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Effect of Saltmarsh Cordgrass, Spartina Alterniflora, Invasion Stage
Pakistan J. Zool., vol. 47(1), pp. 141-146, 2015. Effect of Saltmarsh Cordgrass, Spartina alterniflora, Invasion Stage on Cerithidea cingulata (Caenogastropoda: Potamididae) Distribution: A Case Study from a Tidal Flat of Western Pacific Ocean, China Bao-Ming Ge,1, 2* Dai-Zhen Zhang,1 Yi-Xin Bao,2 Jun Cui,1 Bo-Ping Tang,1 and Zhi-Yuan Hu2 1Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Yancheng Teachers University, Kaifang Avenue 50, Yancheng, Jiangsu 224051, P. R. China 2Institute of Ecology, Zhejiang Normal University, Yingbin Avenue 688, Jinhua, Zhejiang 321004, P. R. China Abstract.- The effect of saltmarsh cordgrass, Spartina alterniflora (Poales: Poaceae) invasion stage on Cerithidea cingulata (Caenogastropoda: Potamididae) distribution was studied in 2007 at the eastern tidal flat of Lingkun Island, Wenzhou Bay, China. The distribution pattern of C. cingulata was aggregated during each season, as shown in experiments utilizing Taylor's power regression and Iowa's patchiness regression methods (P < 0.001). Two- way ANOVA indicated that densities were significantly affected by S. alterniflora invasion stage (P < 0.001), however, no significant season effect was found (P = 0.090) and on the interaction between the seasons (P = 0.939). The density distribution during the invasion stage was significantly different in each season as shown in one-way ANOVA. Pearson’s correlation coefficient analysis of density data indicated that the highest densities occurred in habitats at the initial invasion stage during summer. The peak in C. cingulata density during spring, autumn and winter occurred in habitats where invasion was classified as initial, whereas the lowest densities occurred in the stage of invasion completed during each season. -
Migratory Behaviour of the Mangrove Gastropod Cerithidea Decollata Under Unfamiliar Conditions
Journal of Experimental Marine Biology and Ecology 457 (2014) 236–240 Contents lists available at ScienceDirect Journal of Experimental Marine Biology and Ecology journal homepage: www.elsevier.com/locate/jembe Migratory behaviour of the mangrove gastropod Cerithidea decollata under unfamiliar conditions Anna Marta Lazzeri a, Nadia Bazihizina b, Pili K. Kingunge c, Alessia Lotti d, Veronica Pazzi d, Pier Lorenzo Tasselli e, Marco Vannini a,⁎, Sara Fratini a a Department of Biology, University of Florence, via Madonna del Piano 6, I-50019 Sesto Fiorentino, Italy b Department of Agrifood Production and Environmental Sciences, University of Florence, Piazzale delle Cascine, 18, 50144 Firenze, Italy c Kenyan Marine Fisheries Research Institute (KMFRI), P.O. Box 81651, Mombasa, Kenya d Department of Earth Sciences, University of Florence, via La Pira, 2, Firenze, Italy e Department of Physics, University of Florence, via Sansone 1, I-50019 Sesto Fiorentino, Italy article info abstract Article history: The mangrove gastropod Cerithidea decollata feeds on the ground at low tide and climbs trunks 2–3 h before the Received 1 April 2014 arrival of water, settling about 40 cm above the level that the incoming tide will reach at High Water (between 0, Received in revised form 26 April 2014 at Neap Tide, and 80 cm, at Spring Tide). Biological clocks can explain how snails can foresee the time of the in- Accepted 28 April 2014 coming tide, but local environmental signals that are able to inform the snails how high the incoming tide will be are likely to exist. To identify the nature of these possible signals, snails were translocated to three sites within the Keywords: – Gastropod behaviour Mida Creek (Kenya), 0.3 3 km away from the site of snail collection. -
