Is the invasive pond slider (<em>Trachemys scripta</em>) favoured by a longer activity period than the native Mediterranean pond turtle (<em>Mauremys leprosa</em>)?
DOI:
https://doi.org/10.11160/bah.322Keywords:
annual cycle, exotic terrapin, Llobregat Delta, Mauremys, phenology, TrachemysAbstract
The annual activity patterns of the non-native pond slider (Trachemys scripta) and the native Mediterranean pond turtle (Mauremys leprosa) were assessed through transect surveys conducted in two irrigation channels in the Llobregat Delta (Barcelona, Spain), between July 2011 and May 2014. Individuals of T. scripta were categorised into four size classes (neonates, juveniles, subadults, and adults), whereas M. leprosa was treated as a single class including subadults and adults, as only two neonates and three juveniles were recorded. A total of 62 valid transects yielded 2525 T. scripta and 119 M. leprosa encounters. Activity of T. scripta began earlier in the season, with smaller individuals appearing in March and adults becoming more prominent approximately one month later, remaining active until October–November. A reduction in activity was noted during summer, particularly among adults and, to a lesser extent, subadults. Adult T. scripta ceased activity earlier than subadults and juveniles, which remained active until November. In contrast, M. leprosa was active from April to September, with reduced activity in October. Neonates of T. scripta were present in aquatic habitats from March to October, occasionally extending into November, with peak abundance in June. The longer annual activity period of T. scripta may confer competitive advantages in resource acquisition during more prolonged warm seasons, potentially contributing to its invasive success in Mediterranean wetland ecosystems. In addition, these results suggest an extended reproductive season with the potential for multiple oviposition events annually.
References
Andreu, A.C.; Hidalgo-Vila, J.; Pérez-Santigosa, N.; Tarragó, A.; Díaz-Paniagua, C. & Marco, A. (2003). Invasores e invadidos: diferencias en tasas de crecimiento y estrategias reproductivas, In L. Capdevila-Argüelles, B. Zilletti & N. Pérez Hidalgo (coords.). Contribuciones al conocimiento de las Especies Exóticas Invasoras. Series: G.E.I. Serie Técnica, vol. 1. Grupo Especies Invasoras Ed., León, Spain, pp. 136-139.
Barquero, J.A. (2001). El control del comercio y las especies potencialmente invasoras: situación actual de la tortuga de Florida (Trachemys scripta elegans) en España. M.Sc. Thesis, Universidad Internacional de Andalucía, Sevilla, Spain.
Bertolero, A. & Canicio, A. (2000). Nueva cita de nidificación en libertad de Trachemys scripta elegans en Cataluña. Boletín de la Asociación Herpetológica Española 11: 84.
Cadi, A. & Joly, P. (2003). Competition for basking places between the endangered European pond turtle (Emys orbicularis galloitalica) and the introduced red-eared slider (Trachemys scripta elegans). Canadian Journal of Zoology 81: 1392–1398. https://doi.org/10.1139/z03-108.
Capalleras, X. & Carretero, M.A. (2000). Evidencia de reproducción con éxito en libertad de Trachemys scripta en la Península Ibérica. Boletín de la Asociación Herpetológica Española 11: 34-36.
Catálogo Español De Especies Introducidas (2013). Real Decreto 630/2013. Ministerio para la Transición Ecológica y el Reto Demográfico, Madrid, Spain. Available at https://www.miteco.gob.es/content/dam/miteco/es/biodiversidad/temas/conservacion-de-especies/trachemys_scripta_2013_tcm30-69939.pdf.
Chen, T.H. & Lue, K.Y. (1998). Ecological notes on feral populations of Trachemys scripta elegans in Northern Taiwan. Chelonian Conservation and Biology 3: 87-90. https://doi.org/10.2744/CCB-0713.1
Costanzo, J.P.; Lee Jr., R.E. & Ultsch, G.R. (2008). Physiological ecology of overwintering in hatchling turtles. Journal of Experimental Zoology Part A: Ecological Genetics and Physiology 309A: 297–379. https://doi.org/10.1002/jez.460
De Roa, E. & Roig, J.M. (1998). Puesta en hábitat natural de la tortuga de Florida (Trachemys scripta elegans) en España. Boletín de la Asociación Herpetológica Española 9: 48-50.
