Diet and Trophic Structure in a Community of Fruit-Eating Bats in Lacandon Forest, México

Silva, Anders Gonçalves da; Gaona, Osiris; Medellín, Rodrigo A.

doi:10.1644/06-mamm-a-300.1

Cited by 55 publications

(44 citation statements)

References 29 publications

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“…A variable more important and descriptive than trophic level could be diet specialization, but this variable was not included; detailed descriptions of the diets of species within our area of study do not exist, and existing descriptions show high geographical variation [75][76][77]. On the other hand, vertical foraging area is a highly flexible trait [26] and a sole species can use several forest strata [24,26].…”

Section: Discussionmentioning

confidence: 99%

Ecological Traits of Phyllostomid Bats Associated with Sensitivity to Tropical Forest Fragmentation in Los Chimalapas, Mexico

García-García

Santos‐Moreno

Kraker‐Castañeda

2014

Tropical Conservation Science

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Certain ecological traits of bats may be associated with sensitivity to the fragmentation of their habitat, but the relative importance of this is unclear and has been poorly studied in tropical environments. We evaluated the relationship between six ecological traits of phyllostomid bats (body mass, trophic level, vertical foraging area, natural abundance in continuous forest, wing aspect ratio, and relative wing loading) and three measures of sensitivity to habitat fragmentation (species prevalence, change in abundance index, and nestedness ranking) in a fragmented forest in Los Chimalapas, Mexico. Ecological traits were obtained from 20 bat species for a period of 2 years, and their relationship with measures of sensitivity to fragmentation was analyzed using Generalized Linear Models. The analysis suggests that naturally non-abundant species (e.g., Salvin's Big-eyed Bat [Chiroderma salvini]) have a greater risk of population decline because of habitat fragmentation. In contrast, abundant species such as Jamaican Fruit-eating Bat (Artibeus jamaicensis) will likely be less affected. The identification of these traits in studies of tropical bat conservation is fundamental to determine species-specific decline risk due to habitat fragmentation.Keywords: tropical bats; population decline; habitat fragmentation; Los Chimalapas tropical forest; Mexico. ResumenCiertas características ecológicas de los murciélagos están asociadas a la sensibilidad a la fragmentación de su hábitat, sin embargo su importancia relativa no es clara y no han sido estudiadas en paisajes tropicales. Se evaluó la relación de seis característica ecológicas (masa corporal, nivel trófico, carga relativa y proporción de aspecto del ala, área vertical de forrajeo y abundancia natural) de murciélagos filostómidos con tres medidas de la sensibilidad a la fragmentación de hábitat (permanecía de especies, índice de cambio en abundancia y rango de anidamiento) en un bosque fragmentado en Los Chimalapas, México. Las características ecológicas fueron obtenidas de 20 especies de murciélagos filostómidos en un paisaje fragmentado durante un periodo de 2 años. Se emplearon Modelos Lineales Generalizados para evaluar la las relaciones entre las características ecológicas y las medidas de sensibilidad a la fragmentación. Esta relación indica que especies naturalmente poco abundantes (e.g., murciélago de ojos grandes de Salvin [Chiroderma salvini]) son más probable que declinen debido a la fragmentación de hábitat, y de manera contraria, especies abundantes (e.g., murciélago frutero de Jamaica [Artibeus jamaicensis]) podrían ser afectados en menor medida. La determinación de estas variables en los estudios dirigidos a la conservación de murciélagos tropicales podrían ser claves para determinar el riesgo de decline de una especies debido a la fragmentación de hábitat.Palabras claves: murciélagos tropicales; decline poblacional; fragmentación de hábitat; el bosque tropical de Los Chimalapas; México.

