • Identifikasi Spesies Sand Bubbler Crabs Di Pantai Camplong Madura
    Stigma 11(1): 52-61; April 2018 ISSN: 1412 – 1840 © 2018 Prodi Biologi FMIPA UNIPA Surabaya IDENTIFIKASI SPESIES SAND BUBBLER CRABS DI PANTAI CAMPLONG MADURA Safirah N. Adhani 1, Vania N. Azizah 2, Muhlas 3, Reni Ambarwati 4, Erlix R. Purnama 5 Jurusan Biologi FMIPA Universitas Negeri Surabaya Jalan Ketintang, Surabaya 60231 Co-author: [email protected] ABSTRAK Pantai Camplong memiliki karakter yang dapat digunakan sebagai daya tarik wisatawan yaitu fenomena sand balls . Hal ini terjadi karena ada aktivitas makan kepiting pantai disetiap kondisi air laut surut. Beberapa dari jenis kepiting pantai tergolong dalam sand bubbler crabs yang merupakan kepiting-kepiting kecil yang hidup pada ekosistem tropis di pesisir pantai berpasir. Tujuan penelitian ini adalah untuk mengidentifikasi spesies kepiting yang tergolong sand bubbler crabs dan mengetahui kelimpahan relatifnya di Pantai Camplong Madura. Pengambilan sample dilakukan dengan metode sampling mengikuti arah pasang-surut air laut dengan menggunakan sepuluh plot yang berukuran 2x2 m dan berjarak 10 m antar plot. Identifikasi dilakukan dengan mengukur dimensi karapaks pada beberapa kepiting yang ditemukan disetiap plot lalu dibandingkan antara warna kaki dan karapaksnya. Hasil identifikasi diketahui ada lima spesies kepiting dengan dua diantaranya merupakan spesies yang tergolong sand bubbler crabs yaitu Scopimera globosa , dan Scopimera intermediata. Kedua spesies tersebut ditemukan dengan kelimpahan relatif yang secara berurutan yaitu 36,4%, dan 38,1% dari total seluruh spesies kepiting yang ditemukan. Tiga spesies kepiting pantai lainnya yang teridentifikasi adalah Mictyris longicarpus, Thalamita spinimana dan Asthoret lunaris dengan kelimpahan relatif total sebesar 25,5%. Simpulan yang dapat diambil adalah spesies yang tergolong sand bubbler crabs di Pantai Camplong Madura terdiri dari dua spesies berbeda yaitu Scopimera globosa dan Scopimera intermediata.
    [Show full text]
  • Growth and Population Biology of the Sand-Bubbler Crab Scopimera
    Sharifian et al. The Journal of Basic and Applied Zoology (2021) 82:21 The Journal of Basic https://doi.org/10.1186/s41936-021-00218-x and Applied Zoology RESEARCH Open Access Growth and population biology of the sand-bubbler crab Scopimera crabricauda Alcock 1900 (Brachyura: Dotillidae) from the Persian Gulf, Iran Sana Sharifian1* , Vahid Malekzadeh2, Ehsan Kamrani2 and Mohsen Safaie2 Abstract Background: Dotillid crabs are introduced as one common dwellers of sandy shores. We studied the ecology and growth of the sand bubbler crab Scopimera crabricauda Alcock, 1900, in the Persian Gulf, Iran. Crabs were sampled monthly by excavating nine quadrats at three intertidal levels during spring low tides from January 2016 to January 2017. Results: Population data show unimodal size-frequency distributions in both sexes. The Von Bertalanffy function was calculated at CWt = 8.76 [1 − exp (− 0.56 (t + 0.39))], CWt = 7.90 [1 − exp (− 0.59 (t + 0.40))] and CWt = 9.35 [1 − exp (− 0.57 (t + 0.41))] for males, females, and both sexes, respectively. The life span appeared to be 5.35, 5.07, and 5.26 years for males, females, and both sexes, respectively. The cohorts were identified as two age continuous groups, with the mean model carapace width 5.39 and 7.11 mm for both sexes. The natural mortality (M) coefficients stood at 1.72 for males, 1.83 for females, and 1.76 years−1 for both sexes, respectively. The overall sex ratio (1:0.4) was significantly different from the expected 1:1 proportion with male-biased.
