Results 31 to 40 of about 1,289 (111)
Terra Latinoamericana, 2023 En los ecosistemas de zonas áridas y semiáridas la producción de alimentos es cada vez más compleja. Uno de los efectos más importantes es la desertificación donde el agua tiene un papel primordial.
Ramón Jaime Holguín-Peña +2 more
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Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations
Biotropica, Volume 57, Issue 6, November 2025.In this study, we scrutinized floral enantiostyly in Mormodes orchids, a unique trait within Orchidaceae first observed by Charles Darwin. We hypothesize how intricate column twisting drives strategic pollinarium placement onto opposite sides of the thorax of male euglossine bees, enhancing cross‐pollination.
Arthur Domingos‐Melo +2 more
wiley +1 more source
International Journal of Zoology, Volume 2025, Issue 1, 2025.The reproductive cycle of Larkinia grandis (Broderip and G.B. Sowerby I, 1829) from the NW Mexican Pacific was analyzed in relation to environmental variables, condition index (CI), and biochemical composition of different tissues. A total of 960 clams (80/month; 44.5–142.0 mm, shell height) were collected from the El Cohui estuary in the Navachiste ...
Maria Isabel Sotelo-Gonzalez +8 more
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Revista del Museo de Antropologia, 2009 En poblaciones vivas, los camélidos silvestres sudamericanos son sexados a partir de la observación de su conducta social y reproductiva. Por lo general, tanto biólogos como arqueólogos asumen la ausencia de caracteres morfológicos que evidencien un ...
Cristian Ariel Kaufmann +1 more
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Tecnociencia, 2020 Se determinó los aspectos biométricos, y el desarrollo gonadal de la concha negra Anadara tuberculosa en el estero Caté, localizado en el Golfo de Montijo, a los 7º 44’ 25” N y 81º 13’ 32” O.
Annisamyd Del Cid E. +5 more
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Insect Conservation and Diversity, Volume 17, Issue 4, Page 651-675, July 2024.A double star‐like pattern in the COI haplotype network of Erebia palarica suggests a demographic expansion from two ancestral populations in this Iberian montane endemic. Seven microsatellite markers revealed a pattern of isolation by distance (IBD) along the Cantabrian Mountains, as opposed to different levels of genetic structure found in western ...
Laura Torrado‐Blanco +4 more
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Morfometría del Barranco de Santiago, Gomera (Islas Canarias)
Estudios Geologicos, 2000 El barranco de Santiago forma una cuenca fluvial al sur de Gomera que recoge en su área las alturas del pico Garajonay (1.487 m) y tras algo más de 10 km vierte sus aguas en el Océano Atlántico.
C. Martín Escorza
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Nuclear optical density as a diagnostic indicator in papillary thyroid carcinoma
Revista Cubana de Investigaciones Biomédicas, 2020 Background: Papillary thyroid carcinoma is the most frequent cause of endocrine cancer. It is an histological variant with the best prognosis, however, sometimes it is a reason for significant diagnostic doubts with other variants of torpid evolution ...
Deimarys Toledo Hidalgo +3 more
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Ecosistemas y Recursos Agropecuarios, 2014 Se colectarón setenta y nueve organismo adultos del camarón blanco Penaeus setiferus (Linnaeus, 1767) frente a las costas de Campeche, al sur del Golfo de México.
Juan Acosta-Jimeno
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Boletín de la Sociedad Española de Cerámica y Vidrio, 2003 The aim of this work is the archaeometric characterization of the ceramics found in the archaeological excavations carried out in the Hospital de las Cinco Llagas (Seville, Spain).
Polvorinos del Río, A. J. +3 more
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