262,979 research outputs found
Metharpinia protuberantis Alonso
No full textMetharpinia protuberantis Alonso de Pina, 2001 Alonso de Pina, 2001: 527–537, figs. 7–11. Distribution: M Magellan Area: Argentina, Golfo Nuevo, Península Valdés, Punta Pardelas, 42 ° 37 ’S 64 ° 16 ’W, 2–5 m, 2– 4 m (gear: small dredge during low tide); Colombo beach (near Punta Pardelas), 42 ° 37 ’S 64 ° 16 ’W, 2 m (gear: small dredge during mid-tide); Bahía Nueva, Golfito, 42 ° 46 ’S 65 °02’W, 8–10 m (gear: samples extracted with a cylinder of 20 cm diameter during low tide); Crucero San José I 1984, Golfo San José, 42 ° 20 ’S 64 ° 20 ’W, 4 m (gear: Van Veen grab) (GMA 01); Golfo San José, off El Riacho, 42 º 25 ’ 20 ’’S 64 º 36 ’ 35 ’’W, low intertidal (bottom: mussel beds developed over a sandflat background) (coll. Orensanz 2005) (GMA unpubl.). Depth range: 2– 10 m. Type-locality: Magellan Area: Argentina, Golfo Nuevo, Península Valdés, Punta Pardelas, 42 ° 37 ’S 64 ° 16 ’W, 2–5 m (gear: small dredge during low tide) (GMA 01). Ecology: Collected from sandy substrata. Type material location: MACN, Buenos Aires. Remarks: See remarks under Metharpinia iado. Metharpinia protuberantis expands its distribution in Golfo San José (Alonso de Pina, unpubl.).Published as part of Alonso, Gloria M., Pina, De, Rauschert, Martin & Broyer, Claude De, 2008, A catalogue of the Antarctic and sub-Antarctic Phoxocephalidae (Crustacea: Amphipoda: Gammaridea) with taxonomic, distribution and ecological data, pp. 1-40 in Zootaxa 1752 on pages 18-19, DOI: 10.5281/zenodo.18174
Alonso, M.
No full textCentro Asturiano membership record of M. Alonso; Socio Number: 44856.https://digitalcommons.usf.edu/asturiano_membership/1092/thumbnail.jp
Parafoxiphalus longicarpus Alonso
No full textParafoxiphalus longicarpus Alonso de Pina, 2001 Alonso de Pina, 2001: 517–527, figs. 1–6. Chiesa et al., 2005: 171, 172, tables 2, 3. Distribution: M Magellan Area: Argentina, Golfo Nuevo, Península Valdés, Punta Pardelas, 42 ° 37 ’S 64 ° 16 ’W, 2–5 m (gear: small dredge during low tide); Bahía Nueva, Golfito, 42 ° 46 ’S 65 °02’W, 8–10 m (gear: samples extracted with a cylinder of 20 cm diameter during low tide) (GMA 01); Península Ushuaia, 54 ° 51 ’S 68 ° 19 ’W, 5–10 m (gear: Van Veen grab); Bahía Aguirre, 54 ° 54 ’S 65 ° 57 ’W, 30–35 m (gear: dredge) (ICH et al. 05). Type-locality: Magellan Area: Argentina, Golfo Nuevo, Península Valdés, Punta Pardelas, 42 ° 37 ’S 64 ° 16 ’W, 2–5 m (gear: small dredge during low tide) (GMA 01). Depth range: 2– 35 m. Ecology: Collected from sandy substrata. Type material location: MACN, Buenos Aires. Remarks: Parafoxiphalus Alonso de Pina, 2001 is monotypic, showing many similarities with Foxiphalus Barnard, 1979 such as the general aspect of the body, the unconstricted rostrum and the shape of the appendages; they differ principally in the setal formula on article 4 of antenna 2, in the number of calceoli on article 5 of male antenna 2, in the shape of gnathopods 1 and 2 and in the setation of peraeopods 3 and 4, epimera 1 and 2, and uropods 1 and 2. Parafoxiphalus longicarpus extends its distribution in the Magellan area from Chubut province (Alonso de Pina, 2001) to southern Tierra del Fuego in Argentina (Chiesa et al., 2005).Published as part of Alonso, Gloria M., Pina, De, Rauschert, Martin & Broyer, Claude De, 2008, A catalogue of the Antarctic and sub-Antarctic Phoxocephalidae (Crustacea: Amphipoda: Gammaridea) with taxonomic, distribution and ecological data, pp. 1-40 in Zootaxa 1752 on pages 20-21, DOI: 10.5281/zenodo.18174
Alicia Alonso. Personalidades. MD_AA_S_65 / 596
No full textAlicia Alonso junto a S. M. la Reina Sofía
Above and below-ground phenotypic traits and global DNA methylation in Erodium cicutarium plants experimentally exposed to either seed demethylation, recurrent drought or both
No full textThis study was conducted with a second generation of Erodium cicutarium plants grown in the greenhouse. Seeds were collected in 2015 from six adult broadly spaced plants at two E. cicutarium natural populations located in Cazorla mountains (Jaén province, SE Spain): Puerto del Tejo (PT, 1590 m asl) and Nava de las Correhuelas (CH, 1625 m asl) distant ca. 10 km in straight-line.
