VARIAÇÃO NA DIETA DE Artibeus lituratus E Sturnira lilium (CHIROPTERA: PHYLLOSTOMIDAE)
EM TRÊS REGIÕES FITOGEOGRÁFICAS NO SUL DO BRASIL

Bôlla, Daniela Aparecida Savariz; Carvalho, Fernando; Gazarini, Janaina; Zocche, Jairo José; Pedro, Wagner André

doi:10.31687/saremmn.18.25.1.0.02

Cited by 2 publications

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“…This difference may indicate that the composition of this species diet varies throughout its distribution, and probably changes according to the environment. Although there is little information in literature about the diet of T. bidens in other areas, hindering comparison, there are records for other bat species (see Bôlla et al 2018), including animalivores species (see Bordignon 2006). Even though geographical variation may be important for T. bidens diet, this hypothesis still needs to be tested.…”

Section: Discussionmentioning

confidence: 99%

“…In Brazil, there are records of T. bidens in 12 states (Peracchi et al 2011), but information about the diet composition of the species in the Atlantic Forest biome comes of observations from only two states of southeastern Brazil (Martuscelli 1995, Esbérard and Bergallo 2004, Felix et al 2013. Insufficient data hinders the study of temporal and spatial variations in the populations' diet, which have been described for other Phyllostomidae species, for instance Artibeus lituratus (Olfers, 1818) and Sturnira lilium (E. Geoffroy, 1810) (e.g, Passos and Graciolli 2004, Mello et al 2004, Barros et al 2013, Bôlla et al 2018. Variations in diet among se xes, seasons and localities were also described for other families, as the Noctilionidae Noctilio leporinus (Linnaeus, 1758) (Noctilionidae), a broadly distributed animalivorous species (Bordignon 2006).…”

Section: Introductionmentioning

confidence: 99%

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Chilling to the bone: Lower temperatures increase vertebrate predation by Tonatia bidens (Chiroptera: Phyllostomidae)

et al. 2020

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The greater round-eared bat, Tonatia bidens (Spix, 1823), is a medium-sized phyllostomid bat distributed in the north of Argentina, Paraguay and Brazil. The diet and foraging patterns of this species are poorly known. We analyzed the composition of the diet of a population of T. bidens and how the temperature influences the consumption of vertebrates and invertebrates. To describe diet composition, we conducted weekly collections of food scrap from two monospecific night-perches. Data of temperature for the study period were taken from the meteorological station installed 300 m from the collection perches. The influence of temperature was evaluated using generalized linear models (GLMs) with negative binomial distribution. Tonatia bidens consumed 28 taxons (204 records), being at least 17 Artropods and 11 Passeriformes birds. Temperature explained a greater proportion of vertebrate abundance (R2 = 0.23) than invertebrate (R2 = 0.16) or to both pooled (R2 = 0.11). The relation with temperature was positive with invertebrates and negative with the vertebrates. The diet of the population of T. bidens comprised mainly invertebrates, which were the most frequent and diverse taxa. Data suggests that T. bidens has a diverse diet, with proportion of the item’s consumption varying temporally. Environmental factors, such as the temperature presented on this work, seems to be good proxies for the dietary traits of this species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chilling to the bone: Lower temperatures increase vertebrate predation by Tonatia bidens (Chiroptera: Phyllostomidae)

et al. 2020

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“…Bats of the genus Artibeus Leach, 1821 (Phyllostomidae, Stenodermatinae) are restricted to the Neotropical region and it currently consists of 10 species distributed from Mexico to the north of Argentina and southern Brazil (Koopman 1982, Owen 1987, Marques-Aguiar 1994, Lim et al 2004, Simmons 2005, Gardner 2008, Redondo et al 2008, Solari et al 2009, Reis et al 2011, Ferreira et al 2014. Besides, bats of this genus are mainly frugivorous and they play an important role in forest regeneration acting as seed dispersers, especially in early successional forests (Mikich 2002, Passos & Passamani 2003, Galetti & Morellato 2004, Passos & Graciolli 2004, Oprea et al 2007, Oliveira & Lemes 2010, Bôlla et al 2018, Pereira et al 2019.…”

Section: Introductionmentioning

confidence: 99%

Comparative retinal histomorphometry and visual acuity of three bat species of the genus Artibeus (Phyllostomidae: Stenodermatinae)

et al. 2020

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This study performed a histomorphometric analysis of the retina and estimated the visual acuity of three fruit-eating bats of the genus Artibeus, including Artibeus lituratus, Artibeus planirostris and Artibeus obscurus. In total, 13 animals were used for this study, in which the retinas were hemidisected, fixed, cut, and stained. The visual acuity was determined by the density of ganglion cells in the retina and the retinal layers were also measured from histological sections. The retinas of these bats are avascular, do not present tapetum lucidum in any quadrant, and have the 10 retinal layers common in mammals. Moreover, it was observed that the thickness of the retina in the central region was significantly higher in all measured parameters (p<0.001), except for the outer plexiform layer (OPL) which was significantly higher in the peripheral region (p<0.001). The retinas of the three species showed a horizontal visual streak with a higher concentration of retinal ganglion cells (RGCs) at the inferotemporal region. In addition, the species A. lituratus exhibited extras areas of high cell density in the retina. Thus, A. lituratus showed the highest visual acuity (1.92 cycles/degree), while A. planirostris showed a visual acuity of (1.77 cycles/degree) and A. obscurus exhibited the lowest visual acuity (1.50 cycles/degree). All these characteristics are related to the echolocation system and the eating habits of each species. Therefore, it can be concluded that bats of the genus Artibeus have a high visual acuity value compared to other echolocating bats and all these differences might be directly linked to the phylogeny of the genus.

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VARIAÇÃO NA DIETA DE Artibeus lituratus E Sturnira lilium (CHIROPTERA: PHYLLOSTOMIDAE) EM TRÊS REGIÕES FITOGEOGRÁFICAS NO SUL DO BRASIL

Cited by 2 publications

References 0 publications

Chilling to the bone: Lower temperatures increase vertebrate predation by Tonatia bidens (Chiroptera: Phyllostomidae)

Chilling to the bone: Lower temperatures increase vertebrate predation by Tonatia bidens (Chiroptera: Phyllostomidae)

Comparative retinal histomorphometry and visual acuity of three bat species of the genus Artibeus (Phyllostomidae: Stenodermatinae)

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