    [Show full text]
  • University of Southampton Research Repository Eprints Soton
    University of Southampton Research Repository ePrints Soton Copyright © and Moral Rights for this thesis are retained by the author and/or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This thesis cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder/s. The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. When referring to this work, full bibliographic details including the author, title, awarding institution and date of the thesis must be given e.g. AUTHOR (year of submission) "Full thesis title", University of Southampton, name of the University School or Department, PhD Thesis, pagination http://eprints.soton.ac.uk UNIVERSITY OF SOUTHAMPTON FACULTY OF ENGINEERING, SCIENCE AND MATHEMATICS School of Ocean and Earth Science ECOLOGY OF THE INTERTIDAL CRAB DOTILLA INTERMEDIA FROM TSUNAMI-IMPACTED BEACHES IN THAILAND Christopher John Allen Thesis for the degree of Doctor of Philosophy April 2010 DECLARATION OF AUTHORSHIP I, Christopher John Allen , declare that the thesis entitled The Ecology of the intertidal crab Dotilla intermedia from tsunami-impacted beaches in Thailand and the work presented in the thesis are both my own, and have been generated by me as a result of my own original research. I confirm that: • This work was done wholly or mainly while in candidature for a research degree at this University; • Where any part of this thesis has been previously submitted for a degree or any other qualification at this University or any other institution, this has been clearly stated; • Where I have consulted the published work of others, this is always clearly attributed; • Where I have quoted from the work of others, the source is always given.
    [Show full text]
  • ปูฤาษีshielded Box Crab ปูโคลน ปูโคลน ปูเสฉวนลายส้ม Orange Striped
    คลังความรู้ดิจิทัล มหาวิทยาลัยเกษตรศาสตร์ 1 cm 1 cm 1 cm 5 mm 1 cm 1 cm 1 cm 5 mm 1 cm 1 cm 1 cm 1 cm ปูฟองน ้า Sponge crab ปูเป้ใหญ่ Carrier crab ปูเป้เล็ก Carrier crab ปูเป้ Carrier crab ปูฤาษี Shielded box crab ปูหนุมานลายดอก Flower moon crab ปูหนุมานหกตุ่ม Spotted moon crab ปูกระดุม Pebble crab ปูกระดุม Pebble crab ปูกระดุม Pebble crab ปูกระดุม Pebble crab ปูจาน Buckler crab Conchoecetes sp. Dorippe quadridens Dorippoides facchino Neodorippe callida Calappa clypeata Matuta planipes Matuta victor Arcania novemspinosa Myra hainanica Lyphira ovata Philyra sp. Cryptopodia fornicate 2 cm 1 cm 5 cm 2 cm 2 cm 3 cm 1 cm 1 cm 1 cm 2 cm 5 cm 2 cm ปูก้ามยาว Elbow crab ปูก้ามยาว Elbow crab ปูบึ ง Spider crab ปูบึ ง Spider crab ปูบึ ง Spider crab ปูแมงมุม Spider crab ปูแมงมุมหน้าหัก Majid crab ปูกะตอย Swimming crab ปูกะตอยเขียว Swimming crab ปูกางเขน Cross-marked swimming crab ปูม้าเหล็กไฟ Indo-Pacific swimming crab ปูม้าก้ามลีบ Swimimg crab Enoplolambrus echinatus Rhinolambrus longispinus Doclea armata Doclea