Por favor, use este identificador para citar o enlazar este ítem:
http://cibnor.repositorioinstitucional.mx/jspui/handle/1001/1830| Sexual Dimorphism and Foraging Trips of the Laysan Albatross (Phoebastria immutabilis) on Guadalupe Island | |
| JULIO CESAR HERNANDEZ MONTOYA MARICELA JUAREZ RODRIGUEZ Federico Alfonso Méndez Sánchez ALFONSO AGUIRRE MUNOZ EVARISTO MANUEL ROJAS MAYORAL Eduardo Inigo Elias Patricia Galina Tessaro GUSTAVO ALBERTO ARNAUD FRANCO Alfredo Ortega Rubio | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| URL: https://www.mdpi.com/2076-2615/9/6/364 DOI:10.3390/ani9060364 ISSN: 2076-2615 | |
| Laysan albatross, Guadalupe Island, sexual dimorphism, foraging trips | |
| "Sexual dimorphism in the Laysan albatross (Phoebastria immutabilis) on Guadalupe Island was evaluated during the breeding seasons of 2015–2018 by measuring and comparing 10 morphological attributes: cranial length, bill length, nostril length, cranial width, bill height, bill width, tarsus length, closed wing length, opened wing length, and wingspan length in reproductive adults (n = 135). Males were larger than females across all traits (Student’s t-test, p < 0.05, p < 0.05). We created a logistic model using stepwise regression to predict sex based on morphological variables. This model indicated four significant morphological predictor variables (z < 0.05) and was able to successfully predict the sex of P. immutabilis individuals in more than 90% of the cases. Based on these predictor variables, a web app was developed to determine the sex of the Laysan albatross in the field, providing a non-invasive method for rapid data collection that reduces costs and handling times while improving conservation e_orts. We tracked Laysan albatross (n = 36) during breeding seasons and found no significant di_erences between females and males for either trip length (GLMM, F = 0.017, DF = 1, 1, p = 0.917 > 0.05) or maximum trip distance (GLMM, F = 0.374, DF = 1, 1, p = 0.651 > 0.05). Our results suggest that both sexes show a strong preference to travel to highly productive coastal waters northeast of the breeding colony that are influenced by the California Current. The present research will serve to establish a baseline to protect this species on Guadalupe Island and highlights the importance of understanding sexual dimorphism in at-risk seabird species." | |
| Multidisciplinary Digital Publishing Institute | |
| 2019 | |
| Artículo | |
| ANIMALS | |
| Inglés | |
| ORNITOLOGÍA | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Artículos |
Cargar archivos:
| Fichero | Tamaño | Formato | |
|---|---|---|---|
| PUB-ARTICULO-4404.PDF | 1.09 MB | Adobe PDF | Visualizar/Abrir |