Tingkat Pemanfaatan Siput Hisap (Cerithidea Obtusa) Di Muara Sei Jang Kota Tanjungpinang Kepulauan Riau
Tingkat Pemanfaatan Siput Hisap (Cerithidea obtusa) di muara Sei Jang Kota Tanjungpinang Kepulauan Riau. Jokei Mahasiswa Manajeman Sumberdaya Perairan, FIKP UMRAH, Diana Azizah Dosen Manajeman Sumberdaya Perairan, FIKP UMRAH, Susiana Dosen Manajeman Sumberdaya Perairan, FIKP UMRAH, ABSTRAK JOKEI, 2017. Tingkat Pemanfaatan Siput Hisap (Cerithidea obtusa) di muara Sei Jang Kota Tanjungpinang Kepulauan Riau. Jurusan Manajeman Sumberdaya Perairan, Fakultas Ilmu Kelautan dan Perikanan, Universitas Maritim Raja Ali Haji. Pembimbing oleh Diana Azizah S.Pi., M.Si dan Susiana S.Pi., M.Si. Tujuan dari penelitian ini adalah untuk mengetahui tingkat pemanfaatan siput hisap (Cerithidea obtusa) di perairan muara Sei Jang kelurahan Sei Jang kota Tanjungpinang. Penelitian ini dilakukan pada bulan Januari sampai bulan juli 2017. Pengambilan sampel siput hisap dengan menggunakan transek 2 x 2 m. Data Ekosistem mangrove di Sei Jang menggunakan data sekunder (dari penelitian sebelumnya). Mangrove yang ditemukan di Kelurahan Sei Jang merupakan vegetasi mangrove alami, dimana dibedakan atas 3 bagian yaitu Pohon, Anakan dan Semai. Potensi siput hisap (Cerithidea obtusa) pada lokasi penelitian di hutan mangrove Sei Jang Kelurahan Sei Jang dari nilai potensi yang di dapat adalah 10,5390 kg, nilai ini menunjukan bahwa potensi yang rendah. Rendahnya nilai kepadatan dan potensi siput hisap (Cerithidea obtusa) di hutan mangrove muara Sei Jang dari hasil penelitian diduga karena kandungan bahan organik substrat pada setiap titik stasiun penelitian masih rendah. Dan -
Moluscos Del Perú
Rev. Biol. Trop. 51 (Suppl. 3): 225-284, 2003 www.ucr.ac.cr www.ots.ac.cr www.ots.duke.edu Moluscos del Perú Rina Ramírez1, Carlos Paredes1, 2 y José Arenas3 1 Museo de Historia Natural, Universidad Nacional Mayor de San Marcos. Avenida Arenales 1256, Jesús María. Apartado 14-0434, Lima-14, Perú. 2 Laboratorio de Invertebrados Acuáticos, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Apartado 11-0058, Lima-11, Perú. 3 Laboratorio de Parasitología, Facultad de Ciencias Biológicas, Universidad Ricardo Palma. Av. Benavides 5400, Surco. P.O. Box 18-131. Lima, Perú. Abstract: Peru is an ecologically diverse country, with 84 life zones in the Holdridge system and 18 ecological regions (including two marine). 1910 molluscan species have been recorded. The highest number corresponds to the sea: 570 gastropods, 370 bivalves, 36 cephalopods, 34 polyplacoforans, 3 monoplacophorans, 3 scaphopods and 2 aplacophorans (total 1018 species). The most diverse families are Veneridae (57spp.), Muricidae (47spp.), Collumbellidae (40 spp.) and Tellinidae (37 spp.). Biogeographically, 56 % of marine species are Panamic, 11 % Peruvian and the rest occurs in both provinces; 73 marine species are endemic to Peru. Land molluscs include 763 species, 2.54 % of the global estimate and 38 % of the South American esti- mate. The most biodiverse families are Bulimulidae with 424 spp., Clausiliidae with 75 spp. and Systrophiidae with 55 spp. In contrast, only 129 freshwater species have been reported, 35 endemics (mainly hydrobiids with 14 spp. The paper includes an overview of biogeography, ecology, use, history of research efforts and conser- vation; as well as indication of areas and species that are in greater need of study. -
Molluscs (Mollusca: Gastropoda, Bivalvia, Polyplacophora)
