How to Identify Mussels
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WHELKS Scientific Names: Busycon Canaliculatum Busycon Carica
Colloquial Nicknames: Channeled Whelk Knobbed Whelk WHELKS Scientific names: Busycon canaliculatum Busycon carica Field Markings: The shell of open with their strong muscular foot. As both species is yellow-red or soon as the valves open, even the tiniest orange inside and pale gray amount, the whelk wedges in the sharp edge outside. of its shell, inserts the proboscis and Size: Channeled whelk grows up devours the soft body of the clam. to 8 inches long; knobbed whelk Mating occurs by way of internal grows up to 9 inches long and 4.5 inches wide fertilization; sexes are separate. The egg casing of the whelk is a Habitat: Sandy or muddy bottoms long strand of yellowish, parchment-like disks, resembling a Seasonal Appearance: Year-round necklace - its unique shape is sculpted by the whelk’s foot. Egg cases can be two to three feet long and have 70 to 100 capsules, DISTINGUISHING FEATURES AND each of which can hold 20 to 100 eggs. Newly hatched channeled BEHAVIORS whelks escape from small holes at the top of each egg case with Whelks are large snails with massive shells. The two most their shells already on. Egg cases are sometimes found along common species in Narragansett Bay are the knobbed whelk the Bay shoreline, washed up with the high tide debris. and the channeled whelk. The knobbed whelk is the largest marine snail in the Bay. It Relationship to People is pear-shaped with a flared outer lip and knobs on the shoulder Both channeled and knobbed whelks scavenge and hunt for of its shell. -
Pearly Mussels in NY State Susquehanna Watershed Paul H
Pearly mussels in NY State Susquehanna Watershed Paul H. Lord, Willard N. Harman & Timothy N. Pokorny Introduction Preliminary Results Discussion Pearly mussels (unionids) New unionid SGCN identified • Mobile substrates appear exacerbated endangered native mollusks in Susquehanna River Watershed by surge stormwater inputs • Life cycle complex • Eastern Pearlshell (Margaritifera margaritifera) - made worse by impervious surfaces - includes fish parasitism -- in Otselic River headwaters • Unionids impacted - involves watershed quality parameters Historical SGCN found in many locations by ↓O2, siltation, endocrine disrupting chemicals • 4 Species of Greatest Conservation Need • Regularly downstream of extended riffle - from human watershed use (SGCN) historically found • Require minimally mobile substrates • River location consistency with old maps in NY State Susquehanna Watershed • No observed wastewater treatment plant impact associated with ↑ unionids - Brook Floater (Alasmidonta varicosa) -adult unionids more easily observed - Green Floater (Lasmigona subviridis) Table 1. NYSDEC freshwater pearly mussel “species of greatest conservation need” (SGCN) observed in the Upper Susquehanna from kayaks - Yellow Lamp Mussel (Lampsilis cariosa) Watershed while mapping and searching rivers in the summers of 2008 Elktoe -Elktoe (Alasmidonta marginata) and 2009. Brook Floater = Alasmidonta varicosa; elktoe = Alasmidonta • Prior sampling done where convenient marginata; green floater = Lasmigona subviridis; yellow lamp mussel = - normally at intersection -
NAS - Nonindigenous Aquatic Species
green floater (Lasmigona subviridis) - FactSheet Page 1 of 5 NAS - Nonindigenous Aquatic Species Lasmigona subviridis (green floater) Mollusks-Bivalves Native Transplant Michelle Brown - Smithsonian Institution, National Museum of Natural History © Lasmigona subviridis Conrad, 1835 Common name: green floater Taxonomy: available through www.itis.gov Identification: This freshwater bivalve exhibits a somewhat compressed to slightly inflated thin shell that is subrhomboid to subovate in shape. The periostracum is yellow, tan, dark green, or brown with dark green rays, and the nacre is white or light blue and sometimes pink near the beaks. The height to width ratio is greater than 0.48 and the beaks are low compared to the line http://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=146 1/22/2016 green floater (Lasmigona subviridis) - FactSheet Page 2 of 5 of the hinge. There are two true lamellate