The first generation (F1) plants (N = 50 and 41 for PT and CH, respectively) were grown in pots (universal substrate COMPO SANA®, mixed in 3:1 with perlite); pots were grouped in trays which combined individuals from the two populations and were periodically rotated within the greenhouse (16h light; 25-20 °C) until the end of reproduction (ca. 6 months). Half of the trays were watered twice per week and the other half were watered once every 10-11 days, being sure that some offspring of every plant experienced the two water regimes. Autonomously self-pollinated fruits were collected in paper bags, and stored at room temperature.
In October 2016, seeds from the offspring of six mothers from each of the two water regimes and population were selected (N = 24 families: 2 populations * 2 water maternal regimes * 6 F1-mothers), with each F1-mother having a sib in the other water regime (i.e., the same six wild-plants per population provide seeds for all treatment levels). A demethylation treatment was applied to half of the seeds in which scarified seeds were submerged in 150 µl of either Control (water with DMSO 97:3, v:v) or a 0.5 mM solution of 5-azacytidine (Sigma A2385-100mg; 5azaC hereafter) during 48 h at 4 °C, a temperature in which the compound is relatively stable. Twenty days after sowing, 288 seedlings (144 control and 144 treated with 5azaC) of these second generation (F2) were transplanted into 1L pots. Other F2 extra seedlings (N = 40) were collected a few days later and processed to confirm the efficiency of the demethylation treatment at this stage and the normal appearance of individuals that reached this stage (see results in Alonso et al., 2017).
The recurrent drought treatment started three weeks after transplant, when seedlings were around six weeks old. For each maternal line (line, hereafter), half the offspring was watered at field capacity twice per week and half the offspring was watered at field capacity once every 10-11 d until the end of the experiment. The full design was a 2 x 2 factorial with three replicates per line. Flowering started one week after transplant and reached the peak (75 % individuals with flowers) at week 10. The experiment finished when plants were 17 weeks old and plants started showing signs of senescence.
Further details on traits measured and statistical methods can be obtained in Alonso, C., M. Medrano, C. M. Herrera. 2025. A dynamic epigenetic perspective on above and below-ground phenotypic responses to drought: insights from global DNA methylation in Erodium cicutarium. Plant Biology.This dataset includes one file containing data on the results of an experimental study that combined the experimental application of a demethylating agent (5-azacytidine) at seed germination stage with recurrent drought following a 2 x 2 factorial design in Erodium cicutarium (Geraniaceae). We measured global DNA methylation in adult leaves and roots, and above- and below-ground phenotypic traits related to plant development (first leaf length, time to first flower, changes in leaf and inflorescence numbers over time) and final (static) phenotype (reproductive output, above and below-ground biomass).Peer reviewe
In memoriam, Sonia Muñoz-Alonso López
No full textTexto homenaje a Sonia Muñoz-Alonso López.Depto. de Biblioteconomía y DocumentaciónFac. de Ciencias de la DocumentaciónTRUEpu
Alicia Alonso. Personalidades. MD_AA_S_7 / 75
No full textAlicia Alonso, Mahtar M¿Bow Director Geral de UNESCO
Calcrete features and age estimates from U/Th dating: Implications for the analysis of Quaternary erosion rates in the northern limb of the Sierra Nevada range (Betic Cordillera, Southeast Spain)
No full textThe Guadix topographic depression is a Neogene-Quaternary basin located in
the central sector of the Betic Cordillera at the boundary between the South Iberian
margin and the Alboran domain. This topographic depression is a plateau with an
average elevation of 1000 m in the northern limb of the Sierra Nevada range. The
continental deposits infilling the Guadix basin span time from the late Tortonian to
the Pleistocene, when a laminar calcrete developed on fine- to coarse-grained fluvial
and lacustrine deposits. The drainage pattern is strongly incised (up to 200 m) below
the calcrete layer. Four coeval subsamples from the top laminae of the calcrete were
collected and dated by the U/Th method. The resulting date is 42.6 ± 5.6 ka, which
indicates the minimum age for the cessation of active sedimentation in the Guadix
basin. Using this age, we have calculated the incision and erosion rates for the late
Pleistocene to present-day time span in the Arroyo de Gor, a highly incised canyon in
the eastern border of the Guadix basin. The minimum incision rates in this canyon
are around 4 mm/yr. We envisage the capture of the Pliocene-Pleistocene endorheic Guadix basin by the Guadalquivir River after 42 ka as the main factor triggering the
formation of the present-day eroded landscape. After the capture, the combination of
climatic (wet periods), lithological (soft and loose sediments), and topographic (high
average altitude) features allowed the development of the present-day entrenched
drainage pattern
Recommended from our members
Dr. Hector and Dr. Cleo pose in front of Captain Alonso de Pineda (photograph)
No full textDr. Hector and Dr. Cleo pose in front of Captain Alonso de Pineda
- …