Gulf of Mexico Science Volume 34 Article 4 Number 1 Number 1/2 (Combined Issue) 2018 Molluscs (Mollusca: Gastropoda, Bivalvia, Polyplacophora) of Laguna Madre, Tamaulipas, Mexico: Spatial and Temporal Distribution Martha Reguero Universidad Nacional Autónoma de México Andrea Raz-Guzmán Universidad Nacional Autónoma de México DOI: 10.18785/goms.3401.04 Follow this and additional works at: https://aquila.usm.edu/goms Recommended Citation Reguero, M. and A. Raz-Guzmán. 2018. Molluscs (Mollusca: Gastropoda, Bivalvia, Polyplacophora) of Laguna Madre, Tamaulipas, Mexico: Spatial and Temporal Distribution. Gulf of Mexico Science 34 (1). Retrieved from https://aquila.usm.edu/goms/vol34/iss1/4 This Article is brought to you for free and open access by The Aquila Digital Community. It has been accepted for inclusion in Gulf of Mexico Science by an authorized editor of The Aquila Digital Community. For more information, please contact [email protected]. Reguero and Raz-Guzmán: Molluscs (Mollusca: Gastropoda, Bivalvia, Polyplacophora) of Lagu Gulf of Mexico Science, 2018(1), pp. 32–55 Molluscs (Mollusca: Gastropoda, Bivalvia, Polyplacophora) of Laguna Madre, Tamaulipas, Mexico: Spatial and Temporal Distribution MARTHA REGUERO AND ANDREA RAZ-GUZMA´ N Molluscs were collected in Laguna Madre from seagrass beds, macroalgae, and bare substrates with a Renfro beam net and an otter trawl. The species list includes 96 species and 48 families. Six species are dominant (Bittiolum varium, Costoanachis semiplicata, Brachidontes exustus, Crassostrea virginica, Chione cancellata, and Mulinia lateralis) and 25 are commercially important (e.g., Strombus alatus, Busycoarctum coarctatum, Triplofusus giganteus, Anadara transversa, Noetia ponderosa, Brachidontes exustus, Crassostrea virginica, Argopecten irradians, Argopecten gibbus, Chione cancellata, Mercenaria campechiensis, and Rangia flexuosa). -
Moluscos Bivalvos Y Gastrópodos Asociados a Los Manglares Del Pacífico Centroamericano
Moluscos bivalvos y gastrópodos asociados a los manglares del Pacífico Centroamericano Jorge Arturo Jiménez§ Universidad Nacional, Costa Rica Los moluscos representan una alta diversidad en ambientes de manglar. La información relacionada con este grupo ha sido incorporada en una publicación adicional (Cruz y Jiménez, 1994). La distribución de las especies de moluscos dentro del manglar, muestra patrones espaciales claramente diferenciables que permiten dividir los manglares en tres zonas típicas: a) La zona estuarina Está compuesta por los canales mareales, por los playones que quedan al descubierto en las mareas bajas y por la laguna estuarina adyacente. En esta zona, los organismos viven inmersos en el agua constantemente y se exponen al aire por cortos períodos de tiempo. Las almejas Chione subrugosa y Protothaca asperrima se encuentran en los playones mareales de la zona estuarina. Gastrópodos carnívoros, tales como Melongena patula y Natica cheminitzii se constituyen en los moluscos predadores más importantes en estos playones. Por otra parte, la definición que describe al molusco como una especie típica de ambientes de manglar, se complica especialmente al analizar los elementos que se encuentran en la zona estuarina. Debido a sus características ecológicas, esta zona presenta una variedad de ambientes y, consecuentemente, gran cantidad de especies que también se encuentran en áreas alejadas del manglar 1 tales como bivalvos y gastrópodos, los cuales habitan bajo el lodo, las barras arenosas y las zonas rocosas de las desembocaduras de los estuarios o de las deltas que poseen manglares asociados. b) La zona externa del bosque Está influenciada por inundaciones mareales diarias. El componente arbóreo dominante se conforma de especies de los géneros Rhizophora y Reluciera. -
