DOCSLIB.ORG

Gastropoda: Pulmonata: Planorbidae)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

ZOOSYSTEMATICA ROSSICA, 18(1): 11-16 3 JULY 2009 Cuticular structures in the copulatory apparatus of Planorbis planorbis (Linnaeus, 1758) (Gastropoda: Pulmonata: Planorbidae) E.V. SOLDATENKO & A.A. PETROV E.V. Soldatenko, Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034, Russia; e-mail: [email protected] A.A. Petrov, Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034, Russia; e-mail: [email protected] The morphology of the copulatory apparatus and associated cuticular structures in Planorbis planorbis was studied by light microscopy, SEM, TEM and confocal laser scanning microscopy. The significance of these cuticular structures for the taxonomic status of the species and for the systematics of the family Planorbidae in general is discussed. Key words: molluscs, morphology, stylet, taxonomy, Planorbis INTRODUCTION tier, 1837), which have been described in details, have well-developed cuticularized Planorbis planorbis (Linnaeus, 1758) is stylet-like structures at the tip of the pe- one of the best known and most widely dis- nis (Baker, 1945; Hubendick, 1955, 1957; tributed species living in freshwater habitats Odhner, 1956; Hudec, 1967; Meier-Brook, in Europe. For most of the scientists of the 1983; Рrosorova & Starobogatov, 1997; Old World this species has become a model Soldatenko & Sitnikova, 2009). This for studying morphology, ecology, karyol- seem ingly exceptional status of P. planor- ogy, and physiology of the family Planorbi- bis suggests the possibility that the stylet dae Rafinesque, 1815 (Matzke, 1959; Ale- was overlooked in this species due to its kseev & Antipin, 1976; Stadnichenko, 1990; extremely small size. Costil & Daguzan, 1995). There is a large The purpose of this paper is to determine number of papers discussing the anatomy of whether or not P. planorbis has cuticular- P. planorbis (Baker, 1945; Hubendick, 1955; ized structures in the copulatory apparatus Starobogatov, 1958a, 1958b, 1967; Likharev and, thus, to further our understanding of & Starobogatov, 1967; Meier-Brook, 1976; the phylogenetic relationships within the Soldatenko & Starobogatov, 2000) that Planorbidae. dedicate special attention to the description of the reproductive system and, specifically, MATERIAL AND METHODS to the anatomy of the copulatory apparatus (the characters of the copulatory apparatus Material consisted of the samples of are widely used in planorbid systematics). P. planorbis in the collections of the Zoo- All authors agree that the penis lacks stylet logical Institute of Russian Academy of and the opening of vas deferens (spermatic Sceinces, St. Petersburg (ZISP) and of the duct) is terminal. specimens kept in the private collection of Planorbis seems to be the only genus the first co-author (EVS). The material within the tribe Planorbini Rafinesque, came from the following localities: 1815 (subfamily Planorbinae Rafinesque, ZISP 204; Leningrad Prov., Ivan-Gorod, 1815) that lacks penial stylet; all other a pool 1.5 km from the town near the house- members of this group of closely related hold plots, 15 June 1978; coll. Ya.I. Staro- genera (Anisus Studer, 1820; Armiger bogatov; ZISP 205; Ryazan Prov., 5 km from Hartmann, 1840; Choanomphalus Gerst- Kleniki, Pra R., May 1979; coll. M.N. Za- feldt 1852; Gyraulus Agassiz in Charpen- travkin; © 2009 Zoological Institute, Russian Academy of Scienсes 12 E.V. SOLDATENKO & A.A. PETROV. COPULATORY APPARATUS OF PLANORBIS PLANORBIS Fig. 1. Copulatory apparatus of Planorbis planorbis: a – general view; b – diagrammatic represen- tation of longitudinal section through penial sac and upper part of prepucium; c – diagrammatic representation of penial sac (enlarged view of b). ovd – opening of vas deferens; pe – penis; pr – pre- pucium; ps – penial sac; r – retractor; s – stylet; sa – sarcobellum; v – velum; vas – vas deferens. Scale bars: a – 1 mm; b, c – 100 μm. EVS; Smolensk Prov., Demidovskiy studied and then their copulatory appa- Distr., at Przhevalskoye, a branch of Mut- rates were removed for further examination noye-Rytoye L., 24 June 1999; coll. E.V. (Fig. 1a-c). The extracted copulatory ap- Soldatenko; parates and their fragments were examined EVS; Smolensk Prov., Demidovskiy using different methods. Distr., at Przhevalskoye, Sapsho L., 4 July Sixteen specimens were prepared as un- 1994; coll. E.V. Soldatenko; stained whole mounts. These whole-mount EVS; Leningrad Prov., Pavlovsk, Pav- preparations were examined and photo- lovsky Park, Slavyanka R., 29 July 2008; graphed on a Leica DMLS-2 microscope coll. E.V. Soldatenko. equipped with a CCD camera; the line Twenty five adult specimens were dis- drawings were copied from photographs ac- sected, their internal organization was cording to their original proportions. © 2009 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 18(1): 11-16 E.V. SOLDATENKO & A.A. PETROV. COPULATORY APPARATUS OF PLANORBIS