Díaz-Paniagua, C.; Pérez-Santigosa, N.; Hidalgo-Vila, J. & Portheault, A. (2005). Bases científicas para la elaboración de un programa de erradicación de galápagos exóticos introducidos en el medio natural. Unpublished report, Consejería de Medio Ambiente, Junta de Andalucía–CSIC, Sevilla, Spain.
Escoriza, D. & Pascual, G. (2021). Habitat Occupancy by Semi‐aquatic Reptiles on an Aridity Gradient in the Western Mediterranean. River Research and Applications 37: 1233–1242. https://doi.org/10.1002/rra.3838
Ficetola, G.F.; Thuiller, W. & Padoa‐Schioppa, E. (2009). From introduction to the establishment of alien species: bioclimatic differences between presence and reproduction localities in the slider turtle. Diversity and Distributions 15: 108–116. https://doi.org/10.1111/j.1472-4642.2008.00516.x
Filella, E.; Rivera, X.; Arribas, O. & Melero, J.A. (1999). Estatus i dispersió de Trachemys scripta elegans a Catalunya (Nord-est de la Península Ibèrica). Butlletí de la Societat Catalana d’Herpetologia 14: 30-36.
Franch, M.; Llorente, G.A. & Montori, A. (2006a). Ecología reproductiva de Trachemys scripta elegans en el NE Ibérico, In IX Congreso Luso-Español and XIII Congreso Español de Herpetología: Book of Abstracts. San Sebastián, Spain, p. 58.
Franch, M.; Llorente, G.A. & Montori, A. (2006b). Estructura de la población de Mauremys leprosa y Trachemys scripta elegans en sintopía del noreste de la Península Ibérica: efectos de la gestión de especies, In IX Congreso Luso-Español and XIII Congreso Español de Herpetología: Book of Abstracts. San Sebastián, Spain, p. 157.
Franch, M.; Llorente, G.A. & Montori, A. (2007). Primeros datos sobre la biología de Trachemys scripta elegans en sintopía con Mauremys leprosa en el Delta del Llobregat (NE Ibérico), In GEIB (eds.) Invasiones Biológicas: Un Factor Del Cambio Global. Series: G.E.I Serie Técnica (Grupo Especialista en Invasiones Biológicas, eds.), vol. 3. GEIB, León, Spain, pp. 85-101.
Franch, M.; Llorente, G.A. & Montori, A. (2012). Evolución del índice de masa corporal durante el periodo anual de actividad de los galápagos acuáticos continentales en el nordeste de la Península Ibérica, In XII Congreso Luso-Español and XVI Congreso Español de Herpetología: Book of Abstracts. Murcia, Spain, p. 94.
Franch, M.; Llorente, G.A.; Rieradevall, M.; Montori, A. & Cañedo-Argüelles, M. (2022). Coexistence of Native and Invasive Freshwater Turtles: The Llobregat Delta (NE Iberian Peninsula) as a Case Study. Land 11: 1582.
Franch, M.; Montori, A.; Sillero, N. & Llorente, G.A. (2015). Temporal analysis of Mauremys leprosa (Testudines, Geoemydidae) distribution in northeastern Iberia: unusual increase in the distribution of a native species. Hydrobiologia 757: 129–142.
Fritz, U.; Kehlmaier, C.; Scott, R.J.; Fournier, R.; Mccranie, J.R. & Gallego-García, N. (2023). Central American Trachemys revisited: New sampling questions current understanding of taxonomy and distribution (Testudines: Emydidae). Vertebrate Zoology 73: 513–523. https://doi.org/10.3897/vz.73.e104438
Fritz, U.; Herrmann, H.W.; Rosen, P.C.; Auer, M.; Vargas-Ramírez, M. & Kehlmaier, C. (2024). Trachemys in Mexico and beyond: beautiful turtles, taxonomic nightmare, and a mitochondrial poltergeist (Testudines: Emydidae). Vertebrate Zoology 74: 435-452. https://doi.org/10.3897/vz.74.e125958
Garbett, L.G. (1926). Admiral Sir Francis Beaufort and the Beaufort Scales of wind and weather. Quarterly Journal of the Royal Meteorological Society 52: 161-172.