Chec List Marine and Coastal Biodiversity of Oaxaca, Mexico
Check List 9(2): 329–390, 2013 © 2013 Check List and Authors Chec List ISSN 1809-127X (available at www.checklist.org.br) Journal of species lists and distribution ǡ PECIES * S ǤǦ ǡÀ ÀǦǡ Ǧ ǡ OF ×±×Ǧ±ǡ ÀǦǡ Ǧ ǡ ISTS María Torres-Huerta, Alberto Montoya-Márquez and Norma A. Barrientos-Luján L ǡ ǡǡǡǤͶǡͲͻͲʹǡǡ ǡ ȗ ǤǦǣ[email protected] ćĘęėĆĈęǣ ϐ Ǣ ǡǡ ϐǤǡ ǤǣͳȌ ǢʹȌ Ǥͳͻͺ ǯϐ ʹǡͳͷ ǡͳͷ ȋǡȌǤǡϐ ǡ Ǥǡϐ Ǣ ǡʹͶʹȋͳͳǤʹΨȌ ǡ groups (annelids, crustaceans and mollusks) represent about 44.0% (949 species) of all species recorded, while the ʹ ȋ͵ͷǤ͵ΨȌǤǡ not yet been recorded on the Oaxaca coast, including some platyhelminthes, rotifers, nematodes, oligochaetes, sipunculids, echiurans, tardigrades, pycnogonids, some crustaceans, brachiopods, chaetognaths, ascidians and cephalochordates. The ϐϐǢ Ǥ ēęėĔĉĚĈęĎĔē Madrigal and Andreu-Sánchez 2010; Jarquín-González The state of Oaxaca in southern Mexico (Figure 1) is and García-Madrigal 2010), mollusks (Rodríguez-Palacios known to harbor the highest continental faunistic and et al. 1988; Holguín-Quiñones and González-Pedraza ϐ ȋ Ǧ± et al. 1989; de León-Herrera 2000; Ramírez-González and ʹͲͲͶȌǤ Ǧ Barrientos-Luján 2007; Zamorano et al. 2008, 2010; Ríos- ǡ Jara et al. 2009; Reyes-Gómez et al. 2010), echinoderms (Benítez-Villalobos 2001; Zamorano et al. 2006; Benítez- ϐ Villalobos et alǤʹͲͲͺȌǡϐȋͳͻͻǢǦ Ǥ ǡ 1982; Tapia-García et alǤ ͳͻͻͷǢ ͳͻͻͺǢ Ǧ ϐ (cf. García-Mendoza et al. 2004). ǡ ǡ studies among taxonomic groups are not homogeneous: longer than others. Some of the main taxonomic groups ȋ ÀʹͲͲʹǢǦʹͲͲ͵ǢǦet al. -
Atogenesis and Euspermatozoa in Cerithidea Obtusa (Lamarck 1822) (Caenogastropoda: Potamididae) Jintamas Suwanjarat*1 & Waltraud Klepal2
Ultrastructural Investigations of Eusperm- atogenesis and Euspermatozoa in Cerithidea obtusa (Lamarck 1822) (Caenogastropoda: Potamididae) Jintamas Suwanjarat*1 & Waltraud Klepal2 1 Department of Biology, Prince of Songkla University, Hat-Yai, Thailand 90110. 2 Institute of Zoology, University of Vienna, Althanstr. 14, A-1090 Vienna, Austria. *Author to whom correspondence should be addressed. E-mail: [email protected] Abstract Abstract. Species of the Potamididae occupy the full range of aquatic habitats and differ not only in the morphology and size of their shells but also in sperm morphology. In the past, several species were classified as Cerithiidae. Characters of the developing and the mature spermatozoa have been used to gain better insight into their taxonomy. Cerithidea obtusa (Lamarck 1822) is the most dominant brackish water gastropod of the mangrove forests in Southern Thailand. Spermatological data are scarce in this species. In order to confirm its taxonomic position within the Potamididae, euspermatogenesis and euspermatozoa are examined by transmission electron microscopy. The morphological changes during spermiogenesis such as nucleus condensation, acrosome formation and development of the midpiece are described. Problem The Potamididae is a large and important family of Cerithioidea which varies greatly in shell characters and shell size. Houbrick (1991) commented that because of the unawareness of the significant anatomical differences among cerithioidean gastropods many Potamididae were erroneously classified as Cerithiidae. In addition, many genera of each potamidid subfamily were mistaken for each other and for Cerithiidae. The modern classifications of prosobranchs, to which the Caenogastropoda belong, are generally achieved by light- and electron microscopy (Haszprunar, 1988). In particular, studies of mature spermatozoa and spermiogenesis have provided insight into characters which have become incorporated into prosobranch systematics (Franzén, 1955, 1970; Healy, 1988a). -
