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31 results for “zebra mussel”
Lake Mendota, Wisconsin, USA, Zebra Mussel Veliger Water Column Density 2016-2019
We sampled veliger (larval stage) zebra mussels (Dreissena polymorpha) from 2016-2019. Zebra mussels are invasive in Lake Mendota and were first detected in November 2015. Samples were taken at three different sites on Lake Mendota from June to August in 2016, and from June to November in 2018-2019, using a 0.5 m diameter, 64 micrometer mesh size plankton net for an 8 m depth tow. This dataset complements adult zebra mussel, zoobenthos, and phytobenthos data collected during the same time period, for which data is also archived with EDI.
Lake Mendota, Wisconsin, USA, Zebra Mussel Density and Biomass 2016-2018
We sampled adult zebra mussels (Dreissena polymorpha) in the benthos of Lake Mendota from 2016-2018 to track the growth of the population following its initial detection in fall 2015. We sampled along three transects inherited from Karatayev et al. (2013) at five different depths (1, 3, 5, 8, and 10 m) twice a summer (June and August) from 2016-2018. Because suitable zebra mussel substrate was limited at these sites, we also selected five 1 m depth, rocky sites (optimal zebra mussel sites) to track density and biomass where colonization was most intense. A pared-down version of this routine sampling continued from 2019 onward but is not included here. This dataset complements zoobenthos and phytobenthos data collected according to the same routine sampling structure, as well as larval zebra mussel (veliger) sampling for which data is also archived with EDI. Biomass data are modeled from lengths of up to 100 individuals that were measured in each sample. Those lengths were fed into Lake Mendota-specific length-to-weight power law equations parameterized by body size measurements (length, width, live weight, wet weight, dry weight, shell weight, shell-free weight, and ash-free dry weight) of 99 mussels collected at different sites across Lake Mendota in 2018.
Lake Mendota, Wisconsin, USA, Zebra Mussel Body Size and Biomass Biometrics 2018
We sampled 98 individuals of the zebra mussel (Dreissena polymorpha) population of Lake Mendota from many littoral zone sites in 2018 to create biometric relationships between several metrics of body size and several metrics of biomass, including length, width, height, living weight, wet weight, dry weight, shell weight, shell-free dry weight, and ash-free dry weight. We selected individuals to span a wide range of body sizes and found strong relationships between most combinations of body size and biomass metrics.
Figure 5 in A simplistic water body-specific risk assessment model for zebra mussel (Dreissena polymorpha) establishment based on physicochemical characteristics
Figure 5. Overall zebra mussel establishment risk categorization of 133 Texas water bodies based on calcium, pH, salinity, and temperature. Major water bodies not included in this study due to lack of TCEQ water quality data are shown for context of the study extent. The Whittier et. al. low calcium/low risk zone delineation is shown to demonstrate level of agreement with that study, which is relatively high with some noteworthy exceptions. The Cypress, Sabine, and Neches River basins referenced in the text are the three East Texas basins with predominantly minimal risk water body categorizations.
Figure 2 in A simplistic water body-specific risk assessment model for zebra mussel (Dreissena polymorpha) establishment based on physicochemical characteristics
Figure 2. pH-based zebra mussel establishment risk categorization of 133 Texas water bodies. Major water bodies not included in this study due to lack of TCEQ water quality data are shown for context of the study extent.
Figure 4 in A simplistic water body-specific risk assessment model for zebra mussel (Dreissena polymorpha) establishment based on physicochemical characteristics
Figure 4. Temperature-based zebra mussel establishment risk categorization of 126 Texas water bodies. Major water bodies not included in this study due to lack of TCEQ water quality data are shown for context of the study extent.
Figure 3 in A simplistic water body-specific risk assessment model for zebra mussel (Dreissena polymorpha) establishment based on physicochemical characteristics
Figure 3. Salinity-based zebra mussel establishment risk categorization of 133 Texas water bodies. Major water bodies not included in this study due to lack of TCEQ water quality data are shown for context of the study extent.
Figure 1 in A simplistic water body-specific risk assessment model for zebra mussel (Dreissena polymorpha) establishment based on physicochemical characteristics
Figure 1. Calcium-based zebra mussel establishment risk categorization of 85 Texas water bodies. Areas to the east of the Whittier et al. (2008) calcium risk delineation were predicted by that study to have ≤ 12 mg/l calcium (i.e., minimal establishment risk); this delineation is shown to demonstrate level of agreement with that study. Major water bodies not included in this study due to lack of TCEQ water quality data are shown for context of the study extent. The Cypress, Sabine, and Neches River basins referenced in the text are the three East Texas basins with predominantly minimal risk water body categorizations.
