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Of Araceae (Zantedeschia Aethiopica (L.) Spreng)

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Of Araceae (Zantedeschia Aethiopica (L.) Spreng) Ayala, Hurtado and Giraldo, 2014 First record of Anura (Dendropsophus columbianus -Anura: ... First record of Anura (Dendropsophus columbianus -Anura: Hylidae-) as floral visitors of Araceae (Zantedeschia aethiopica (L.) Spreng) Román Felipe Díaz-Ayala Grupo de ecología y diversidad de anfibios y reptiles Universidad de Caldas, AA 275 Colombia Email: [email protected] Luisa Fernanda Hurtado Grupo de ecología y diversidad de anfibios y reptiles Universidad de Caldas, AA 275 Colombia [email protected] Julio Andrés Sierra-Giraldo Grupo de Investigación en Biodiversidad y Recursos Fitogenéticos Herbario Universidad de Caldas (FAUC), AA 275 Colombia E-mail: [email protected] ABSTRACT KEY WORDS No amphibian has yet been reported Araceae, Amphibian, habitat use, plant- among the many interactions between animal interaction. Araceae and their flower visitors. This paper reports the possible use of the inflorescences of Zantedeschia aethiopica as a INTRODUCTION habitat for Dendropsophus columbianus, and The interactions Araceae – vertebrates are suggests that further exploration of this mainly documented for herbivorous kind of interaction would be of interest. mammals (Altricher et al., 2000; Hibert et al., 2013) or frugivorous animals such as bats, primates, marsupials or birds (Santori et al., 1995; Thoisy & Richard-Hansen 1997; Vieira & Izar, 1999; Galetti et al., 2000; Aroideana VOL 37E NO 1, 2014 4 Ayala, Hurtado and Giraldo, 2014 First record of Anura (Dendropsophus columbianus -Anura: ... Cockle, 2001). It appears that vertebrates 1997; Gibernau, 2011), but no observations are not associated with the pollination of have been published so far in the Araceae and in fact the pollinators and floral introduction zones. In Zantedeschia, the visitors of Araceae are almost exclusively spathe is usually persistent, and closed at the invertebrates (Gibernau, 2011; Chartier et bottom with the top of wide open making al., 2014), although there is one known case an obconic subcylindric tube, (Mayo et al., of vertebrates visiting and probably 1997). So the inflorescence represents a pollinating an aroid; Anthurium sanguineum by wide cone large enough for a copulation site hummingbirds (Kraemer & Schmitt, 1999). or shelter of certain anurans similar to what can be found in bromeliads. Here we Among the vertebrates, anurans are not present the first record of an Amphibian as particularly associated with Araceae, but in a floral visitor of Zantedeschia aethiopica, in Brazil, the only known case studied, the the Department of Risaralda, Colombia. frugivorous frog (Xenohyla truncata) eats berries of Anthurium harrisii, and they form Detail of the record the main source of fruits for this frog during its fruiting season from August to Observations were done during November December (Da Silva et al., 1989; Da Silva & 24th and December 3rd of 2013, at the de Britto-Pereira, 2006; Galindo-Uribe & Hacienda Lisbran located on the western Hoyos-Hoyos, 2007). These fruits represent flank of the Colombian Central Cordillera an important complement to the insect diet in the Department of Risaralda, between collected in water tanks and could represent 1750 to 2250 masl, at the Swiss village of La a source for particular defensive toxins such Florida, municipality of Pereira (4°44’20” N as saponins and calcium oxalate crystals in 75°35’23” W). The average annual the case of Anthurium (Da Silva & Britto- temperature is 16.8°C with an average Pereira, 2006). Many Aroid species are annual rainfall of 2638.5 mm (MAVD, known to be used as leafhangers by various 2010). The habitat in the living area is a species of anurans and thus be part of their lower montane wet forest bmh-MB habitat (Rojas-Morales et al., 2011; Escobar- (Holdridge, 1971). Three sightings were Lasso & Rojas-Morales, 2012). recorded of Dendropsophus colombianus a terrestrial frog, endemic to Colombia (Ruiz- Zantedeschia is a genus distributed mainly in Carranza et al., 1996), visiting inflorescences South Africa, but introduced in the of Zantedeschia aethiopica. Individuals of Z. Neotropics and well adapted to the new aethiopica were located within 5 m of a water environments. They grow close to water body. bodies. In its natural habitat, its main floral visitors and pollinators are beetles of the The first sighting was on November 25th families Scarabaeidae and Scydmaenidae 2013 at 23:20 h. A male individual was (Letty, 1973; Singh et al., 1996; Mayo et al., Aroideana VOL 37E NO 1, 2014 5 Ayala, Hurtado and Giraldo, 2014 First record of Anura (Dendropsophus columbianus -Anura: ... Figures 1-2. The first sighting. -1. A male of D. Colombianus within the inflorescence of Z. aethiopica. Inside the white circle, at the bottom of the floor is a female possibly conspecific. -2. Detail of the male frog inside the inflorescence. Aroideana VOL 37E NO 1, 2014 6 Ayala, Hurtado and Giraldo, 2014 First record of Anura (Dendropsophus columbianus -Anura: ... Figures 3-6. Detail of the third sighting. -3. Individual