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Рис. 9. Фрагменты раковин жемчужниц Dahurinaia dahurica иЗ раскопа 3 поселениЯ Константиновка-1. МасштабнаЯ линейка 5 см. Fig. 9. Fragments of pearl mussel Dahurinaia dahurica shells from excavation 3 of the Konstantinovka-1 site. Scale bar 5 cm. in Mollusks from the archaeological site Konstantinovka-1 in Primorye (Russian Far East)

Рис. 9. Фрагменты раковин жемчужниц Dahurinaia dahurica иЗ раскопа 3 поселениЯ Константиновка-1. МасштабнаЯ линейка 5 см. Fig. 9. Fragments of pearl mussel Dahurinaia dahurica shells from excavation 3 of the Konstantinovka-1 site. Scale bar 5 cm.

Рис. 8. Фрагменты раковин пресноводных моллюсков иЗ раскопов поселениЯ Константиновка-1: А, B – створка жемчужницы иЗ раскопа 1, вид снаружи и иЗнутри; C–E – створки жемчужниц Dahurinaia dahurica иЗ раскопа 2; F, G – фрагмент раковины гастроподы иЗ раскопа 2, вид с раЗных ракурсов. Масштабные линейки 2 см. Fig. 8. Fragments of freshwater mollusk shells from the Konstantinovka-1 site excavations: A, B – pearl mussel Dahurinaia dahurica from excavation 1, the inner and outer views; C–E – pearl mussel Dahurinaia dahurica from excavation 2; F, G – fragment of a gastropod shell from excavation 2, view from different angles. Scale bars 2 cm. in Mollusks from the archaeological site Konstantinovka-1 in Primorye (Russian Far East)

Рис. 8. Фрагменты раковин пресноводных моллюсков иЗ раскопов поселениЯ Константиновка-1: А, B – створка жемчужницы иЗ раскопа 1, вид снаружи и иЗнутри; C–E – створки жемчужниц Dahurinaia dahurica иЗ раскопа 2; F, G – фрагмент раковины гастроподы иЗ раскопа 2, вид с раЗных ракурсов. Масштабные линейки 2 см. Fig. 8. Fragments of freshwater mollusk shells from the Konstantinovka-1 site excavations: A, B – pearl mussel Dahurinaia dahurica from excavation 1, the inner and outer views; C–E – pearl mussel Dahurinaia dahurica from excavation 2; F, G – fragment of a gastropod shell from excavation 2, view from different angles. Scale bars 2 cm.

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Рис. 15. ПляЖи и пляЖевые танатоценоЗы б. Теляковского (июнь 2015 г.): А – северная часть бухты: пляЖ и валунно-глыбовая литораль; В – срединная часть бухты; С – массовые выбросы устриц (Crassostrea gigas), мидий (Crenomytilus grayanus) и модиолусов (Modiolus kurilensis) в северной части бухты; D – выбросы спиЗулы (Spisula sachalinensis) в срединной части бухты. Fig. 15. Beaches and beach thanatocoenoses of Telyakovskogo Bay (June 2015): A – northern part of the bay: a beach and rocky intertidal zone; B – middle part of the bay; C – abundant strandings of oysters (Crassostrea gigas), mussels (Crenomytilus grayanus and Modiolus kurilensis) in the northern part; D – strandings of Spisula sachalinensis in the middle part. in Mollusks from the shell-midden of the Telyakovskogo 2 site in southern Primorye (Yankovskaya culture), their paleoecology and role in paleoeconomy

Рис. 15. ПляЖи и пляЖевые танатоценоЗы б. Теляковского (июнь 2015 г.): А – северная часть бухты: пляЖ и валунно-глыбовая литораль; В – срединная часть бухты; С – массовые выбросы устриц (Crassostrea gigas), мидий (Crenomytilus grayanus) и модиолусов (Modiolus kurilensis) в северной части бухты; D – выбросы спиЗулы (Spisula sachalinensis) в срединной части бухты. Fig. 15. Beaches and beach thanatocoenoses of Telyakovskogo Bay (June 2015): A – northern part of the bay: a beach and rocky intertidal zone; B – middle part of the bay; C – abundant strandings of oysters (Crassostrea gigas), mussels (Crenomytilus grayanus and Modiolus kurilensis) in the northern part; D – strandings of Spisula sachalinensis in the middle part.

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Рис. 6. Характер фрагментации створок мидии Грея (Crenomytilus grayanus) иЗ раскопа 1. Fig. 6. Fragmentation patterns of valves of the giant mussel ((Crenomytilus grayanus) from excavation 1. in Mollusks from the shell-midden of the Telyakovskogo 2 site in southern Primorye (Yankovskaya culture), their paleoecology and role in paleoeconomy

Рис. 6. Характер фрагментации створок мидии Грея (Crenomytilus grayanus) иЗ раскопа 1. Fig. 6. Fragmentation patterns of valves of the giant mussel ((Crenomytilus grayanus) from excavation 1.

