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23 results for “Dreissenidae”
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. 1 in The Study Of Age-Related Variability Of Pigmentation Patterns Of The Shells Of Dreissena Polymorpha (Bivalvia, Dreissenidae) From Different Parts Of It'S Range
Fig. 1. Change of pattern types on zebra mussel shell. The present shell has four age zones (0+, 1+, 2+, 3+). The pattern sequence is С–АС–А–А.
Figure 1 in Molecular data on Phyllodistomum macrocotyle (Digenea: Gorgoderidae) from an intermediate host Dreissena polymorpha (Bivalvia: Dreissenidae) in the Northern Dvina River Basin, Northwest Russia
Figure 1. Map of the study area: A) Geographic position of the research area (red color frame and red color point); B) The Northern Dvina River Basin (red color flags indicate points where zebra mussels infected with Phyllodistomum macrocotyle were found); C) Habitat of zebra mussel, the Yuras River; D) Trematode sporocysts located within the gills of Dreissena polymorpha.
Figure 2 in Molecular data on Phyllodistomum macrocotyle (Digenea: Gorgoderidae) from an intermediate host Dreissena polymorpha (Bivalvia: Dreissenidae) in the Northern Dvina River Basin, Northwest Russia
Figure 2. Maximum likelihood phylogeny of Phyllodistomum macrocotyle based on the nuclear dataset (28S rDNA gene fragment). Numbers near nodes are bootstrap support (BS) values of IQ-TREE. Scale bar indicates the branch lengths. The red color indicates our sequence from Northwest Russia.
Fig. 2 in The Invasive Caribbean Bivalve Mytilopsis Sallei (Dreissenidae) Introduced To Singapore And Johor Bahru, Malaysia
Fig. 2. Percentage frequency histograms of live (filled bars) and dead (white bars) Mytilopsis size classes at ten localities in Singapore and Johor Bahru and arranged in order of increasing salinity. Size was measured as either shell length (living individuals) or right valves only (dead individuals). The largest individual recorded was 29 mm long. See Table 1 for sample sizes.
Fig. 1 in The Invasive Caribbean Bivalve Mytilopsis Sallei (Dreissenidae) Introduced To Singapore And Johor Bahru, Malaysia
Fig. 1. Occurrence of Mytilopsis sallei in Singapore and Johor Bahru. Open and closed dots represent localities where Mytilopsis was either absent or present, respectively. Location numbers correspond to those provided in Table 1, which are arranged in order of increasing salinity. Open and closed triangles denote locations as reported upon earlier (Sachidhanandam & Chou, 1996) and where Mytilopsis was also either absent or present, respectively. Two other localities where Mytilopsis occurs are represented by a closed square (Punggol Park; see Chan, 1997) and an asterisk (Geylang Canal; pers. obs.). Abbreviations: a–West Johor Straits; b–Sungei Buloh; c–Pulau Tekong; d–Kallang Basin; e–Singapore River; f–Pulau Semakau.
Figure 2 in First record of metacercariae trematodes Opisthioglyphe ranae (Digenea: Telorchiidae) and Echinostoma bolschewense (Digenea: Echinostomatidae) in Dreissena polymorpha (Bivalvia: Dreissenidae) from the Don and Volga river basins, Russia
Figure 2. Maximum likelihood phylogeny of Echinostoma genus based on the nuclear dataset (28S rDNA gene fragment). Numbers near nodes are bootstrap support (BS) values of IQ-TREE. Scale bar indicates the branch lengths. Red color indicates our sequence from the Sokolovskoe Reservoir (Don River basin).
Figure 3 in First record of metacercariae trematodes Opisthioglyphe ranae (Digenea: Telorchiidae) and Echinostoma bolschewense (Digenea: Echinostomatidae) in Dreissena polymorpha (Bivalvia: Dreissenidae) from the Don and Volga river basins, Russia
Figure 3. Maximum likelihood phylogeny of Echinostoma genus based on the mitochondrial dataset (COI gene fragment). Numbers near nodes are bootstrap support (BS) values of IQ-TREE. Scale bar indicates the branch lengths. Red color indicates our sequence from the Sokolovskoe Reservoir (Don River basin) and Volga River.
Figure 7 in First record of metacercariae trematodes Opisthioglyphe ranae (Digenea: Telorchiidae) and Echinostoma bolschewense (Digenea: Echinostomatidae) in Dreissena polymorpha (Bivalvia: Dreissenidae) from the Don and Volga river basins, Russia
Figure 7. Encysted metacercariae of Opisthioglyphe ranae detected in Dreissena polymorpha from Seversky Donets River (Don River Basin, Russia) (A) Metacercarial cysts in the visceral mass of zebra mussel. (B) Encysted metacercaria.
Figure 1 in First record of metacercariae trematodes Opisthioglyphe ranae (Digenea: Telorchiidae) and Echinostoma bolschewense (Digenea: Echinostomatidae) in Dreissena polymorpha (Bivalvia: Dreissenidae) from the Don and Volga river basins, Russia
Figure 1. Map of study area. (A) Discovery of the Dreissena polymorpha in Volga and Don rivers basin, Russia: 1. Sokolovskoe reservoir (Don River basin), 2. Volga River, 3. Seversky Donets River (Don River basin); (B) View of the habitat of D. polymorpha (a) Sokolovskoe reservoir (photo by A. Tomilova), (C) Seversky Donets River (photo by A. Lyubas).