PLANORBIS 13 Five specimens were prepared for scan- ward the apex. The opening of vas deferens ning electron microscopy. Each extracted is subterminal and lies approximately 10- penis was dehydrated in ethanol, air dried 15 μm from the tip of the penis. The distal for 20 min in hexamethyldisilazane (Bock, end of vas deferens opens into a furrow on 1987), and then coated with platinum in a the concave surface of the lamella; the fur- HITACHI IB-5 ion sputter. The distal ends row runs along the middle of the lamella, fol- of the penises were viewed on a HITACHI lowing its curve, and ends near the tip of the S-570 scanning electron microscope. lamella on the inner side of the curve (Fig. For confocal microscopy, two specimens 2a). The shape of the lamella is consistent were fixed in 4% paraformaldehyde in 0.1M with that of a plate-like cuticular stylet. PBS for 1 h at room temperature, rinsed in Light microscopy of unstained whole 0.1M PBS (3 times for 15 min), permeabi- mounts reveals a cuticular layer, more evi- lized for 1 h in PBS containing 0.2% Tri- dent at the tip of the penis and extending ton X-100, rinsed again shortly in the same into more proximal portions of the penis. buffer and then transferred to phalloidin- The furrow is clearly visible (Fig. 2b). Light TRITC (Sigma) for 1 h. After that, the spec- microscopy could not confirm or disprove imens were washed again 3 times for 15 min the presence of a cuticular stylet; however, in the same buffer, mounted in 80% glycerol the pointed shape of the penis tip indicates on glass slides, and viewed on a Leica TSC that it might be rigid in structure. SP5 microscope. The presence of the stylet in P. planorbis For anatomical observations, serial was confirmed by fluorescence microscopy semi-thin sections of extracted copulatory using phalloidin-TRITC staining. Phalloi- apparates were stained with toluidine blue din specifically binds filamentous actin and and then viewed and photographed on an reveals cell outlines (actin cytoskeleton), Amplival and Leica DM LS-2 microscopes. leaving cuticular structures unstained. For TEM study, a standard double fixa- Fig. 2c shows the bright-field image (left) tion in glutaraldehyde and osmium tetrox- and corresponding phalloidin fluorescence ide was used. Samples were initially fixed image (right) of one optical section through in 2.5% glutaraldehyde in 0.1 M phosphate the penis. The tip of the penis is clearly seen buffer (pH 7.2-7.4) for 2-4 h or were kept on the bright-field image; cell outlines on in fixative for several months. The sam- the fluorescence image are visible along the ples were then washed in several changes entire length of the penis, but the penis tip of 0.2 M phosphate buffer, postfixed in remains unstained. This might be an indica- 2% osmium tetroxide in 0.1 M phosphate tion that the tip of the penis bears a struc- buffer for 12 h to overnight, dehydrated in ture (the stylet) composed primarily of ex- graded ethanol or acetone series, and finally tracellular matrix material. The exact size of embedded in an araldite mixture. Serial ul- the stylet is difficult to determine, because trathin sections were obtained on a Leica the stylet may be partly surrounded with UC-6 ultramicrotome, stained with uranyl soft tissues. acetate and lead citrate, and examined on a The ultra-thin sections through the pe- LEO-900 transmission electron microscope nis tip studied with TEM confirm that the at 50-80 kV. stylet, despite its small size, has a complex shape and structure. The stylet itself is an RESULTS internal cuticular apodeme, ending some- what below the penis tip, and, just as the rest SEM images of the distal end of the penis of the penis, covered on the outside with a in P. planorbis show that the tip of the penis thin, somewhat corrugated, cuticle, a deriv- bears a trough-shaped lamella. The lamella ative of the epithelial cells of the penis (Fig. is slightly curved and conically tapering to- 2d, 2e). The length of the stylet is 7-10 μm. © 2009 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 18(1): 11-16 14 E.V. SOLDATENKO & A.A. PETROV. COPULATORY APPARATUS OF PLANORBIS PLANORBIS Fig. 2. Penis of Planorbis planorbis: a – SEM; b – light micrograph of whole mount; c – confocal mi- crographs: bright-field (left), phalloidin-stained (right). Images are mirror-reversed for easier com- parison; d, e – TEM. ce – cuticular epithelium; mw – muscular wall of penial sac; ovd – opening of vas deferens; pe – penis; s – stylet. Scale bars: a – 30 μm, b – 50 μm, c – 25 μm, d – 5 μm, e – 1 μm. © 2009 Zoological Institute, Russian Academy of Scienсes, Zoosystematica Rossica 18(1): 11-16 E.V. SOLDATENKO & A.A. PETROV. COPULATORY APPARATUS OF PLANORBIS PLANORBIS 15 DISCUSSION ACKNOWLEDGMENTS Previous morphological descriptions of The ZISP collections used for this study P. planorbis (Baker, 1945; Hubendick, 1955; are supported by Rosnauka for UFC no.
Recommended publications
  • Gyraulus Laevis in Nederland 87

