Publications

Ayala, F., Cordel-Maldonado,C., Tume-Ruiz, J.,Querevalu Tume, M., Zeta-Flores, M., Quinde, E., Rangel-Veda, A., De-la-Torre,G., Perez-Venega, DJ., Cárdenas-Alayza, S. What is going on down south?: A mini review of plastic pollution on marine megafauna in the Humboldt Current System. Regional Studies in Marine Science, 103885. https://www.sciencedirect.com/science/article/pii/S2352485524005188

Tang, L., Adkesson, MJ., Cárdenas-Alayza, S., Adamovicz, L., Deming, AC., Wellehan, JFX., Childress, A., Cortes-Hinojosa, G., Colegrove, K, Langan, J., Allender, M. (2024) Otariid gammaherpesvirus 1 in South American fur seals (Arctocephalus australis) and a novel related herpesvirus in free-ranging South American sea lions (Otaria byronia): prevalence and effects of age, sex, and sample type. Plos One 19(3) e0299404.https://doi.org/10.1371/journal.pone.0299404​

Adkesson MJ, Shlosberg. A, Lehner., AF, Rumbeiha, WK, Cárdenas-Alayza, S., Cardeña-Mormontoy, M., Kannan, K. (2024) Measurement of Persistent Organic Pollutants, Perfluorinated compounds, and Toxic Metals in the blood of Humboldt penguins (Spheniscus humboldti) at Punta San Juan, Peru using dried blood spots. Journal of Zoo and Wildlife Medicine 54(4), 713-720, (9 January 2024). https://doi.org/10.1638/2023-0047

Cárdenas-Alayza, S., Ayala, F., Ampuero-Merino, A., Majluf, P. (2023) First record of King Penguin (Aptenodytes patagonicus) on the coast of Peru. Boletìn UNOP 18(1): 17-21 https://boletinunop.weebly.com/uploads/6/2/2/6/62265985/aptenodytespatagonicus.pdf

Vilchez-Delgado, F., Cárdenas-Alayza, S., Diaz, S., Márquez-Alvis, S., Gúzman, F., Pereda-Sanchez, A., ... & Calvo-Mac, C. (2023). South American Fur Seals (Arctocephalus australis) Out of Range in Northern Peru. Aquatic Mammals, 49(5), 468-474. https://doi.org/10.1578/AM.49.5.2023.468​

Lopes, F., Oliveira, L. R.,, Beux, Y., Kessler, A., Cárdenas-Alayza, S. ... Bonatto, S. (2023) Genomic evidence for homoploid hybrid speciation in a marine mammal apex predator. Science Advances. 9(18), eadf6601. https://doi.org/10.1126/sciadv.adf6601

Santillán, L., Pacheco, A. S., Martinez, J. N., Fupuy, J., Barboza, R., Cárdenas-Alayza, S., ... & Ramírez, P. (2023). Distribución de delfín común (Delphinus spp.) de hocico corto y hocico largo en base al índice rostral a lo largo de la costa Perú y Chile. Mastozoologia Neotropical, 30(1), e0908. https://doi.org/10.31687/saremMN.23.30.1.07.e0908

Wright, S., Adkesson, M.J., Schnelle, A.M., Allender, M.C. Cárdenas-Alayza, S. (2023) Agreement between total leukocyte count methodologies in South American sea lions (Otaria byronia) and Peruvian fur seals (Arctocephalus australis). Journal of Wildlife Diseases 59(2): 315-321. https://doi.org/10.7589/JWD-D-22-00001

Ayala, F, Zeta-Flores, M, Ramos-Baldárrago, S, Tume-Ruiz, J, Rangel-Vega, A, Reyes, E, ... Cárdenas-Alayza S. (2023) Terrestrial mammals of the Americas and their interaction with plastic waste. Environmental Science and Pollution Research. https://doi.org/10.1007/s11356-023-26617-x

Angles, R, Adkesson, MJ, Cárdenas-Alayza S,  Adamovicz, L, Allender, MC. (2023) Detection and prevalence of Spheniscid Alpha-Herpesvirus-1 (SpAHV-1) in a sample of  Humboldt penguins (Spheniscus humboldti) at Punta San Juan, Peru. Journal of Zoo and Wildlife Medicine. 54(1): 159-163 https://doi.org/10.1638/2022-0105