cannalifera Doclea rissoni Hyastenus diacanthus Micippa thalia Charybdis affinis Charybdis anisodon Charybdis feriatus Charybdis hellerii Lupocycloporus gracilimanus 5 cm 5 cm 1 cm 5 mm 2 cm 5 cm 2 cm 5 mm 5 mm 5 mm 2 cm 2 cm ปูเรดาห์ Long-eyed swimming crab ปูม้า Blue swimming crab ปูด้า Orange mud crab ปูหิน ปูม้า Swimimg crab ปูใบ้ ปูใบ้กระดองพัด ปูใบ้ลายตาข่าย Mosaic reef crab ปูใบ้ ปูใบ้ ปูใบ้ Stone crab ปูใบ้ Stone crab Podophthalmus vigil Portunus pelagicus Scylla olivacea Thalamita sima Xiphonectes hastatoides Actaea savignii Leptodius affinis Lophozozymus pictor Medaeops sp. Paramedaeus sp. Menippe rumphii Myomenippe hardwickii 5 mm 2 cm 1 cm 5 cm 1 cm 5 cm 1 cm 5 mm 1 cm 2 cm 5 mm 1 cm Trichiine crab Euryplacid crab Euryplacid crab Euryplacid crab ปูใบ้ก้ามขาว Square-shelled crab ปูใบ้ปม ปูใบ้ ปูใบ้ ปูใบ้ขน ปูใบ้ ปูใบ้ ปูลม Horneye ghost crab Trichia sakaii Eucrate alcocki Eucrate tripunctata Eucrate crenata Galene bispinosa Halimede ochtodes Sphaerozius nitidus Benthopanope eucratoides Heteropilumnus sp.
    [Show full text]
  • Population Structure and Morphometric Variation in the Sand-Bubbler Crab Scopimera Crabricauda (Brachyura: Dotillidae)
    Animal Biology 67 (2017) 319–330 brill.com/ab Population structure and morphometric variation in the sand-bubbler crab Scopimera crabricauda (Brachyura: Dotillidae) Sana Sharifian1, Vahid Malekzadeh2, Ehsan Kamrani2,∗ and Mohsen Safaie2 1 Department of Marine Biology, University of Hormozgan, Bandar Abbas, Iran 2 Fishery Department, University of Hormozgan, Bandar Abbas, Iran Submitted: September 2, 2017. Final revision received: November 4, 2017. Accepted: November 8, 2017 Abstract In the present study, population ecology and relationships between various morphometric characters of the sand-bubbler crab Scopimera crabricauda from the Persian Gulf (Iran) were studied. Crabs were collected monthly by excavating nine quadrats in high-density areas of open burrows at low, mid and high intertidal levels during spring low tides for one year. A total of 534 crabs was collected, of which 70% were males (and 30% females). Mean carapace width and total weight in both sexes showed significant differences. Crabs with a carapace width ranging from 5 to 7 mm were the dominant crabs in the population. The highest numbers of crabs were found in the higher intertidal area. The mean size of crabs decreased towards the sea. The aggregation of small crabs was found towards sea in female crabs. Juveniles were abundantly found from January to March whereas the sub-adults and adults were mostly found from April to January. The carapace length to carapace width relationship differed between males and females, as did the carapace width and carapace length to total weight relationships. Finally, the relationship between carapace width and weight for both sexes showed that the growth of this species is allometric.
