New records of Cepaea nemoralis (Gastropoda, Pulmonata, Helicidae) and phenotypic composition of its colonies in Western Ukraine

2020 ◽  
Vol 30 (2) ◽  
pp. 75-86 ◽  
Author(s):  
N. V. Gural-Sverlova ◽  
R. I. Gural ◽  
S. P. Savchuk

The phenotypic composition of the introduced colonies of Cepaea nemoralis in five settlements of Ivano-Frankivsk and Lviv regions of Ukraine, studied from May to July 2019, is described. The largest colonies were found in Bohorodchany (Ivano-Frankivsk region) and Lviv. In most cases, there was a pronounced dominance (from 40% or more) of the individuals with unbanded and five-banded shells - pink, less often yellow. Among the snails with five-banded shells, phenotypes with the fusion of two or more bands prevailed, among which in Lviv the phenotype (12)3(45) most often occurred, and in Bohorodchany (123)(45). Molluscs with brown shells were found in only one of the studied colonies. In Bohorodchany a differentiation of the phenotypic structure of the C. nemoralis colonies separated by a highway, was noticed. The available data on the present distribution in Western Ukraine of two introduced species of the genus Cepaea: C. nemoralis and C. hortensis are analyzed.

Zoodiversity ◽  
2021 ◽  
Vol 55 (1) ◽  
pp. 51-62
Author(s):  
N. V. Gural-Sverlova ◽  
R. I. Gural

Th e shell coloration was studied in more than three thousand adults of the grove snail, Cepaea nemoralis (Linnaeus, 1758), from 15 colonies discovered in 2019–2020 in Lviv City and in the immediate vicinity of its south-ern administrative border (Zubra village). In most colonies, relatively light phenotypes prevailed: most oft en P00000, less oft en Y00000 or Y00300. In total, more than a third of the collected specimens had the phenotype P00000. Great variability of the phenotypic and genetic structure of this introduced species in the study area was demonstrated, which usually does not have a clear connection with the locations of colonies or with the shading of habitats. Th is may be due to both random factors (founder eff ect, gene drift in recently formed colonies), and the relative youth of the colonies. In the future, the obtained data can be used to monitor possible long-term changes in the phenotypic composition of the investigated colonies to assess the potential eff ect of selective factors on this composition, fi rst of all, climatic selection outside the natural range of C. nemoralis.


2011 ◽  
Vol 9 (3) ◽  
pp. 571-578 ◽  
Author(s):  
Oscar Lasso-Alcalá ◽  
Jorge L. S. Nunes ◽  
Carlos Lasso ◽  
Juan Posada ◽  
Ross Robertson ◽  
...  

We examined 308 specimens of the Indo-Pacific blenniid Omobranchus punctatus deposited in four museum collections, and analyzed data on their collection locations to assess its invasion on the Atlantic coast of Central and South America. This species occurs in shoreline estuarine and marine habitats in the Indo-West Pacific. Previous sampling and recent records in the Tropical West Atlantic from 1930 to 2004 produced 20 records for: Panamá, Colombia, Venezuela, Trinidad and Brazil. In this work, we provide data on 17 new records for the Gulfs of Venezuela and Paria in Venezuela, as well as four records for Maranhão and Pará states in NE Brazil. The temporal pattern of collections (1930 - 2009) and the proximity of most localities to ports and zones of ship traffic indicate that O. punctatus was initially introduced to the Atlantic by ships travelling from India to Trinidad. Within Brazil the introduction is linked to shipping connected to petroleum platforms. In Maranhão and Pará the introduction may have occurred as a result of fish sheltering in fouling on hulls of ships moving between ports around the mouth of the Amazon River. Alternatively, the spread of this species along of the American coast may reflect the expansion of the range of O. puntactus through larval dispersal in northward flowing currents. We recommend monitoring of this introduced species, and studies of its ecology in West Atlantic areas.


Zootaxa ◽  
2004 ◽  
Vol 630 (1) ◽  
pp. 1 ◽  
Author(s):  
CARLOS D. PÉREZ ◽  
MAURICIO O. ZAMPONI

The present study deals with six new records of octocoral species (two alcyoniid soft corals and four primnoid gorgonians) for the south western Atlantic Ocean. These new records, mainly for the gorgonians, improves the knowledge of their present distribution. The species Thouarella koellikeri and Dasystenella acanthina have their known distribution widened, showing in the first case a continuous bioceanic distribution (south east Pacific south west Atlantic). The species of the genus Primnoella, P. biserialis and P. compressa, widen their distributional range tending to a geographical continuity along the south eastern coasts of the American continent, avoiding the zoogeographic barrier constituted by the R o de la Plata.