Ayala, F, Vizcarra, JK, Castillo-Morales, K, Torres-Zevallos, U, Cordero-Maldonado,C, Ampuero-Merino, L, ... Cárdenas-Alayza, S. (2023) From social networks to bird enthusiasts: reporting interactions between plastic waste and birds in Peru. Environmental Conservation 1-6. https://doi.org/10.1017/S037689292300005

Doig-Alba, L, Bussalleu, A, Cárdenas-Alayza S,  Cardeña-Mormontoy, M, Valdés-Velásquez, A. (2023) Have we achieved a sustainable balance? Evaluating the effects of regulated guano extraction on an important penguin breeding colony (2008–2019). Global Ecology and Conservation 41(2023) e02351 https://doi.org/10.1016/j.gecco.2022.e02351

Cárdenas-Alayza S, Adkesson, M.J., Gutiérrez, D, Demarcq, H, Tremblay, Y. (2022) Strategies for segregation during foraging in sympatric otariids of the Peruvian upwelling Humboldt Current System. Marine Ecology Progress Series 702:153-170. https://doi.org/10.3354/meps14203

Favarini, M. O., Simão, T. L., Macedo, G. S., Garcez, F. S., Oliveira, L. R., Cárdenas-Alayza, S., ... & Eizirik, E. (2022). Complex evolutionary history of the South American fox genus Lycalopex (Mammalia, Carnivora, Canidae) inferred from multiple mitochondrial and nuclear markers. Diversity, 14(8), 642. https://doi.org/10.3390/d14080642

Cárdenas-Alayza S, Adkesson, M.J., Edwards, M.R., Hirons, A.C., Gutiérrez D, Tremblay Y, Franco-Trecu,V. (2022) Sympatric otariids increase trophic segregation in response to warming ocean conditions in Peruvian Humboldt Current System. PLoS ONE 17(8): e0272348. https://doi.org/10.1371/journal.pone.0272348

Cárdenas-Alayza S, Torres, D.A., Gutiérrez D, Tremblay Y.(2022)  Resource partitioning as a mechanism for trophic segregation in sympatric otariids from the productive upwelling Peruvian Humboldt Current System. Austral Ecology 0: 1-16.https://doi.org/10.1111/aec.13158

Ayala, F., Lajo-Salazar, L. & Cárdenas-Alayza, S. (2022) White-naped squirrels use plastic waste for nest construction in agricultural areas of northern Peru, International Journal of Environmental Studies, 79:4, 724-730, 10.1080/00207233.2021.1950363

Ayala, F., Castillo-Morales, K., & Cárdenas-Alayza, S. (2022). Impact of marine debris recorded in a sympatric colony of otariids in the south coast of Peru. Marine Pollution Bulletin, 174, 113281. https://doi.org/10.1016/j.marpolbul.2021.113281

Kane, L.P., Adkesson, M.J.,  Sheldon, J.D.,  Allender, M.C.,  Jankowski, G., Cárdenas-Alayza, S. (2021) Measurement of intraocular pressure using rebound tonometry in anesthetized Peruvian fur seals (Arctocephalus australis) from Punta San Juan, Peru. Journal of Zoo and Wildlife Medicine 52(4), 1217-1223. https://doi.org/10.1638/2020-0222

Edwards, M.R., Cárdenas-Alayza S, Adkesson, M.J., Daniels-Adulahad, M, Hirons, A.C. (2021) Peruvian fur seals as Archivists of El Niño Southern Oscillation Effects. Frontiers in Marine Science 8:1657 https://doi.org/10.3389/fmars.2021.651212

Watson, M.K, Langan, J.N.,  Allender, M.C., Cardeña, M. Cárdenas-Alayza, S., Adkesson, M.J. (2021) Health assessment of guanay cormorant (Phalacrocorax bougainvillii) and Peruvian pelican (Pelecanus thagus) populations at Punta San Juan, Peru, Journal of Zoo and Wildlife Medicine 52(3), 975-985, https://doi.org/10.1638/2019-0119.1

Cortes-Hinojosa, G., Adkesson, M.J., Cárdenas-Alayza, S., Seguel, M., Pavés, H., Wellehan, J.F.S. (2021) Adenovirus Diversity in Fur seal and Penguin colonies of South America. Journal of Wildlife Diseases 57 (4): 964–969 https://doi.org/10.7589/JWD-D-20-00118