    Gyraulus Laevis in Nederland 87

    Kuijper: Gyraulus laevis in Nederland 87 Gyraulus laevis (Mollusca: Planorbidae) in Nederland door W.J. Kuijper Enkele recente waarnemingen van een van onze zeldzaamste planorbiden waren de aanleiding tot het samenstellen van een over- laevis zicht van alle van Nederland bekende vondsten van Gyraulus (Alder, 1838). Tot voor kort waren slechts enkele vindplaatsen van dit dier bekend (Janssen & De Vogel, 1965: 75). Hierbij komt het betrof feit dat het in een aantal gevallen slechts een enkel exemplaar en de soort niet meer teruggevonden kon worden. Het volgende geeft een chronologisch overzicht van de waarnemingen van Gyraulus laevis in Nederland. Voor zover beschikbaar zijn diverse gegevens van de vindplaatsen vermeld. WAARNEMINGEN 1. Koudekerke (bij Middelburg), buitenplaats Vijvervreugd, ± 1890. Fraai vers materiaal: 69 exemplaren in de collectie Schep- de man (Zoölogisch Museum, Amsterdam). Later niet meer vermeld, buitenplaats bestaat niet meer (Kuiper, 1944: 6). Dit materiaalwerd verzameld door Dr. IJ. Keijzer en is vermeld in: Verslag over 1885-1893 van het Zeeuwsch Genootschap der Wetenschappen, blz. 88 (volgens Mevr. Dr. W.S.S. van der Feen - van Benthem Jut- ting). Verder is materiaal van deze vindplaats in de collecties van het Zeeuwsch Museum te Middelburg (2 ex.) en het Natuurhistorisch Museum te Enschede (6 ex.) aanwezig. 2. Warmond (bij Leiden), in de Leede, januari 1916 (Van Ben- them Jutting, 1933: 179). Dit materiaal werd verzameld door P.P. de Koning; in het Rijksmuseum van Natuurlijke Historie te Leiden bevinden zich vier schelpen van deze vindplaats, waarvan twee een doorsnede van ca. 4 mm bereiken. 3. 't Zand (bij Roodeschool), Oostpolder, 1927 (Van Benthem Jutting, 1947: 66).
  • Gyraulus) Gilberti (Dunker, 1848