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Section: Discussionmentioning

confidence: 99%

Ecological Traits of Phyllostomid Bats Associated with Sensitivity to Tropical Forest Fragmentation in Los Chimalapas, Mexico

García-García

Santos‐Moreno

Kraker‐Castañeda

2014

Tropical Conservation Science

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“…Todos los ejemplares adultos fueron marcados con collares de nylon numerados (Gannon 1994, García-García et al 2010, para no ser contados más de una ocasión. Los gremios tróficos fueron determinados a partir de la literatura (Freeman 1998;Wetterer et al 2000;Nogueira & Peracchi 2003;Giannini & Kalko 2004;Tschapka 2004;Kalka & Kalko 2006;da Silva et al 2008) (Apéndice 2).…”

Section: Captura De Murciélagosunclassified

Efectos de la estructura del paisaje y de la vegetación en la diversidad de murciélagos filostómidos (Chiroptera: Phyllostomidae) de Oaxaca, México

García-García

Santos‐Moreno

2014

RBT

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Effects of landscape and vegetation structure on the diversity of phyllostomid bats (Chiroptera: Phyllostomidae) in Oaxaca, Mexico. The tropical forest fragmentation is known to affect the spatial structure of the landscape and habitat. These alterations can modify the attributes of bat assemblages, however, this phenomenon has been little studied and understood. In this work we evaluated the structure of landscape (i.e. composition and configuration) and vegetation, and its relationship with assemblage-and population-level characteristics of phyllostomid bats in a tropical rainforest of Southeastern Mexico. For this, we previously selected 12 sites located in continuous and fragmented forests, where bats were captured using mist nets during a two years sampling effort (144 nights). Bats relative abundance, species richness (diversity of order 0, 0 D), Shannon diversity index ( 1 D) and Simpson index ( 2 D) were evaluated in all sites, and their relationship with seven measures of landscape structure and seven measures of vegetation structure was described using a Hierarchical Partitioning Analysis. A total of 1 840 individuals of 29 species of phyllostomid bats were captured in this period. Differences in the assemblages were manifested only in the relative abundance and not in the richness of the species. The assemblages of fragmented forest exhibited greater variation in species composition and a greater abundance of frugivorous and nectarivorous bats in comparison with the assemblages of continuous forest. The landscape configuration was related to the assemblage-and population-level attributes, contrasting with previous studies where the composition was a key element. At habitat level, tree density and canopy cover determined the abundance of bats. Nectarivorous and frugivorous bats were mostly found in disturbed vegetation landscapes, primarily due to landscape configuration (e.g. edge density). This phenomenon could be a response to the availability of food in primary and intermediate successional stages, which are characterized by an abundance of food value. Rev. Biol. Trop. 62 (1): 217-239. Epub 2014 March 01.

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“…A variação sazonal no número de captura de A. lituratus observada no presente estudo pode estar relacionada à dieta da espécie, a qual é baseada principalmente em frutos das Famílias Cecropiaceae e Moraceae (PASSOS et al, 2003;GRACIOLLI, 2004;SILVA et al, 2008). Estas duas famílias de plantas apresentam síndromes de fruti cação do tipo "big-bang", que são caracterizadas por grande produção de frutos em curtos períodos de tempo (MELLO, 2009), acarretando correspondente variação na disponibilidade de recurso alimentar.…”

Section: Discussionunclassified

Variação sazonal no número de captura de Artibeus lituratus e Sturnira lilium (Chiroptera: Phyllostomidae) no estrato superior de um remanescente de Mata Atlântica no sul do Brasil

2014

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Diet and Trophic Structure in a Community of Fruit-Eating Bats in Lacandon Forest, México

Cited by 55 publications

References 29 publications

Ecological Traits of Phyllostomid Bats Associated with Sensitivity to Tropical Forest Fragmentation in Los Chimalapas, Mexico

Ecological Traits of Phyllostomid Bats Associated with Sensitivity to Tropical Forest Fragmentation in Los Chimalapas, Mexico

Efectos de la estructura del paisaje y de la vegetación en la diversidad de murciélagos filostómidos (Chiroptera: Phyllostomidae) de Oaxaca, México

Variação sazonal no número de captura de Artibeus lituratus e Sturnira lilium (Chiroptera: Phyllostomidae) no estrato superior de um remanescente de Mata Atlântica no sul do Brasil

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