The Neotropical lizard Liolaemus pacha (Juárez Heredia et al. 2013. Zootaxa. 3681: 524–538), prev... more The Neotropical lizard Liolaemus pacha (Juárez Heredia et al. 2013. Zootaxa. 3681: 524–538), previously known as L. quilmes (Etheridge, 1993. Boll. Mus. Reg. Sci. Nat. Torino. 11: 137–199), belongs to the L. darwinii group, and it is one of more than 250 species attributed to this genus (Abdala and Quinteros, 2014. Cuad. Herp. 28(2):55-82). Liolaemus species show a great variety of habitat preferences, reproductive strategies and feeding habits. Liolaemus pacha is found in Northwestern Argentina, at “Los Cardones” (26.6670° S, 65.8180° W, datum: WGS84; elev. = 2725 m), Tucumán province. Halloy et al. (2006, Rev. Esp. Herp. 20:47–56) found that L. pacha was primarily insectivorous, eating mainly ants (Hymenoptera: Formicidae) but also insects from the orders Hemiptera (Heteroptera) and Coleoptera. The authors also reported the presence of plant material in one male although they could not identify it. We filmed individuals of this species with a digital camera (Sony HDR-Cx290) in the...
Presentamos un resumen de investigaciones realizadas en su mayoría durante la última déca-da por ... more Presentamos un resumen de investigaciones realizadas en su mayoría durante la última déca-da por nuestro grupo, sobre comportamiento y ecología de lagartijas del género Liolaemus y Phymaturus de Argentina. Llevamos a cabo estudios sobre su comunicación, territorialidad, elección de pareja, función de la coloración nupcial en hembras, relación entre dieta y estado reproductivo, cuidado parental, y filogenia basada en el comportamiento de inmersión en arena. Describimos brevemente cada uno de estos temas y reportamos los resultados más relevantes. Además del valor intrínseco de este tipo de estudios, ellos pueden proveer información valiosa que puede ser utilizada en la elaboración de estrategias de manejo y conservación de especies animales, particularmente en este grupo de Iguania en el que muchas especies son endémicas y a menudo poco conocidas. ABSTRACT We present a summary of research carried out mostly over the past decade by our group, on the behavior and ecology of lizard spec...
Selection should favor individuals that can assess the quality of their future offspring′s habita... more Selection should favor individuals that can assess the quality of their future offspring′s habitat in terms of its physical features and the presence of competitors or predators. Studies have shown that the presence of tadpoles at a site may deter adults from ovipositing there as the ...
Oviposition site selection was investigated in Pleurodema borellii, a leptodactylid frog from Nor... more Oviposition site selection was investigated in Pleurodema borellii, a leptodactylid frog from Northern Argentina. We monitored the breeding activity of P. borellii during six months at two different sized pools, which were 15 m apart. Calling males, mating pairs, number of foam nests, ...
... His step-children are Monique Halloy, Ph.D. in Life Sciences and professor at the FundaciónMi... more ... His step-children are Monique Halloy, Ph.D. in Life Sciences and professor at the FundaciónMiguel Lillo in Tucumán, Argentina; Philippe Halloy, computation system analyst in Concepción near Tucumán; Christian Halloy, Ph.D. in physics and chemistry and a master's degree ...
... vocalizations [Snowdon et al., 19831, common in forest-dwelling primates of the New and the O... more ... vocalizations [Snowdon et al., 19831, common in forest-dwelling primates of the New and the Old World [Cleveland & Snowdon, 1982; Gautier & Gautier-Hion, 1977; Waser, 19771. They often have a complex structure composed of several phrases, each phrase having a ...
The study of the diet of a species can help us understand its natural history and strategies
invo... more The study of the diet of a species can help us understand its natural history and strategies involved in searching for food. Here we describe the diets of two syntopic lizard species from northwestern Argentina, Liolaemus quilmes and L. ramirezae. We compare the two species with respect to their general diet and we compare males and females of L. quilmes with respect to their favorite prey item, ants. Both species are insectivorous and diurnal, and they are of similar sizes, L. quilmes being slightly larger than L. ramirezae. We examined fecal samples of field captured lizards and stomach contents of preserved specimens from the Fundación Miguel Lillo (54 L. quilmes and 16 L. ramirezae). Prey items were identified to order and, in Formicidae (Hymenoptera), to species. The two Liolaemus species ate prey that belonged mainly to three insect orders: Coleoptera, Hemiptera (Heteroptera), and Hymenoptera. Liolaemus quilmes ate significantly more Hymenoptera than L. ramirezae, whereas the latter ate more Coleoptera and Hemiptera (Heteroptera). With respect to Formicidae, female L. quilmes ate significantly more ants of three species characterized by soft bodies and lack of functional stings than males. These dietary differences between the two species and between males and females of L. quilmes suggest that, with similar prey availability, the lizards use resources differently. Further studies are needed to address these differences. Finally, we compare our results to those obtained in other Liolaemus species.
