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1,093 results for “Gastropods”
Fig. 4 in Revision of the stygobiont gastropod genera Plagigeyeria Tomlin, 1930 and Travunijana Grego & Glöer, 2019 (Mollusca; Gastropoda; Moitessieriidae and Hydrobiidae) in Hercegovina and adjacent regions
Fig. 4. Photos of studied localities in Hercegovina. A. Studenci, Vrilo Guljevina (LT of Plagigeyeria jakabi sp. nov.). B. Široki Brijeg, Bijelo Vrelo – Lištica 2 (LT of P. listicaensis sp. nov.) C. Donji Prolog, spring Mali Prokop (P. olsavskyi sp. nov.). Photos: Jozef Grego, Dorottya Angyal and Mário Olšavský.
Figure 4 in Predation on invasive land gastropods by a Neotropical land planarian
Figure 4. Obama ladislavii capturing Deroceras laeve: (A) planarian encountering the slug; (B) planarian attaching its anterior end to the slug; (C, D) planarian moving towards the slug's head to prevent escape; (E–H) slug surrounded by the planarian and pressed against the substrate.
Figure 1 in Predation on invasive land gastropods by a Neotropical land planarian
Figure 1. Experimental design for determining prey tracking behaviour. Solid line indicates outline of the slime trail. Dashed line indicates a possible path taken by the planarian, and X the planarian's initial position.
An updated generic classification of Cenozoic pleurotomariid gastropods, with new records from the Oligocene and Early Miocene of India
<p>Although taxonomically distinct, the Cenozoic pleurotomariids are the bottlenecked remnants of the Mesozoic members of the family in terms of morphology, with only conical forms surviving the end-Cretaceous mass extinction. Here, we propose an updated classification scheme for the Cenozoic representatives of this group, based on data from the entire Cenozoic pleurotomariid fossil record. We consider all conventional as well as several new characters so that this scheme can readily help to distinguish Cenozoic pleurotomariid genera. Following the new classification scheme, a revision of the generic status of Cenozoic species previously assigned to '<i>Pleurotomaria</i>' Defrance, 1826 is presented. Only a few Cenozoic pleurotomariid gastropods have been reported from the Indian subcontinent. Here we report four species from the Oligocene of the Kutch Basin and the Early Miocene (Burdigalian) of the Dwarka Basin of Gujarat, western India, of which two are described as new: <i>Perotrochus bermotiensis</i> n. sp. in the genus <i>Perotrochus</i> Fischer, 1885, and <i>Entemnotrochus kathiawarensis</i> n. sp., <em>Entemnotrochus </em>cf. <i>bianconii</i>, and <i>Entemnotrochus</i>? sp. 1 in the genus <i>Entemnotrochus</i> Fischer, 1885.</p>
Fig. 5. Selected gastropods from the Goychay section. A in Magneto-biostratigraphic age constraints on the palaeoenvironmental evolution of the South Caspian basin during the Early-Middle Pleistocene (Kura basin, Azerbaijan)
Fig. 5. Selected gastropods from the Goychay section. A. Theodoxus pallasi; B. Theodoxus pallasi; C. Laevicaspia sp. D. Laevicaspia subcaspia; E. Caspia apsheronica; F. Caspia sp.; G. Clessiniola cf. subvariabilis; H. Ecrobia cf. grimmi; I. Laevicaspia subcaspia; J. Melanopsis bergeroni; K. Lymnaea sp.; L. Turricaspia sp.; M. Laevicaspia sp.; N. Streptocerella sp.; O. Gyraulus sp.; P. Valvata sp. (Scale bars 1 mm).
Fig. 5 in Parasitic gastropod bioerosion trace fossil on Cenomanian oysters from Le Mans, France and its ichnologic and taphonomic context
Fig. 5. Parasitic gastropod bioerosion and perforation trace Loxolenichnus stellatocinctus igen. et isp. nov., MHNLM 2015.2.244, holotype, Marnes à Pycnodonte biauriculata Formation, Upper Cenomanian, Lycée Bellevue earthmoving works, Le Mans, Sarthe Department, France; on LV of Rhynchostreon suborbiculatum (Lamarck, 1801). A. Entire LV shell with the arrow showing the perforation. B. LV (viewed from inside), the arrow shows the opening of the perforation on the inner side of the shell, diascopic illumination. Outer (C) and inner (D) sides of the shell, close-ups of the perforation, the dashed line delimitates approximately the course of the perforation through the shell, diascopic illumination. E. Positive X-ray print of the perforation.
Fig. 6 in Parasitic gastropod bioerosion trace fossil on Cenomanian oysters from Le Mans, France and its ichnologic and taphonomic context
Fig. 6. Parasitic gastropod bioerosion trace Loxolenichnus stellatocinctus igen. et isp. nov., MHNLM 2015.2.346 and MHNLM 2015.2.347, paratypes; lower Campanian Inoceramus lingua–Goniotheuthis quadrata Zone, quarry near Höver, Germany. A. Outer side of an oyster valve, accommodating two specimens of L. stellatocinctus (arrows). B. Close-up of the two specimens and the multiple perforations. C. Inner side of the oyster valve showing two of the perforations reaching the adductor muscle pad. Outer (D) and inner (E) sides of an oyster valve with a marginal L. stellatocinctus. F. Close-up of D, note the two concentric stellate rims and the marginal notch.