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Data from: Growth and longevity of the endangered freshwater pearl mussel (Margaritifera margaritifera): Implications for conservation and management

Key life-history data, such as growth and age, are necessary to effectively manage and conserve threatened freshwater mussel species. Traditionally growth and age studies require large yet destructive sample sizes covering all age classes. Such methods pose a risk to populations of conservation concern, and therefore alternative methods that need only limited sample sizes are necessitated to prevent further threats to such populations. We applied retrospective shell growth at age reconstructions to 98 critically endangered freshwater pearl mussel (FPM) individuals from 34 populations across Finland and Sweden, enabling the use of extremely small sample sizes (n = 1–6 per population). We compared the performance of six different growth models with the reconstructed size-at-age data across FPM juvenile (<20 years old) and adult life stages. The growth reconstruction model showed reasonable skill in reconstructing FPM growth patterns. The von Bertalanffy model was shown to be a good general descriptor of growth for FPM, but it systematically underestimated the asymptotic size. The power law model was the most accurate in estimating juvenile growth (lowest deviances from the size-at-age data). FPM showed great variability in longevity (Amax = 54–254 years) and growth constant k (0.018– 0.057 year-1). Our results show that reasonable estimates of growth can be attained even when sample sizes are extremely limited. The results can be further applied to gain knowledge on the population's age structure, size at maturation, and recovery potential. The methodology is applicable to other freshwater mussel species of conservation concern.

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Рис. 3. Микроскульптура наружной поверхности глохидиальных створок Nodularia amurensis (А – р. РаЗдольнаЯ; B – р. Амур, Б. Уссурийский остров) и Middendorffinaia sujfunensis (С): A – участок створки ниже аддуктора; B – центральнаЯ часть створки (район аддуктора); C – у лигамента. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 2 мкм. in Morphology of glochidia of the freshwater mussels Nodularia amurensis and Middendorffinaia sujfunensis (Bivalvia: Unionidae: Nodulariinae) from the Russian Far East

Рис. 3. Микроскульптура наружной поверхности глохидиальных створок Nodularia amurensis (А – р. РаЗдольнаЯ; B – р. Амур, Б. Уссурийский остров) и Middendorffinaia sujfunensis (С): A – участок створки ниже аддуктора; B – центральнаЯ часть створки (район аддуктора); C – у лигамента. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 2 мкм.

Рис. 4. Микроскульптура наружной поверхности глохидиальных створок перловиц Nodularia biwae (A, D – увеличенный фрагмент) и Lanceolaria grayana (B, C – увеличенный фрагмент) иЗ Японии, о-в Хонсю. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 1 мкм (А, В) и 2 мкм (C, D). Fig. 4. Microsculpture of external surface of glochidia of mussels Nodularia biwae (A, D – fragment) and Lanceolaria grayana (B, C – fragment) from Honshu Is., Japan. Scanning electron microscopy. Scale bar 1µm (А, В) and 2 µm (C, D). in Morphology of glochidia of the freshwater mussels Nodularia amurensis and Middendorffinaia sujfunensis (Bivalvia: Unionidae: Nodulariinae) from the Russian Far East

Рис. 4. Микроскульптура наружной поверхности глохидиальных створок перловиц Nodularia biwae (A, D – увеличенный фрагмент) и Lanceolaria grayana (B, C – увеличенный фрагмент) иЗ Японии, о-в Хонсю. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 1 мкм (А, В) и 2 мкм (C, D). Fig. 4. Microsculpture of external surface of glochidia of mussels Nodularia biwae (A, D – fragment) and Lanceolaria grayana (B, C – fragment) from Honshu Is., Japan. Scanning electron microscopy. Scale bar 1µm (А, В) and 2 µm (C, D).

Fig. 1 in Morphology of glochidia of the freshwater mussels Nodularia amurensis and Middendorffinaia sujfunensis (Bivalvia: Unionidae: Nodulariinae) from the Russian Far East

Fig. 1. Glochidia of Nodularia amurensis from various view angles: А – Razdolnaya River; B, С – Amur River, Petrovskaya channel; D – Amur River, B. Ussuriysky Island. Abbreviations: lig – ligament; v.a – ventral angle; l.th – larval thread; v – valve of open glochidial shell. Scanning electron microscopy. Scale bar 2 µm.

Fig. 2 in Morphology of glochidia of the freshwater mussels Nodularia amurensis and Middendorffinaia sujfunensis (Bivalvia: Unionidae: Nodulariinae) from the Russian Far East

Fig. 2. Glochidia of Middendorffinaia sujfunensis from various view angles. Abbreviations: lig – ligament; v.a – ventral angle; l.th – larval thread; v – valve of open glochidial shell. Scanning electron microscopy. Scale bar: 2 µm.