228100 N, Tomando El Camino De Los Conucos Hasta El Entronque
228100 N, tomando el camino de los Conucos hasta el entronque de Zapato en 101700 E, 231400 N, siguiendo por el camino de Zapato hasta el final en 100700 E, 231600 N, girando al N hasta el estero de Santa Catalina por el cual sale al mar en 100300 E, 234950 N, se continúa por la línea de costa hasta el nacimiento del estero Los Morros en 096800 E, 234900 N, el cual se dirige hasta el punto N de Barra Sorda en 094300 E, 235400 N, por la orilla NO de esta barra en su límite con los manglares hasta cruzar el camino de Faro Roncali al estero Palmarito en 091900 E, 231900 N, en dirección S a 150 m del terraplén del Sur hasta el Pantano de Caleta Larga en 092800 E, 229950 N, donde bordea el Pantano hasta 092600 E, 229850 N, siguiendo la línea recta virtual hasta 090800 E, 228750 N, punto inicial de este derrotero. • A los efectos de controlar adecuadamente las acciones que puedan repercutir negativamente sobre esta área protegida se establece una Zona de Amortiguamiento que comprende los 500 metros a partir del límite externo del área y que se indica en el Anexo Cartográfico. Anexo 3 Listado de especies de la flora Flora terrestre Flora marina División RHODOPHYTA Orden CORALLINALES Familia CORALLINACEA 1. Amphiroa beauvoisii Lamouroux 2. Amphiroa fragilissima (Linnaeus) Lamouroux 3. Amphiroa rigida Lamouroux 4. Haliptilon cubense (Montagne ex Kützing) Garbary et Johansen 5. Haliptilon subulatum (Ellis et Solander) Johansen 6. Hydrolithon farinosum (Lamouroux) Penrose et Chamberlain 7. Jania adhaerens Lamouroux 8. -
44-Sep-2016.Pdf
Page 2 Vol. 44, No. 3 In 1972, a group of shell collectors saw the need for a national organization devoted to the interests of shell collec- tors; to the beauty of shells, to their scientific aspects, and to the collecting and preservation of mollusks. This was the start of COA. Our member- AMERICAN CONCHOLOGIST, the official publication of the Conchol- ship includes novices, advanced collectors, scientists, and shell dealers ogists of America, Inc., and issued as part of membership dues, is published from around the world. In 1995, COA adopted a conservation resolution: quarterly in March, June, September, and December, printed by JOHNSON Whereas there are an estimated 100,000 species of living mollusks, many PRESS OF AMERICA, INC. (JPA), 800 N. Court St., P.O. Box 592, Pontiac, IL 61764. All correspondence should go to the Editor. ISSN 1072-2440. of great economic, ecological, and cultural importance to humans and Articles in AMERICAN CONCHOLOGIST may be reproduced with whereas habitat destruction and commercial fisheries have had serious ef- proper credit. We solicit comments, letters, and articles of interest to shell fects on mollusk populations worldwide, and whereas modern conchology collectors, subject to editing. Opinions expressed in “signed” articles are continues the tradition of amateur naturalists exploring and documenting those of the authors, and are not necessarily the opinions of Conchologists the natural world, be it resolved that the Conchologists of America endors- of America. All correspondence pertaining to articles published herein es responsible scientific collecting as a means of monitoring the status of or generated by reproduction of said articles should be directed to the Edi- mollusk species and populations and promoting informed decision making tor. -
