Results 11 to 20 of about 113 (102)

The development of isolated blastomeres in Bithynia tentaculata (prosobranchia, gastropoda) [PDF]

open access: yesJournal of Experimental Zoology, 1973
AbstractThe development of isolated blastomeres, separated at the first and second cleavage has been studied. After separation at the first cleavage, one half‐embryo (CD) becomes swollen and balloon‐like and develops adult organs such as eyes, tentacles, shell, operculum, etc.
Verdonk, Nicolaas Hendrikus   +1 more
openaire   +3 more sources

Thirty years of slug control using the parasitic nematode Phasmarhabditis hermaphrodita and beyond

open access: yesPest Management Science, Volume 79, Issue 10, Page 3408-3424, October 2023., 2023
The nematode Phasmarhabditis hermaphrodita is a parasite of slugs and snails and has been formulated into a biological control agent for use across northern Europe since 1994. Here, we review all research on P. hermaphrodita that has been carried out over the last 30 years and suggest future priorities.
Robbie Rae   +2 more
wiley   +1 more source

Functional non‐equivalence in ecosystem engineers? Different freshwater mussels (Bivalvia: Unionidae) are associated with different macroinvertebrate communities in a subtropical lake

open access: yesFreshwater Biology, Volume 68, Issue 10, Page 1765-1775, October 2023., 2023
Abstract Freshwater mussels (Bivalvia: Unionidae) are often described as ecosystem engineers, with the capacity to alter abiotic habitats; this can facilitate certain macroinvertebrate taxa, increasing biodiversity and potentially altering community composition.
Isobel Ollard   +2 more
wiley   +1 more source

Pleistocene environments, climate, and human activity in Britain during Marine Isotope Stage 7: insights from Oak Tree Fields, Cerney Wick, Gloucestershire

open access: yesJournal of Quaternary Science, Volume 38, Issue 6, Page 840-865, August 2023., 2023
ABSTRACT Investigations at Oak Tree Fields, Cerney Wick, Gloucestershire, in western England have revealed a sequence of fluvial deposits dating from Marine Oxygen Isotope Stage (MIS) 7 to 5. At the base of the sequence, a series of gravel and sand facies were deposited, initially as part of a meandering river.
Joshua T. Hogue   +13 more
wiley   +1 more source

BioLake: A first assessment of lake temperature‐derived bioclimatic predictors for aquatic invasive species

open access: yesEcosphere, Volume 14, Issue 7, July 2023., 2023
Abstract Aquatic invasive species (AIS) present major ecological and economic challenges globally, endangering ecosystems and human livelihoods. Managers and policy makers thus need tools to predict invasion risk and prioritize species and areas of concern, and they often use native range climate matching to determine whether a species could persist in
Ryan C. Burner   +4 more
wiley   +1 more source

Doplněk k poznání vodních měkkýšů Labe mezi Hřenskem a Střekovem a srovnání s malakofaunou Labe v jiných úsecích [PDF]

open access: yesMalacologica Bohemoslovaca, 2009
This paper completes knowledge on aquatic molluscs of the free flowing part of the Elbe River between Hřensko and the weir with lock in Ústí nad Labem – Střekov.
Luboš Beran
doaj   +1 more source

DNA Barcoding and Distribution of Gastropods and Malacostracans in the Lower Danube Region

open access: yesDiversity, 2022
This survey reports the spatial distribution of gastropods belonging to Caenogastropoda, Architaenioglossa, Littorinimorpha, Cycloneritida and Hygrophila orders, and malacostracans from Amphipoda and Mysida orders in the lower sector of the Danube River,
Selma Menabit   +5 more
doaj   +1 more source

High‐resolution environmental changes recorded in ostracod and mollusc fauna from the Holsteinian palaeolake at Ortel Królewski II, eastern Poland

open access: yesBoreas, Volume 51, Issue 4, Page 793-809, October 2022., 2022
To better understand the environmental variability during the Holsteinian interglacial, fauna of the palaeolake deposits at Ortel Królewski II, eastern Poland was investigated. The analysis covered the uppermost part of the profile, representing the so‐called pre‐optimal part of the Holsteinian interglacial (MIS 11c), namely the Taxus and Pinus‐Larix ...
Monika Czajkowska
wiley   +1 more source

High parasite diversity in a neglected host: larval trematodes ofBithynia tentaculatain Central Europe [PDF]

open access: yesJournal of Helminthology, 2020
AbstractBithynids snails are a widespread group of molluscs in European freshwater systems. However, not much information is available on trematode communities from molluscs of this family. Here, we investigate the trematode diversity ofBithynia tentaculata, based on molecular and morphological data.
Schwelm, Jessica   +4 more
openaire   +4 more sources

Alien species and the Water Framework Directive: Recommendations for assessing ecological status in fresh waters in Norway

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 32, Issue 7, Page 1195-1208, July 2022., 2022
Abstract Invasive alien species are recognized as a significant anthropogenic threat to freshwater ecosystems, because they may bring about the local extinction of native species and the collapse of habitat types of special conservation concern. The Water Framework Directive (WFD) is an important legislative tool for the protection of water bodies in ...
Hanno Sandvik   +7 more
wiley   +1 more source

Home - About - Disclaimer - Privacy