    Gyraulus) Gilberti (Dunker, 1848

    Gyraulus (Gyraulus) gilberti (Dunker, 1848) Diagnostic features The peripheral keel or angulation is weaker than in G. edgbastonensis, and like that species it is central. This species varies widely in degree of depression and angulation, and Gyraulus (Gyraulus) gilberti (adult size 4.8-5.5 mm) Distribution of Gyraulus (Gyraulus) gilberti. development of spiral sculpture. Classification Gyraulus (Gyraulus) gilberti (Dunker, 1848) Class Gastropoda I nfraclass Heterobranchia Megaorder Hygrophila Order Lymnaeida Superfamily Planorboidea Family Planorbidae Subfamily: Planorbinae Genus Gyraulus Charpentier, 1837 Original name: Planorbis gilberti Dunker, A.G. (1848). Dunker, A.G. (1848). Diagnoses specierum novarum generis Planorbis collection is Cumingianae. Proceedings of the Zoological Society London 1848: 40-43. Type locality: Brisbane district, Queensland. Synonyms: Planorbis macquariensis Smith, 1883; Planorbis fragilis Smith, 1883 (non Dunker, 1850); Planorbis brazieri Clessin, 1885 (replacement name for P. fragilis Smith); Planorbis planissimus Clessin, 1885; Planorbis daemeli Clessin, 1885; Glyptanisus idenusredale, 1943; Glyptanisus stabilis redale, 1943; Glyptanisus speranusredale, 1943. Biology and ecology This species lives in water weeds and other vegetation in ponds, billabongs, swamps and sluggish streams and rivers in tropical and subtropical eastern Australia. Feeds on detritus. Egg mass presumably a jelly strip containing small eggs. Development direct. Brown (2001) described the anatomy of this species. This species is an intermediate host for the stomach fluke Orthocoelium streptocoelium (Boray, 1982; Beesley et al., 1998). Distribution This species occurs throughout eastern Australia, from Cape York to northern New South Wales. Notes G. isingi and/or G.waterhousei may possibly be conspecific with this species (Brown, 2001). Further reading Beesley, P. L., Ross, G. J.
  • Anisus Vorticulus (Troschel 1834) (Gastropoda: Planorbidae) in Northeast Germany

    Anisus Vorticulus (Troschel 1834) (Gastropoda: Planorbidae) in Northeast Germany

    JOURNAL OF CONCHOLOGY (2013), VOL.41, NO.3 389 SOME ECOLOGICAL PECULIARITIES OF ANISUS VORTICULUS (TROSCHEL 1834) (GASTROPODA: PLANORBIDAE) IN NORTHEAST GERMANY MICHAEL L. ZETTLER Leibniz Institute for Baltic Sea Research Warnemünde, Seestr. 15, D-18119 Rostock, Germany Abstract During the EU Habitats Directive monitoring between 2008 and 2010 the ecological requirements of the gastropod species Anisus vorticulus (Troschel 1834) were investigated in 24 different waterbodies of northeast Germany. 117 sampling units were analyzed quantitatively. 45 of these units contained living individuals of the target species in abundances between 4 and 616 individuals m-2. More than 25.300 living individuals of accompanying freshwater mollusc species and about 9.400 empty shells were counted and determined to the species level. Altogether 47 species were identified. The benefit of enhanced knowledge on the ecological requirements was gained due to the wide range and high number of sampled habitats with both obviously convenient and inconvenient living conditions for A. vorticulus. In northeast Germany the amphibian zones of sheltered mesotrophic lake shores, swampy (lime) fens and peat holes which are sun exposed and have populations of any Chara species belong to the optimal, continuously and densely colonized biotopes. The cluster analysis emphasized that A. vorticulus was associated with a typical species composition, which can be named as “Anisus-vorticulus-community”. In compliance with that both the frequency of combined occurrence of species and their similarity in relative abundance are important. The following species belong to the “Anisus-vorticulus-community” in northeast Germany: Pisidium obtusale, Pisidium milium, Pisidium pseudosphaerium, Bithynia leachii, Stagnicola palustris, Valvata cristata, Bathyomphalus contortus, Bithynia tentaculata, Anisus vortex, Hippeutis complanatus, Gyraulus crista, Physa fontinalis, Segmentina nitida and Anisus vorticulus.
  • Freshwater Snail Guide

