Otoba vespertilio (Myristicaceae), una especie nueva de Mesoamérica

Santamaría-Aguilar, Daniel; Jiménez, José Esteban; Aguilar, Reinaldo

doi:10.1007/s12228-019-09585-w

Cited by 3 publications

(8 citation statements)

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“…The limited movement of Otoba is likely explained by poor dispersal ability— a pattern echoed across the phylogeny of Myristicaceae, in which long-distance dispersal played little to no role in its current distribution (Fig 3). Otoba ’s relatively large seeds, which are dispersed birds, primates, and bats (Giraldo et al, 2007; Melo et al, 2009; Nuñez-Iturri & Howe, 2007; Santamaría-Aguilar et al, 2019), make dispersal events over water barriers or large stretches of unsuitable terrestrial habitat uncommon compared to groups that are dispersed by wind (Pérez-Escobar et al, 2017) or migratory passerine birds (Nathan et al, 2008). It is further documented that dispersal ability in tropical trees is known to be negatively impacted by seed size (Muller-Landau et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…Since O. novogranatensis was recovered as polyphyletic, the state for the broadly described O. novograntensis was applied to both O. novogranatensis populations in our tree, with the exception of aril color, which we know differs across inferred lineages (see (Santamaría-Aguilar, Jiménez, et al, 2019). Ancestral characters were estimated using the R package phytools (Revell, 2012); the ace() and the fastAnc() functions were used for discrete and continuous traits, respectively.…”

Section: Ancestral State Reconstructionmentioning

confidence: 99%

“…The observed biogeography patterns are likely explained by dispersal limitation. Otoba's relatively large seeds are dispersed birds, primates, and bats (Giraldo et al, 2007;Nuñez-Iturri and Howe, 2007;Melo et al, 2009;Santamaría-Aguilar, Jiménez, et al, 2019), with a potential role of small mammals as secondary seed dispersers (Forget et al, 2002). These groups can often be dispersal limited, including across riverine barriers and fragmented habitats (Eberhard and Bermingham, 2005;Ripperger et al, 2013;Boubli et al, 2015) (though this is not always the case; see (Holbrook, 2011).…”

Section: Landscape Evolution and Dispersal Limitation Drive Biogeogramentioning

confidence: 99%

“…1), a nutmeg relative that occurs throughout the humid northern Neotropics. Otoba ’s twelve species are distributed from Nicaragua to Brazil, with the highest species richness in the Chocó and western Amazonia (Santamaría-Aguilar, Jiménez, and Aguilar 2019). They grow in many mesic habitats, including lowland tropical rainforest (both terra firme and floodplain), premontane forest, and cloud forest, spanning a broad elevational range (i.e., 0–2500 m) that includes the highest elevation occurrence in Myristicaceae (Jaramillo-Vivanco and Balslev 2020).…”

Section: Figmentioning

confidence: 99%

“…We aim to study the impact of Neotropical landscape change on lineage evolution in a nutmeg relative, Otoba (Myristicaceae). Its 10 species are distributed from Nicaragua to Brazil, with the highest species richness in low Andean montane forests and lowland rainforests, especially of the Chocó region and western Amazonia (Santamaría-Aguilar et al, 2019). Otoba occurs in many different habitat types in the northern Neotropics, and spans a broad elevational range that includes the highest elevation occurrence in Myristicaceae (Jaramillo-Vivanco & Balslev, 2020).…”

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Niche evolution of the Neotropical tree genusOtobain the context of global biogeography of the nutmeg family, Myristicaceae

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Santamaría-Aguilar

Singletary

et al. 2020

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Abstract•Premise of the studyUniversal probesets for targeted sequence capture have facilitated phylogenomic research into diverse plant groups with limited genomic resources, including from low-quality DNA typical of herbarium specimens. Here, we leverage the Angiosperms353 loci to infer the first phylogeny of Otoba (Myristicaceae), a Neotropical tree genus that is ecologically dominant in low-to-mid elevation wet forests, exclusively from herbarium specimens.•MethodsWe use a combination of Angiosperms353 loci, obtained via targeted sequence capture, and plastid sequences to resolve the phylogeny of Otoba using concatenated and species tree methods. We subsequently use this phylogeny to infer biogeography and trait evolution using phylogenetic comparative methods.•Key resultsRecovery success of loci is correlated with age of herbarium specimens and average annual precipitation. Despite a large amount of missing data, we resolve the phylogeny of Otoba into three major subclades, each structured by geography. We show that Otoba’s crown radiation occurred on the western slopes of the Andes in the late Miocene, and from there, migrated into Central America at least twice; the genus was only able to cross to the eastern slopes of the Andes a single time. Trait evolution has been dynamic across vegetative and reproductive traits, with multiple origins of most discrete traits investigated, including ecologically important aril color.•ConclusionsOtoba is recent, rapid radiation whose evolution is tied to landscape change, including Andean uplift, in the northern Neotropics. Its dynamic morphological evolution is consistent with sorting of ancestral traits during recent speciation events. In one of the first herbariomic studies exclusively using herbarium tissue from specimens collected in the wet tropics, this study demonstrates the promise of Angiosperms353 loci in resolving shallow species-level relationships, even from low-quality DNA.