... MONIQUE HALLOY,'3 RICHARD ETHERIDGE,2 AND GORDON M. BURGHARDT' &... more ... MONIQUE HALLOY,'3 RICHARD ETHERIDGE,2 AND GORDON M. BURGHARDT' 'Dept. ... Se sabe que no ocurre en algunas otras especies del grupo montanus, un clado mas inclusive al cual el grupo boulengeri pertenece, pero no hay datos para las especies restantes. ...
The feeding behaviour of four species of garter snakes (Thamnophis butleri, T. melanogaster, T. r... more The feeding behaviour of four species of garter snakes (Thamnophis butleri, T. melanogaster, T. radix, and T. sirtalis) was observed in an attempt to determine differences across species and among age groups with respect to capturing, handling and swallowing ...
... Monique Halloy 1 , 4 , Jorgelina M. Boretto 2 , 3 , Nora R. Ibargüengoytía 2 , 3. ... In addi... more ... Monique Halloy 1 , 4 , Jorgelina M. Boretto 2 , 3 , Nora R. Ibargüengoytía 2 , 3. ... In addition, the mother and her young may share the same area during long periods of time, including years (eg, Halloy and Halloy, 1997; Lemos-Espinal et al., 1997; Bull and Baghurst, 1998; Mouton ...
The Neotropical lizard Liolaemus pacha (Juárez Heredia et al. 2013. Zootaxa. 3681: 524–538), prev... more The Neotropical lizard Liolaemus pacha (Juárez Heredia et al. 2013. Zootaxa. 3681: 524–538), previously known as L. quilmes (Etheridge, 1993. Boll. Mus. Reg. Sci. Nat. Torino. 11: 137–199), belongs to the L. darwinii group, and it is one of more than 250 species attributed to this genus (Abdala and Quinteros, 2014. Cuad. Herp. 28(2):55-82). Liolaemus species show a great variety of habitat preferences, reproductive strategies and feeding habits. Liolaemus pacha is found in Northwestern Argentina, at “Los Cardones” (26.6670° S, 65.8180° W, datum: WGS84; elev. = 2725 m), Tucumán province. Halloy et al. (2006, Rev. Esp. Herp. 20:47–56) found that L. pacha was primarily insectivorous, eating mainly ants (Hymenoptera: Formicidae) but also insects from the orders Hemiptera (Heteroptera) and Coleoptera. The authors also reported the presence of plant material in one male although they could not identify it. We filmed individuals of this species with a digital camera (Sony HDR-Cx290) in the...
Presentamos un resumen de investigaciones realizadas en su mayoría durante la última déca-da por ... more Presentamos un resumen de investigaciones realizadas en su mayoría durante la última déca-da por nuestro grupo, sobre comportamiento y ecología de lagartijas del género Liolaemus y Phymaturus de Argentina. Llevamos a cabo estudios sobre su comunicación, territorialidad, elección de pareja, función de la coloración nupcial en hembras, relación entre dieta y estado reproductivo, cuidado parental, y filogenia basada en el comportamiento de inmersión en arena. Describimos brevemente cada uno de estos temas y reportamos los resultados más relevantes. Además del valor intrínseco de este tipo de estudios, ellos pueden proveer información valiosa que puede ser utilizada en la elaboración de estrategias de manejo y conservación de especies animales, particularmente en este grupo de Iguania en el que muchas especies son endémicas y a menudo poco conocidas. ABSTRACT We present a summary of research carried out mostly over the past decade by our group, on the behavior and ecology of lizard spec...
Selection should favor individuals that can assess the quality of their future offspring′s habita... more Selection should favor individuals that can assess the quality of their future offspring′s habitat in terms of its physical features and the presence of competitors or predators. Studies have shown that the presence of tadpoles at a site may deter adults from ovipositing there as the ...
Oviposition site selection was investigated in Pleurodema borellii, a leptodactylid frog from Nor... more Oviposition site selection was investigated in Pleurodema borellii, a leptodactylid frog from Northern Argentina. We monitored the breeding activity of P. borellii during six months at two different sized pools, which were 15 m apart. Calling males, mating pairs, number of foam nests, ...
... His step-children are Monique Halloy, Ph.D. in Life Sciences and professor at the FundaciónMi... more ... His step-children are Monique Halloy, Ph.D. in Life Sciences and professor at the FundaciónMiguel Lillo in Tucumán, Argentina; Philippe Halloy, computation system analyst in Concepción near Tucumán; Christian Halloy, Ph.D. in physics and chemistry and a master's degree ...
... vocalizations [Snowdon et al., 19831, common in forest-dwelling primates of the New and the O... more ... vocalizations [Snowdon et al., 19831, common in forest-dwelling primates of the New and the Old World [Cleveland & Snowdon, 1982; Gautier & Gautier-Hion, 1977; Waser, 19771. They often have a complex structure composed of several phrases, each phrase having a ...
