Universitat de Girona
Universitat de Girona. Facultat de Ciències
Franch Quintana, Marc
2025-06
This study investigates the reproductive biology of the invasive species Trachemys scripta in the Baix Ter, a Mediterranean region characterized by strong seasonal variation. A total of 92 adult females were captured and examined, yielding detailed biometric data, ovarian activity profiles, oocyte number and maturity, and morphological features of the oviductal eggs. Results reveal high intraindividual variability in reproductive parameters, indicating remarkable reproductive plasticity. Although a positive correlation was observed between body size and oocyte count, it is not sufficiently strong to be considered definitive. Two reproductive phenotypes were identified, based on body size and reproductive performance. Ovarian maturation was clearly linked to seasonal temperature changes, with a decrease in mature oocytes as the reproductive season progressed. Together, these findings underscore the adaptive reproductive capacity of T. scripta, which likely contributes to its success as an invasive species
15
Project / Final year job or degree
Catalan
Trachemys scripta -- Reproducció -- Catalunya -- Parc Natural del Montgrí, les Illes Medes i el Baix Ter; Emys orbicularis -- Protecció -- Catalunya -- Parc Natural del Montgrí, les Illes Medes i el Baix Ter; Animals invasors -- Catalunya -- Parc Natural del Montgrí, les Illes Medes i el Baix Ter; Trachemys scripta -- Reproduction -- Catalunya -- Parc Natural del Montgrí, les Illes Medes i el Baix Ter; Emys orbicularis -- Conservation -- Catalonia -- Parc Natural del Montgrí, les Illes Medes i el Baix Ter; Animals invasors -- Catalunya -- Parc Natural del Montgrí, les Illes Medes i el Baix Ter; Introduced organisms -- Catalonia -- Parc Natural del Montgrí, les Illes Medes i el Baix Ter
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
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