Uncorrelated mistletoe infection patterns and mating success with local host specialization in Psittacanthus calyculatus (Loranthaceae)

Pérez-Crespo, María José; Lara, Carlos; Ornelas, Juan Francisco

doi:10.1007/s10682-016-9866-z

Cited by 14 publications

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“…Interestingly, range expansions of bee hummingbirds in North America during the Pliocene seem to correspond to Pliocene divergences within the hummingbird-pollinated Psittacanthus mistletoes apparently linked to habitat shifts [ 82 , 83 ]. For instance, the ages of the Calothorax sheartails, with a stem age of 3.6 MYA (95% HPD 5.11–2.39 MYA) and a crown age of 2.4 MYA (95% HPD 3.61–1.41 MYA), coincide with the timing of divergence events of the Psittacanthus mistletoes they currently pollinate ( P. auriculatus distributed in the xeric areas of Oaxaca and P. calyculatus distributed in pine-oak forests along the Trans-Mexican Volcanic Belt; [ 85 – 87 ]), with a stem age of 3.1 MYA and a crown age of 1.8 MYA [ 82 , 83 ]. The ages of Calypte costae , with a stem age of 3.1 MYA (95% HPD 4.49–1.78 MYA) and a crown age of 1.7 MYA (95% HPD 2.58–0.91 MYA), coincide with the timing of divergence events of the Psittacanthus mistletoes they currently pollinate in the Sonoran Desert, P. sonorae , with a stem age of 4.8 MYA and a crown age of 0.3 MYA [ 82 , 83 ].…”

Section: Discussionmentioning

confidence: 99%

The conquering of North America: dated phylogenetic and biogeographic inference of migratory behavior in bee hummingbirds

Licona-Vera

Ornelas

2017

BMC Evol Biol

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BackgroundGeographical and temporal patterns of diversification in bee hummingbirds (Mellisugini) were assessed with respect to the evolution of migration, critical for colonization of North America. We generated a dated multilocus phylogeny of the Mellisugini based on a dense sampling using Bayesian inference, maximum-likelihood and maximum parsimony methods, and reconstructed the ancestral states of distributional areas in a Bayesian framework and migratory behavior using maximum parsimony, maximum-likelihood and re-rooting methods.ResultsAll phylogenetic analyses confirmed monophyly of the Mellisugini and the inclusion of Atthis, Calothorax, Doricha, Eulidia, Mellisuga, Microstilbon, Myrmia, Tilmatura, and Thaumastura. Mellisugini consists of two clades: (1) South American species (including Tilmatura dupontii), and (2) species distributed in North and Central America and the Caribbean islands. The second clade consists of four subclades: Mexican (Calothorax, Doricha) and Caribbean (Archilochus, Calliphlox, Mellisuga) sheartails, Calypte, and Selasphorus (incl. Atthis). Coalescent-based dating places the origin of the Mellisugini in the mid-to-late Miocene, with crown ages of most subclades in the early Pliocene, and subsequent species splits in the Pleistocene. Bee hummingbirds reached western North America by the end of the Miocene and the ancestral mellisuginid (bee hummingbirds) was reconstructed as sedentary, with four independent gains of migratory behavior during the evolution of the Mellisugini.ConclusionsEarly colonization of North America and subsequent evolution of migration best explained biogeographic and diversification patterns within the Mellisugini. The repeated evolution of long-distance migration by different lineages was critical for the colonization of North America, contributing to the radiation of bee hummingbirds. Comparative phylogeography is needed to test whether the repeated evolution of migration resulted from northward expansion of southern sedentary populations.Electronic supplementary materialThe online version of this article (doi:10.1186/s12862-017-0980-5) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

The conquering of North America: dated phylogenetic and biogeographic inference of migratory behavior in bee hummingbirds

Licona-Vera

Ornelas

2017

BMC Evol Biol

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“…According to Kuijt (), it commonly parasitizes Quercus along the TMVB, but it has a broad range of hosts ( c . 50 host tree species of diverse angiosperm families), including non‐native tree species in agricultural landscapes or near cities (Pérez‐Crespo, Lara, & Ornelas, and references therein). Although cross‐seed inoculation experiments have shown local adaptation to their hosts (Lara et al., ), the broad host range of P. calyculatus suggests low host specificity and, consequently, the distribution of genetic variation in this species is unlikely influenced by the distribution of potential host species at a larger geographical scale (Díaz Infante et al., ; Ornelas et al., ).…”