pseudocardinal teeth and one relatively small interdental tooth in the left valve, as well as one long and thin lateral tooth in the right valve (Burch 1975, Peckarsky et al. 1993, Bogan 2002). Lasmigona subviridis can grow to 60–65 mm in length (Peckarsky et al. 1993, Bogan 2002). Size: can reach 65 mm Native Range: Lasmigona subviridis was historically found throughout the Atlantic slope drainages in the Hudson, Susquehanna, Potomac, upper Savannah, Kanawha-New, and Cape Fear rivers. However, its range has retracted and it now occurs as disjunct populations in headwaters of coastal and inland rivers and streams of these drainages (Burch 1975, Mills et al. 1993, King et al. 1999, Clayton et al. 2001). Puerto Rico & Alaska Hawaii Guam Saipan Virgin Islands Native range data for this species provided in part by NatureServe http://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=146 1/22/2016 green floater (Lasmigona subviridis) - FactSheet Page 3 of 5 Nonindigenous Occurrences: Lasmigona subviridis was recorded for the first time in the Lake Ontario drainage around 1959 in the Erie Barge Canal at Syracuse and in Chitenango Creek at Kirkville, New York. -
Growth Biorhythms in the Freshwater Pearl Mussel Margaritifera Margaritifera (Bivalvia, Margaritiferidae)
Knowl. Manag. Aquat. Ecosyst. 2018, 419, 44 Knowledge & © A.A. Zotin et al., Published by EDP Sciences 2018 Management of Aquatic https://doi.org/10.1051/kmae/2018033 Ecosystems www.kmae-journal.org Journal fully supported by Onema RESEARCH PAPER Growth biorhythms in the freshwater pearl mussel Margaritifera margaritifera (Bivalvia, Margaritiferidae). Livojoki river population (Karelia) Alexey A. Zotin1, Svetlana A. Murzina2,* and Evgeny P. Ieshko2 1 Koltsov Institute of Developmental Biology of the Russian Academy of Sciences, 26 Vavilov St., 119334 Moscow, Russia 2 Institute of Biology of the Karelian Research Centre of the Russian Academy of Sciences, 11 Pushkinskaya St., 185910 Petrozavodsk, Karelia Abstract – Individual linear growth rates were studied in freshwater pearl mussels Margaritifera margaritifera from the Livojoki River. Growth deceleration coefficients were shown to vary widely and differ significantly among individuals. The average value of the growth deceleration coefficient for the population is 0.060. The growth of mussels in the Livojoki River is accompanied by two regular biorhythms. These biorhythm periods were roughly constant both through an individual’s ontogeny and among mussels, their average periods were 7.16 and 4.09 years. We discuss the possibility that these biorhythms are of thermodynamic nature. Keywords: Margaritifera / Bivalvia / Karelia / growth / biorhythms Résumé – Bioryhtmes de croissance chez la moule perlière d’eau douce Margaritifera margaritifera (Bivalvia, Margaritiferidae). Population de la rivière Livojoki (Carélie). Les taux de croissance linéaire individuels ont été étudiés chez les moules perlières d’eau douce Margaritifera margaritifera de la rivière Livojoki. Les coefficients de ralentissement de la croissance varient considérablement d’une moule à l’autre. -
AEBR 114 Review of Factors Affecting the Abundance of Toheroa Paphies
Review of factors affecting the abundance of toheroa (Paphies ventricosa) New Zealand Aquatic Environment and Biodiversity Report No. 114 J.R. Williams, C. Sim-Smith, C. Paterson. ISSN 1179-6480 (online) ISBN 978-0-478-41468-4 (online) June 2013 Requests for further copies should be directed to: Publications Logistics Officer Ministry for Primary Industries PO Box 2526 WELLINGTON 6140 Email: [email protected] Telephone: 0800 00 83 33 Facsimile: 04-894 0300 This publication is also available on the Ministry for Primary Industries websites at: http://www.mpi.govt.nz/news-resources/publications.aspx http://fs.fish.govt.nz go to Document library/Research reports © Crown Copyright - Ministry for Primary Industries TABLE OF CONTENTS EXECUTIVE SUMMARY ....................................................................................................... 1 1. INTRODUCTION ............................................................................................................ 2 2. METHODS ....................................................................................................................... 3 3. TIME SERIES OF ABUNDANCE .................................................................................. 3 3.1 Northland region beaches .......................................................................................... 3 3.2 Wellington region beaches ........................................................................................ 4 3.3 Southland region beaches ......................................................................................... -
