The Experts below are selected from a list of 582 Experts worldwide ranked by ideXlab platform
A. Alonso - One of the best experts on this subject based on the ideXlab platform.
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What explains the invading success of the aquatic mud snail Potamopyrgus antipodarum (Hydrobiidae, Mollusca)?
Hydrobiologia, 2008Co-Authors: A. Alonso, Pilar Castro-díezAbstract:The spread of non-native species is one of the most harmful and least reversible disturbances in ecosystems. Species have to overcome several filters to become a pest (transport, establishment, spread and impact). Few studies have checked the traits that confer ability to overcome these steps in the same species. The aim of the present study is to review the available information on the life-history and ecological traits of the mud snail, Potamopyrgus antipodarum Gray (Hydrobiidae, Mollusca), native from New Zealand, in order to explain its invasive success at different aquatic ecosystems around the world. A wide tolerance range to physico-chemical factors has been found to be a key trait for successful transport. A high competitive ability at early stages of succession can explains its establishment success in human-altered ecosystems. A high reproduction rate, high capacity for active and passive dispersal, and the escape from native predators and parasites explains its spread success. The high reproduction and the ability to monopolize invertebrate secondary production explain its high impact in the invaded ecosystems. However, further research is needed to understand how other factors, such as population density or the degree of human perturbation can modify the invasive success of this aquatic snail.
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what explains the invading success of the aquatic mud snail potamopyrgus antipodarum Hydrobiidae mollusca
Hydrobiologia, 2008Co-Authors: A. Alonso, Pilar CastrodiezAbstract:The spread of non-native species is one of the most harmful and least reversible disturbances in ecosystems. Species have to overcome several filters to become a pest (transport, establishment, spread and impact). Few studies have checked the traits that confer ability to overcome these steps in the same species. The aim of the present study is to review the available information on the life-history and ecological traits of the mud snail, Potamopyrgus antipodarum Gray (Hydrobiidae, Mollusca), native from New Zealand, in order to explain its invasive success at different aquatic ecosystems around the world. A wide tolerance range to physico-chemical factors has been found to be a key trait for successful transport. A high competitive ability at early stages of succession can explains its establishment success in human-altered ecosystems. A high reproduction rate, high capacity for active and passive dispersal, and the escape from native predators and parasites explains its spread success. The high reproduction and the ability to monopolize invertebrate secondary production explain its high impact in the invaded ecosystems. However, further research is needed to understand how other factors, such as population density or the degree of human perturbation can modify the invasive success of this aquatic snail.
Karen Helen Wiltshire - One of the best experts on this subject based on the ideXlab platform.
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selectivity and competitive interactions between two benthic invertebrate grazers asellus aquaticus and potamopyrgus antipodarum an experimental study using 13c and 15n labelled diatoms
Freshwater Biology, 2005Co-Authors: Nicole Aberle, Helmut Hillebrand, Jonathan Grey, Karen Helen WiltshireAbstract:1. Tracer experiments with two diatoms labelled with 13C (Nitzschia palea) and 15N (Fragilaria crotonensis), were conducted to investigate feeding selectivity and interspecific competition between the grazers Asellus aquaticus (Isopoda, Crustacea) and Potamopyrgus antipodarum (Hydrobiidae, Gastropoda). Conventional methods, such as cell counts and estimated biovolume, were used first to detect feeding preferences within the different grazer treatments. 2. The results revealed a significant decline in algal biovolume in all grazer treatments and no indications of active selectivity were observed. In contrast to conventional methods, measurements based on isotope signatures showed strong differences in tracer uptake, thus indicating different degrees of assimilation and digestion by the two grazers. 3. The selectivity index Q, which provides information on the uptake ratio of 13C to 15N, showed a significant time effect for both grazer species and a significant difference between single- and mixed-grazer treatments for P. antipodarum. Thus, this technique enabled the direct quantification of the uptake by grazers and, therefore, served as an ideal tool for the detection of passive selectivity. 4. Our results indicate a shift in feeding preferences related to between-species competition and a potential divergence of trophic niches when species coexist.
Peter Glöer - One of the best experts on this subject based on the ideXlab platform.
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new freshwater molluscs from crete greece gastropoda Hydrobiidae bythinellidae valvatidae
Ecologica Montenegrina, 2019Co-Authors: Peter Glöer, Hansjurgen HirschfelderAbstract:The syntype of Pseudamnicola brachia (Westerlund, 1886), the only known Pseudamnicola sp. from Crete, is compared with a recently collected Pseudamnicola sp. which could be identified as a species new to science. Comparisons with data in the literature show us that P. brachia (Westerlund, 1886) has nothing in common with P. brachia sensu Schutt, 1980 as well as P. brachia sensu Szarowska et al ., 2015, but both are possibly conspecific with the new species which is described here. In addition we describe two new Bythinella spp. from Crete which could be found in addition to B. cretensis Schutt, 1980, and a new Valvata ( Tropidina ) sp. from Lake Kournas.