    Freshwater Snail Guide

    A Beginner’s Guide to Freshwater Snails of Central Scotland Freshwater snails are a diverse and fascinating group of molluscs found in ponds, lochs, canals, rivers and watery ditches all across the globe. This guide is a simple introduction to some of the most commonly encountered and easily identifiable freshwater snail species in Central Scotland. How do I look for freshwater snails? 1) Choose your spot: anywhere with water – your garden pond, a nearby river, canal or loch – is likely to have snails. 2) Grab a pond net (buy online or make your own by attaching a sieve to the end of an old broom or mop), a white tray or tub and a hand-lens or magnifier. 3) Fill the tray with water from your chosen habitat. Sweep the net around in the water, making sure to get among any vegetation (don’t go too near the bottom or you’ll get a net full of mud), empty your net into the water-filled tray and identify what you have found! Snail shell features Spire Whorls Some snail species have a hard plate called an ‘operculum’ Height which they Mouth (Aperture) use to seal the mouth of the shell when they are inside Height Pointed shell Flat shell Width Width Pond Snails (Lymnaeidae) Variable in size. Mouth always on right-hand side, shells usually long and pointed. Great Pond Snail Common Pond Snail Lymnaea stagnalis Radix balthica Largest pond snail. Common in ponds Fairly rounded and ’fat’. Common in weedy lakes, canals and sometimes slow river still waters. pools.
  • Folk Taxonomy, Nomenclature, Medicinal and Other Uses, Folklore, and Nature Conservation Viktor Ulicsni1* , Ingvar Svanberg2 and Zsolt Molnár3

    Folk Taxonomy, Nomenclature, Medicinal and Other Uses, Folklore, and Nature Conservation Viktor Ulicsni1* , Ingvar Svanberg2 and Zsolt Molnár3

    Ulicsni et al. Journal of Ethnobiology and Ethnomedicine (2016) 12:47 DOI 10.1186/s13002-016-0118-7 RESEARCH Open Access Folk knowledge of invertebrates in Central Europe - folk taxonomy, nomenclature, medicinal and other uses, folklore, and nature conservation Viktor Ulicsni1* , Ingvar Svanberg2 and Zsolt Molnár3 Abstract Background: There is scarce information about European folk knowledge of wild invertebrate fauna. We have documented such folk knowledge in three regions, in Romania, Slovakia and Croatia. We provide a list of folk taxa, and discuss folk biological classification and nomenclature, salient features, uses, related proverbs and sayings, and conservation. Methods: We collected data among Hungarian-speaking people practising small-scale, traditional agriculture. We studied “all” invertebrate species (species groups) potentially occurring in the vicinity of the settlements. We used photos, held semi-structured interviews, and conducted picture sorting. Results: We documented 208 invertebrate folk taxa. Many species were known which have, to our knowledge, no economic significance. 36 % of the species were known to at least half of the informants. Knowledge reliability was high, although informants were sometimes prone to exaggeration. 93 % of folk taxa had their own individual names, and 90 % of the taxa were embedded in the folk taxonomy. Twenty four species were of direct use to humans (4 medicinal, 5 consumed, 11 as bait, 2 as playthings). Completely new was the discovery that the honey stomachs of black-coloured carpenter bees (Xylocopa violacea, X. valga)were consumed. 30 taxa were associated with a proverb or used for weather forecasting, or predicting harvests. Conscious ideas about conserving invertebrates only occurred with a few taxa, but informants would generally refrain from harming firebugs (Pyrrhocoris apterus), field crickets (Gryllus campestris) and most butterflies.
  • (Gastropoda) with a Rhipidoglossate Radula