Zootaxa ◽  
2012 ◽  
Vol 3458 (1) ◽  
pp. 133 ◽  
Author(s):  
SAMUEL W. JAMES ◽  
GILDAS BRICE DIVINA

This is the first account of earthworms from the Gamba Complex of Protected Areas, a highly biodiverse coastal area ofequatorial Africa. We describe five new species of Dichogaster Beddard, 1888: Dichogaster (Diplothecodrilus)moussavoui sp. nov., D. (Diplothecodrilus) tchignoumbai sp. nov., D. (Diplothecodrilus) tobii sp. nov., D.(Diplothecodrilus) alonsoi sp. nov., and D. (Dichogaster) gambaensis sp. nov.; report several more taxa for which thematerial was not adequate to serve as the basis for new species descriptions, and present new records of several exoticspecies. Coastal Gamba is now known to have ten indigenous species and four introduced species, some of which areknown invasives. Characteristics shared by several Gamba Dichogaster conflict with characters used to define subgenera of Dichogaster, indicating that additional data are needed to resolve relationships within this large taxon.


Zootaxa ◽  
2008 ◽  
Vol 1739 (1) ◽  
pp. 1 ◽  
Author(s):  
MIQUEL VILA-FARRÉ ◽  
EDUARDO MATEOS ◽  
RONALD SLUYS ◽  
RAFAEL ROMERO

Little is known about the taxonomy and distribution of terrestrial planarians on the Iberian Peninsula. Few studies have tried to investigate the local diversity of these animals, due to both their lack of economic interest and their low abundance. In this study we have made extensive searches and collections of terrestrial planarians from the Iberian Peninsula, thus gathering new information on their taxonomy and biogeography. The study includes the description of three new species of the genus Microplana, viz. Microplana aixandrei sp. nov., Microplana grazalemica sp. nov., and Microplana gadesensis sp. nov. We present distribution maps summarizing published and new records of land planarians. The present work substantially increases our knowledge on this group of animals in Spain and Portugal and at the same time also evidences the scarcity of data and studies on the biology of these organisms.


2006 ◽  
Vol 138 (5) ◽  
pp. 602-609 ◽  
Author(s):  
Christopher G. Majka ◽  
Joyce Cook ◽  
Susan Westby

AbstractSeven species of introduced Carabidae are newly reported in Nova Scotia and Prince Edward Island. Trechus quadristriatus (Schrank), Amara ovata (Fabricius), and Harpalus rubripes (Duftschmid) are newly recorded in Atlantic Canada as a whole. Possible modes of introduction of these species to the region are discussed. Several may have been introduced in association with dry ballast shipments. Some may have arrived via natural dispersion from neighbouring areas; others appear to have been present and undetected for a considerable time. The possible impact of such introductions is also discussed. Synanthropic environments have higher proportions of introduced species than relatively undisturbed, native habitats. Some adventive species do become widespread in native environments; however, negative impacts on native species may not be readily apparent.


Check List ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 054 ◽  
Author(s):  
Aydin Örstan

The European land snail Cepaea nemoralis (Linnaeus, 1758) was introduced in North America in 1857 in Burlington, New Jersey, U.S.A. There is only one anedoctal record of C. nemoralis from Montreal, Canada, but without a date or an exact location. In this note, recent records of C. nemoralis are presented for Montreal, based on surveys from 7 to 9 August 2009 along a southwest to northeast transect parallel to the Montreal-Dorion-Rigaud commuter railroad.


1983 ◽  
Vol 115 (6) ◽  
pp. 673-677 ◽  
Author(s):  
J. F. Flannagan ◽  
D. G. Cobb

AbstractRecent collections (1980–1982) of winter stoneflies in southern Manitoba have resulted in the addition of five previously unrecorded species: Capnia coloradensis Claassen, C. confusa Claassen, Paracapnia angulata Hanson, Skwala parallela (Frison), and Utacapnia trava (Nebeker and Gaufin) to the nine previously recorded species. Eight of the 14 species now known from Manitoba occur in the small spring-fed streams on the east escarpment of the Duck Mountain Provincial Park. The probable zoogeographical origins and present distribution of winter stoneflies in Manitoba are explained in light of various post-glacial drainage patterns. Adults of U. trava were observed, often copulating, on the underside of the ice. They were also observed crawling away from streams with no ice cover to a distance of 50 m.


Arachnology ◽  
2012 ◽  
Vol 15 (8) ◽  
pp. 269-272 ◽  
Author(s):  
Alessandro Kulczycki ◽  
Enrico Simeon ◽  
Carlo Maria Legittimo ◽  
Piergiorgio Di Pompeo

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