Figure 6 in First record of metacercariae trematodes Opisthioglyphe ranae (Digenea: Telorchiidae) and Echinostoma bolschewense (Digenea: Echinostomatidae) in Dreissena polymorpha (Bivalvia: Dreissenidae) from the Don and Volga river basins, Russia
Figure 6. Encysted metacercariae of Echinostoma bolschewense detected in Dreissena polymorpha from Volga and Don River basin, Russia (A) Metacercarial cysts in the gonad of zebra mussel. (B) Encysted metacercaria.
Figure 4 in First record of metacercariae trematodes Opisthioglyphe ranae (Digenea: Telorchiidae) and Echinostoma bolschewense (Digenea: Echinostomatidae) in Dreissena polymorpha (Bivalvia: Dreissenidae) from the Don and Volga river basins, Russia
Figure 4. Maximum likelihood phylogeny of Opisthioglyphe ranae based on the nuclear dataset (28S rDNA gene fragment). Numbers near nodes are bootstrap support (BS) values of IQ-TREE. Scale bar indicates the branch lengths. Red color indicates our sequence from the Seversky Donets River.
Figure 5 in First record of metacercariae trematodes Opisthioglyphe ranae (Digenea: Telorchiidae) and Echinostoma bolschewense (Digenea: Echinostomatidae) in Dreissena polymorpha (Bivalvia: Dreissenidae) from the Don and Volga river basins, Russia
Figure 5. Maximum likelihood phylogeny of Opisthioglyphe ranae based on the mitochondrial dataset (COI gene fragment). Numbers near nodes are bootstrap support (BS) values of IQ-TREE. Scale bar indicates the branch lengths. Red color indicates our sequence from the Seversky Donets River.
Fig. 4 in The Study Of Age-Related Variability Of Pigmentation Patterns Of The Shells Of Dreissena Polymorpha (Bivalvia, Dreissenidae) From Different Parts Of It'S Range
Fig. 4. Frequences of main pattern types at different age zones on zebra mussel shells.
Figure 1 in New ecological insight on two invasive species: Craspedacusta sowerbii (Coelenterata: Limnomedusae) and Dreissenia polymorpha (Bivalvia: Dreissenidae)
Figure 1. Research area: sampling points are presented with numbers: 1, metal barrels; 2, twigs; 3, 8 m depth; 4, 16 m depth.
Figure 2 in New ecological insight on two invasive species: Craspedacusta sowerbii (Coelenterata: Limnomedusae) and Dreissenia polymorpha (Bivalvia: Dreissenidae)
Figure 2. Scheme of polyps of Craspedacusta and brown hydra with placement on the shell of Dreissena polymorpha.
Data from: Microsatellite loci for dreissenid mussels (Mollusca: Bivalvia: Dreissenidae) and relatives: markers for assessing exotic and native populations
We developed and tested 14 new polymorphic microsatellite loci for dreissenid mussels, including the two species that have invaded many freshwater habitats in Eurasia and North America, where they cause serious industrial fouling damage and ecological alterations. These new loci will aid our understanding of their genetic patterns in invasive populations as well as throughout their native Ponto-Caspian distributions. Eight new loci for the zebra mussel Dreissena polymorpha and six for the quagga mussel D. rostriformis bugensis were compared with new results from six previously published loci to generate a robust molecular toolkit for dreissenid mussels and their relatives. Taxa tested include D. polymorpha , D. r. bugensis , D. r. grimmi , D. stankovici , the "living fossil" Congeria kusceri , and the dark false mussel Mytilopsis leucophaeata (the latter also is invasive). Overall, most of the 24 zebra mussel (N=583) and 13 quagga mussel (N=269) population samples conformed to Hardy-Weinberg equilibrium expectations for the new loci following Bonferroni correction. The 11 loci (eight new, three previously published) evaluated for D. polymorpha averaged 35.1 alleles and 0.72 mean observed heterozygosity per locus, and 25.3 and 0.75 for the nine loci (six new, three previously published) developed for D. r. bugensis . All but three of these loci successfully amplified the other species of Dreissena , and all but one also amplified Congeria and Mytilopsis . All species and populations tested were significantly divergent using the microsatellite data, with neighbor-joining trees reflecting their evolutionary relationships; our results reveal broad utility for resolving their biogeographic, evolutionary, population, and ecological patterns.
Fig. 3 in The Study Of Age-Related Variability Of Pigmentation Patterns Of The Shells Of Dreissena Polymorpha (Bivalvia, Dreissenidae) From Different Parts Of It'S Range
Fig. 3. Latitudinal variability of the number of pattern types. Samples: 1–6 — the Rybinsk Reservoir; 7–10 — the Gorky Reservoir; 11 — Lake Plescheevo; 12 — the Kama Reservoir; 13 — Lake Forelevoe; 14 — Northern Dvina River; 15 — the Chograi Reservoir; 16 — RR–1 channel; 17 — Lake Sharony; 18 — Ahtuba River; 19 — Belinskiy Bank; 20 — Danube River; 21, 22 — the Perućica Reservoir; 23 — Lake Erie; 24, 25 — Lake Michigan.
Fig. 6 in The Study Of Age-Related Variability Of Pigmentation Patterns Of The Shells Of Dreissena Polymorpha (Bivalvia, Dreissenidae) From Different Parts Of It'S Range
Fig. 6. Scheme of pattern change in zebra mussel population (by the example of the Perućica Reservoir). Data for mussels of ages from 1+ to 3+ are aggregated.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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