Figures 4-13 in Nucella demouthae, A New Species of Late Miocene Muricid Gastropod From Northern California, U.S.A.
Figures 4-13. Nucella demouthae Powell, Roth, and Garcia n. sp., paratypes. Mature specimens: 4, 5. CASG 78594, height 43.6 mm, width 24.5 mm (incomplete specimen). 4. Adapertural view, 5. Apertural view. 6, 7. CASG 78595, height 36.0 mm, width 25.2 mm. Immature specimens: 6. Adapertural view, 7. Apertural view. 8. 9. CASG 78596, height 32.1 mm, width 18.9 mm. 8. Adapertural view, 9. Apertural view. 10, 11. CASG 78597, height 29.8 mm, 17.5 mm. CASG 78598, 19.2 mm, width 11.8 mm. 10. Adapertural view, 11, Apertural view. 12, 13. CASG 78599, height 13.1 mm, width 8.8 mm. 12. Adapertural view, 13. Apertural view. Note that immature specimens do not have a flared lip.
Dataset from Castel et al. 'Genetic sex determination in three closely related hydrothermal vent gastropods, including one species with intersex individuals'
<p>This is the dataset used in "Genetic sex determination in three closely related hydrothermal vent gastropods, including one species with intersex individuals"<br>Castel J, Pradillon F, Cueff V, Leger G, Daguin-Thiébaut C, Ruault S, Mary J, Hourdez S, Jollivet D, and Broquet T</p>
FIG. 4 in A neritid gastropod name "Theodoxus dniestroviensis Put', 1972" is a junior subjective synonym of Th. fluviatilis (L., 1758): decision based on the topotypic specimens study
FIG. 4. Shells of Theodoxus fluviatilis (Linnaeus, 1758). A–C. Three topotypes of "Theodoxus dniestroviensis", NMNH NASU, PD, no number, locality 1. D. Lectotype of Th. dniestroviensis, designated here, locality 1, photo reproduced after Put', 1972. E. Specimen from Seret River, IZAN #614, locality 2. F. Specimen from Hnizna River, IZAN #616, locality 4. G. Specimen from Strypa River, IZAN #615, locality 3. H, I. Specimens from Dniester River, IZAN #333, locality 6. K. Specimen from Dniester River, IZAN #335, locality 5. L. Th. obliteratus-morphotype, ZIN #5912/1, locality 7. M. Lectotype of Th. lacrymans-morphotype, ZIN #6052/1, locality 8. N. Lectotype of Th. alboguttatus-morphotype, ZIN #6051/1, locality 8. O. Lectotype of Th. pulcherrimus-morphotype, ZIN #6053/1, locality 8. L–O. Reproduced after V. Anistratenko et al., 2020. РИС. 4. Theodoxus fluviatilis (Linnaeus, 1758). A –C. Топотипы "Theodoxus dniestroviensis", NMNH NASU, PD, беЗ номера, локалитет 1. D. Лектотип Th. dniestroviensis, обоЗначен Здесь, локалитет 1, фото воспроиЗведено по Put', 1972. E. ЭкЗемпляр иЗ р. Серет, IZAN #614, локалитет 2. F. ЭкЗемпляр иЗ р. ГниЗна, IZAN #616, локалитет 4. G. ЭкЗемпляр иЗ р. Стрыпа, IZAN #615, локалитет 3. H, I. ЭкЗемпляры иЗ р. Днестр, IZAN #333, локалитет 6. K. ЭкЗемпляр иЗ р. Днестр, IZAN #335, локалитет 5. L. Морфотип Th. obliteratus, ZIN #5912/1, локалитет 7. M. Лектотип морфотипа Th. lacrymans, ZIN #6052/1, локалитет 8. N. Лектотип морфотипа Th. alboguttatus, ZIN #6051/1, локалитет 8. O. Лектотип морфотипа Th. pulcherrimus, ZIN #6053/1, локалитет 8. L–O. ВоспроиЗведены по V. Anistratenko et al., 2020.
FIG. 3 in A neritid gastropod name "Theodoxus dniestroviensis Put', 1972" is a junior subjective synonym of Th. fluviatilis (L., 1758): decision based on the topotypic specimens study
FIG. 3. Selected ecotopes of the Dniester River near Monastyrok village, locality 6 (A, B) and Halych village, locality 5 (C, D). Photo E. Degtyarenko. РИС. 3. Некоторые Экотопы р. Днестр воЗле с. Монастырок, локалитет 6 (A, B) и с. Галич, локалитет 5 (C, D). Фото Е. Дегтяренко.
FIG. 1 in A neritid gastropod name "Theodoxus dniestroviensis Put', 1972" is a junior subjective synonym of Th. fluviatilis (L., 1758): decision based on the topotypic specimens study
FIG. 1. Map of the study area with indication of sampling points of Theodoxus. The numbers of localities correspond to those in the Table 1. РИС. 1. Карта иЗученного региона с укаЗанием точек сбора Theodoxus. Номера локалитетов соответствуют таковым в Табл. 1.
