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Рис. 3. Фотографии Laternula elliptica, сделанные около cтанции «Прогресс», ВосточнаЯ Антарктида. L. elliptica на морском дне с медкими камнЯми или гравием, глубина 27 м (А); несколько сифональных отверстий L. elliptica над поверхностью мЯгких осадков вокруг голотурии Staurocucumis turqueti, глубина 27 м (В); раковина L. elliptica (длина около 110 мм) на снегу около майны сраЗу после иЗвлечениЯ иЗ воды (С); пустые раковины L. elliptica на морском дне, глубина 56 м (D); раковина L. elliptica (вид с дорсального краЯ) на мЯгких осадках с камнЯми, покрытыми иЗвестковыми водорослЯми, глубина 30 м (Е); пара сифональных отверстий L. elliptica на поверхности мЯгких осадков, глубина 27 м (F). Фотографии О. Савинкина (A, B, D–F) и В. Потина (С). Fig. 3. Photographs of Laternula elliptica taken near «Progress» Research Station (East Antarctica). Softshelled clam L. elliptica on sea bottom with small stowns or gravel, depth 27 m (A); several open siphons of L. elliptica above soft bottom sediments around holothurian Staurocucumis turqueti, depth 27 m (B); a shell of L. elliptica (length about 110 mm) on snow near a dive hole just after dragging out of water (C); empty shells of L. elliptica on seafloor, depth 56 m (D); a shell of Laternula elliptica (dorsal view) on soft deposits among stones, covering by Lithothamnion, depth 30 m (E); pair of siphonal opening of L. elliptica on surface of soft sediments, depth 27 m (F). Photographs are taken by O. Savinkin (A, B, D–F) and V. Potin (C). in Species of warm-water origin Laternula elliptica (King, 1832) (Mollusca: Bivalvia: Laternulidae), a widespread mollusk in recent Antarctica

Рис. 3. Фотографии Laternula elliptica, сделанные около cтанции «Прогресс», ВосточнаЯ Антарктида. L. elliptica на морском дне с медкими камнЯми или гравием, глубина 27 м (А); несколько сифональных отверстий L. elliptica над поверхностью мЯгких осадков вокруг голотурии Staurocucumis turqueti, глубина 27 м (В); раковина L. elliptica (длина около 110 мм) на снегу около майны сраЗу после иЗвлечениЯ иЗ воды (С); пустые раковины L. elliptica на морском дне, глубина 56 м (D); раковина L. elliptica (вид с дорсального краЯ) на мЯгких осадках с камнЯми, покрытыми иЗвестковыми водорослЯми, глубина 30 м (Е); пара сифональных отверстий L. elliptica на поверхности мЯгких осадков, глубина 27 м (F). Фотографии О. Савинкина (A, B, D–F) и В. Потина (С). Fig. 3. Photographs of Laternula elliptica taken near «Progress» Research Station (East Antarctica). Softshelled clam L. elliptica on sea bottom with small stowns or gravel, depth 27 m (A); several open siphons of L. elliptica above soft bottom sediments around holothurian Staurocucumis turqueti, depth 27 m (B); a shell of L. elliptica (length about 110 mm) on snow near a dive hole just after dragging out of water (C); empty shells of L. elliptica on seafloor, depth 56 m (D); a shell of Laternula elliptica (dorsal view) on soft deposits among stones, covering by Lithothamnion, depth 30 m (E); pair of siphonal opening of L. elliptica on surface of soft sediments, depth 27 m (F). Photographs are taken by O. Savinkin (A, B, D–F) and V. Potin (C).

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Рис. 2. Laternula elliptica: А – раковина вЗрослого моллюска иЗ морЯ Дейвиса, L=87 мм, вид сбоку; Б – вид с дорсальной стороны (по: Егорова [1982]); В – расположение пустых раковин Laternula elliptica в осыпаюЩемсЯ песчаном грунте на склоне подводного холма (по рисунку иЗ полевого дневника Б.И. Сиренко, ЗИН РАН); Г – наружные отверстиЯ вводного и выводного сифонов Laternula elliptica (King, 1832) на поверхности грунта. Fig. 2. Laternula elliptica: А – shell of adult mollusc from the Davis Sea, L=87 mm, lateral view; Б – dorsal view (after: Егорова [1982]); В – empty shells of Laternula elliptica in friable sand on a slope of underwater hill (after sketch in the field journal of Dr. B.I. Sirenko, Zool. Inst. RAS); Г – external openings of inhalant and exhalant siphons of Laternula elliptica on surface of bottom deposits. in Species of warm-water origin Laternula elliptica (King, 1832) (Mollusca: Bivalvia: Laternulidae), a widespread mollusk in recent Antarctica