    [Show full text]
  • Antunes M Dr Bot Int.Pdf
    Análise do comportamento reprodutivo, ultraestrutura do sistema reprodutor e viabilidade de cultivo do caranguejo Stenorhynchus seticornis (Herbst, 1788) (Decapoda, Majoidea, Inachoididae) Mariana Antunes Orientadora: Profa. Dra. Maria Lucia Negreiros Fransozo Co-orientador: Prof. Dr. Rafael Augusto Gregati Tese apresentada ao curso de pós-graduação em Ciências Biológicas – Área de Zoologia, do Instituto de Biociências, Universidade Estadual Paulista (UNESP), Campus de Botucatu, como parte dos requisitos para a obtenção do título de Doutora em Ciências Biológicas – Área de Zoologia. Botucatu – SP 2017 FICHA CATALOGRÁFICA ELABORADA PELA SEÇÃO TÉC. AQUIS. TRATAMENTO DA INFORM. DIVISÃO TÉCNICA DE BIBLIOTECA E DOCUMENTAÇÃO - CÂMPUS DE BOTUCATU - UNESP BIBLIOTECÁRIA RESPONSÁVEL: ROSEMEIRE APARECIDA VICENTE-CRB 8/5651 Silva, Mariana Antunes da. Análise do comportamento reprodutivo, ultraestrutura do sistema reprodutor e viabilidade de cultivo do caranguejo aranha Stenorhynchus seticornis (Brachyura: Inachoididae) / Mariana Antunes da Silva. - Botucatu, 2017 Tese (doutorado) - Universidade Estadual Paulista "Júlio de Mesquita Filho", Instituto de Biociências de Botucatu Orientador: Maria Lucia Negreiros Fransozo Coorientador: Rafael Augusto Gregati Capes: 20400004 1. Decapode (Crustaceo). 2. Caranguejo - Reprodução. 3. Comportamento sexual dos animais. 4. Espermateca. 5. Cópula. Palavras-chave: Cópula; Cultivo; Histologia; Receptáculo seminal; Vaso deferente. NEBECC Núcleo de Estudos em Biologia, Ecologia e Cultivo de Crustáceos “Jamais exigirei que você acredite em qualquer coisa, o importante é quanto à evidência é convincente pra você.” (Neil deGrasse Tyson) “Se enxerguei mais longe, foi porque me apoiei sobre os ombros de gigantes”. (Isaac Newton) DEDICATÓRIA À minha querida vó Clarice (in memorian), meu exemplo de força e fé, que tanto contribuiu para minha formação e que sempre se orgulhou das minhas conquistas.
    [Show full text]
  • The Crustacean-Inspired Pokémon
    Journal of Geek Studies jgeekstudies.org Pokécrustacea: the crustacean-inspired Pokémon Rafael M. Rosa, Daniel C. Cavallari & Ana L. Vera-Silva Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo. Ri- beirão Preto, SP, Brazil. E-mail: [email protected]; [email protected]; [email protected] Crustaceans are a large and incredi- spectable few meters of leg span (e.g., the bly diverse group of very familiar animals Japanese spider crab can reach a whopping such as crabs, lobsters, shrimps, woodlice, 3.8 m or 12.5 ft). They are quite an ancient barnacles, and their allies. As full-fledged group, ranging back to the Cambrian pe- arthropods (invertebrate animals with an riod some 511 million years ago. Some ex- exoskeleton, a segmented body, and paired isting animals are virtually identical to fos- jointed appendages), they comprise over silized forms from the Triassic, dating back 70,000 species (Brusca et al., 2016) ranging 200 million years ago. in size from a fraction of a millimeter to re- Left: Decapods, from German zoologist Ernst Haeckel’s 1904 work “Kunstformen der Natur”. Right: Pokémon inspired by real-world decapods. 97 Rosa et al. Despite being classically identified as a group of their own, recent studies have shown that Crustacea is actually a para- phyletic taxon (that is, a group of animals that doesn’t include all descendants of their common ancestor) and that some crusta- ceans are more closely related to Hexapoda (insects and their allies) than to other crus- taceans (Regier et al., 2010; Lozano-Fernan- dez et al., 2019).