FIG. 2 in A neritid gastropod name "Theodoxus dniestroviensis Put', 1972" is a junior subjective synonym of Th. fluviatilis (L., 1758): decision based on the topotypic specimens study
FIG. 2. Some lots of river nerites collected by A.L. Put' on May 26, 1950 from the Dniester River near Rukhotyn village, the type locality of "Theodoxus dniestroviensis" (Fig. 1, locality 1). РИС. 2. Некоторые пробы лунок, собранные А.Л. Путем 26 мая 1950 года иЗ р. Днестр воЗле с. Рухотин, типового местонахоЖдения "Theodoxus dniestroviensis" (Рис. 1, локалитет 1).
Fig. 2 in A New Cleaning Method for Accurate Examination of Freshwater Gastropod Shell Specimens Covered with Iron-rich Deposits
Fig. 2. Shell surfaces of penultimate whorl of Semisulcospira niponica before and after treatments. The specimens and their order are the same as in Fig. 1. Scale bars: 1 mm.
Fig. 7 in A New Cleaning Method for Accurate Examination of Freshwater Gastropod Shell Specimens Covered with Iron-rich Deposits
Fig. 7. Specimens of freshwater and brackish water snails after treatments with 20% ammonium thioglycolate. A, B, Clithon sp., KUZ Z3739; C, D, Heterogen japonica, KUZ Z3737; E, F, Stenomelania hastula, KUZ Z3738; G, H, Semisulcospira decipiens KUZ Z3736; A, C, E, G, Before cleaning; B, D, F, H, After cleaning. Scale bar: 10 mm.
Fig. 1 in A New Cleaning Method for Accurate Examination of Freshwater Gastropod Shell Specimens Covered with Iron-rich Deposits
Fig. 1. Specimens of Semisulcospira niponica before and after treatments. A, Before treatment; B–G, After treatment with sodium hypochlorite (B, C, 3%, KUZ Z3712–Z3713; D, E, 6%, Z3714–Z3715; F, G, 12%, Z3716–Z3717; B, D, F, AP-opened; C, E, G, AP-closed); H–M, After treatment with ammonium thioglycolate; N–S, After treatment with ammonium thioglycolate followed by treatment with 3% sodium hypochlorite (H, I, N, O, 5%, KUZ Z3718–Z3719; J, K, P, Q, 10%, Z3720–Z3721; L, M, R, S, 20%, Z3722–Z3723; H, J, L, N, P, R, AP-opened; I, K, M, O, Q, S, AP-closed). Scale bar: 10 mm.
Fig. 3 in A New Cleaning Method for Accurate Examination of Freshwater Gastropod Shell Specimens Covered with Iron-rich Deposits
Fig. 3. Specimens of Semisulcospira reticulata before and after treatments. A, Before treatment; B–G, After treatment with sodium hypochlorite (B, C, 3%, KUZ Z3724–Z3725; D, E, 6%, Z3726–Z3727; F, G, 12%, Z3728–Z3729; B, D, F, AP-opened; C, E, G, AP-closed); H–M, After treatment with ammonium thioglycolate (H, I, 5%, KUZ Z3730–Z3731; J, K, 10%, Z3732–Z3733; L, M, 20%, Z3734–Z3735; H, J, L, APopened; I, K, M, AP-closed). Scale bar: 10 mm.
Fig. 4 in A New Cleaning Method for Accurate Examination of Freshwater Gastropod Shell Specimens Covered with Iron-rich Deposits
Fig. 4. Shell surfaces of penultimate whorl of Semisulcospira reticulata before and after treatments. The specimens and their order are the same as in Fig. 3. Scale bars: 2 mm.
Fig. 6 in A New Cleaning Method for Accurate Examination of Freshwater Gastropod Shell Specimens Covered with Iron-rich Deposits
Fig. 6. SEM observations of cross sections (A–F) and inner surfaces (G–J) of outer lips. A, Semisulcospira niponica before treatment; B, S. niponica after treatment with 12% sodium hypochlorite, KUZ Z3716; C, S. niponica after treatment with 20% ammonium thioglycolate, KUZ Z3722; D, G, S. reticulata before treatment; E, H, AP-opened S. reticulata after treatment with 12% sodium hypochlorite, KUZ Z3728; F, I, AP-closed S. reticulata after treatment with 20% ammonium thioglycolate, KUZ Z3734; J, AP-opened S. reticulata after treatment with 20% ammonium thioglycolate, KUZ Z3735. Scale bars: 100 µm (A–F), 10 µm (G–J). Abbreviations: CCL, calcium carbonate layer; PL, periostracum layer.
Fig. 2 in Circulation Pathways Of Trematodes Of Freshwater Gastropod Mollusks In Forest Biocenoses Of The Ukrainian Polissia
Fig. 2. Two-host life cycles of trematodes: а — alternation hosts; b — proportion of different classes of definitive hosts in life cycles.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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