Рис. 2. Laternula elliptica: А – раковина вЗрослого моллюска иЗ морЯ Дейвиса, L=87 мм, вид сбоку; Б – вид с дорсальной стороны (по: Егорова [1982]); В – расположение пустых раковин Laternula elliptica в осыпаюЩемсЯ песчаном грунте на склоне подводного холма (по рисунку иЗ полевого дневника Б.И. Сиренко, ЗИН РАН); Г – наружные отверстиЯ вводного и выводного сифонов Laternula elliptica (King, 1832) на поверхности грунта. Fig. 2. Laternula elliptica: А – shell of adult mollusc from the Davis Sea, L=87 mm, lateral view; Б – dorsal view (after: Егорова [1982]); В – empty shells of Laternula elliptica in friable sand on a slope of underwater hill (after sketch in the field journal of Dr. B.I. Sirenko, Zool. Inst. RAS); Г – external openings of inhalant and exhalant siphons of Laternula elliptica on surface of bottom deposits.

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Рис. 6. Ювенильные раковины Laternula elliptica: А1, А3 – левые створки, внешний вид, H×L=3.0×4.4 мм; А2 – вид со стороны дорсального краЯ на сдвоенные створки, обраЗуюЩие по Заднему краю ЗиЯние; А4 – Замок, соединЯюЩий фрагменты раЗрушенных створок (штриховка); Б1 – праваЯ створка, внешний вид, H×L=8.5×14.0 мм; Б2 – внутреннЯЯ поверхность правой створки. Фрагменты раковины вЗрослого моллюска (L=69.7 мм): В1 – вид со стороны дорсального краЯ; В2 – фрагмент правой створки, вид сбоку. ОбоЗначениЯ: ЗК – Задний край; дК – дорсальный край; сКп – складки периостракума; м – макушка; мщ – макушечнаЯ Щель; пр – продиссоконх; хр – хондрофор; ппЛ – поддерживаюЩаЯ пластинка; дпЛ – дополнительнаЯ пластинка; син – синус. Fig. 6. Juvenile shells of Laternula elliptica: A1, A3 – left valves, external view, H×L=3.0×4.4 mm; A2 – paired valves, dorsal view, showing gape through which the siphon project; A4 – hinge with chondrophore and buttress, internal view; Б1– right valve, external view, H×L=8.5×14.0 mm; Б2 – right valve, internal view. Adult shell (L=69.7 мм): B1 – fragment of right valve, dorsal view; B2 – fragment of right valve, lateral view on umbo. Notes: ЗК – posterior margin; дК – dorsal margin; сКп – periostracal wrinkles; м – umbo; мщ – umbonal crack; пр – prodissoconch; хр – chondrophore; ппЛ – buttress; дпЛ – additional supporting plate; син – sinus. in Species of warm-water origin Laternula elliptica (King, 1832) (Mollusca: Bivalvia: Laternulidae), a widespread mollusk in recent Antarctica

Рис. 6. Ювенильные раковины Laternula elliptica: А1, А3 – левые створки, внешний вид, H×L=3.0×4.4 мм; А2 – вид со стороны дорсального краЯ на сдвоенные створки, обраЗуюЩие по Заднему краю ЗиЯние; А4 – Замок, соединЯюЩий фрагменты раЗрушенных створок (штриховка); Б1 – праваЯ створка, внешний вид, H×L=8.5×14.0 мм; Б2 – внутреннЯЯ поверхность правой створки. Фрагменты раковины вЗрослого моллюска (L=69.7 мм): В1 – вид со стороны дорсального краЯ; В2 – фрагмент правой створки, вид сбоку. ОбоЗначениЯ: ЗК – Задний край; дК – дорсальный край; сКп – складки периостракума; м – макушка; мщ – макушечнаЯ Щель; пр – продиссоконх; хр – хондрофор; ппЛ – поддерживаюЩаЯ пластинка; дпЛ – дополнительнаЯ пластинка; син – синус. Fig. 6. Juvenile shells of Laternula elliptica: A1, A3 – left valves, external view, H×L=3.0×4.4 mm; A2 – paired valves, dorsal view, showing gape through which the siphon project; A4 – hinge with chondrophore and buttress, internal view; Б1– right valve, external view, H×L=8.5×14.0 mm; Б2 – right valve, internal view. Adult shell (L=69.7 мм): B1 – fragment of right valve, dorsal view; B2 – fragment of right valve, lateral view on umbo. Notes: ЗК – posterior margin; дК – dorsal margin; сКп – periostracal wrinkles; м – umbo; мщ – umbonal crack; пр – prodissoconch; хр – chondrophore; ппЛ – buttress; дпЛ – additional supporting plate; син – sinus.

