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opennotspecifiedJun 2023View details →

FIGURE 14 in The remarkable Ponto-Caspian amphipod diversity of the lower Durso River (SW Caucasus) with the description of Litorogammarus dursi gen. et sp. nov.

FIGURE 14. Pectenogammarus oliviiformis (Greze, 1985) comb. nov., Ô (a, b, d, e, g, h, j, k), ♀ (c, f, i, l): a, c—antenna I; b—accessory flagellum of antenna I; d, f—antenna II; e—calceoli of AII; g, i—gnathopod I; h—palmar margin of chela of GnI; j, l—gnathopod II; k—palmar margin of chela of GnII.

Figure 11 in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 11. Chaetogammarus trichiatus, ♂ (A–D, F–J) and ♀ (E, K), Shahe River, Krasnodar region. A–C, epimeral plates 1–3. D, E, telson. F, pleopod 1. G, retinacula of pleopod 1. H, uropod 1. I, uropod 2; J, K, uropod 3.

Figure 8 in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 8. Chaetogammarus trichiatus, ♂ (A–C, F, G, I) and ♀ (D, E, H), Shahe River, Krasnodar region. A, antenna 1. B, accessory flagellum of antenna 1. C, D, antenna 2. E, F, gnathopod 1. G, distoventral corner of chela of gnathopod 1. H, I, gnathopod 2.

Figure 5. Morphological differentiation among the focal taxa. A in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 5. Morphological differentiation among the focal taxa. A, principal components analysis showing variability in morphospace across the first three axes (PC 1–PC 3) for males (top) and females (below). B, dendrogram based on squared Mahalanobis distances. C, boxplots depicting variation in length of selected morphological traits (corrected for body size).

Figure 3 in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 3. Mitochondrial (COI and 16S) time-calibrated tree and species delimitation results. Numbers at nodes are posterior probabilities (not shown if <0.7). Turquoise bars indicate 95% confidence intervals for node ages (shown only for supported nodes). Bars on the right depict the results of the species delimitation analyses (abbreviations: Morpho, morphology; BIN, Barcode Index number; GMYC, General Mixed Yule Coalescent; PTP, Poisson Tree Processes; ASAP, Assemble Species by Automatic Partitioning; PDT, Patristic Distance Threshold). Red stars indicate the clades of Chaetogammarus ischnus and Chaetogammarus trichiatus that were used in the multilocus Bayes factors species delimitation approach.

Figure 7. Scanning electron micrographs. A, antenna 1. B, antenna 2. C in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 7. Scanning electron micrographs. A, antenna 1. B, antenna 2. C, basis of pereopod 7. D, pereopod 3. Scale bars: 0.2 mm.

Figure 6. Scanning electron micrographs. A in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 6. Scanning electron micrographs. A, dorsal side of urosome. B, lateral head lobes. C, gnathopod 2 propodus. D, uropod 3. Scale bars: 0.2 mm.

Figure 1 in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 1. Multilocus maximum likelihood phylogeny (COI, 16S, 28S, EPRS and H3) of the Ponto-Caspian gammaroid radiation. Chaetogammarus and Spirogammarus gen. nov. species are shown with dashed branches. Focal taxa are shown with coloured branches. Strongly supported nodes in all analyses are shown with green dots, moderately supported nodes are annotated with support values from each analysis, and unsupported nodes are not annotated (see key at the top left).

Figure 10 in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 10. Chaetogammarus trichiatus, ♂, Shahe River, Krasnodar region. A, pereopod 3. B, pereopod 4. C, dactylus of pereopod 4. D, pereopod 5. E, dactylus of pereopod 5. F, pereopod 6. G, pereopod 7. H, dactylus of pereopod 7.

Figure 4 in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 4. Distribution of focal taxa. Small dots represent distribution records from the literature (after CopilaȘ-Ciocianu et al., 2023); large dots represent sequenced localities (black outline, literature data; white outline, present study). Arrows represent the type localities of Chaetogammarus trichiatus (orange) and Spirogammarus major (purple). The question mark represents a doubtful distribution record of Chaetogammarus ischnus. Green dashed lines indicate the native range.

Figure 9 in A widespread Ponto-Caspian invader with a mistaken identity: integrative taxonomy elucidates the confusing taxonomy of Trichogammarus trichiatus (= Echinogammarus) (Crustacea: Amphipoda)

Figure 9. Chaetogammarus trichiatus, ♂, Shahe River, Krasnodar region. A, labrum (upper lip). B, labium (lower lip). C, E, mandible. D, F, incisor process and pars incisiva of mandible. G, left maxilla 1. H, right maxilla 1 distal segment of palp. I, maxilla 2. J, maxilliped.

publicJul 2015View details →

dryad32/100

Data from: Migration and isolation during the turbulent Ponto-Caspian Pleistocene create high diversity in the crustacean Paramysis lacustris

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dryad28/100

Are juveniles as tolerant to salinity stress as adults?: A case study of Northern European, Ponto-Caspian and North American species

