scholarly journals Pleistocene aridification underlies the evolutionary history of the Caribbean endemic, insular, giant Consolea (Opuntioideae)

2021 ◽  
Vol 108 (2) ◽  
pp. 200-215 ◽  
Author(s):  
Lucas C. Majure ◽  
Duniel Barrios ◽  
Edgardo Díaz ◽  
Bethany A. Zumwalde ◽  
Weston Testo ◽  
...  
Keyword(s):  
Evolutionary History ◽  
History Of ◽  
The Caribbean

scholarly journals Eggs of echinoids separated by the Isthmus of Panama harbor divergent microbiota

2020 ◽  
Vol 648 ◽  
pp. 169-177
Author(s):  
TJ Carrier ◽  
HA Lessios ◽  
AM Reitzel
Keyword(s):  
Community Composition ◽  
Bacterial Communities ◽  
Evolutionary History ◽  
Isthmus Of Panama ◽  
The Pacific ◽  
Species Pairs ◽  
History Of ◽  
The Pacific Ocean ◽  
The Caribbean ◽  
Bodies Of Water

Relationships between animals and their associated microbiota are dependent on both the evolutionary history of the host and on the environment. The majority of studies tend to focus on either one of these factors but rarely consider how both determine the community composition of the associated microbiota. One ‘natural experiment’ to test how evolutionary history, shared environments, and the interaction between these factors drive community composition is to compare geminate species pairs. Echinoids separated by the Isthmus of Panama are suitable for this comparison due to their known evolutionary history and differences in the oceanographic characteristics of the Caribbean Sea and the Pacific Ocean. By comparing the bacterial communities of the eggs of Echinometra and Diadema geminate species pairs, we show that each pair of geminate species associates with a distinct bacterial community in a pattern consistent with phylosymbiosis, and that the interaction between the evolutionary history of the host and the environment best explains differences in these communities. Moreover, we found that the relative abundance of particular bacterial taxa differed considerably between the 2 bodies of water and that the 2 Caribbean Echinometra species were dominated by unclassified bacterial taxa within the phototrophic Oxyphotobacteria. Taken together, data presented here support the hypothesis that the bacterial communities associated with geminate species are another characteristic of these species that have diverged in ~2.8 million years of isolation.

scholarly journals The evolutionary history of the Caribbean magnolias (Magnoliaceae): testing species delimitations and biogeographical hypotheses using molecular data

2021 ◽  
pp. 107359
Author(s):  
Emily Veltjen ◽  
Ernesto Testé ◽  
Alejandro Palmarola Bejerano ◽  
Pieter Asselman ◽  
Majela Hernández Rodríguez ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Molecular Data ◽  
History Of ◽  
The Caribbean

scholarly journals Collagen Sequence Analysis Reveals Evolutionary History of Extinct West Indies Nesophontes (Island-Shrews)

2020 ◽  
Vol 37 (10) ◽  
pp. 2931-2943 ◽  
Author(s):  
Michael Buckley ◽  
Virginia L Harvey ◽  
Johanset Orihuela ◽  
Alexis M Mychajliw ◽  
Joseph N Keating ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Greater Antilles ◽  
Cayman Islands ◽  
Geographical Isolation ◽  
Sequence Analyses ◽  
Evolutionary Patterns ◽  
Caribbean Islands ◽  
The Past ◽  
History Of ◽  
The Caribbean

Abstract Ancient biomolecule analyses are proving increasingly useful in the study of evolutionary patterns, including extinct organisms. Proteomic sequencing techniques complement genomic approaches, having the potential to examine lineages further back in time than achievable using ancient DNA, given the less stringent preservation requirements. In this study, we demonstrate the ability to use collagen sequence analyses via proteomics to assist species delimitation as a foundation for informing evolutionary patterns. We uncover biogeographic information of an enigmatic and recently extinct lineage of Nesophontes across their range on the Caribbean islands. First, evolutionary relationships reconstructed from collagen sequences reaffirm the affinity of Nesophontes and Solenodon as sister taxa within Solenodonota. This relationship helps lay the foundation for testing geographical isolation hypotheses across islands within the Greater Antilles, including movement from Cuba toward Hispaniola. Second, our results are consistent with Cuba having just two species of Nesophontes (N. micrus and N. major) that exhibit intrapopulation morphological variation. Finally, analysis of the recently described species from the Cayman Islands (N. hemicingulus) indicates that it is a closer relative to N. major rather than N. micrus as previously speculated. This proteomic sequencing improves our understanding of the origin, evolution, and distribution of this extinct mammal lineage, particularly with respect to the approximate timing of speciation. Such knowledge is vital for this biodiversity hotspot, where the magnitude of recent extinctions may obscure true estimates of species richness in the past.