García-Díaz, P.; Ramsey, D.S.L.; Woolnough, A.P.; Franch, M.; Llorente, G.A.; Montori, A.; Buenetxea, X.; Larrinaga, A.R.; Lasceve, M.; Álvarez, A.; Traverso, J.M.; Valdeón, A.; Crespo, A.; Rada, V.; Ayllón, E.; Sancho, V.; Lacomba, J.I.; Bataller, J.V. & Lizana, M. (2017). Challenges in confirming eradication success of invasive red-eared sliders. Biological Invasions 19: 2739-2750.
García-Salmerón, A.; Carbonell, G.; Torres-Orriols, N.; Martínez-Silvestre, A.; Baena, O.; Mota-Rueda, C.; Loras-Orti, F.; Valera, J.; Rivera, X. & Maluquer-Margalef, J. (2024). Guia dels Rèptils de Catalunya. Cossetània Edicions, Barcelona, Spain.
Geniez, P.H. & Cheylan, M. (1987). Atlas de distribution des Reptiles et Amphibiens du Languedoc-Roussillon. Laboratoire de Biogéographie et Ecologie des Vertébrés, Montpellier, France.
Gibbons, J.W. (1990) The slider turtle, In J.W. Gibbons (ed.) Life history and ecology of the Slider Turtle. Smith. Inst. Press, Washington, USA, pp. 3-18.
Jackson, D.C. & Ultsch, G.R. (2010). Physiology of hibernation under the ice by turtles and frogs. Journal of Experimental Zoology Part A: Ecological Genetics and Physiology 313A: 311–327.
Lambert, M.R.; Mckenzie, J.M.; Screen, R.M.; Clause, A.G.; Johnson, B.J.; Mount, G.G.; Shaffer, H.B. & Pauly, G.B. (2019). Experimental removal of introduced slider turtles offers new insight into competition with a native, threatened turtle. PeerJ 7: e7444.
Lowe, S.; Browne, M.; Boudjelas, S. & De Poorter, M. (2004). 100 of the world’s worst invasive alien species: a selection from the Global Invasive Species Database. The Invasive Species Specialist Group (ISSG), GEEI-UICN, Auckland, New Zealand.
Luiselli, L.; Capula, M.; Capizzi, D.; Filippi, E.; Trujillo, J.V. & Anibaldi, C. (1997). Problems for conservation of pond turtles (Emys orbicularis) in central Italy: is the introduced red-eared turtle (Trachemys scripta) a serious threat? Chelonian Conservation and Biology 2: 417-419.
Martínez-Silvestre, A.; Hidalgo-Vila, J.; Pérez-Santigosa, N. & Díaz-Paniagua, C. (2015). Galápago de Florida – Trachemys scripta, In A. Salvador & A. Marco (eds.). Enciclopedia Virtual de los Vertebrados Españoles. Museo Nacional de Ciencias Naturales, Madrid, Spain. Available at http://www.vertebradosibericos.org/reptiles
Martínez-Silvestre, A.; Soler, J.; Gorriz, A.; Munne, P. & De Roa, E. (2006). Trachemys scripta elegans and other invasive species of chelonians in Catalonia (North-eastern Iberian Peninsula). Chelonii 4: 53-54.
Martínez-Silvestre, A.; Soler, J. & Medina, D. (2001). La tortuga de Florida (Trachemys scripta elegans): Situación en el pantano de Foix (Tarragona). Unpublished report, AHE, Barcelona, Spain.
Montori, A.; Amat, F.; Carranza, S.; Cirer-Costa, A.M.; Fernández-Guiberteau, D.; Franch, M.; Kaliontzopoulou, A.; Pérez i de Lanuza, G.; Pujol-Buxó, E. & Santos, X. (2023). Els rèptils dels Països Catalans. Brau Edicions, Figueres, Spain.
Nichols, H.; Carter, A.; Paitz, R. & Bowden, R. (2019). Red‐eared slider hatchlings (Trachemys scripta) show a seasonal shift in behavioral types. Journal of Experimental Zoology Part A: Ecological and Integrative Physiology 331A: 485-493.