Aim: Global biodiversity and ecosystems are highly impacted by anthropogenic activities, such as climate change and introduction of non-indigenous species. As numerous species from the Ponto-Caspian region have established in the North and Baltic Seas, as well as in the Laurentian Great Lakes, there have been large number of studies examining environmental tolerance of these species to determine their future potential to spread. However, many of those studies were conducted only on adult stages, while neglecting the possibility that early life history stages might not be equally resilient. Location: Northern European, Ponto‐Caspian and North American regions. Methods: To determine if juveniles would demonstrate the same environmental tolerance as their parents, we examined the salinity tolerance of adults and juveniles of one Northern European (Gammarus salinus), one Ponto-Caspian (Pontogammarus maeoticus) and one North American species (Gammarus tigrinus). Additionally, we compared our study to that of Paiva et al. (2018), who tested the salinity tolerance of the same species using only adults. Results: Our study determined that both adults and juveniles of all three species tolerated wide ranges of salinity, with juveniles of G. salinus tolerating only slightly narrower salinity range than their parents, while those of P. maeoticus and G. tigrinus much narrower range. Additionally, we determined better survival and higher growth rates of juveniles of G. salinus in higher salinities, and better survival of P. maeoticus in lower salinities. Main conclusions: Based on juvenile salinity tolerance, our study further supported findings of Paiva et al. (2018), where Northern European species may be adapted to marine, while Ponto-Caspian to lower saline and freshwater environments. The North American species is probably adapted to intermediate salinities. As juveniles do not tolerate the same salinity stress as adults, we emphasize the importance of testing all life-history stages when predicting species resilience to environmental stressors.

opencc-zeroAug 2020View details →

opennotspecifiedDec 2007View details →

FIGURE 2. Paramysis baeri Czerniavsky, 1882 in Diversity within the Ponto-Caspian Paramysis baeri Czerniavsky sensu lato revisited: P. bakuensis G. O. Sars restored (Crustacea: Mysida: Mysidae)

FIGURE 2. Paramysis baeri Czerniavsky, 1882, lectotype, subadult ♂. Scale 1 mm.

Supplementary material 3 from: Podwysocki K, Desiderato A, Mamos T, Rewicz T, Grabowski M, Konopacka A, Bącela-Spychalska K (2024) Recent invasion of Ponto-Caspian amphipods in the Masurian Lakeland associated with human leisure activities. NeoBiota 90: 161-192. https://doi.org/10.3897/neobiota.90.109221

Results of PERMANCOVA test using 9999 permutations

Supplementary material 4 from: Podwysocki K, Desiderato A, Mamos T, Rewicz T, Grabowski M, Konopacka A, Bącela-Spychalska K (2024) Recent invasion of Ponto-Caspian amphipods in the Masurian Lakeland associated with human leisure activities. NeoBiota 90: 161-192. https://doi.org/10.3897/neobiota.90.109221

Supplementary image

Supplementary material 2 from: Podwysocki K, Desiderato A, Mamos T, Rewicz T, Grabowski M, Konopacka A, Bącela-Spychalska K (2024) Recent invasion of Ponto-Caspian amphipods in the Masurian Lakeland associated with human leisure activities. NeoBiota 90: 161-192. https://doi.org/10.3897/neobiota.90.109221

Summary of the best-fitting Bernoulli GLMM for the presence of native gammarid – Gammarus lacustris

Supplementary material 1 from: Podwysocki K, Desiderato A, Mamos T, Rewicz T, Grabowski M, Konopacka A, Bącela-Spychalska K (2024) Recent invasion of Ponto-Caspian amphipods in the Masurian Lakeland associated with human leisure activities. NeoBiota 90: 161-192. https://doi.org/10.3897/neobiota.90.109221

Metadata for each sampling site and date

opencc-by-4.0Apr 2021View details →

Fig. 6 in Ponto-Caspian And Mediterranean Faunal And Floral Records Of Upper Pleistocene-Holocene Sediments From The İzmit Gulf (Marmara Sea, Turkey)

Fig. 6 Scanning electron micrographs of selected benthic foraminiferal species identified from the İzmit Gulf drilling cores. a. Cassidulina carinata, 206/33 m. b. Cibicidoides lobatulus, 206/37.5 m: b1, spiral view; b2, umbilical view. c. Cribroelphidium gerthi, 208/1 m: c1, side view; c2, apertural edge view. d. Cribroelphidium poeyanum, 207/31 m: d1, side view; d2, apertural edge view. e. Cribroelphidium poeyanum, 208/9 m. f. Cycloforina villafranca, 208/1 m. g. Discorbinella bertheloti, 205/1.5 m: g1, spiral view; g2, umbilical view. h. Elphidium aculeatum, 208/18 m. i. Elphidium crispum, 208/1 m. j. Elphidium crispum, 206/41 m. k. Elphidium macellum, 207/22.75 m. l. Elphidium macellum, 206/41 m. m. Elphidium punctatum, 208/1 m: m1, side view; m2, apertural edge view. n. Elphidium sp. 208/1 m. o. Eponides concameratus, 206/41 m: o1, spiral view; o2, umbilical view.