Os Nomes Galegos Dos Moluscos
A Chave Os nomes galegos dos moluscos 2017 Citación recomendada / Recommended citation: A Chave (2017): Nomes galegos dos moluscos recomendados pola Chave. http://www.achave.gal/wp-content/uploads/achave_osnomesgalegosdos_moluscos.pdf 1 Notas introdutorias O que contén este documento Neste documento fornécense denominacións para as especies de moluscos galegos (e) ou europeos, e tamén para algunhas das especies exóticas máis coñecidas (xeralmente no ámbito divulgativo, por causa do seu interese científico ou económico, ou por seren moi comúns noutras áreas xeográficas). En total, achéganse nomes galegos para 534 especies de moluscos. A estrutura En primeiro lugar preséntase unha clasificación taxonómica que considera as clases, ordes, superfamilias e familias de moluscos. Aquí apúntase, de maneira xeral, os nomes dos moluscos que hai en cada familia. A seguir vén o corpo do documento, onde se indica, especie por especie, alén do nome científico, os nomes galegos e ingleses de cada molusco (nalgún caso, tamén, o nome xenérico para un grupo deles). Ao final inclúese unha listaxe de referencias bibliográficas que foron utilizadas para a elaboración do presente documento. Nalgunhas desas referencias recolléronse ou propuxéronse nomes galegos para os moluscos, quer xenéricos quer específicos. Outras referencias achegan nomes para os moluscos noutras linguas, que tamén foron tidos en conta. Alén diso, inclúense algunhas fontes básicas a respecto da metodoloxía e dos criterios terminolóxicos empregados. 2 Tratamento terminolóxico De modo moi resumido, traballouse nas seguintes liñas e cos seguintes criterios: En primeiro lugar, aprofundouse no acervo lingüístico galego. A respecto dos nomes dos moluscos, a lingua galega é riquísima e dispomos dunha chea de nomes, tanto específicos (que designan un único animal) como xenéricos (que designan varios animais parecidos). -
Appertizers Soup
APPERTIZERS SPRING ROLLS (3 pcs) 5 THAI FISH CAKE Stuffed with vegetable and fried to a crisp served with plum sauce EDAMAME 5 Boiled soy bean tossed with sea salt SALT & PEPPER CALAMARI 10 Fried calamari tossed with salt, garlic, jalapeno, pepper, and scallion THAI CHICKEN WINGS (6 pcs) 8 Fried chicken wing tossed in tamarind sauce, topped with fried onion & cilantro CRAB CAKE (2 pcs) 10 Lump crab meat served with tartar sauce THAI FISH CAKE (TOD MUN PLA) (7 pcs) 9 STEAMED MUSSEL Homemade fish cake (curry paste, basil) served with sweet peanut&cucumber sauce STEAMED MUSSEL 10 Steamed mussel in spicy creamy lemongrass broth, kaffir lime leaves, basil leaves SHRIMP TEMPURA (3 pcs) 8 Shrimp, broccoli, sweet potato, & zucchini tempura served with tempura sauce GRILLED WHOLE SQUID 12 Served with spicy seafood sauce (garlic, lime juice, fresh chili, cilantro) GYOZA (5 pcs) 5 Fried or Steamed pork and chicken dumplings served with ponzu sauce SHRIMP SHUMAI (4 pcs) 6 CHICKEN SATAY Steamed jumbo shrimp dumplings served with ponzu sauce CHICKEN SATAY (5 pcs) 8 Grilled marinated chicken on skewers served with peanut & sweet cucumber sauce CRISPY CALAMARI 9 Fried calamari tempura served with sweet chili sauce SOFTSHELL CRAB APPERTIZER (2 pcs) 13 Fried jumbo softshell crab tempura served with ponzu sauce FRESH ROLL 7 Steamed shrimp, mint, cilantro, culantro, lettuce, carrot, basil leaves, rice noodle, wrapped with rice paper & served with peanut-hoisin sauce FRIED OYSTER (SERVED WITH FRIES) 10 FRESH ROLL FISH & CHIPS (SERVED WITH FRIES) 11 CRISPY -
Freshwater Mussels of the Pacific Northwest