    [Show full text]
  • New Distribution Record of the Soldier Crab, Dotilla Myctiroides (Milne-Edwards) from Lubuk Damar Coast, Aceh Province, Indonesia 1Ananingtyas S
    New distribution record of the soldier crab, Dotilla myctiroides (Milne-Edwards) from Lubuk Damar Coast, Aceh Province, Indonesia 1Ananingtyas S. Darmarini, 2Kadarwan Soewardi, 3Tri Prartono, 2Agus A. Hakim, 2Siti Nursiyamah, 2,4,5Yusli Wardiatno 1 Doctoral Program in Aquatic Resources Management, Graduate School, Bogor Agricultural University, Kampus IPB Darmaga, Bogor 16680, West Java, Indonesia; 2 Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Kampus IPB Darmaga, Bogor 16680, West Java, Indonesia; 3 Department of Marine Sciences and Technology, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University, Kampus IPB Darmaga, Bogor 16680, West Java, Indonesia; 4 Center for Coastal and Marine Resources Studies, Bogor Agricultural University, Kampus IPB, Baranangsiang, Jalan Raya Pajajaran, Bogor 16143, West Java, Indonesia; 5 Center for Environmental Research (PPLH) IPB, Kampus IPB Darmaga, Bogor 16680, West Java, Indonesia. Corresponding author: Y. Wardiatno, [email protected] Abstract. Dotilla myctiroides was collected in the sandy beach area of Lubuk Damar, Aceh Tamiang, Aceh Province - Indonesia. Along the coast was covered by mangrove vegetation, such as Aegiceras floridum, Excoecaria agallocha, Bruguiera sexangula, Xylocarpus granatum, Rhizophora apiculata. This paper was aimed to firstly report on the presence of D. myctiroides (Milne-Edwards) from the study site. This animal has a distinctive behavior to dig burrow and produces ball-like pellets from the sand of its burrow. The specimens were collected by hand, and preserved in 96% alcohol. In laboratory specimens were identified morphologically and genetically. Identification of species morphology is supported by molecular analysis with the 16S rRNA gene. The mean value of carapace length, carapace width, and weight of all specimen are 1.097 cm, 0.988 cm, 0.902 g, respectively.
    [Show full text]
  • Ichnological Studies of the Western Australian Soldier Crab Mictyris Occidentalis Unno 2008: Correlations of Field and Aquarium Observations
    Journal of the Royal Society of Western Australia, 91: 175–198, 2008 Ichnological studies of the Western Australian soldier crab Mictyris occidentalis Unno 2008: correlations of field and aquarium observations J Unno1, 2 & V Semeniuk2 1 Edith Cowan University Joondalup WA 6027 2 V & C Semeniuk Research Group 21 Glenmere Road Warwick WA 6024 Manuscript received January 2008; accepted May 2008 Abstract The Western Australian soldier crab, Mictyris occidentalis Unno, spends most of its life cycle in- faunal in sandy tidal environments, and produces up to 16 different types of ichnological products: back-filled burrows, cavities, circular pustular structures, clots, craters, dactyl prints, discard pellets, eruption structures, excavation pellets, exit holes, hollow shafts, linear pustular structures, mat pustular structures, rosettes, scrape marks, and surface-parallel tunnels (with their floors and roofs). These are the result of the crabs working the sediment at different stages of their life cycle, whether or not they emerge, and their working of the sediment at different times of the tide. Soldier crabs have three phases to their ichnological behaviour corresponding to their life stages. Newly arrived recruits and juvenile crabs are cryptic, and develop sediment surfaces strewn with clots. Crabs in the early to middle stage of their life cycle also are cryptic, and develop subsurface cavities during high water, and subsurface cavities and sediment surfaces covered in pustular structures during low water. Adult crabs exhibit cryptic and emergent phases, and develop the most complex range of ichnological products – during high water, they form subsurface cavities, and during low water they develop cavities in the subsurface as well as sediment surfaces covered in pustular structures, exit holes, dactyl prints (sometimes), discard pellets, and rosettes.
    [Show full text]
  • The Radial Forager Patterns and Population Density of the Scopimera Inflata
    Madi Becker Meghan Murray Chelsea Ricke The radial forager patterns and population density of the Scopimera inflata Background Live on sandy beaches in the tropical Indo-Pacific Grey-brown in color well matched to the color of sand where it lives Emerge at low tide (Three hours after low tide to first emerge and 5 -6 hours for last to emerge) During Low tide they burrow up to the surface to feed on detritus and other organic material left by the retreating water The burrow until the crab reaches the water table in the sand The organic matter is taken from the pellet and is pushed down the burrow It begins to feed by scraping the surface of the sand It is spooned into the mouth and rotated to form the pellet To discard the pellet the crab moves away from its burrow in a straight line for 20-30 cm (star like pattern) (It returns to the hole and repeats the same action at a different angle) While in the burrow waiting for the next tide it stores water in its gill cavities (to keep the gills moist and assist in feeding) https://www.youtube.com/watch?v=6XJtq2d_lFs Introduction Purpose To examine the foraging pattern and population density of the Scopimera inflata. Question 1: Will the foraging lines have a longer radius further from shoreline? Null hypothesis: There will be no difference in the Scopimera inflata foraging lines radius. Question 2: Will the population density change with distance from the shoreline? Null hypothesis: There will be no change in the Scopimera inflata population density.