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Data from: Extensive admixture among karst-obligate salamanders reveals evidence of recent divergence and gene exchange through aquifers

<p>Karst ecosystems often contain extraordinary biodiversity, but the complex underground aquifers of karst regions present challenges for assessing and conserving stygobiont diversity and investigating their evolutionary history. We examined the karst-obligate salamanders of the Eurycea neotenes species complex in the Edwards Plateau region of central Texas using population genomics data to address questions about population connectivity and the potential for gene exchange within the underlying aquifer system. The Eurycea neotenes species complex has historically been divided into three nominal species, but their status, and spatial extent of species ranges, have remained uncertain. We discovered evidence of extensive admixture within the species complex and with adjacent lineages. We observed relatively low levels of differentiation among all sampling localities which supports the hypothesis of recent divergence. Nominal taxonomy, aquifer region and geography accounted for a modest amount of the overall population genomic variation, but these predictors were largely collinear and difficult to disentangle. Importantly, the taxonomy of the three nominal species does not reflect the admixture apparent in clustering analyses. Inference of migration events revealed a complex pattern of gene exchange, suggesting that Eurycea salamanders have a dynamic history of dispersal through the aquifer system. These results highlight the need for greater understanding of how stygobiont populations are connected via dispersal and gene exchange through karst aquifers.</p>

opencc-zeroMay 2024View details →

Data for Seropositivity to Dengue virus DENV in three neighborhoods in the periphery of a city with a recent history of outbreaks in Argentina: what can we learn from unreported cases?

<p>This release include the datasets, R scripts and interactive maps generated for the manuscript: Seropositivity to Dengue virus DENV in three neighborhoods in the periphery of a city with a recent history of outbreaks in Argentina: what can we learn from unreported cases? Authors: DA Mendicino, T Ricardo, MA Cristaldi, M Maglianesi, G Guzmán S Claussen, RG Chiaraviglio, CA Ávalos, MA Previtali. (2024).</p>

Fig. 7 in The taxonomic status of recently described Isophya taxa from Serbia (Tettigoniidae, Phaneropterinae)

Fig. 7. Distribution of Isophya modestior Brunner von Wattenwyl, 1882 based on unpublished and literature data (see Supp. file 9). Dashed line represents distribution by Hochkirch et al. (2016).

Fig. 6 in The taxonomic status of recently described Isophya taxa from Serbia (Tettigoniidae, Phaneropterinae)

Fig. 6. Syllables of Isophya modestior Brunner von Wattenwyl, 1882 showing different characteristics compared to the typical song. A. Tumane 25°C. B. Vajuga 24°C (the line under oscillogram indicates 100 ms).

Fig. 5 in The taxonomic status of recently described Isophya taxa from Serbia (Tettigoniidae, Phaneropterinae)

Fig. 5. Comparative measurements of male calling song characters in recently described taxa of Isophya Brunner von Wattenwyl, 1878 and Isophya modestior modestior Brunner von Wattenwyl, 1882. A. Main syllable length (ms). B. Number of pulses in main syllable. C. Oscillograms of male calling songs of the species of Isophya (the line under oscillogram indicates 100 ms).

Fig. 4 in The taxonomic status of recently described Isophya taxa from Serbia (Tettigoniidae, Phaneropterinae)

Fig. 4. General appearance of Isophya modestior Brunner von Wattenwyl, 1882. A–B. Green form (A: male, B: female). C–D. Melanistic form (C: male, D: female). Photos: A–B: Ionuț Ștefan Iorgu; C: Dragiša Savić; D: Laslo Horvat.

Fig. 3 in The taxonomic status of recently described Isophya taxa from Serbia (Tettigoniidae, Phaneropterinae)

Fig. 3. Species tree generated with BEAST analyzing four sequenced loci (H3, ITS2, COI, 12S) simultaneously.

Fig. 2 in The taxonomic status of recently described Isophya taxa from Serbia (Tettigoniidae, Phaneropterinae)

Fig. 2. Specimens of Isophya modestior Brunner von Wattenwyl, 1882 collected by Carl Brunner von Wattenwyl and deposited in the Natural History Museum Vienna. A. Syntype. B. Lectotype.

Fig. 1. A in The taxonomic status of recently described Isophya taxa from Serbia (Tettigoniidae, Phaneropterinae)

Fig. 1. A. Comparative measurements of recently described taxa of Isophya Brunner von Wattenwyl, 1878 and Isophya modestior modestior Brunner von Wattenwyl, 1882. Measurements presented in bar graph are used from original descriptions of type material. B. Map with localities of newly described Isophya taxa and I. modestior modestior.