Freshwater Mussels of the Pacifi c Northwest Ethan Nedeau, Allan K. Smith, and Jen Stone Freshwater Mussels of the Pacifi c Northwest CONTENTS Part One: Introduction to Mussels..................1 What Are Freshwater Mussels?...................2 Life History..............................................3 Habitat..................................................5 Role in Ecosystems....................................6 Diversity and Distribution............................9 Conservation and Management................11 Searching for Mussels.............................13 Part Two: Field Guide................................15 Key Terms.............................................16 Identifi cation Key....................................17 Floaters: Genus Anodonta.......................19 California Floater...................................24 Winged Floater.....................................26 Oregon Floater......................................28 Western Floater.....................................30 Yukon Floater........................................32 Western Pearlshell.................................34 Western Ridged Mussel..........................38 Introduced Bivalves................................41 Selected Readings.................................43 www.watertenders.org AUTHORS Ethan Nedeau, biodrawversity, www.biodrawversity.com Allan K. Smith, Pacifi c Northwest Native Freshwater Mussel Workgroup Jen Stone, U.S. Fish and Wildlife Service, Columbia River Fisheries Program Offi ce, Vancouver, WA ACKNOWLEDGEMENTS Illustrations, -
Key to the Freshwater Bivalves of New Jersey
Key to the Freshwater Bivalves of New Jersey 1. a. shell with a very sharp posterior ridge, shaped like the marine mussel, Mytilus, generally less than 30 mm, and attached to a hard substrate with byssal threads.........................……………........................Zebra mussel b. animal without byssal threads attaching adult to substrate, with or without teeth but not with the above shape................................….............................2 2. a. valves with cardinal teeth and two sets of lateral teeth.......................…...............................3 b. valves with one set of lateral teeth and pseudocardinal teeth or without teeth.............................................................................................................5 3. a. shell thick and sturdy, beak bulbous and curving anteriorly………………….Atlantic rangia b. shell moderately thick, beak not bulbous nor curving…………………………………………...4 4. a. valves with serrated lateral teeth......................................……….........................Asian clam b. valves with smooth lateral teeth....................................................................Fingernail clam 5. a. hinge teeth absent.................................................................................................................6 b. hinge teeth present..............................................................................................................10 6. a. beaks not projecting above the hinge line................…………………........ Paper pondshell b. beaks projecting above -
Transposed Hinge Structures in Lamellibranches
TRANSACTIONS OF THE • SAN DIEGO SOCIETY OF NATURAL HISTORY ,/ VoLUME VII, No. 26, pp. 299-318, plate 19 • TRANSPOSED HINGE STRUCTURES IN LAMELLIBRANCHS BY P. PoPENOE AND FINDLAY W. W. A. • Balch Graduate School of the Geological Sciences California Institute of Technology Pasadena, California SAN DIEGO, CALIFORNIA PRINTED FOR THE SOCIETY OCTOBER 6, 1933 • • COMMITTEE ON PUBLICATION U.S. GRANT, IV, Chairman FRED BAKER CLINTON G. ABBOTT, Editor • TRANSPOSED HINGE STRUCTURES IN LAMELLIBRANCHS 1 BY W. P. PoPENOE AND W. A. FINDLAY California Institute of Technology INTRODUCTION In the course of study of a collection of Eocene fossils from Claiborne Bluff, Alabama, the senior author of tl1is paper noticed two valves, one right and one left, of the lamellibranch Venericardia parva Lea, in whicl1 the dentition is partially transposed. Subsequently, the authors made an examination of more than five thousand lamellibranch valves, representit1g both recent and fossil shells, in search of further exa1nples of hinge-trans position. We have found a total number of twenty-six valves exhibiting this variation. Study of these specimens has revealed some hitherto unreported facts regarding the principles of hinge-transposition. Therefore in this paper, we shall describe and discuss these specimens, and shall present such con clusions as seem justified by the data assembled. Citations to the literature are made by author, date, and page, referring to the list at the end of the paper. DEFINITION OF T ERMS A transposed lamellibranch hinge is defined as one that exhibits in the right valve the hinge ele1nents normally occurring in the left valve, and vice-versa. -