Pérez-Santigosa, N. (2007). Ecología del galápago exótico, Trachemys scripta elegans, en la península Ibérica. Efectos sobre las poblaciones de Mauremys leprosa y Emys orbicularis. Ph.D. Dissertation, Universidad de Sevilla, Sevilla, Spain.
Pérez-Santigosa, N.; Díaz-Paniagua, C. & Hidalgo-Vila, J. (2008a). Actividad y uso del espacio de Trachemys scripta elegans frente a Mauremys leprosa y Emys orbicularis, In X Congreso Luso-Español and XIV Congreso Español de Herpetología: Book of Abstracts. Coimbra, Portugal, p. 94.
Pérez-Santigosa, N.; Díaz-Paniagua, C. & Hidalgo-Vila, J. (2008b). The reproductive ecology of exotic Trachemys scripta elegans in an invaded area of southern Spain. Aquatic Conservation: Marine and Freshwater Ecosystems 18: 1302-1310.
Pérez-Santigosa, N.; Díaz-Paniagua, C.; Hidalgo-Vila, J.; Marco, A.; Andreu, A. & Portheault, A. (2006). Características de dos poblaciones reproductoras del Galápago de Florida, Trachemys scripta elegans, en el suroeste de España. Revista Española de Herpetología 20: 5-16.
Pérez-Santigosa, N.; Florencio, M.; Hidalgo-Vila, J. & Díaz-Paniagua, C. (2011). Does the exotic invader turtle, Trachemys scripta elegans, compete for food with coexisting native turtles? Amphibia-Reptilia 32(2): 167-175. https://doi.org/10.1163/017353710X552795
Pérez-Santigosa, N.; Hidalgo-Vila, J. & Díaz‐Paniagua, C. (2013). Comparing activity patterns and aquatic home range areas among exotic and native turtles in southern Spain. Chelonian Conservation and Biology 12: 313-319.
Pleguezuelos, J.M. (2002). Las especies introducidas de anfibios y reptiles, In J.M. Pleguezuelos, R. Márquez, M. Lizana (eds.) Atlas y Libro Rojo de los Anfibios y Reptiles de España. Dirección General de la Conservación de la Naturaleza–AHE. Madrid, Spain, pp. 501-532.
Polo-Cavia, N.; López, P. & Martín, J. (2010). Competitive interactions during basking between native and invasive freshwater turtle species. Biological Invasions 12: 2141–2152.
Prévot-Julliard, A.C.; Gousset, E.; Archinard, C.; Cadi, A. & Girondot, M. (2007). Pets and invasion risks: is the slider turtle strictly carnivorous? Amphibia-Reptilia 28: 139–143.
Ramos, S.; Franch, M.; Llorente, G.A. & Montori, A. (2009). Morphometry and biological cycle of a European pond turtle (Emys orbicularis) population from north-eastern Spain. Revista Española de Herpetologia 23: 117–128.
Spotila, J.R.; Foley, R.E. & Standora, E.A. (1990). Thermoregulation and climate space of the slider turtle, In J.W. Gibbons (ed.). Life History and Ecology of the Slider Turtle. Smithsonian Institution Press, Washington, USA, pp. 288-298.
Tiedemann, F. (ed.) (1990). Lurche und Kriechtiere wiens. J. and V.; Wien, Austria.
Tietz, B.; Penner, J. & Vamberger, M. (2023). Chelonian Challenge: Three Alien Species From North America Are Moving Their Reproductive Boundaries in Central Europe. Neobiota 82: 1–21.
Tucker, J.K. (2001). Clutch frequency in the red-eared slider (Trachemys scripta elegans). Journal of Herpetology 35: 664–668.
Willette, D.; Tucker, J. & Janzen, F. (2005). Linking climate and physiology at the population level for a key life-history stage of turtles. Canadian Journal of Zoology 83(6), 845-850.
Zugadi, I. & Buenetxea, X. (2004). “Trampa Bolue”: presentación de un nuevo modelo de trampa para la captura y observación de galápagos acuáticos en balsas de agua, In: VIII Congreso Luso-Español and XII Congreso Español de Herpetología: Book of Abstracts. Málaga, Spain, pp. 129-130.
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