Morphometric variability in Artibeus planirostris (Chiroptera: Phyllostomidae) in environments with different states of conservation in the Atlantic Forest, Brazil

Filho, Sérgio Almeida de Medeiros; Carvalho-Neto, Francisco Geraldo de; Garcia, Ana Cristina Lauer; Montes, Martín Alejandro; Duarte‐Neto, Paulo José

doi:10.1016/j.mambio.2018.03.002

Cited by 7 publications

(5 citation statements)

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“…Ferreira, Mendl, Guilherme, et al, 2016), health and conservation (e.g. Morton, Todd, Lee, & Masi, 2013;de Medeiros Filho, de Carvalho-Neto, Garcia, et al, 2018), reproduction (e.g. Venturini, Savegnago, Nunes, et al, 2013), life history (e.g.…”

Section: Introductionmentioning

confidence: 99%

Data reduction analyses of animal behaviour: avoiding Kaiser's criterion and adopting more robust automated methods

Morton

2019

Animal Behaviour

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Data reduction analyses like principal components and exploratory factor analyses identify relationships within a set of potentially correlated variables, and cluster correlated variables into a smaller overall quantity of groupings. Because of their relative objectivity, these analyses are popular throughout the animal literature to study a wide variety of topics. Numerous authors have highlighted "best practice" guidelines for component/factor "extraction", i.e. determining how many components/factors to extract from a data reduction analysis, because this can greatly impact the interpretation, comparability, and replicability of one's results. Statisticians agree that Kaiser's criterion, i.e. extracting components/factors with eigenvectors >1.0, should never be used yet within the animal literature, a considerable number of authors still use it, including publications as recent as 2018, and across a wide range of taxa (e.g. insects, birds, fish, mammals) and topics (e.g. personality, cognition, health, morphology, reproduction). It is therefore clear that further awareness is needed to target the animal sciences to ensure that results optimise structural stability, and thus, comparability and reproducibility. In the present commentary, we first clarify the distinction between principal components and exploratory factor analyses in terms of analysing simple versus complex structures, and how this relates to component/factor extraction. Second, we highlight empirical evidence from simulation studies to explain why certain extraction methods are more reliable than others, including why automated methods are better, and why Kaiser's criterion is inappropriate and should therefore never be used. Third, we provide recommendations on what to do if multiple automated extraction methods "disagree" which can arise when dealing with complex structures. Finally, we explain how to perform and interpret more robust and automated extraction tests using R.

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Section: Introductionmentioning

confidence: 99%

Data reduction analyses of animal behaviour: avoiding Kaiser's criterion and adopting more robust automated methods

Morton

2019

Animal Behaviour

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“…Análisis temporal de la disponibilidad de frutos para los sistemas de ganadería convencional y silvopastoril (SSP) en el departamento de Córdoba. -Vázquez et al 2010, Medeiros et al 2018.…”

Section: Discussionunclassified

“…Estas condiciones pueden generar cambios en la dinámica de los ecosistemas, estructura trófica y procesos ecológicos, con posibles implicaciones en la preferencia del hábitat de los organismos (Aguirre et al 2002, Fahrig 2003, Arias 2008, Mena 2010, Doudna & Danielson 2015. De este modo, el ambiente puede influir en la morfología de los organismos a través de factores ambientales como la ubicación geográfica, la estructura del hábitat, la amplitud de la dieta y la repartición de los recursos, entre otros, actuando como medio de presión selectiva buscando probablemente reducir la competencia entre los individuos (Ricklefs & Miles 1994, Mancina & Balseiro 2010, Medeiros et al 2018.…”

Section: Introductionunclassified

“…Los murciélagos son conocidos debido a que responden a las modificaciones ecológicas, a través de cambios en la composición taxonómica como en la repartición de especies en gremios alimenticios (Willig et al 2007, Jiménez-Ortega & Mantilla-Meluk 2008, Klingbeil & Willig 2009), y en los mecanismos morfológicos relacionados con las características propias de cada hábitat (Moreno et al 2006, Arias 2008. Diferencias en los parámetros morfológicos explican diversos niveles de flexibilidad conductual Stevens et al 2016, Oliveira et al 2017, Medeiros et al 2018, donde se supone que los animales que están en mejores condiciones son más exitosos (McGuire et al 2018). A pesar de esto, en sistemas agropecuarios no se ha evaluado el efecto de los sistemas de ganadería sobre la condición corporal de los murciélagos.…”

Section: Introductionunclassified

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MEJOR CONDICIÓN CORPORAL DE Artibeus lituratus EN FRAGMENTOS DE BOSQUE SECO ASOCIADOS A SISTEMAS SILVOPASTORILES QUE EN SISTEMAS CONVENCIONALES DE GANADERÍA EN CÓRDOBA, COLOMBIA

Chacón-Pacheco¹,

Ballesteros-Correa²

2019

Oecol. Aust.