of D. colombianus coming out of the young infructescence. -4. Location at the top of the young infructescence. -5. Slippage on the spathe. -6. Slippage on the outside of the young infructescence. Aroideana VOL 37E NO 1, 2014 7 Ayala, Hurtado and Giraldo, 2014 First record of Anura (Dendropsophus columbianus -Anura: ... vocalizing at a height of 114.3 cm, and affect reproduction during the day. The nearby on the basal leaves of the same inflorescences occupied by frogs were plant, a female individual was observed that pollinated, as indicated by the swelling of could be by its size a female of D. the base of spadix (ovaries) and the colombianus (Figures 1, 2). The second surrounding spathe and by wilting of the observation took place on November 31st upper parts (male flowers, flagging of the 2013 at 20:00 h, the same individual of D. spathe), which in Araceae is indicative of colombianus was found vocalizing and flower fertilization (Garcia-Robledo et al., perched on the same spathe of Z. aethiopica. 2005). The third sighting was on December 1st 2013 at 23:40 h, the individual of D. We think that since Zantedeschia aethiopica is colombianus was on the outside of a young an introduced species in the Neotropics, it maturing infructescence. This individual was may well be displacing other native aroids, observed to leave the inflorescence and later but may now allow other types of to slide down along the peduncle interaction with animals (Amphibious) that (Figures 3–6). were not possible in many native aroids due to the shape of the inflorescence. We We present here the first record of an recognize that this represents a small anuran making more than one visit to number of observations, but they were inflorescences of an Araceae. Our consistent enough to suggest that further observations appear to indicate that the frog field work is needed to study the frequency D. colombianus uses the inflorescence of Z. and the outcomes of this new and original aethiopica as a resource location for interaction between D. colombianus and Z. vocalization, copulation and maybe feeding. aethiopica in Colombia. Even more important This terrestrial frog has found in the would be to find a similar interaction inflorescence of Z. aethiopica a limited space involving an aroid native to the area. This in which to shelter but also easy to access could then lead to investigating an evolved from the ground and which offers an pathway, which could scarcely be possible elevated singing site., It is an advantage for when the plant component is a recent the males of D. colombianus to sing from introduction like the Zantedeschia. some height since their calls can be heard from a longer distance (Wells & Schwartz, 1982). Spending long periods of time within ACKNOWLEDGMENTS the inflorescence, the frogs might influence The authors thank Marc Gibernau by his the night reproduction of Z. aethiopica valuable observations, comments and positively by achieving potential pollination corrections to the manuscript. We are or negatively by feeding on visiting insects. grateful to Dora for her kindness in the It’s not known if the frogs stay within the field and also to the Universidad de Caldas inflorescence during the day and could Aroideana VOL 37E NO 1, 2014 8 Ayala, Hurtado and Giraldo, 2014 First record of Anura (Dendropsophus columbianus -Anura: ... for allowing this trip to the Hacienda (Lissamphibia: Anura: Hylidae). J. Lisbran. Zoology. 270. 692–698. Escobar-Lasso, S & J. A. Rojas-Morales. LITERATURE 2012. Antipredatory behaviors of the Altricher, M., J. Saenz., E. Carrillo & T. Colombian endemic glass frog Fuller. 2000. Dieta estacional del Centrolene savage (Anura: Centrolenidae). Tayassu pecari (Artiodactyla: Boletín Científico Museo de Historia Tayassuidae) en el parque nacional Natural Universidad de Caldas. 16 (1): Corcovado, Costa Rica. Revista de 226– 232. Biologia Tropical. 48: 689–702. Galetti, M., R. Laps & M.A. Pizo. 2000. Chartier M., M. Gibernau & S. Renner. Frugivory by Toucans 2014. The evolution of (Ramphastidae) at two altitudes in pollinator/plantinteraction types in the Atlantic forest of Brazil. the Araceae. Evolution: doi: Biotropica. 32: 842–850. 10.1111 /evo.12318. 1–11. Galindo-Uribe, D & J.M. Hoyos-Hoyos. Cockle, A. 2001. The dispersal and 2007. Relaciones Planta - recruitment of Cyclanthaceae and Herpetofauna: nuevas Philodendron (Araceae) understorey perspectivas para la investigación en root-climbing vines. In: Dans Colombia. Revista de la Facultad de Bongers et al., Nouragues. Dynamics Ciencias Edición especial. 12: 9–34. and plant-animal interactions in a neotropical rainforest. Kluwer García–Robledo, C., P. Quintero-Marín & F. Academic Publishers, Pays-Bas. Mora-Kepfer. 2005. Geographic 251–263. Variation and Succession of Arthropod Communities in Da Silva, H. R., M.C. de Britto-Pereira & Inflorescences and Infructescences of U. Caramaschi. 1989. Frugivory and Xanthosoma (Araceae). Biotropica. 37: seed dispersal by Hyla truncata, a 650–656. Neotropical tree frog. Copeia. 3: 781–783. Gibernau, M. 2011. Pollinators and visitors of aroid inflorescences: an addendum Da Silva, H.R & M.C.
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