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Unraveling a new lineage of Hydrobiidae genera (Caenogastropoda: Truncatelloidea) from the Ponto-Caspian region
2016Co-Authors: Diana Delicado, Ladimir Pešić, Peter GlöerAbstract:Diana Delicado, ladimir Pešić, Peter Glöer (2016): Unraveling a new lineage of Hydrobiidae genera (Caenogastropoda: Truncatelloidea) from the Ponto-Caspian region. European Journal of Taxonomy 208: 1-29, DOI: 10.5852/ejt.2016.20
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unraveling a new lineage of Hydrobiidae genera caenogastropoda truncatelloidea from the ponto caspian region
European journal of taxonomy, 2016Co-Authors: Diana Delicado, Vladimir Pesic, Peter GlöerAbstract:Phylogenetic analyses of the highly diverse (non-marine aquatic) gastropod family Hydrobiidae Stimpson, 1865 have revealed seven main lineages, most of which represent subfamilies. The subfamily Pseudamnicolinae Radoman, 1977, and specifically the genus Pseudamnicola Paulucci, 1878 (mainly inhabiting western and central Mediterranean regions), contributes substantially to this hydrobiid richness. Most of its congeners have been described in terms of their shell and penis features, which are of limited diagnostic value. Hence, the taxonomic status of some Pseudamnicola species needs to be revised, particularly of those inhabiting marginal regions, such as the Ponto-Caspian domain, largely occupied by the subfamily Pyrgulinae Brusina, 1882. Here we present a molecular phylogeny including species of both subfamilies along with extended morphological descriptions to confirm assignments of the Iranian species Pseudamnicola zagrosensis Gloer & Pesic, 2009; Sarkia kermanshahensis Gloer & Pesic, 2009 (originally within Pseudamnicola ) and P. saboori Gloer & Pesic, 2009. Our COI-based tree rejects these assignments suggesting a new potential lineage, sister to the pyrgulinid species, and comprising three genera: Shadinia Akramowski, 1976, Intermaria gen. nov. and Persipyrgula gen. nov. These genera differ molecularly by 3.6%–8.5%, and are diagnosable by penis, female genitalia and radula features. Our findings evidence the high morphological variability of pyrgulinid species and provide insight into the origins and evolution of the freshwater Ponto-Caspian fauna.
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new taxa of freshwater molluscs from armenia caenogastropoda truncatelloidea Hydrobiidae
Folia Malacologica, 2015Co-Authors: Peter Glöer, Ulrich Bosneck, Frank Walther, Marco T NeiberAbstract:Only two hydrobiid species were known from Armenia, Shadinia terpoghassiani (Akramowski, 1952) and Shadinia akramowskii (Zhadin, 1952). Recent investigations in Armenia revealed two new species: Shadinia bjniensis n. sp. and Nicolaia schniebsae n. gen. n. sp. Both are described here and compared with all known hydrobiids from Armenia and adjacent countries. key Words: Gastropoda, new species, new genus, identification key
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new subterranean freshwater molluscs from bosnia hercegovina mollusca Hydrobiidae
Ecologica Montenegrina, 2015Co-Authors: Peter Glöer, Jozef GregoAbstract:Recently collected materials from Bosnia & Hercegovina revealed 5 new species of the genus Bythiospeum: B. blihensis n. sp., B. hrustovoensis n. sp., B. maroskoi n. sp., B. plivensis n. sp., and B. petroedei n. sp. In addition a new Islamia could be found, described here as I. steffeki n. sp. Photos of holotypes and paratypes are presented in addition to descriptions.
Pilar Castrodiez - One of the best experts on this subject based on the ideXlab platform.
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what explains the invading success of the aquatic mud snail potamopyrgus antipodarum Hydrobiidae mollusca
Hydrobiologia, 2008Co-Authors: A. Alonso, Pilar CastrodiezAbstract:The spread of non-native species is one of the most harmful and least reversible disturbances in ecosystems. Species have to overcome several filters to become a pest (transport, establishment, spread and impact). Few studies have checked the traits that confer ability to overcome these steps in the same species. The aim of the present study is to review the available information on the life-history and ecological traits of the mud snail, Potamopyrgus antipodarum Gray (Hydrobiidae, Mollusca), native from New Zealand, in order to explain its invasive success at different aquatic ecosystems around the world. A wide tolerance range to physico-chemical factors has been found to be a key trait for successful transport. A high competitive ability at early stages of succession can explains its establishment success in human-altered ecosystems. A high reproduction rate, high capacity for active and passive dispersal, and the escape from native predators and parasites explains its spread success. The high reproduction and the ability to monopolize invertebrate secondary production explain its high impact in the invaded ecosystems. However, further research is needed to understand how other factors, such as population density or the degree of human perturbation can modify the invasive success of this aquatic snail.
Pilar Castro-díez - One of the best experts on this subject based on the ideXlab platform.
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What explains the invading success of the aquatic mud snail Potamopyrgus antipodarum (Hydrobiidae, Mollusca)?
Hydrobiologia, 2008Co-Authors: A. Alonso, Pilar Castro-díezAbstract:The spread of non-native species is one of the most harmful and least reversible disturbances in ecosystems. Species have to overcome several filters to become a pest (transport, establishment, spread and impact). Few studies have checked the traits that confer ability to overcome these steps in the same species. The aim of the present study is to review the available information on the life-history and ecological traits of the mud snail, Potamopyrgus antipodarum Gray (Hydrobiidae, Mollusca), native from New Zealand, in order to explain its invasive success at different aquatic ecosystems around the world. A wide tolerance range to physico-chemical factors has been found to be a key trait for successful transport. A high competitive ability at early stages of succession can explains its establishment success in human-altered ecosystems. A high reproduction rate, high capacity for active and passive dispersal, and the escape from native predators and parasites explains its spread success. The high reproduction and the ability to monopolize invertebrate secondary production explain its high impact in the invaded ecosystems. However, further research is needed to understand how other factors, such as population density or the degree of human perturbation can modify the invasive success of this aquatic snail.