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Section: Discussionmentioning

confidence: 99%

Section: Ancestral State Reconstructionmentioning

confidence: 99%

Section: Landscape Evolution and Dispersal Limitation Drive Biogeogramentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Niche evolution of the Neotropical tree genusOtobain the context of global biogeography of the nutmeg family, Myristicaceae

Frost

Santamaría-Aguilar

Singletary

et al. 2020

Preprint

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Neotropical niche evolution of Otoba trees in the context of global biogeography of the nutmeg family

Frost

Santamaría-Aguilar

Singletary

et al. 2021

Journal of Biogeography

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Aim Plant distributions are influenced by species’ ability to colonize new areas via long‐distance dispersal and propensity to adapt to new environments via niche evolution. We use otobas, a clade of ecologically dominant trees found in low‐to mid‐elevation wet forests, as a system to understand the relative importance of these processes within the Neotropics. Location Neotropics and global. Taxon Otoba and entire Myristicaceae. Methods We resolve the first phylogeny of Otoba the Angiosperms353 loci and plastome sequences from 13 accessions representing seven species. We pair this with the most densely sampled phylogeny of Myristicaceae to date, inferred using publicly available plastid data. We then use environmental niche modelling, biogeographical reconstruction, phylogenetic principle components analysis and Ornstein–Uhlenbeck models to infer biogeography and examine patterns of niche evolution. Results Myristicaceae has an Old World origin, with a single expansion into the Americas. Divergence dates, fossil evidence and a notable lack of long‐distance dispersal are consistent with a Boreotropical origin of Neotropical Myristicaceae. Mirroring the rarity of dispersal at the family level, Otoba's biogeography is marked by few biogeographical events: two expansions into Central America from a South American ancestor and a single dispersal event across the Andes. This limited movement contrasts with rapid climatic niche evolution, typically occurring across geographically proximate habitats. Main conclusion Contrasting with previous studies, long‐distance dispersal does not need to be invoked to explain the pantropical distribution of Myristicaceae, nor the biogeography of Otoba. This likely results from the family's relatively large seeds that are dispersed by large‐bodied vertebrates. Instead, rapid niche evolution in Otoba has facilitated its occurrence throughout mesic habitats of the northern Neotropics, including the Amazon rainforest and Andean montane forests. Otoba adds to a growing group of Neotropical plant clades in which climate adaptation following local migration is common, implying an important role of niche evolution in the assembly of the Neotropical flora.

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Two new species of Otoba (Myristicaceae) from Colombia

Santamaría-Aguilar¹,

Lagomarsino²

2021

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Otoba is the third largest genus of Myristicaceae in the Neotropics with 12 species, nine of them native to Colombia. Two new species from the department of Antioquia, O. scottmoriisp. nov. and O. squamosasp. nov., are described and illustrated. Otoba scottmorii occurs in humid, lowland forests, while O. squamosa occurs in premontane forest. Previously, Otoba scottmorii was confused with O. acuminata (which here is considered restricted to Costa Rica and Panama), while O. squamosa was confused with O. gordoniifolia. The similarities and differences between these and other species are discussed.

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Otoba vespertilio (Myristicaceae), una especie nueva de Mesoamérica

Cited by 3 publications

References 8 publications

Niche evolution of the Neotropical tree genusOtobain the context of global biogeography of the nutmeg family, Myristicaceae

Niche evolution of the Neotropical tree genusOtobain the context of global biogeography of the nutmeg family, Myristicaceae

Neotropical niche evolution of Otoba trees in the context of global biogeography of the nutmeg family

Two new species of Otoba (Myristicaceae) from Colombia

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