Results 91 to 100 of about 2,801 (215)

Nuestros Recursos - Tortuga Charapa del Amazonas

open access: yes, 1992
Documental sobre la tortuga charapa del Amazonas, su anatomía, hábitat, comportamiento y proceso reproductivo.#PatrimonioAudiovisual#Utadeo ...
Universidad de Bogotá Jorge Tadeo Lozano - Audiovisuales
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Implementación De Un Nuevo Ritmo Reproductivo En Conejas Bajo Un Sistema De Producción Semi-Intensivo En La Unidad Agro Ambiental El Tíbar

open access: yes, 2021
La UAA El Tibar, de la Universidad de Cundinamarca seccional Ubaté, cuenta con un espacio destinado a la cunicultura, esta se maneja bajo el sistema reproductivo tradicional o extensivo y de esta manera no permite tener un sistema productivo más ...
Conejo Sánchez, Jorge Eliecer
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Prevalencia del síndrome respiratorio y reproductivo porcino en el Perú [PDF]

open access: yes, 2022
El Síndrome Respiratorio Reproductivo Porcino (PRRS) es una enfermedad viral que se caracteriza por ocasionar tanto problemas respiratorios como reproductivos en cerdos de todas las edades y ocasiona pérdidas productivas y económicas de gran impacto ...
Navarro Polo, Karla Paola   +1 more
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Phenylalanine 15N enrichment likely indicates fungal‐derived organic nutrient acquisition in mycoheterotrophic plants across fungal guilds

open access: yesNew Phytologist, Volume 250, Issue 6, Page 3990-4001, June 2026.
Summary Beyond fully mycoheterotrophic plants, many green plants may also obtain carbon from fungal partners. However, bulk stable isotope analyses often lack sufficient resolution in arbuscular mycorrhizal and rhizoctonia‐associated orchid systems, limiting inference of fungal‐derived organic nutrient acquisition.
Kenji Suetsugu   +3 more
wiley   +1 more source

Sistemas reproductivos de las plantas en tres hábitats de la planicie costera de Paraguaná, Venezuela

open access: yesRevista de Biología Tropical, 2014
Breeding systems were evaluated for 51 plant species according to life form, pollination system, vegetation type, and phenology, in the coastal plain of Paraguaná Peninsula, Venezuela. Sexual systems were non associated to life form, pollination system, vegetation type, and phenology.
Luis José Lemus-Jiménez   +1 more
openaire   +4 more sources

Histología comparada del sistema reproductivo de cuatro especies de rayas caribeñas (Chondrichthyes: Batoidea)

open access: yes, 2009
Con el fin de comparar histológicamente los sistemas reproductivos de diferentes linajes de batoideos se examinaron 93 ejemplares (62 hembras y 31 machos) de cuatro especies: Narcine bancroftii (familia Narcinidae), Rhinobatos percellens (familia ...
Moreno, Fabián   +4 more
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The abundance of pollen coat small signaling proteins shows limited convergence between independent selfing transitions in Arabidopsis and Capsella

open access: yesNew Phytologist, Volume 250, Issue 5, Page 3460-3474, June 2026.
Summary In plants, a key example of convergence is the repeated evolution of floral traits associated with the transition from outcrossing to self‐fertilization, often resulting in the ‘selfing syndrome’ (e.g. reduced flower size and loss of scent). However, potentially overlooked changes concern the pollen coat, which plays a role in different aspects
Ömer İltaş   +7 more
wiley   +1 more source

Sistema reproductivo de Vassobia breviflora (Solanaceae) en Aguas Chiquitas, Tucumán

open access: yes, 2019
XXXVII Jornadas Argentinas de ...
Cisneros, Claudia   +4 more
openaire   +1 more source

Ecological change may be a common initiator of evolutionary pollinator shifts

open access: yesNew Phytologist, Volume 250, Issue 6, Page 3572-3583, June 2026.
Summary Although evolutionary pollinator shifts are accepted as major sources of floral and species diversity in angiosperms, the mechanisms triggering pollinator shifts remain largely unexplored. In 1970, Stebbins proposed that ecological change may be a common initiator of evolutionary pollinator shifts, but empirical tests of Stebbins' hypothesis ...
Agnes S. Dellinger
wiley   +1 more source

Polinización y sistema reproductivo en Adesmia bijuga Phil. (Fabaceae), una especie en peligro crítico en Chile central

open access: yes, 2012
Adesmia bijuga Phil. is an endemic shrub in central Chile, classified as a critically endangered species of plant. After more than 100 years since its original description by R. A.
LILLO, DIANA   +2 more
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