Evolutionary History Drives Biogeographic Patterns of Coral Reef Resilience

BioScience ◽  
2020 ◽  
Author(s):  
George Roff
Keyword(s):  
Coral Reef ◽  
Evolutionary History ◽  
Rapid Recovery ◽  
Growth Forms ◽  
Biogeographic Patterns ◽  
Isthmus Of Panama ◽  
Wide Range ◽  
Caribbean Coral Reef ◽  
History Of ◽  
The Caribbean

Abstract Modern-day Indo-Pacific coral reefs are characterized by rapid recovery driven by pulses of coral recruitment, but Caribbean reefs exhibit low rates of recruitment and poor recovery following a wide range of disturbance events. The contrasting evolutionary history of coral taxa offers key insight into biogeographic patterns of coral resilience. Following the closure of the Isthmus of Panama approximately 2.8 million years ago, widespread extinction of Caribbean corals led to an evolutionary bottleneck that favored large and long-lived species with a relatively high reliance on asexual versus sexual reproduction. In contrast, adaptive radiation led to the evolution of superrecruiting tabular, digitate, and corymbose corals that drive the rapid recovery of modern-day Indo-Pacific reefs following disturbance. The dominance of branching growth forms and evolutionary absence of superrecruiting growth forms throughout the entire evolutionary history of the Caribbean (approximately 38 million years ago to present) may explain the exceptionally high recruitment rates on modern-day Indo-Pacific reefs and low historical recruitment on Caribbean reefs. The evolutionary history of the Caribbean coral reef-building taxa implies that, even with a reversal of ecosystem state, widespread recovery of Caribbean reefs may be limited.

scholarly journals Divergent microbiota of echinoid eggs separated by the Isthmus of Panama

2020 ◽  
Author(s):  
Tyler J. Carrier ◽  
Harilaos A. Lessios ◽  
Adam M. Reitzel
Keyword(s):  
Community Composition ◽  
Bacterial Communities ◽  
Evolutionary History ◽  
Natural Experiment ◽  
Caribbean Sea ◽  
Associated Bacteria ◽  
Isthmus Of Panama ◽  
Species Pairs ◽  
History Of ◽  
The Caribbean

AbstractRelationships between animals and their associated microbiota is dependent on the evolutionary history of the host and on the environment. The majority of studies tend to focus on one of these factors and rarely consider how both determine the community composition of the associated bacteria. One “natural experiment” to test how evolutionary history, shared environments, and the interaction between these factors drive community composition is to compare geminate species pairs. Echinoids separated by the Isthmus of Panama are suitable for this comparison due to the known evolutionary history and differences in oceanographic characteristics of the Caribbean Sea and Pacific Ocean. By comparing the egg-associated microbiota for the Echinometra and Diadema geminate species pairs, we show that both pairs of geminate species associate with distinct bacterial communities in patterns consistent with phylosymbiosis, and that the interaction between the evolutionary history of the host and the environment best explain differences in these communities. Moreover, we find that particular microbial taxa differed considerably between, but not within, oceans and that the microbiota of the two Caribbean Echinometra species were dominated by the phototrophic Oxyphotobacteria.

Genetic connectivity of a coral reef ecosystem predator: the population genetic structure and evolutionary history of the Caribbean reef shark (Carcharhinus perezi )

2017 ◽  
Vol 44 (11) ◽  
pp. 2488-2500 ◽  
Author(s):  
Andrea M. Bernard ◽  
Rebekah L. Horn ◽  
Demian D. Chapman ◽  
Kevin A. Feldheim ◽  
Ricardo C. Garla ◽  
...  
Keyword(s):  
Coral Reef ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Evolutionary History ◽  
Genetic Connectivity ◽  
Coral Reef Ecosystem ◽  
History Of ◽  
The Caribbean ◽  
Reef Ecosystem

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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