    (Gastropoda) with a Rhipidoglossate Radula

    Org Divers Evol (2011) 11:201–236 DOI 10.1007/s13127-011-0048-0 ORIGINAL ARTICLE Interactive 3D anatomy and affinities of the Hyalogyrinidae, basal Heterobranchia (Gastropoda) with a rhipidoglossate radula Gerhard Haszprunar & Erika Speimann & Andreas Hawe & Martin Heß Received: 25 January 2011 /Accepted: 26 May 2011 /Published online: 19 June 2011 # Gesellschaft für Biologische Systematik 2011 Abstract Whereas Hyalogyrina Marshall, 1988 was already on the rhipidoglossate, i.e. the ‘archaeogastropod’, originally considered a skeneid vetigastropod, the family level of evolution. Ectobranchia are considered the first Hyalogyrinidae Warén & Bouchet, 1993 has later been extant offshoot of the Heterobranchia; implications for the classified as basal Heterobranchia despite their rhipidoglossate stem species of the latter are outlined. radula. In order to evaluate this placement and to shed more light on the origin of all higher Gastropoda, we investigated Keywords Gastropoda . Ectobranchia . Hyalogyrinidae . five representatives of all three nominal hyalogyrinid genera Interactive 3D anatomy. Systematics . Phylogeny. by means of semithin serial sectioning and computer-aided Heterobranchia 3D reconstruction of the respective anatomy, which we present in an interactive way. In general the morphological features (shell, external morphology, anatomy) fully confirm Introduction the placement of Hyalogyrinidae in the Heterobranchia, but in particular the conditions of the genital system vary During the last 25 years major progress has been made in substantially within the family. The ectobranch gill of our understanding of the origin of the higher gastropods, Hyalogyrinidae is shared with Valvatidae, Cornirostridae, i.e. the allogastropod, opisthobranch and pulmonate taxa, the and Xylodisculidae; consequently all these families are latter two of which are commonly united as Euthyneura.
  • Mollusca) 263-272 © Biologiezentrum Linz/Austria; Download Unter

    Mollusca) 263-272 © Biologiezentrum Linz/Austria; Download Unter

    ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Linzer biologische Beiträge Jahr/Year: 2003 Band/Volume: 0035_1 Autor(en)/Author(s): Mitov Plamen Genkov, Dedov Ivailo K., Stoyanov Ivailo Artikel/Article: Teratological data on Bulgarian Gastropoda (Mollusca) 263-272 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Linzer biol. Beitr. 35/1 263-272 30.6.2003 Teratological data on Bulgarian Gastropoda (Mollusca) P. MlTOV, I. DEDOV & I. STOYANOV Abstract: During faunistic investigations in diverse regions of Bulgaria, 8 gastropod specimens (6 species) with diverse morphological anomalies of the shell and body were found. These include specimens of: 1) Rapana venosa (VALENCIENNES 1846) with atypical, high-conic (scalarid) shells; 2) Planorbis planorbis (LINNAEUS 1758) with an aberrantly (deviation from the coiling surface) coiled shell; 3) Stagnicola palustris (O. F. MÜLLER 1774) with an entirely uncoiled shell; 4) Laciniaria plicata (DRAPARNAUD 1801) with abnormally uncoiled last whorl accompanied with a bend of the axis of the shell spires; 5) Umax {Umax) punctulatus SORDELLI 1870 with an abnormal formation of the posterior part of foot; and 6) Helix pomatia rhodopensis KOBELT 1906 with an oddly shaped ommathophore. These observations are attributed to mechanical injuries (traumatic or caused by parasite invasion trough the mantle), genetic anomalies, atavisms, and regenerative processes. Key words: Gastropoda, anomalies, Bulgaria. Introduction In the malacological literature, many anomalies of the shell (ROSSMÄSSLER 1835, 1837, 1914, SIMROTH 1908, 1928, SLAVI'K 1869, ULICNY 1892, FRANKENBERGER 1912, GEYER 1927, KNIGHTA 1930, PETRBOK 1939, 1943, DUCHON 1943, SCHILDER & SCHILDER 1953 (after KOVANDA 1956), ROTARIDES & SCHLESCH 1951, KOVANDA 1956, JACKIEWICZ 1965, PETRUCCIOLI 1996 among others), the body (SIMROTH 1908 among others), and the radulae (BECK 1912 (after SIMROTH 1908), BOR et al.
  • WOODLAND PONDS AS an IMPORTANT HABITAT of Hippeutis Complanatus (Linnaeus 1758) OCCURRENCE - EFFECT of ENVIRONMENTAL FACTORS and HABITAT PREFERENCES

    WOODLAND PONDS AS an IMPORTANT HABITAT of Hippeutis Complanatus (Linnaeus 1758) OCCURRENCE - EFFECT of ENVIRONMENTAL FACTORS and HABITAT PREFERENCES