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Resumen: El objetivo de este trabajo fue conocer la relación entre características del hábitat y el índice de condición corporal (ICC) de murciélagos fruteros Artibeus lituratus en fragmentos de Bosque Seco Tropical (bs-T) asociados a dos sistemas de manejo: sistema convencional (SC) y sistema silvopastoril (SSP) de ganadería extensiva. Para ello, se obtuvo la masa corporal (g), la medida del antebrazo (mm) y el índice de condición corporal (masa corporal/longitud del antebrazo). Para evaluar la diferencia entre los sistemas de ganadería, se calculó la diversidad alfa verdadera de la vegetación, q = 0 (riqueza de especies, 0 D) y q = 1 (exponencial del índice de entropía de Shannon, 1 D), y se analizaron las variables morfométricas y la disponibilidad de frutos a través de estadísticos descriptivos como la prueba de Kruskal-Wallis. Los valores promedios superiores para el ICC y la masa corporal se encontraron para el SSP, mostrando diferencias significativas frente a SC. Para el SSP, la disponibilidad de frutos presentó valores promedios más altos (4.12 ± 5,37) en comparación a los SC (3,62 ± 3,44). La diversidad vegetal presentó mayores valores para q = 0 en el SSP ( 0 D = 158, 1 D = 54.19); sin embargo, para q = 1 fue superior en el SC ( 0 D = 142, 1 D = 68.73). La variable que presentó mayor relación con el ICC fue el sistema de manejo. Los resultados pueden indicar que fragmentos de Bosque Seco Tropical inmersos en matrices de SSP brindan mayores recursos, mejor calidad del hábitat y conectividad funcional, factores que influyen de manera positiva en la condición corporal y la masa corporal del murciélago Artibeus lituratus. Palabras clave: Artibeus; Chiroptera; frugívoros; ganadería extensiva. BETTER BODY CONDITION OF Artibeus lituratus IN FRAGMENTS OF TROPICAL DRY FOREST ASSOCIATED WITH SILVOPASTORAL SYSTEMS THAN IN CONVENTIONAL LIVESTOCK SYSTEMS IN CÓRDOBA, COLOMBIAThe objective of this study was to know the relationship between habitat characteristics and the body condition index (BCI) of fruiteating bats Artibeus lituratus in fragments of Tropical Dry Forest associated with livestock farming, specifically two management systems: conventional systems (SC) and silvopastoral systems (SSP). The body mass (g), measurement of the forearm (mm) and the body condition (body mass/forearm length). Finally, we evaluated the difference between the management systems, we determined the true diversity of vegetation, q = 0 (species richness, 0 D) and q = 1 (exponential of Shannon entropy, 1 D), and we analized morphometric variables and fruit available through descriptive statistics like the Kruskal-Wallis test. The higher averages values for the BCI and body mass were found in the SSP, showing significant differences with the SC, the average available fruits was higher (4.12 ± 5.37) than Apéndice 1. Continua en la seguiente página... Appendix 1. Continued on next page…

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“…Bats can also act as dispersers of seeds, pollinators, controllers of insect populations and predators of small vertebrates (Peixoto et al 2018). In anthropogenically modified areas, bats also may respond to variations in their morphological characteristics, causing bats with smaller forearms to be influenced by selective pressure in more preserved environments (Medeiros-Filho et al 2018), changes in diet (Castaño et al 2020) and generally decline in richness and abundance of the community (Gonc ßalves et al 2017;Wordley et al 2018). Therefore, species composition and beta diversity may differ among habitats subjected to different land uses (Heer et al 2015;Pereira et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Effect of forestry (Pinus sp.) on the bat community (Mammalia: Chiroptera) in Neotropical region

et al. 2021

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Different land uses can influence the way species are distributed across the landscape, which can generate arguments and justifications for conservation and the management of potential areas for conservation. Our study aimed to evaluate the structural complexity of the habitat (canopy openness) and the different land uses (native forest cover, silviculture and agriculture) in the composition of species of the bat community in areas of native forest and silviculture. We also aimed to compare the richness, abundance and beta diversity between these habitats. Bats were captured using mist nets during 21 nights of sampling in each area. We found an unusual pattern for bat assemblages in Neotropical regions, registering greater species richness for the family Vespertilionidae. No significant differences were found between the two areas regarding the abundance, species composition and beta diversity. The native forest area showed greater species richness, corroborating our hypothesis. We demonstrated how bat species are distributed in habitats with different land uses, as well as the importance of native forest areas to maintain the set of regional species.

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Morphometric variability in Artibeus planirostris (Chiroptera: Phyllostomidae) in environments with different states of conservation in the Atlantic Forest, Brazil

Cited by 7 publications

References 44 publications

Data reduction analyses of animal behaviour: avoiding Kaiser's criterion and adopting more robust automated methods

Data reduction analyses of animal behaviour: avoiding Kaiser's criterion and adopting more robust automated methods

MEJOR CONDICIÓN CORPORAL DE Artibeus lituratus EN FRAGMENTOS DE BOSQUE SECO ASOCIADOS A SISTEMAS SILVOPASTORILES QUE EN SISTEMAS CONVENCIONALES DE GANADERÍA EN CÓRDOBA, COLOMBIA

Effect of forestry (Pinus sp.) on the bat community (Mammalia: Chiroptera) in Neotropical region

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