Speciation Dynamics of the Fruit-Eating Bats (Genus Artibeus): With Evidence of Ecological Divergence in Central American Populations

Larsen, Peter A.; Marchán-Rivadeneira, María R.; Baker, Robert J.

doi:10.1007/978-1-4614-7397-8_16

Cited by 20 publications

(18 citation statements)

References 71 publications

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“…It appears that A. intermedius diversified in more arid environments, whereas A. lituratus occupied more mesic environments. Moreover, an absence of structure in the mitochondrial dataset in combination with significant structure in the nuclear dataset underlying these analyses suggests that strong directional selection over relatively short geological time periods has characterized the divergence of these two taxa (Larsen et al ., ).…”

Section: Discussionmentioning

confidence: 97%

“…Another example of the interplay between environment and phenotypic evolution in A. lituratus is found at the northern extreme of its geographical distribution. The specific status of Artibeus lituratus intermedius has been debated for years (Davis, ; Guerrero et al ., ; Larsen, Marchan‐Rivadeneira & Baker, ; Lim et al ., ; Marchan‐Rivadeneira et al . , Redonod et al ., ).…”

Section: Discussionmentioning

confidence: 99%

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Geographic variation of wing morphology of great fruit-eating bats (Artibeus lituratus): environmental, genetic and spatial correlates of phenotypic differences

Stevens

Johnson

McCulloch

2016

Biol. J. Linn. Soc.

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Responses of species to environmental gradients are important and frequent determinants of geographic phenotypic variation that can drive adaptive processes. Nonetheless, random genetic processes such as drift can also result in geographic variation in phenotypes, and should be evaluated before implicating selection as the process driving phenotypic change. We examined geographic variation in wing morphology of Artibeus lituratus among 18 different sites distributed across interior Atlantic Forest of Paraguay and Argentina. Moreover, we contrasted geographic variation with environmental, spatial, and genetic variation to test hypotheses related to selection and drift and their impacts on wing morphology. For A. lituratus distributed across interior Atlantic Forest, significant differences among sites characterized variation in wing morphology. Geographic variation was significantly related to climatic variables but not spatial or genetic distances. Such a pattern suggests that phenotypic variation is related to selection for particular environmental regimes, and not genetic drift. Four significant dimensions of phenotypic variation were determined. Three dimensions were related to variation among individuals in terms of wing tips, whereas one was related to overall body size. Wing tips are important for manoeuverability during flight and differences among sites likely reflect differences in forest and vegetation structure that must be managed during foraging. Although climate provides good surrogates for environmental variation, it is probably only an indirect cue of selection regimes that determine variation in wing morphology. Future studies should evaluate more direct environmental measures such as vegetation structure when attempting to interpret geographical variation in wing morphology.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Geographic variation of wing morphology of great fruit-eating bats (Artibeus lituratus): environmental, genetic and spatial correlates of phenotypic differences

Stevens

Johnson

McCulloch

2016

Biol. J. Linn. Soc.

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“…The priority effect could account for the low numbers of A. lituratus on St. Vincent and its absence from St. Lucia. Alternatively, the genetic data presented by P. Larsen et al (2013) indicate a very recent expansion event by A. lituratus throughout the Neotropics, and therefore this species may simply not had enough time to establish populations in the southern Lesser Antilles.…”

Section: Framework For Natural Dispersalmentioning

confidence: 99%

“…This is because the data supporting hybridization among species of Caribbean Artibeus spans decades of research and includes a number of in¬ dependent datasets (e.g., nuclear AFLPs, mitochondrial DNAgenotyping and sequencing, and morphometries) that collectively provide strong support for ongoing hybridization (see Artibeus jamaicensis x schwartzi species account above; Jones and Phillips 1976;Pumo et al 1988;Phillips et al 1989;. When examining the collective scope of these available datasets, alongside subfossil records from the Greater Antilles, genetic data from both Central and South American Artibeus populations, and an evolutionary timescale of diversification events within Artibeus (see P. Larsen et al ,2010Larsen et al ,2013, several critically im¬ portant patterns emerge with respect to the origin of the Artibeus hybrid swarm that centers on the islands of St. Lucia and St. Vincent in the southern Lesser Antilles. It is important to note that these patterns are consistent with recent hypotheses regarding rapid hybrid specia¬ tion on insular systems and they are intimately tied to and likely facilitated by aspects of classical island biogeography (P. Larsen et al 2010; Lamichhaney Table 5.…”

Section: Guild Compositionmentioning

confidence: 99%

“…Moreover, they provide a unique window into the evolution of genetic isolating mechanisms within stenodermatine bats, the most recently evolved and most speciose clade of the Phyllostomidae. This is because hybridization among Artibeus jamaicensis, A. planirostris, and A. schwartzi on islands in the southern Lesser Antilles indicates that ~4 million years of evolution was an insufficient amount of time to evolve complete genetic isolating mechanisms (occurring in the absence of allopatric reinforcement; see P. Larsen et al 2013).…”

Section: Guild Compositionmentioning

confidence: 99%

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Bats of Saint Lucia, Lesser Antilles

Pedersen¹,

Kwiecinski²,

Genoways³

et al. 2018

Special Publications - The Museum, Texas Tech University

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Eight species of bat have been previously recorded from the island of Saint Lu¬ cia: Noctilio leporinus, Monophyllus plethodon, Artibeus jamaicensis, Brachyphylla cavernarum, Ardops nichollsi, Sturnira paulsoni, Molossus molossus, and Tadarida brasiliensis. Herein, we add a ninth species to the fauna-Pteronotus davyi. These nine species represent nine genera from four families: Noctilionidae, Mormoopidae, Phyllostomidae, and Molossidae. This fauna includes four trophic guilds: N. lepori¬ nus (piscivore/insectivore), M. plethodon (nectarivore/pollenivore), A. jamaicensis x schwartzi, B. cavernarum, A. nichollsi, and S. paulsoni (frugivores), and P. davyi, M. molossus, and T. brasiliensis (insectivores). Based on its geographic location, the bat fauna of St. Lucia is enigmatic in regard to species dispersal along the Lesser Antillean archipelago. Natalus stramineus and M. martiniquensis are present on Martinique im¬ mediately to the north, and Micronycteris buriri, P. fuscus, Glossophaga longirostris, and Artibeus lituratus are found on St. Vincent directly to the south, yet these six species are conspicuously absent on St. Lucia. Moreover, the St. Lucian population of Artibeus resides at the northern edge of a fascinating hybrid zone involving three species, A. jamaicensis, A. planirostris, and A. schwartzi. In light of these observations, we provide a framework for analyzing the biogeographical patterns of the regional fauna to see if there is something about St. Lucia that is unique. We posit that a number of complex geological and ecological factors account for the depauperate bat fauna observed on the island as well as the formation of the Artibeus hybrid zone in the southern Lesser Antilles.

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