Effects of habitat-related visibility on escape decisions of the Spanish Terrapin Mauremys leprosa

Martı́n, José; Marcos, Iván; López, Pílar

doi:10.1163/156853805774806250

Cited by 19 publications

(2 citation statements)

References 17 publications

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“…Estos resultados podrían indicar una asociación negativa entre P. hilarii y el sobrecrecimiento de algas, aunque es necesario realizar más estudios al respecto. La cobertura intermedia de vegetación acuática le ofrecería a P. hilarii una plataforma natural donde asolearse, al igual que una vía de escape y zona de refugio ante potenciales depredadores (Engel 1990;Lin et al 2015;Ercolano 2018) sin restringir su movilidad, como sí lo haría un área con mayor densidad de vegetación (Black 2000;López et al 2005) y con baja profundidad (Urueña-Aranda 2007). HC ofreció estas condiciones negativas a partir de diciembreenero hasta mayo, cuando se observó un leve aumento de la superficie correspondiente al agua abierta que volvió a disminuir en junio.…”

Section: D��unclassified

Tortugas dulceacuícolas de la Reserva Ecológica Ciudad Universitaria-Costanera Norte, Buenos Aires, Argentina

Pan Martínez,

Courtalon

2024

Ecol Austral

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Este trabajo busca corroborar la presencia de tortugas dulceacuícolas en la Reserva Ecológica Ciudad Universitaria-Costanera Norte, evaluar si existen variaciones mensuales en la abundancia relativa de alguna de las especies observadas y estudiar su comportamiento y uso del hábitat. Se realizaron avistajes semanales desde octubre de 2022 a junio de 2023, en cuatro puntos del humedal (HI1, HI2, HI3 y HC), entre 12:00 y las 16:00 h. Las tortugas observadas fueron identificadas y su comportamiento se clasificó en asoleamiento, desplazamiento y alimentación. Las variaciones en la abundancia relativa se analizaron por sitio mediante una prueba de Kruskal-Wallis, utilizando contrastes a posteriori de Benjamini-Hochberg si se encontraban diferencias entre meses. Detectamos la presencia de Phrynops hilarii, Trachemys dorbigni e Hydromedusa tectifera, siendo P. hilarii la única especie abundante y frecuente. No encontramos diferencias en la abundancia relativa de P. hilarii entre meses para HI2 (χ2=13.78; P=0.088) y HI3 (χ2=7.28; P=0.507), pero sí una mayor abundancia relativa en diciembre con respecto a mayo (z=-3.17; P.adj=0.028) y abril (z=-3.17; P.adj=0.028) en HI1, y en octubre en relación con noviembre (z=-2.99; P.adj=0.017), diciembre (z=-2.99; P.adj=0.017), enero (z=-2.99; P.adj=0.017), febrero (z=-2.99; P.adj=0.017), marzo (z=-2.99; P.adj=0.017) y junio (z=-2.99; P.adj=0.017) para HC. Los comportamientos de asoleamiento y desplazamiento se observaron en los cuatro puntos, mientras que la alimentación, solo en HI2 y HI3. Definimos áreas de asoleamiento en HI1 y HIC, asoleamiento y alimentación en HI2 y HI3, y tránsito en HI1, HI2 y HI3. Proponemos medidas de manejo para garantizar la conservación de las tortugas en la reserva.

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Section: D��unclassified

Tortugas dulceacuícolas de la Reserva Ecológica Ciudad Universitaria-Costanera Norte, Buenos Aires, Argentina

Pan Martínez,

Courtalon

2024

Ecol Austral

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“…If in the water, copulation usually occurs on the surface, but mated pairs sometimes descend to the bottom where they may remain immobile (Lortet 1887). Extremely wary while basking, when a human approaches from up to 80 m, depending upon level of visibility for observer and turtle (López et al 2005), M. leprosa generally scrambles or drops into the water or, on occasion, leaves the water to hide under rocks or in dense vegetation (Maran 1996). Under experimental conditions the length of time a male with bright limb coloration remains withdrawn into its shell is longer than that of a less brightly colored male; females, however, do not appear to exhibit this differential behavior (Ibáñez et al 2014).…”

Section: 7mentioning

confidence: 99%

Mauremys leprosa (Schoepff in Schweigger 1812) – Mediterranean Pond Turtle, Spanish Terrapin, Mediterranean Stripe-necked Terrapin

Bertolero¹,

Busack²

2017

Chelonian Research Monographs

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The Mediterranean Pond Turtle, Mauremys leprosa (Family Geoemydidae) is a small to medium-sized freshwater turtle (carapace length up to ca. 210 mm in males, 240 mm in females), widely distributed in North Africa and across the Strait of Gibraltar to the Iberian Peninsula and southern France. Our current understanding of the species' evolutionary history involves complex patterns of population origination, dispersion, extinction, evolution into two major lineages (each with three sublineages), and human-assisted transport. Populations in North Africa are often isolated from one another by intervening arid terrain, and a complex pattern of local variation in shell markings has occurred. Mauremys leprosa tolerates salt water, and has a high tolerance for polluted freshwater habitats, reduced water levels, and elevated ambient temperatures; carnivorous by preference, it will also feed freely upon vegetation and has been reported ingesting nitrogenous animal and human waste. Nesting occurs once annually in most populations, with mean clutch size ranging from 3.8 to 9.6 eggs, depending on the population, with the incubation period also variable, from 55-108 days in Europe to 25-30 days in Africa, the shorter period there perhaps as a response to irregular and brief pluvial periods under very arid conditions.diStribution.

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Competitive interactions during basking between native and invasive freshwater turtle species

2009

Self Cite

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The red-eared slider (Trachemys scripta elegans) is currently introduced in many Mediterranean countries, where it behaves as an invasive species that competes and displaces native populations of the endangered Spanish terrapin (Mauremys leprosa). However, the nature of competitive interactions is relatively unknown. During basking activity, factors like greater body size or pre-existing behavioral adaptations to an original habitat with higher levels of interspecific competition might confer competitive advantages to introduced T. scripta with respect to native terrapins. We hypothesized that competition for basking places with the introduced T. scripta might negatively affect the efficiency of basking and thermoregulation of the native Spanish terrapin. We experimentally analyzed the basking activity of T. scripta and M. leprosa under occasional and long-term situations of intra-and inter-specific competition. Native M. leprosa subjected to interspecific competition reduced their basking activity, basked for shorter periods than T. scripta, and avoided basking stacked with the exotic turtles. These results suggested the displacement from the basking sites of the native terrapin by the introduced T. scripta. The decreased basking activity of native M. leprosa when competing directly for basking places with introduced sliders may lead native terrapins to a loss in the efficiency of physiological functions related to ineffective thermoregulation, such as digestion or locomotor performance, thus favoring the expansion of the invasive species.

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Effects of habitat-related visibility on escape decisions of the Spanish Terrapin Mauremys leprosa

Cited by 19 publications

References 17 publications

Tortugas dulceacuícolas de la Reserva Ecológica Ciudad Universitaria-Costanera Norte, Buenos Aires, Argentina

Tortugas dulceacuícolas de la Reserva Ecológica Ciudad Universitaria-Costanera Norte, Buenos Aires, Argentina

Mauremys leprosa (Schoepff in Schweigger 1812) – Mediterranean Pond Turtle, Spanish Terrapin, Mediterranean Stripe-necked Terrapin

Competitive interactions during basking between native and invasive freshwater turtle species

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