Figure 2 in Environmental DNA as a tool to help inform zebra mussel, Dreissena polymorpha, management in inland lakes
Figure 2. The mean number of cycles needed to detect DNA of zebra mussels from water samples collected at the surface, mid-column and bottom of Lake Minnetonka directly above a known zebra mussel population. A lower number of cycles indicates a greater amount of DNA. Bars represent the 95% confidence intervals.
Figure 3 in Environmental DNA as a tool to help inform zebra mussel, Dreissena polymorpha, management in inland lakes
Figure 3. Structural Equation Model for zebra mussels in two lakes near Alexandria, Minnesota: Lake Le Homme Dieu (A) and Maple Lake (B). Nodes are environmental DNA copy numbers of zebra mussel DNA (eDNA), habitat, depth, lake and ash-free dry weight (AFDW). AFDW is log(AFDW + 0.1). eDNA is log(copy number eDNA + 0.1). Numbers next to a line between two nodes represents the correlation between the two nodes. The r2 values in boxes correspond % variance of dependent variable explained by the independent variable. Values with an asterisk (*) indicate significant correlation between nodes. Our significance level was established at α ≤ 0.05.
Fig. 1 in Towards a ground pattern reconstruction of bivalve nervous systems: neurogenesis in the zebra mussel Dreissena polymorpha
Fig. 1 Development of Dreissena polymorpha from gastrula to early veliger stage. a, g, h, and i Scanning electron micrographs. b, c Confocal microscope Zprojection images. d, e, and f Single optical sections of c. Acetylated α-tubulin-lir (green), HCS CellMask (pink), and cell nuclei counter staining (blue). Apical is always up. Lateral views. Scale bars are 15 μm. a Ciliated gastrula stage (16 h post fertilization, hpf) with blastopore (bp) on the vegetal pole. b Elongated early trochophore (22 hpf) with prominent apical tuft (at) and prototroch (pt). c Early-trochophore (23 hpf) with apical tuft (at), prototroch (pt), and telotroch (tt). d Early trochophore (23 hpf). e, f Early trochophore (23 hpf) in different optical planes with foregut (fg) and shell field (sf) invagination. g Early veliger (39 hpf) with embryonic shell (s) and expanded velum (ve). h 46 hpf old veliger. i Late veliger larva (188 hpf)
Fig. 1 in A report of Zebra Mussel Dreissena polymorpha (Pallas, 1771) (Bivalvia: Dreissenidae) in the middle sector of Iskar River, Bulgaria
Fig. 1. Study sector of the Iskar River: white circles marked macrozoobenthos sampling sites, dark circles marked microreservoirs of SHPPs.
Fig. 2 in A report of Zebra Mussel Dreissena polymorpha (Pallas, 1771) (Bivalvia: Dreissenidae) in the middle sector of Iskar River, Bulgaria
Fig. 2. Zebra Mussels from Iskar River near Tserovo village. Left: first recorded individual, 2016 September 29. Right: location (yellow arrow) of single specimens in the border (red lines) between ripal zone (0-0.5m depth) and medial river zone (over 1.5m depth). Photos: Ivaylo Yotinov.