Evolution, Distribution, and Phylogenetic Clumping of a Repeated Gastropod Innovation
Zoological Journal of the Linnean Society, 2017, 180, 732–754. With 5 figures. The varix: evolution, distribution, and phylogenetic clumping of a repeated gastropod innovation NICOLE B. WEBSTER1* and GEERAT J. VERMEIJ2 1Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E9 2Department of Earth and Planetary Sciences, University of California, Davis, CA 95616, USA Received 27 June 2016; revised 4 October 2016; accepted for publication 25 October 2016 A recurrent theme in evolution is the repeated, independent origin of broadly adaptive, architecturally and function- ally similar traits and structures. One such is the varix, a shell-sculpture innovation in gastropods. This periodic shell thickening functions mainly to defend the animal against shell crushing and peeling predators. Varices can be highly elaborate, forming broad wings or spines, and are often aligned in synchronous patterns. Here we define the different types of varices, explore their function and morphological variation, document the recent and fossil distri- bution of varicate taxa, and discuss emergent patterns of evolution. We conservatively found 41 separate origins of varices, which were concentrated in the more derived gastropod clades and generally arose since the mid-Mesozoic. Varices are more prevalent among marine, warm, and shallow waters, where predation is intense, on high-spired shells and in clades with collabral ribs. Diversification rates were correlated in a few cases with the presence of varices, especially in the Muricidae and Tonnoidea, but more than half of the origins are represented by three or fewer genera. Varices arose many times in many forms, but generally in a phylogenetically clumped manner (more frequently in particular higher taxa), a pattern common to many adaptations. -
Johannes Thiele and His Contributions to Zoology. Part 2. Genus-Group Names (Mollusca)
NEMOURIA Occasional Papers of the Delaware Museum of Natural History NUMBER 39 SEPTEMBER 30, 1991 JOHANNES THIELE AND HIS CONTRIBUTIONS TO ZOOLOGY. PART 2. GENUS-GROUP NAMES (MOLLUSCA) Kenneth J. Boss 1 and Rudiger Bieler2 ABSTRACT. This is the second part of a series on the German zoologist Johannes Thiele (1860-1935) and comprises a critical listing of the genus-group taxa which he described as new to malacology. Each of these names is accompanied by author and bibliographic references, original status, type-species with its original binominal spelling and bibliographic source and some data on subsequent taxonomic placements. Thiele introduced a total of 291 such names in the Phylum Mollusca, distributed as follows: 11 Aplacophora; 39 Polyplacophora; 200 Gastropoda (138 Prosobranchia; 20 Opisthobranchia and 42 Pulmonata); 31 Bivalvia; 10 Cephalopoda; there were no new scaphopod or monoplacophoran names. Of these, later authors recognized as valid 85 at the generic level, 110 at the subgeneric level; 71 are considered to be synonyms, and the remaining 25 are unjustified emendations or errors. INTRODUCTION As part of a series on the scientific contributions of Johannes Thiele, the eminent German zoologist, we provide here an alphabetical listing and analysis of all the genus-group taxa introduced by him in his publications on mollusks as delineated by Bieler & Boss (1989). A total of 291 names is included in the following format: (1) genus-group name; (2) author(s); (3) year of publication; (4) condensed bibliographic reference; (5) original status as given by Thiele; (6) subsequent status 1Museum of Comparative Zoology, Harvard University, Serial Publication Cambridge, Massachussetts 02138, U.S.A.