    [Show full text]
  • Tracemaking Activities of Crabs and Their Environmental Significance: the Ichnogenus Psilonichnus
    Smith ScholarWorks Geosciences: Faculty Publications Geosciences 3-1984 Tracemaking Activities of Crabs and Their Environmental Significance: The Ichnogenus Psilonichnus Robert W. Frey University of Georgia H. Allen Curran Smith College, [email protected] S. George Pemberton Alberta Geological Survey Follow this and additional works at: https://scholarworks.smith.edu/geo_facpubs Part of the Geology Commons Recommended Citation Frey, Robert W.; Curran, H. Allen; and Pemberton, S. George, "Tracemaking Activities of Crabs and Their Environmental Significance: The Ichnogenus Psilonichnus" (1984). Geosciences: Faculty Publications, Smith College, Northampton, MA. https://scholarworks.smith.edu/geo_facpubs/53 This Article has been accepted for inclusion in Geosciences: Faculty Publications by an authorized administrator of Smith ScholarWorks. For more information, please contact [email protected] Paleontological Society Tracemaking Activities of Crabs and Their Environmental Significance: The Ichnogenus Psilonichnus Author(s): Robert W. Frey, H. Allen Curran and S. George Pemberton Source: Journal of Paleontology, Vol. 58, No. 2, Trace Fossils and Paleoenvironments: Marine Carbonate, Marginal Marine Terrigenous and Continental Terrigenous Settings (Mar., 1984), pp. 333-350 Published by: SEPM Society for Sedimentary Geology Stable URL: http://www.jstor.org/stable/1304788 Accessed: 19-04-2016 18:17 UTC REFERENCES Linked references are available on JSTOR for this article: http://www.jstor.org/stable/1304788?seq=1&cid=pdf-reference#references_tab_contents You may need to log in to JSTOR to access the linked references. Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at http://about.jstor.org/terms JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive.
    [Show full text]
  • The Reproductive Ecology and Biology of the Pill-Box Crab: Halicarcinus Cookii (Brachyura: Hymenosomatidae) Filhol, 1885
    The Reproductive Ecology and Biology of the Pill-box Crab: Halicarcinus cookii (Brachyura: Hymenosomatidae) Filhol, 1885 A thesis submitted in partial fulfilment of the requirements for the Degree of Master of Science in Zoology in the School of Biological Sciences at the University of Canterbury by Anneke M. van den Brink University of Canterbury 2006 Abstract i This study investigates the reproductive strategies of the pill-box crab, Halicarcinus cookii on the Kaikoura Peninsula, New Zealand. Various aspects essential to understanding reproductive strategies were examined including growth, population dynamics, reproductive biology and mating behaviour. H. cookii exhibits obvious sexual dimorphism such that females develop wide abdomens forming brood chambers, and males tend to grow larger than females and have larger chelipeds in relation to body size. H. cookii allocates energy into growth and reproduction in separate phases of its life cycle where growth ceases as reproductive maturity begins due to a terminal/pubertal moult. Despite the presence of ovigerous females throughout the 15 month sampling period, the population was highly seasonal, with peaks in recruitment and growth occurring primarily during the winter months and peaks in numbers of mature individuals during the summer months. Reproductive output increased with body size in H. cookii, as larger females produced more eggs and larger males transferred more sperm than their smaller counterparts. Ovaries matured prior to the terminal/pubertal moult (anecdysis) and, in multiparous females, in synchrony with brood development, allowing females to produce broods in quick succession, maximising their reproductive output in their short life span (approximately 12-18 months, 6 months as an adult).
    [Show full text]