Shellfish Hatchery
EAST HAMPTON TOWN SHELLFISH HATCHERY The 2015 Crew, left to right: Kate, Pete, Carissa, Shelby, and Barley 2015 ANNUAL REPORT AND 2016 OPERATING PLAN Prepared by Kate Rossi-Snook Edited by Barley Dunne East Hampton Town Shellfish Hatchery The skiff loaded for seeding in Lake Montauk Annual Report of Operations Mission Statement With a hatchery on Fort Pond Bay, a nursery on Three Mile Harbor, and a floating raft field growout system in Napeague Harbor, the East Hampton Town Shellfish Hatchery produces large quantities of oyster (Crassostrea virginica), clam (Mercenaria mercenaria), and bay scallop (Argopecten irradians) seed to enhance valuable shellfish stocks in local waterways. Shellfish are available for harvest by all permitted town residents. Cooperative research and experimentation concerning shellfish culture, the subsequent success of seed in the wild, and the status of the resource is undertaken and reported upon regularly, often funded and validated by scientific research grants. Educational opportunities afforded by the work include school group and open house tours and educational displays at community functions. Annual reporting includes production statistics and values, seed dissemination information, results of research initiatives, a summary of outreach efforts, the status of current and developing infrastructure, and a plan for the following year’s operations. 2015 Full-time Staff Part-time and Contractual Volunteers John “Barley” Dunne – Director Carissa Maurin – Environmental Aide Romy Macari Kate Rossi-Snook – Hatchery Manager Shelby Joyce – Environmental Aide (summer) Christopher Fox-Strauss Pete Topping – Algae Culturist Adam Younes – Environmental Aide (fall) Jeremy Gould – Maintenance Mechanic Carissa and Pete unloading OysterGros Special Thanks to: Barnaby Friedman for producing our annual seeding maps. -
Exputens) in Mexico, and a Review of All Species of This North American Subgenus
Natural History Museum /U, JH caY-^A 19*90 la Of Los Angeles County THE VELIGER © CMS, Inc., 1990 The Veliger 33(3):305-316 (July 2, 1990) First Occurrence of the Tethyan Bivalve Nayadina (.Exputens) in Mexico, and a Review of All Species of This North American Subgenus by RICHARD L. SQUIRES Department of Geological Sciences, California State University, Northridge, California 91330, USA Abstract. The malleid bivalve Nayadina (Exputens) has Old World Tethyan affinities but is known only from Eocene deposits in North America. Nayadina (Exputens) is reported for the first time from Mexico. About 50 specimens of N. (E.) batequensis sp. nov. were found in warm-water nearshore deposits of the middle lower Eocene part of the Bateque Formation, just south of Laguna San Ignacio, on the Pacific coast of Baja California Sur. The new species shows a wide range of morphologic variability especially where the beaks and auricles are located and how much they are developed. A review of the other species of Exputens, namely Nayadina (E.) llajasensis (Clark, 1934) from California and N. (E.) ocalensis (MacNeil, 1934) from Florida, Georgia, and North Carolina, revealed that they also have a wide range of morphologic variability. Nayadina (E.) alexi (Clark, 1934) is shown, herein, to be a junior synonym of N. (E.) llajasensis. The presence of a byssal sinus is recognized for the first time in Exputens. An epifaunal nestling mode of life, with attachment by byssus to hard substrate, can now be assumed for Exputens. INTRODUCTION species. It became necessary to thoroughly examine them, The macropaleontology of Eocene marine deposits in Baja and after such a study, it was found that the Bateque California Sur, Mexico, is largely an untouched subject.