Section: Methodsmentioning

confidence: 99%

Phylogeography and population differentiation in the Psittacanthus calyculatus (Loranthaceae) mistletoe: a complex scenario of climate–volcanism interaction along the Trans‐Mexican Volcanic Belt

Pérez-Crespo

Ornelas

González‐Rodríguez³

et al. 2017

Journal of Biogeography

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Aim: The formation of the Trans-Mexican Volcanic Belt (TMVB) played an important role in driving inter-and intraspecific diversification at high elevations. However, Pleistocene climate changes and ecological factors might also contribute to plant genetic structuring along the volcanic belt. Here, we analysed phylogeographical patterns of the parrot-mistletoe Psittacanthus calyculatus to determine the relative contribution of these different factors. Location: Trans-Mexican Volcanic Belt. Methods: Using nuclear and chloroplast DNA sequence data for 370 individuals, we investigate the genetic differentiation of 35 populations across the species range.We conducted phylogenetic, population and spatial genetic analyses of P. calyculatus sequences along with ecological niche modelling and Bayesian inference methods to gain insight into the structuring of genetic variation of these populations.Results: Our analyses revealed population structure with three genetic groups corresponding to individuals from Oaxaca and those from the central-eastern and western TMVB regions. A significant genetic signal of demographic expansion, an eastto-west expansion predicted by species distribution modelling, and approximate Bayesian computation analyses strongly supported a scenario of habitat isolation and invasion of TMVB by P. calyculatus during the late-Pleistocene.Main conclusions: The genetic differentiation of P. calyculatus may be explained by the combined effects of (1) geographical isolation linked to the effects of the glacial/interglacial cycles and environmental factors, driving genetic differentiation from congeners into more xeric vegetation and (2) the invasion of TMVB from east to west, suggesting a role for both colonization and glacial/interglacial cycles models.

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“…However, prolonged and intense drought events are expected to have more drastic consequences because the mistletoe will ensure its water supply by draining the host plant, although killing the host will compromise mistletoe survival as well (Heide-Jørgensen 2008, Reblin and Logan 2015). This would limit, or even disrupt, mistletoe population reproduction, which might have direct effects on the decline of their associated pollinator and frugivore species, leading to indirect effects on other plant species sharing the same mutualists (Carlo and Aukema 2005, Perez-Crespo et al 2016a). This scenario may be more critical in semi-arid (e.g., Guerrero et al 2012) and insular (e.g., Kelly et al 2004Kelly et al , 2007 environments, where water availability and functional redundancy are rather limited.…”

Section: Introductionmentioning

confidence: 99%

The cascade impacts of climate change could threaten key ecological interactions

et al. 2018

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Climate change is triggering ecological responses all over the world as a result of frequent, prolonged droughts. It could also affect ecological interactions, particularly pollination and seed dispersal, which play a key role in plant reproduction. We used a tripartite interaction with a mistletoe, its pollinator and its disperser animals to gain insight into this issue. We studied flower and fruit production, and visitation rates during average (2012) and dry (2015) austral summers. Drought in our study area affected precipitation and soil water availability. Although pollinator visits did not significantly differ in these summers, during the dry summer flower and fruit production experienced an important decline, as did seed disperser visits. Also, mistletoe mortality increased from 12% in 2012 to 23% in 2015. This empirical evidence suggests that the cascade effects of climate change may indirectly be hindering ecological interactions in the Valdivian temperate rainforest ecosystem we studied. Long‐term research is essential to provide the knowledge necessary to understand how key ecological processes may be affected in a changing world.

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Uncorrelated mistletoe infection patterns and mating success with local host specialization in Psittacanthus calyculatus (Loranthaceae)

Cited by 14 publications

References 84 publications

The conquering of North America: dated phylogenetic and biogeographic inference of migratory behavior in bee hummingbirds

The conquering of North America: dated phylogenetic and biogeographic inference of migratory behavior in bee hummingbirds

Phylogeography and population differentiation in the Psittacanthus calyculatus (Loranthaceae) mistletoe: a complex scenario of climate–volcanism interaction along the Trans‐Mexican Volcanic Belt

The cascade impacts of climate change could threaten key ecological interactions

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