    Ekológia (Bratislava) Vol. 33, No. 2, p. 101–115, 2014 doi:10.2478/eko-2014-0011 WOODLAND PONDS AS AN IMPORTANT HABITAT OF Hippeutis complanatus (Linnaeus 1758) OCCURRENCE - EFFECT OF ENVIRONMENTAL FACTORS AND HABITAT PREFERENCES ANETA SPYRA Department of Hydrobiology, Faculty of Biology and Environmental Protection University of Silesia, Bankowa 9, 40-007 Katowice, Poland; e-mail: [email protected] Abstract Spyra A.: Woodland ponds as an important habitat of Hippeutis complanatus (Linnaeus 1758) occurrence – effect of environmental factors and habitat preferences. Ekológia (Bratislava), Vol. 33, No. 2, p. 101–115, 2014. In industrial areas, woodland ponds are refuges of biological diversity. The impact of environ- mental factors such as the physico-chemical properties of water, organic matter content in bottom sediments and various types of substratum on the occurrence of Hippeutis complanatus were asse- ssed. In Poland, it is considered to be a species with an established but unspecified risk, deserving the status of endangered species due to the decline of wetland environments. A Canonical Corre- spondence Analysis (CCA) revealed associations between the distribution patterns of freshwater snails species and the concentration of nitrates (NO3) and calcium (Ca) as well as pH and the organic matter content in the bottom sediments. Based on statistical relationships, results of study suggest that the kind of substratum (Typha latifolia remains, Phragmites australis remains, fallen leaves of waterside trees) has an impact on the occurrence of freshwater snails including Hippeutis complanatus for which the preferred substratum is the fallen leaves of waterside trees and sites with a high content of organic matter in bottom sediments.
  • Prerequisites for Flying Snails: External Transport Potential of Aquatic Snails by Waterbirds Author(S): C

    Prerequisites for Flying Snails: External Transport Potential of Aquatic Snails by Waterbirds Author(S): C

    Prerequisites for flying snails: external transport potential of aquatic snails by waterbirds Author(s): C. H. A. van Leeuwen and G. van der Velde Source: Freshwater Science, 31(3):963-972. 2012. Published By: The Society for Freshwater Science URL: http://www.bioone.org/doi/full/10.1899/12-023.1 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Freshwater Science, 2012, 31(3):963–972 ’ 2012 by The Society for Freshwater Science DOI: 10.1899/12-023.1 Published online: 17 July 2012 Prerequisites for flying snails: external transport potential of aquatic snails by waterbirds 1,2,3,5 2,4,6 C. H. A. van Leeuwen AND G. van der Velde 1 Department of Aquatic
  • Ecology and Species Composition of Molluscs in Upstream of the Kor River System, with Two New Records for the Fars Province, Iran

    Ecology and Species Composition of Molluscs in Upstream of the Kor River System, with Two New Records for the Fars Province, Iran

    Journal of Wildlife and Biodiversity 3(2): 29-39 (2019) (http://jwb.araku.ac.ir/) Research Article DOI: 10.22120/jwb.2019.105850.1062 Ecology and species composition of Molluscs in upstream of the Kor River System, with two new records for the Fars Province, Iran including total dissolved solids, electrical 1 2 Fatemeh Abbaspour , Sareh Yaripour , conductivity, and the water current velocity. Peter Gloeer3, Mehrdad Zamanpoore4* Mean annual current velocity was lowest in station 2, having the highest temporal 1Department of Hydrobiology, Agricultural fluctuation, while total dissolved solids Research, Education and Extension Organization, Fars Centre, Shiraz, IRAN drastically increased in lower reach (stations 4 2Department of Environmental and Biological and 5), with the lowest fluctuations. Sciences, University of Eastern Finland, P.O. Keywords: Aquatic invertebrates, conchology, Box 111, FI-80101 Joensuu, Finland stream ecology, Zagros Mountains. 3Biodiversity Research Lab, Schulstr. 3, D- 25491 Hetlingen, Germany Introduction 4 Agricultural Research, Education and Molluscs are a common group of Extension Organization, Fars Center, macrozoobenthic invertebrates in aquatic Department of Hydrobiology *email: [email protected] ecosystems. They are found in shallow water, streams, rivers, ponds and lakes. They have Received: 6 April 2019 / Revised: 16 April 2019 / Accepted: 23 significant functions in food webs and April 2019 / Published online: 24 April 2019. Ministry of Sciences, Research and Technology, Arak University, Iran. ecosystem equilibrium such as nutrient cycling, biofiltration and storage (Vaughn 2017). Abstract However, like many other aquatic organisms, they are threatened by various environmental The scientific literature on molluscans stresses, including drought, habitat degradation, taxonomy in Iran goes back to many years ago; dam constructions, pollution, channel however, in some parts of the country like modification, siltation and introduction of non- southern areas, it is completely new.
  • Ram's Horn Snail)