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Geographical distribution of the Mediterranean mussel Mytilus galloprovincialis Lamarck, 1819 in the Sea of Japan. in The extension of the distributional range of an invasive mussel, Mytilus galloprovincialis (Bivalvia: Mytilidae) in the Sea of Japan

Geographical distribution of the Mediterranean mussel Mytilus galloprovincialis Lamarck, 1819 in the Sea of Japan.

Рис. 2. Глохидии Middendorffinaia sujfunensis с раЗных ракурсов. ОбоЗначениЯ: lig – лигамент; v.a – вентральный угол; l.th – личиночнаЯ нить; v – створка открытой глохидиальной раковины. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 2 мкм. in Morphology of glochidia of the freshwater mussels Nodularia amurensis and Middendorffinaia sujfunensis (Bivalvia: Unionidae: Nodulariinae) from the Russian Far East

Рис. 2. Глохидии Middendorffinaia sujfunensis с раЗных ракурсов. ОбоЗначениЯ: lig – лигамент; v.a – вентральный угол; l.th – личиночнаЯ нить; v – створка открытой глохидиальной раковины. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 2 мкм.

Fig. 3 in Morphology of glochidia of the freshwater mussels Nodularia amurensis and Middendorffinaia sujfunensis (Bivalvia: Unionidae: Nodulariinae) from the Russian Far East

Fig. 3. Microsculpture of external surface of glochidia of Nodularia amurensis (А – Razdolnaya River; B – Amur River, B. Ussuriysky Island) and Middendorffinaia sujfunensis (С): A – part of valve down the adductor; B – cenral part of valve (adductor); C – near ligament. Scanning electron microscopy. Scale bar 2 µm.

Рис. 1. Глохидии Nodularia amurensis с раЗных ракурсов: А – р. РаЗдольнаЯ; B, С – р. Амур, ПетровскаЯ протока; D – р. Амур, Б. Уссурийский остров. ОбоЗначениЯ: lig – лигамент; v.a – вентральный угол; l.th – личиночнаЯ нить; v – створка открытой глохидиальной раковины. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 2 мкм. in Morphology of glochidia of the freshwater mussels Nodularia amurensis and Middendorffinaia sujfunensis (Bivalvia: Unionidae: Nodulariinae) from the Russian Far East

Рис. 1. Глохидии Nodularia amurensis с раЗных ракурсов: А – р. РаЗдольнаЯ; B, С – р. Амур, ПетровскаЯ протока; D – р. Амур, Б. Уссурийский остров. ОбоЗначениЯ: lig – лигамент; v.a – вентральный угол; l.th – личиночнаЯ нить; v – створка открытой глохидиальной раковины. СканируюЩаЯ ЭлектроннаЯ микроскопиЯ. МасШтаб 2 мкм.

Figure 2 in Predicting suitable habitat for dreissenid mussel invasion in Texas based on climatic and lake physical characteristics

Figure 2. Maxent predictions of suitable zebra mussel (Dreissena polymorpha) habitat in Texas. Shading indicates the logistic output of the Maxent model. Polygons represent state and national borders as well as major river basins within Texas.

Figure 1 in Predicting suitable habitat for dreissenid mussel invasion in Texas based on climatic and lake physical characteristics

Figure 1. Physicochemical data survey lakes. Sites categorized by TPWD (at the time of this study in 2016) as "infested" (the water body has an established, reproducing population) or "positive" (zebra mussels or their larvae have been detected on more than one occasion despite lack of evidence of a fully established, reproducing population) are indicated by red triangles and included: Lakes Austin, Belton, Bridgeport, Dean Gilbert, Lavon, Lewisville, Ray Roberts, Stillhouse Hollow, Texoma, Travis, and Waco. Sites categorized by TPWD as zebra mussel "negative" are indicated by green circles and included: Lakes Aquilla, Buchanan, Georgetown, Granbury, Granger, Hubbard Creek, Inks, Lady Bird, LBJ, Limestone, Marble Falls, Palo Pinto, Pflugerville, Possum Kingdom, Proctor, and Whitney.

Figure 4 in Predicting suitable habitat for dreissenid mussel invasion in Texas based on climatic and lake physical characteristics

Figure 4. Biplot of components 1 and 2 (top) and 1 and 3 (bottom) from Principal Component Analysis of water quality variables in 27 study lakes. Variables that predominated in each component (|factor loading| ≥ 0.50) are shown on the appropriate axes. Individual lake data are represented by symbols, with open circles representing lakes without previously reported incidences of zebra mussels (absent, 16 lakes), and solid circles those known to harbor the invasive species (present, 11 lakes) at the time of sampling (October 2016). No separation between the two lake groups is evident in either of the biplots. Ca, calcium, N, nitrogen; P, phosphorous.

Figure 3 in Predicting suitable habitat for dreissenid mussel invasion in Texas based on climatic and lake physical characteristics

Figure 3. Maxent predictions of suitable quagga mussel (Dreissena bugensis) habitat in Texas. Shading indicates the logistic output of the Maxent model. Polygons represent state and national borders as well as major river basins within Texas.

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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.

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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.