The study of the diet of a species can help us understand its natural history and strategies
invo... more The study of the diet of a species can help us understand its natural history and strategies involved in searching for food. Here we describe the diets of two syntopic lizard species from northwestern Argentina, Liolaemus quilmes and L. ramirezae. We compare the two species with respect to their general diet and we compare males and females of L. quilmes with respect to their favorite prey item, ants. Both species are insectivorous and diurnal, and they are of similar sizes, L. quilmes being slightly larger than L. ramirezae. We examined fecal samples of field captured lizards and stomach contents of preserved specimens from the Fundación Miguel Lillo (54 L. quilmes and 16 L. ramirezae). Prey items were identified to order and, in Formicidae (Hymenoptera), to species. The two Liolaemus species ate prey that belonged mainly to three insect orders: Coleoptera, Hemiptera (Heteroptera), and Hymenoptera. Liolaemus quilmes ate significantly more Hymenoptera than L. ramirezae, whereas the latter ate more Coleoptera and Hemiptera (Heteroptera). With respect to Formicidae, female L. quilmes ate significantly more ants of three species characterized by soft bodies and lack of functional stings than males. These dietary differences between the two species and between males and females of L. quilmes suggest that, with similar prey availability, the lizards use resources differently. Further studies are needed to address these differences. Finally, we compare our results to those obtained in other Liolaemus species.
... MONIQUE HALLOY,'3 RICHARD ETHERIDGE,2 AND GORDON M. BURGHARDT' &... more ... MONIQUE HALLOY,'3 RICHARD ETHERIDGE,2 AND GORDON M. BURGHARDT' 'Dept. ... Se sabe que no ocurre en algunas otras especies del grupo montanus, un clado mas inclusive al cual el grupo boulengeri pertenece, pero no hay datos para las especies restantes. ...
The feeding behaviour of four species of garter snakes (Thamnophis butleri, T. melanogaster, T. r... more The feeding behaviour of four species of garter snakes (Thamnophis butleri, T. melanogaster, T. radix, and T. sirtalis) was observed in an attempt to determine differences across species and among age groups with respect to capturing, handling and swallowing ...
... Monique Halloy 1 , 4 , Jorgelina M. Boretto 2 , 3 , Nora R. Ibargüengoytía 2 , 3. ... In addi... more ... Monique Halloy 1 , 4 , Jorgelina M. Boretto 2 , 3 , Nora R. Ibargüengoytía 2 , 3. ... In addition, the mother and her young may share the same area during long periods of time, including years (eg, Halloy and Halloy, 1997; Lemos-Espinal et al., 1997; Bull and Baghurst, 1998; Mouton ...
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Papers by Monique Halloy
involved in searching for food. Here we describe the diets of two syntopic lizard species from
northwestern Argentina, Liolaemus quilmes and L. ramirezae. We compare the two species with respect
to their general diet and we compare males and females of L. quilmes with respect to their favorite prey
item, ants. Both species are insectivorous and diurnal, and they are of similar sizes, L. quilmes being
slightly larger than L. ramirezae. We examined fecal samples of field captured lizards and stomach
contents of preserved specimens from the Fundación Miguel Lillo (54 L. quilmes and 16 L. ramirezae).
Prey items were identified to order and, in Formicidae (Hymenoptera), to species. The two Liolaemus
species ate prey that belonged mainly to three insect orders: Coleoptera, Hemiptera (Heteroptera), and
Hymenoptera. Liolaemus quilmes ate significantly more Hymenoptera than L. ramirezae, whereas the
latter ate more Coleoptera and Hemiptera (Heteroptera). With respect to Formicidae, female L. quilmes
ate significantly more ants of three species characterized by soft bodies and lack of functional stings
than males. These dietary differences between the two species and between males and females of
L. quilmes suggest that, with similar prey availability, the lizards use resources differently. Further
studies are needed to address these differences. Finally, we compare our results to those obtained in
other Liolaemus species.
involved in searching for food. Here we describe the diets of two syntopic lizard species from
northwestern Argentina, Liolaemus quilmes and L. ramirezae. We compare the two species with respect
to their general diet and we compare males and females of L. quilmes with respect to their favorite prey
item, ants. Both species are insectivorous and diurnal, and they are of similar sizes, L. quilmes being
slightly larger than L. ramirezae. We examined fecal samples of field captured lizards and stomach
contents of preserved specimens from the Fundación Miguel Lillo (54 L. quilmes and 16 L. ramirezae).
Prey items were identified to order and, in Formicidae (Hymenoptera), to species. The two Liolaemus
species ate prey that belonged mainly to three insect orders: Coleoptera, Hemiptera (Heteroptera), and
Hymenoptera. Liolaemus quilmes ate significantly more Hymenoptera than L. ramirezae, whereas the
latter ate more Coleoptera and Hemiptera (Heteroptera). With respect to Formicidae, female L. quilmes
ate significantly more ants of three species characterized by soft bodies and lack of functional stings
than males. These dietary differences between the two species and between males and females of
L. quilmes suggest that, with similar prey availability, the lizards use resources differently. Further
studies are needed to address these differences. Finally, we compare our results to those obtained in
other Liolaemus species.