    Ram's Horn Snail)

    НАУЧНИ ТРУДОВЕ НА РУСЕНСКИЯ УНИВЕРСИТЕТ - 2012, том 51, серия 9.2 Acute toxicity of some spirohydantoins and their derivatives towards Planorbis planorbis (Ram's Horn Snail) Marin Marinov, Donyo Ganchev, Petja Marinova, Stefan Krustev, Plamen Penchev, Milena Zlateva, Nadezhda Atanasova, Neyko Stoyanov Acute toxicity of some spirohydantoins and their derivatives towards Planorbis planorbis (Ram's Horn Snail): The article represent an investigation with freshwater snail (Planorbis planorbis) for revealing the eventual acute toxic effect of cyclopentanespiro-5-hydantoin, cyclohexanespiro-5-hydantoin, cyclopentanespiro-5-(2,4-dithiohydantoin) and 1-aminocyclopentanecarboxylic acid. Planorbis species are very common air-breathing freshwater snails in Europe. They are commonly used as species for ecotoxicological test in order to be determined the eventual deleterious action of chemicals on freshwater invertebrates. Key words: Planorbis planorbis, Spirohydantoins. INTRODUCTION Planorbis planorbis (Ram's Horn Snail) is a species of air-breathing freshwater snail, an aquatic gastropod mollusk in the family Planorbidae. It is one of the most common freshwater snails in Europe, occurs in numerous water body types with a preference for standing water such as ponds, swamps or lakes with slow moving or stagnant waters. As typical freshwater invertebrate it is commonly used as test species for ecotoxicological investigations of various chemicals including pesticides [1, 2]. The aim of this study is to be reveal the acute toxicity of cyclopentanespiro-5- hydantoin (CPSH), cyclohexanespiro-5-hydantoin (CHSH), cyclopentanespiro-5-(2,4- dithiohydantoin) (CPSDTH) and 1-aminocyclopentanecarboxylic acid (ACPCA) towards Planorbis planorbis. RESULTS AND DISCUTIONS 1. Test animals Naturally occurring freshwater Planorbis planorbis individuals were collected from lake Srebarna, Bulgaria.
  • The Freshwater Gastropods of Nebraska and South Dakota: a Review of Historical Records, Current Geographical Distribution and Conservation Status

    The Freshwater Gastropods of Nebraska and South Dakota: a Review of Historical Records, Current Geographical Distribution and Conservation Status

    THE FRESHWATER GASTROPODS OF NEBRASKA AND SOUTH DAKOTA: A REVIEW OF HISTORICAL RECORDS, CURRENT GEOGRAPHICAL DISTRIBUTION AND CONSERVATION STATUS By Bruce J. Stephen A DISSERTATION Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Doctor of Philosophy Major: Natural Resources Sciences (Applied Ecology) Under the Supervision of Professors Patricia W. Freeman and Craig R. Allen Lincoln, Nebraska December, 2018 ProQuest Number:10976258 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. ProQuest 10976258 Published by ProQuest LLC ( 2018). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States Code Microform Edition © ProQuest LLC. ProQuest LLC. 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, MI 48106 - 1346 THE FRESHWATER GASTROPODS OF NEBRASKA AND SOUTH DAKOTA: A REVIEW OF HISTORICAL RECORDS, CURRENT GEOGRAPHICAL DISTRIBUTION AND CONSERVATION STATUS Bruce J. Stephen, Ph.D. University of Nebraska, 2018 Co–Advisers: Patricia W. Freeman, Craig R. Allen I explore the historical and current distribution of freshwater snails in Nebraska and South Dakota. Current knowledge of the distribution of species of freshwater gastropods in the prairie states of South Dakota and Nebraska is sparse with no recent comprehensive studies. Historical surveys of gastropods in this region were conducted in the late 1800's to the early 1900's, and most current studies that include gastropods do not identify individuals to species.