Fig. 7 in Towards a ground pattern reconstruction of bivalve nervous systems: neurogenesis in the zebra mussel Dreissena polymorpha
Fig. 7 Suggested ground patterns based on available data for numbers of serotonin-lir apical flask-shaped cells within bivalve apical organs. For further assessment, data on crucial clades, in particular Palaeoheterodonta and Protobranchia, are vital. Phylogeny of major bivalve lineages based on González et al. (2015). Red flask-shaped cells represent the cell count of respective serotonin-lir cells in the apical organ of studied species. Blue cells represent the hypothetical ground pattern. Within Heterodonta, Spisula solidissima shows three flask-shaped cells, while Dreissena
Fig. 6 in Towards a ground pattern reconstruction of bivalve nervous systems: neurogenesis in the zebra mussel Dreissena polymorpha
Fig. 6 Components of the serotonin-lir nervous system in the late veliger larva of Dreissena polymorpha. Serotonin-lir (bright yellow to dark red), acetylated α-tubulin-lir (green), and cell nuclei counter staining (blue). All images are in lateral view and apical is always up. Scale bars are 15 μm. a One flask-shaped serotonin-lir cell (red asterisk) remains of the apical organ and a neurite (n) projects dorsally into the velum (ve). The anlage of the future cerebral ganglion consists of six round, nonflask-shaped cells (turquoise x). (an) anus, (mo) mouth opening, (st) stomach. b Detail of a. Paired cerebro-visceral connectives (cvc) project
Fig. 2 in Towards a ground pattern reconstruction of bivalve nervous systems: neurogenesis in the zebra mussel Dreissena polymorpha
Fig. 2 Development of the serotonin-lir nervous system in Dreissena polymorpha from trochophore to early veliger stage. Serotonin-lir (bright-yellow to dark-red), acetylated α-tubulin-lir (green), and cell nuclei counter staining (blue). All images are in lateral view and apical is always up. Scale bars are 15 μm. a Trochophore larva (23 hpf). First serotonin-lir flask-shaped cell (red asterisk) at the apical pole. (at) apical tuft, (pt) prototroch, (tt) telotroch. b Early veliger larva (39 hpf). Two flask-shaped serotonin-lir cells (red asterisks) in the apical organ underlying the velum (ve). Postero-ventrally, the posterior larval sensory organ (pso) develops. Faintly labeled paired cerebro-visceral connectives (cvc) connect the posterior larval sensory organ (pso) to the
Fig. 5 in Towards a ground pattern reconstruction of bivalve nervous systems: neurogenesis in the zebra mussel Dreissena polymorpha
Fig. 5 Development of the serotonin-lir nervous system in Dreissena polymorpha from mid- to late veliger stage. Serotonin-lir (bright yellow to dark red), acetylated α-tubulin-lir (green), and cell nuclei counter staining (blue). b, c Details of a. f Detail of e. All images are in lateral view and apical is always up. Scale bars are 15 μm. a Mid-veliger larva (114 hpf). One remaining flask-shaped cell of the larval apical organ (red asterisk) underlain by the anlage of the cerebral ganglion which contains five roundish non-flask-shaped cells (turquoise x). Paired cerebrovisceral connectives (cvc) project from the anlage of the cerebral ganglion to the posterior larval sensor organ (pso). (an) anus, (mo) mouth opening, (tt) telotroch b Detail of the remaining flask-shaped cell
Fig. 4 in Towards a ground pattern reconstruction of bivalve nervous systems: neurogenesis in the zebra mussel Dreissena polymorpha
Fig. 4 Components of the serotonin-lir nervous system in the mid-veliger stage of Dreissena polymorpha. Serotonin-lir (bright yellow to dark red), acetylated α-tubulin-lir (green), and cell nuclei counter staining (blue). c, d, e Details of a. All images are in lateral view and apical is always up. Scale bars are 15 μm. a Overview of major neural components including four flask-shaped serotonin-lir cells (red asterisks) that form the apical organ. Neurites (n) project dorsally into the velum (ve). The anlage of the cerebral ganglion (turquoise x) is located underneath the apical organ. Cerebro-visceral connectives (cvc) connect the posterior larval sensory organ (pso) with the apical organ (ao). b Same individual as in a but colorcoded for depth. c Detail of the apical organ (red asterisks) and the anlage
The zebra mussel (Dreissena polymorpha) as a model organism for ecotoxicological studies: a prior 1H NMR spectrum interpretation of a whole body extract for metabolism monitoring.
<p>NMR data of the zebra mussel <em>Dreissena polymorpha</em> whole body polar extract metabolome</p> <p>- 1D <sup>1</sup>H annotated spectrum - 600 MHz</p> <p>- 2D <sup>1</sup>H-<sup>1</sup>H JRES spectrum - 600 MHz</p> <p>- 2D<sup>1</sup>H-<sup>1</sup>H COSY spectrum - 600 MHz</p> <p>- 2D<sup>1</sup>H-<sup>1</sup>H TOCSY spectrum - 600 MHz</p> <p>- 2D<sup>1</sup>H-<sup>13</sup>C HSQC spectrum - 600 MHz</p> <p>- 2D<sup>1</sup>H-<sup>13</sup>C HSQC spectrum - 800 MHz</p> <p>- 2D<sup>1</sup>H-<sup>31</sup>P HSQC spectrum - 800 MHz</p> <p>- <sup>1</sup>H annotated spectrum description tables (.xlsx)</p> <p>- Instructions for data visualization in Topspin</p>
Invasive zebra mussel (Dreissena polymorpha) threatens an exceptionally large population of the depressed river mussel (Pseudanodonta complanata) in a postglacial lake
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