Results 1 to 10 of about 1,262 (110)

Unveiling the Wing Shape Variation in Northern Altiplano Ecosystems: The Example of the Butterfly Phulia nymphula Using Geometric Morphometrics [PDF]

open access: yesAnimals
The Andean Altiplano, characterized by its extreme climatic conditions and high levels of biodiversity, provides a unique environment for studying ecological and evolutionary adaptations in insect morphology.
Thania Acuña-Valenzuela   +9 more
doaj   +2 more sources

Functional Morphology of the Scaphoid in Extant African Apes, Humans and Fossil Hominins. [PDF]

open access: yesAm J Biol Anthropol
ABSTRACT Objectives The morphology of the hominoid scaphoid has played a key role in functional and evolutionary hypotheses related to the emergence of hominin bipedalism and tool use. However, the scaphoid's complex morphology is challenging to comparatively analyze via traditional 2D linear measurements.
Steer NG   +5 more
europepmc   +2 more sources

An outsider on the Antarctic Peninsula: A new record of the non-native moth Plodia interpunctella (Lepidoptera: Pyralidae). [PDF]

open access: yesEcol Evol
This text reports the discovery of the microlepidopteran Plodia interpunctella at the Chilean Yelcho scientific station on Doumer Island, near the west coast of the Antarctic Peninsula. Plodia interpunctella is a global pest known for surviving in stored food for extended periods.
Benitez HA   +12 more
europepmc   +2 more sources

The life history of Itylos titicaca (Weymer 1890) (Lepidoptera, Lycaenidae, Polyommatina) at 5200 m in the Chilean altiplano [PDF]

open access: yesNota Lepidopterologica, 2022
Itylos titicaca (Weyner 1890) has been reported to have a narrow distribution range associated with Andean wetlands called “bofedales” in Peru, Bolivia, northeast Chile and northwest Argentina.
Amado Villalobos-Leiva   +5 more
doaj   +3 more sources

Morfometría de Sceloporus variabilis (Wiegmann 1834; Sauria: Phrynosomatidae) en tres ecosistemas de Veracruz, México

open access: yesEcosistemas y Recursos Agropecuarios, 2023
La morfometría lineal y geométrica son herramientas que evalúan la variación morfológica de los individuos de una especie en función del ambiente donde sus poblaciones habitan.
Roberto Carlos Montiel-Martínez   +6 more
doaj   +1 more source

Biometría y morfometría comparada de las subespecies de escribano palustre, Emberiza schoeniclus witherbyi y E. s. schoeniclus en el valle del Ebro [PDF]

open access: yesMunibe Ciencias Naturales, 2022
El escribano palustre iberoriental está catalogado como “en peligro de extinción”. Sus zonas de cría son generalmente bien conocidas, pero no lo son tanto sus posibles desplazamientos fuera de la época reproductora ni sus localidades de invernada ...
David Mazuelas, Oscar Gutiérrez
doaj   +1 more source

Fruto, semilla y germinación de Ladenbergia oblongifolia (Humb. ex Mutis) L. Andersson“árbol de la quina’’

open access: yesCaldasia, 2023
Debido a la presencia de propiedades medicinales, las comunidades peruanas usan indiscriminada-mente la corteza de muchas especies de “árbol de la quina” (Cinchona, Ladenbergia y Remijia; Rubia-ceae) para combatir enfermedades infecciosas,
Segundo Eloy López-Medina   +5 more
doaj   +1 more source

3D pollination biology using micro‐computed tomography and geometric morphometrics in Theobroma cacao

open access: yesApplications in Plant Sciences, Volume 11, Issue 5, September-October 2023., 2023
Abstract Premise Imaging technologies that capture three‐dimensional (3D) variation in floral morphology at micro‐ and nano‐resolutions are increasingly accessible. In herkogamous flowers, such as those of Theobroma cacao, structural barriers between anthers and stigmas represent bottlenecks that restrict pollinator size and access to reproductive ...
Katherine A. Wolcott   +4 more
wiley   +1 more source

Trilobites of Thailand's Cambrian–Ordovician Tarutao Group and their geological setting

open access: yesPapers in Palaeontology, Volume 9, Issue 5, September/October 2023., 2023
Abstract Tuff‐bearing upper Cambrian to lowermost Ordovician strata on Ko Tarutao island, Satun province, southernmost peninsular Thailand, contain a rich trilobite fauna relevant to global biostratigraphy, peri‐Gondwanan palaeogeography and shifting evolutionary mode.
Shelly J. Wernette   +3 more
wiley   +1 more source

Análisis de la variabilidad geoespacial de la fragilidad morfométrica en la cuenca alta del Río Sauce Chico, Argentina

open access: yesRevista de la Facultad de Agronomía, 2021
La caracterización morfométrica permite, por medio de la definición de parámetros de forma, relieve y red de drenaje, generar una descripción de la dinámica hídrica superficial y riesgo de erosión, estableciendo su fragilidad. Esta última se expresa por
Adriana C. Guzmán   +2 more
doaj   +1 more source

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