Results 21 to 30 of about 12,423 (218)

Pleistocene malacofauna of the Požarevac Danube area (NE Serbia) [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2007
The results of recent analyses of loess samples from the localities: Ćirikovac, Klenovnik, Novi Kostolac, Zatonje and Kisiljevo, confirm the idea that malacological associations identify biotope characteristics.
Mitrović Biljana
doaj   +1 more source

On Paleozoic platycerate gastropods

open access: yesZitteliana, 2023
The platycerate gastropods Orthonychia yutaroi Ebbestad, sp. nov. (Ordovician, Boda Limestone, Sweden), O. enorme (Silurian, Sweden, Gotland), O. parva (Pennsylvanian, Finis Shale Member, USA), and Orthonychia sp. (Mississippian, Imo Formation, USA) are studied including their protoconch morphology.
Alexander Nützel   +5 more
openaire   +3 more sources

A Phylogenomic Backbone for Gastropod Molluscs

open access: yesSystematic Biology, 2022
AbstractGastropods have survived several mass extinctions during their evolutionary history resulting in extraordinary diversity in morphology, ecology, and developmental modes, which complicate the reconstruction of a robust phylogeny. Currently, gastropods are divided into six subclasses: Caenogastropoda, Heterobranchia, Neomphaliones, Neritimorpha ...
Juan E Uribe   +6 more
openaire   +4 more sources

Genomic signatures of host‐associated divergence and adaptation in a coral‐eating snail, Coralliophila violacea (Kiener, 1836)

open access: yesEcology and Evolution, 2020
The fluid nature of the ocean, combined with planktonic dispersal of marine larvae, lowers physical barriers to gene flow. However, divergence can still occur despite gene flow if strong selection acts on populations occupying different ecological niches.
Sara E. Simmonds   +4 more
doaj   +1 more source

Sialic acids in gastropods [PDF]

open access: yesFEBS Letters, 2001
The occurrence of N‐acetylneuraminic acid and N‐glycolylneuraminic acid residues in preparations of the slug Arion lusitanicus (Gastropoda) was determined by sodium dodecyl sulphate electrophoresis of the proteins followed by lectin blots stained with the sialic acid specific lectin from Maackia amurensis, by the sensitivity of this binding to ...
Bürgmayr, Sabine   +2 more
openaire   +2 more sources

Microbiome Analysis of Malacopathogenic Nematodes Suggests No Evidence of a Single Bacterial Symbiont Responsible for Gastropod Mortality

open access: yesFrontiers in Immunology, 2022
Nematodes and bacteria are prevalent in soil ecosystems, and some have evolved symbiotic relationships. In some cases, symbionts carry out highly specialized functions: a prime example being entomopathogenic nematodes (EPNs), which vector bacteria ...
Laura Sheehy   +3 more
doaj   +1 more source

Fauna of gastropod molluscs in the Curonian Lagoon littoral biotopes (Baltic Sea, Kaliningrad region, Russia) [PDF]

open access: yesMalacologica Bohemoslovaca, 2011
A survey of the gastropod mollusc fauna in the coastal waters of the southern part of the Curonian Lagoon (Kaliningrad region, Russia) were carried out. Study revealed 34 aquatic gastropods representing 30% of Prosobranchia and 70% of Pulmonata. Obtained
Dmitry Filippenko
doaj   +1 more source

Technoecosystem of the cooling pond of the South Ukrainian Nuclear Power Plant: group dynamics and transformation

open access: yesТрансформация экосистем, 2020
The results of long-term complex hydrobiological studies of the cooling pond of the South Ukrainian Nuclear Power Plant (SU NPP) are presented. The abundance of zoo- and phytoplankton increased until 1984–1985, and then in the summer of 1986, against a ...
Tatyana N. Novoselova   +4 more
doaj   +1 more source

THE EVOLUTION OF APOSEMATISM IN MARINE GASTROPODS [PDF]

open access: yesEvolution, 1991
In a recent review of the literature on marine gastropods, Rosenberg (1989) concludes that in this group,".. . as in the lepidopterans, . . . individual selection is the predominant mode of evolution of warning coloration." Rosenberg's analysis raises interesting issues concerning the evolution of aposematism generally, and in marine gastropods in ...
Guilford, T, Cuthill, I
openaire   +3 more sources

Seasonal dynamics of population and age composition of the trematode Gynaecotyla adunca larvae (Linton, 1905) Yamaguti, 1939 in the Black Sea

open access: yesРоссийский паразитологический журнал, 2021
The purpose of the research is analyzing the seasonal dynamics for the number and the hemipopulation structure of the trematode Gynaecotyla adunca larvae in shrimps of the genus Palaemon Weber, 1795 and determining the dependence of their infection with ...
Yu. V. Belousova, V. L. Lozovsky
doaj   +1 more source

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