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FIGURE 7. Recent discoveries. A in Deep-Sea Octocoral Biodiversity Surveys in Central California

FIGURE 7. Recent discoveries. A. Protoptilum nybakkeni (CASIZ 106702), Holotype, west of the Farallon Islands, 2900 m. B. Chromoplexaura cordellbankensis (CASIZ 207519), Paratype, MBNMS, 107 m. C. Chromoplexaura marki (CASIZ 228197), CBNMS, 97 m. D. Swiftia farallonesica (CASIZ 196930), Holotype, GFNMS, 182 m. Scale bar for A = 25 mm; scale bar for B-E = 50 mm.

Figure 10 in Notes on a recently described subspecies, and the poorly known nominate subspecies of Rüppell's Parrot, Poicephalus rueppellii mariettae and P. r. rueppellii

Figure 10. Pl. XLII in Sclater (1882): the bird illustrated was one of two females received by London Zoo in April 1882 from northern Angola, and has the blue rump characteristic of female Rüppell's Parrot Poicephalus rueppellii but which is paler in colour than that of Namibian parrots, a fact Sclater failed to notice (Jonathan Jackson, © Natural History Museum, London)

Figure 6 in Notes on a recently described subspecies, and the poorly known nominate subspecies of Rüppell's Parrot, Poicephalus rueppellii mariettae and P. r. rueppellii

Figure 6. Type material of Poicephalus rueppellii mariettae, from left to right (in both A and B): holotype, adult female, NHMUK 1889.1.20.647; paratypes, adult male, NHMUK 1878.12.31.502, and juvenile, NHMUK 1878.12.31.431, all from Otjimbingwe, Damaraland, Namibia (Jonathan Jackson, © Natural History Museum, London)

Figure 3 in Notes on a recently described subspecies, and the poorly known nominate subspecies of Rüppell's Parrot, Poicephalus rueppellii mariettae and P. r. rueppellii

Figure 3. Rüppell's Parrot Poicephalus r. rueppellii from north-west and west-central Angola; note the turquoise-blue plumage in females. (A) adult female, near Luanda, 16 September 2019 (© David & Sara Elizalde); (B) adult female, Mirador la Lua, Luanda province, 24 August 2012 (© Tommy P. Pedersen)

Figure 2 in Notes on a recently described subspecies, and the poorly known nominate subspecies of Rüppell's Parrot, Poicephalus rueppellii mariettae and P. r. rueppellii

Figure 2. Differences in the blue coloration of females of the two subspecies of Rüppell's Parrot Poicephalus rueppellii. Left-hand bird in both A and B, P. r. rueppellii from northern Angola (NHMUK 1890.4.1.21, died 7 June 1882 at London Zoo, see also Fig. 7) and right P. r. mariettae from Namibia (NHMUK 1852.5.1.16, collected by C. J. Andersson in 1850 in Namibia, see Fig. 6) (Jonathan Jackson, © Natural History Museum, London)

Figure 9 in Notes on a recently described subspecies, and the poorly known nominate subspecies of Rüppell's Parrot, Poicephalus rueppellii mariettae and P. r. rueppellii

Figure 9. Three of the four specimens received alive at London Zoo in April 1882 and which died in June 1882, from left to right: male, NHMUK 1890.4.1.19; male, NHMUK 1890.4.1.20; female, NHMUK 1890.4.1.21 (Jonathan Jackson, © Natural History Museum, London)

Figure 8 in Notes on a recently described subspecies, and the poorly known nominate subspecies of Rüppell's Parrot, Poicephalus rueppellii mariettae and P. r. rueppellii

Figure 8. Bird specimens collected by C. J. Andersson in 1850 in Damaraland (Namibia) were sold by the dealer A. D Bartlett of London and some were acquired by the British Museum, including this male (NHMUK 1852.5.1.15), on left in A and B, and female (NHMUK 1852.5.1.16) Rüppell's Parrot Poicephalus rueppellii mariettae. These specimens were seen by Strickland & Sclater (1852) and, because Andersson had not sexed the birds during preparation, due to the differences in colour it was assumed that the more colourful individual was the male (Jonathan Jackson, © Natural History Museum, London)

Figure 5 in Notes on a recently described subspecies, and the poorly known nominate subspecies of Rüppell's Parrot, Poicephalus rueppellii mariettae and P. r. rueppellii

Figure 5. Specimen of nominate Rüppell's Parrot Poicephalus rueppellii from north Angola, in the Naturalis Biodiversity Center, RMNH.AVES.209654, which is smaller and overall darker but has the blue rump and belly paler than birds from south-west Angola and Namibia (© Naturalis Biodiversity Center, Leiden)