RT info:eu-repo/semantics/article
T1 Larval Development in Tropical Gar (Atractosteus tropicus) Is Dependent on the Embryonic Thermal Regime: Ecological Implications under a Climate Change Context
A1 Cordova de la Cruz, Simrith E.
A1 Fernández Riesco, Marta
A1 Martínez Bautista, Gil
A1 Calzada Ruíz, Daniel
A1 Martínez Burguete, Talhia
A1 Peña Marín, Emyr Saul
A1 Alvarez González, Carlos Alfonso
A1 Fernández Monzón, Ignacio Valentín
A2 Biologia Celular
K1 Biología
K1 Ecología. Medio ambiente
K1 Temperature
K1 Skeletal development
K1 Ossification
K1 Morphological alterations
K1 2407 Biología Celular
K1 2401.07 Embriología Animal
K1 3104.11 Reproducción
K1 3105.09 Influencia del Hábitat
AB [EN] In ectotherm species, environmental temperature plays a key role in development, growth, and survival. Thus, determining how temperature affects fish populations is of utmost importance to accurately predict the risk of climate change over fisheries and aquaculture, critical to warrant nutrition and food security in the coming years. Here, the potential effects of abnormal thermal regimes (24, 28 and 32 °C; TR24, TR28, and TR32, respectively) exclusively applied during embryogenesis in tropical gar (Atractosteus tropicus) has been explored to decipher the potential consequences on hatching and growth from fertilization to 16 days post-fertilization (dpf), while effects on skeletal development and body morphology were explored at fertilization and 16 dpf. Egg incubation at higher temperatures induced an early hatching and mouth opening. A higher hatching rate was obtained in eggs incubated at 28 °C when compared to those at 24 °C. No differences were found in fish survival at 16 dpf, with values ranging from 84.89 to 88.86%, but increased wet body weight and standard length were found in larvae from TR24 and TR32 groups. Thermal regime during embryogenesis also altered the rate at which the skeletal development occurs. Larvae from the TR32 group showed an advanced skeletal development, with a higher development of cartilaginous structures at hatching but reduced at 16 dpf when compared with the TR24 and TR28 groups. Furthermore, this advanced skeletal development seemed to determine the fish body morphology. Based on biometric measures, a principal component analysis showed how along development, larvae from each thermal regime were clustered together, but with each population remaining clearly separated from each other. The current study shows how changes in temperature may induce craniofacial and morphological alterations in fish during early stages and contribute to understanding the possible effects of global warming in early development of fish and its ecological implications
PB MDPI
LK https://hdl.handle.net/10612/19889
UL https://hdl.handle.net/10612/19889
NO Cordova-de la Cruz, S. E., Riesco, M. F., Martínez-Bautista, G., Calzada-Ruiz, D., Martínez-Burguete, T., Peña-Marín, E. S., Álvarez-Gonzalez, C. A., and Fernández, I. (2022). Larval development in tropical gar (Atractosteus tropicus) is dependent on the embryonic thermal regime: ecological implications under a climate change context. Fishes, 7(1), Article e16. https://doi.org/10.3390/fishes7010016
NO This article belongs to the Special Issue Current Advances and Challenges in Fisheries and Aquaculture Science: Feature Papers for the New Journey of Fishes
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 21-may-2024