Loaiza Alamo, I.,De Boeck, G., Alcazar, J., Campos, D., Cárdenas-Alayza, S., Ganoza Gallardo, M.J., Gómez-Sanchez, M., Miglio, M., DeTroch, M. (2021). Trophic interactions and metal transfer in marine ecosystems driven by the Peruvian scallop Argopecten purpuratus aquaculture. Journal of the World Aquaculture Society. https://doi.org/10.1111/jwas.12822

Cárdenas-Alayza, S., Gutiérrez, D., Tremblay, Y. (2021). Trends in sympatric pinniped populations suggest resource limitations in the Peruvian Humboldt Current System. Marine Environmental Research 169:105349 https://doi.org/10.1016/j.marenvres.2021.105349

Ayala, F., Cardeña, M.A., Cárdenas-Alayza, S. Registros de Microplásticos en Fecas del León Marino Sudamericano (Otaria byronia Blainville, 1820) colectadas en la Reserva Nacional Punta San Juan.(2021). Revista Internacional de Contaminación Ambiental 37, 273-279. https://doi.org/10.20937/RICA.53745

Lopes, F., Oliveira, L. R., Kessler, A., Crespo, E., Cárdenas-Alayza, S., Majluf, P., ... & Bonatto, S. L. (2021). Gene-tree Species-tree Discordance in the Eared Seals is best explained by Incomplete Lineage Sorting following Explosive Radiation in the Southern Hemisphere.Systematic Biology,70(4):786-802 https://doi.org/10.1093/sysbio/syaa099

Perez-Venegas, D. J., Toro-Valdivieso, C., Ayala, F., Brito, B., Iturra, L., Arriagada, M., ... & Cárdenas-Alayza, S.(2020). Monitoring the occurrence of microplastic ingestion in Otariids along the Peruvian and Chilean coasts. Marine Pollution Bulletin, 153, 110966. https://doi.org/10.1016/j.marpolbul.2020.110966

Colchao, P., Adkesson, M. J., Allender, M. C., Fascetti, A. J., Cardeña, M., Cárdenas‐Alayza, S., ... & Deem, S. (2020). Circulating nutrient concentrations in free‐ranging Humboldt penguins (Spheniscus humboldti) in Punta San Juan, Peru. Zoo Biology. https://doi.org/10.1002/zoo.21540

Chiu-Werner, A., Ceia, F.R., Cárdenas-Alayza, S., Cardeña-Mormontoy, M., Adkesson, M.J., Xavier, J. (2019) Inter-annual isotopic niche segregation of wild Humboldt penguins through years of different El Niño intensities. Marine Environmental Research: 150(2019):104755. https://doi.org/10.1016/j.marenvres.2019.104755

Sheldon, J.D., Adkesson, M.J., Allender, M.C., Jankowski, G., Cárdenas-Alayza, S. (2019). Measurement of Intraocular Pressure Using Rebound Tonometry in Anesthetized Free-ranging South American Sea Lions (Otaria byronia). Journal of Wildlife Diseases: 55(4): 885-888. https://doi.org/10.7589/2018-08-207

Adkesson, M. J., Levengood, J. M., Scott, J. W., Schaeffer, D. J., Panno, B., Langan, J. N., Cárdenas-Alayza S., De la Puente, S., Majluf, P. & James-Yi, S. (2019). Analysis of Toxic and Essential Elements in the Blood and Feathers of Humboldt Penguins (Spheniscus humboldti) at Punta San Juan, Peru. Journal of Wildlife Diseases: 55 (2): 438-443. https://doi.org/10.7589/2018-03-081

Seguel M., Calderón - Mayo KI., Colegrove K., Adkesson M.J, Cárdenas-Alayza S. & Paredes E. (2018). Helminth and respiratory mite lesions in Pinnipeds from Punta San Juan, Peru. Acta Parasitologica 63(4). https://doi.org/10.1515/ap-2018-0103

Adkesson, M.J., Levengood, J.M., Scott, J.M., Schaeffer, D.J., Panno, B., Langan, J.N., Cárdenas-Alayza, S., De la Puente, S., Majluf, P., Yi, S. (2018). Assessment of polychlorinated biphenyls, organochlorine pesticides, and polybrominated diphenyl ethers in the blood of Humboldt penguins (Spheniscus humboldti) from the Punta San Juan marine protected area, Peru. Journal of Wildlife Diseases 54(2), 2018. https://doi.org/10.7589/2016-12-270

