Presión intraocular medida con tonometría de rebote en la iguana marina de Galápagos

Resumen:

La iguana marina de Galápagos (Amblyrhynchus cristatus) es el único lagarto marino del mundo y es capaz de nadar y bucear a profundidades de varios metros para buscar alimento. Por lo tanto, la fisiología de esta especie debe adaptarse tanto a ambientes terrestres como acuáticos. Hasta ahora, no se han realizado estudios que evalúen los parámetros de salud ocular en esta especie. Se capturaron iguanas marinas de Galápagos en libertad (n = 26) en el campo. La presión intraocular (PIO) se midió utilizando tonometría de rebote al comienzo y al final del período de manipulación. Se midió la producción de lágrimas mediante la prueba de Schirmer (STT) y la prueba de punto de papel absorbente endodóntico (EPPT). Se evaluaron parámetros fisiológicos de línea de base, como la frecuencia cardíaca y la temperatura corporal, así como parámetros morfométricos (peso corporal, longitud total, longitud de la cabeza hasta el ano, longitud del surco hemipeneal) y parámetros sanguíneos de línea de base (volumen globular, proteína total, lactato). La media de la PIO fue de 9,4 mm Hg (SD±1,4) y es comparable a otras especies de iguanas terrestres. La media de STT fue de 4,1 mm/minuto y la de EPPT de 11,1 mm/minuto. La PIO no varió con la longitud de la cabeza hasta el ano, el peso total, la longitud del surco hemipeneal ni entre el ojo derecho e izquierdo. La PIO fue más alta al comienzo de la manipulación en comparación con el final de la manipulación, probablemente debido al estrés inmediato asociado con la captura. La PIO no varió con el volumen globular (PCV), la proteína total (TP) ni el lactato. Estos resultados representan un primer paso para establecer una línea de base para los parámetros de salud ocular en iguanas marinas.

Más información sobre el estudio en el enlace.

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In 2022, the Galapagos Science Center (GSC) and the broader UNC & USFQ Galapagos Initiative will celebrate its 10th Anniversary. We are proud to announce the World Summit on Island Sustainability scheduled to be held on June 26–30, 2022 at the Galapagos Science Center and the Community Convention Center on San Cristobal Island.

The content of the World Summit will be distributed globally through social media and results documented through papers published in a book written as part of the Galapagos Book Series by Springer Nature and edited by Steve Walsh (UNC) & Carlos Mena (USFQ) as well as Jill Stewart (UNC) and Juan Pablo Muñoz (GSC/USC). The book will be inclusive and accessible by the broader island community including scientists, managers, residents, tourists, and government and non-government organizations.

While the most obvious goal of organizing the World Summit on Island Sustainability is to celebrate the 10th Anniversary of the GSC and the UNC-USFQ Galapagos Initiative, other goals will be addressed through special opportunities created as part of our operational planning of the World Summit.

For instance, we seek to elevate and highlight the Galapagos in the island conservation discourse, seeking to interact with other island networks in more obvious and conspicuous ways to benefit the Galapagos Islands, the UNC-USFQ Galapagos Initiative, and the world. We will seize the opportunity to further develop the I2N2 – International Islands Network-of-Networks. Further, we wish to highlight and emphasize multiple visions of a sustainable future for the Galapagos Islands and we cannot do this alone. Therefore, engaging the Ecuadorian Ministry of Environment, the Ministry of Tourism, the Government Council of Galapagos, the Galapagos National Park, and local Galapagos authorities, including government and non-government organizations and local citizen groups, is imperative.

The Galapagos Science Center on San Cristobal Island, Galapagos

Borrowing from Hawaii’s and Guam’s Green Growth Program and the Global Island Partnership, we wish to examine existing global programs that emphasize island sustainability and their incorporation into life, policies, and circumstances in the Galapagos Islands. We will also seek to enhance our connections with the institutional members of our International Galapagos Science Consortium and expand the Consortium through the recruitment of other member institutions. We will also work to benefit islands and their local communities by working with citizen groups as well as important NGOs who seek to improve the natural conditions in the Galapagos and diminish the impact of the human dimension on the future of Galapagos’ ecosystems.

Lastly, we will use the World Summit to benefit UNC & USFQ and our constituencies through a strong and vibrant communication plan about the World Summit, creating corporate relationships as sponsors, identifying funding goals through donors, and benefiting our study abroad program for student engagement in the Galapagos Islands. We plan to develop and issue a Galapagos Sustainability Communique after the World Summit that includes the vision and insights of all its participants for a sustainable Galapagos with applicability to global island settings.

We are eager to hear your perspective and have you join us at the World Summit on Island Sustainability!