Ampuero Merino, L.P., Ayala Tores, F., Cárdenas-Alayza, S. (2017). Primer registro documentado de la Dormilona de Vientre Canela (Muscisaxicola capistratus) para la costa peruana durante su migración austral. Boletín Informativo de la Unión de Ornitólogos del Perú (UNOP).Vol 12 (1): 11-14. https://boletinunop.weebly.com/uploads/6/2/2/6/62265985/boletin_unop_vol._12_n°1_2017_-_ampuero.pdf

Oliveira, L. R.d, Gehara, M. C., Fraga, L. D., Lopes, F., Túnez, J. I., Cassini, M. H., Majluf,P., Cárdenas-Alayza, S. […], & García, N. (2017). Ancient female philopatry, asymmetric male gene flow, and synchronous population expansion support the influence of climatic oscillations on the evolution of South American sea lion (Otaria flavescens). PloS one, 12(6), e0179442. https://doi.org/10.1371/journal.pone.0179442

Sheldon, J. D., Adkesson, M. J., Allender, M. C., Jankowski, G., Langan, J., Cardeña, M., & Cárdenas-Alayza, S. (2016). Determination of Tear Production and Intraocular Pressure with Rebound Tonometry in Wild Humboldt Penguins (Spheniscus humboldti). Journal of Avian Medicine and Surgery, 31(1), 16-23. https://doi.org/10.1647/2015-134

Fire, S. E., Adkesson, M. J., Wang, Z., Jankowski, G., Cárdenas‐Alayza, S., & Broadwater, M. (2016). Peruvian fur seals (Arctocephalus australis ssp.) and South American sea lions (Otaria byronia) in Peru are exposed to the harmful algal toxins domoic acid and okadaic acid. Marine Mammal Science,33 (2). https://doi.org/10.1111/mms.12371

Jankowski, G., Adkesson, M. J., Saliki, J. T., Cárdenas-Alayza, S., & Majluf, P. (2015). Survey for infectious disease in the South American fur seal (Arctocephalus australis) population at Punta San Juan, Peru. Journal of Zoo and Wildlife Medicine, 46(2), 246- 254. https://doi.org/10.1638/2014-0120.1

Cárdenas-Alayza, S., Cardeña-Mormontoy, M.A. (2012). The Punta San Juan Project- Protecting One of the World ́s Largest Colonies of Humboldt Penguins. Penguin Conservation 16 (2):10-15.

https://www.researchgate.net/publication/319077071_The_Punta_San_Juan_Project-Protecting_One_of_the_World's_Largest_Colonies_of_Humboldt_Penguins

Cossíos, D., Alcázar-García, P., Fajardo-Quispe, U., Chávez, K., Alfaro-Shiguieto, J., Cárdenas-Alayza, S., [...], Ruiz, E. (2012). El orden Carnivora (Mammalia) en el Perú: Estado del conocimiento y prioridades de investigación para su conservación. Revista Peruana de Biología 19 (1): 17-26. http://www.scielo.org.pe/scielo.php?pid=S1727-99332012000100003&script=sci_arttext&tlng=en

Oliveira, L. R. de, Loizaga De Castro, R., Cárdenas-Alayza, S., & Bonatto, S. L. (2012). Conservation genetics of South American aquatic mammals: an overview of gene diversity, population structure, phylogeography, non‐ invasive methods and forensics. Mammal Review, 42(4), 275-303. https://doi.org/10.1111/j.1365-2907.2011.00201.x

Chiu Werner, A., Cárdenas-Alayza, S., Cardeña Mormontoy, M., Bussalleu Cavero, A., Guerrero Bustamante, P., Sandoval García, F. & Y. Tremblay. (2011). La ruta del pingüino: Uso de hábitat marino y patrón de atención al nido por el Pingüino de Humboldt (Spheniscus humboldti) en Punta San Juan, Perú. Boletín Informativo de la Unión de Ornitólogos del Perú (UNOP) 6 (2): 21-27. https://www.guzlop-editoras.com/web_des/bio01/zoo/pld0706.pdf