scholarly journals A dated phylogeny of Lardizabalaceae reveals an unusual long‐distance dispersal across the Pacific Ocean and the rapid rise of East Asian subtropical evergreen broadleaved forests in the late Miocene

Cladistics ◽  
2020 ◽  
Vol 36 (5) ◽  
pp. 447-457 ◽  
Author(s):  
Wei Wang ◽  
Xiao‐Guo Xiang ◽  
Kun‐Li Xiang ◽  
Rosa del C. Ortiz ◽  
Florian Jabbour ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Late Miocene ◽  
East Asian ◽  
Long Distance Dispersal ◽  
Rapid Rise ◽  
Long Distance ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Dated Phylogeny

scholarly journals Rare long-distance dispersal of a marine angiosperm across the Pacific Ocean

2018 ◽  
Vol 27 (4) ◽  
pp. 487-496 ◽  
Author(s):  
Timothy M. Smith ◽  
Paul H. York ◽  
Bernardo R. Broitman ◽  
Martin Thiel ◽  
Graeme C. Hays ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Long Distance Dispersal ◽  
Long Distance ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Marine Angiosperm

scholarly journals Genetic structure of the crown-of-thorns seastar in the Pacific Ocean, with focus on Guam

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1970 ◽  
Author(s):  
Sergio Tusso ◽  
Kerstin Morcinek ◽  
Catherine Vogler ◽  
Peter J. Schupp ◽  
Ciemon F. Caballes ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Pacific Ocean ◽  
Long Distance ◽  
The Past ◽  
The Pacific ◽  
Tropical Coral ◽  
Population Outbreaks ◽  
Geographical Regions ◽  
The Pacific Ocean ◽  
The Western Pacific

Population outbreaks of the corallivorous crown-of-thorns seastar (COTS),Acanthaster ‘planci’ L., are among the most important biological disturbances of tropical coral reefs. Over the past 50 years, several devastating outbreaks have been documented around Guam, an island in the western Pacific Ocean. Previous analyses have shown that in the Pacific Ocean, COTS larval dispersal may be geographically restricted to certain regions. Here, we assess the genetic structure of Pacific COTS populations and compared samples from around Guam with a number of distant localities in the Pacific Ocean, and focused on determining the degree of genetic structure among populations previously considered to be isolated. Using microsatellites, we document substantial genetic structure between 14 localities from different geographical regions in the Pacific Ocean. Populations from the 14 locations sampled were found to be structured in three significantly differentiated groups: (1) all locations immediately around Guam, as well as Kingman Reef and Swains Island; (2) Japan, Philippines, GBR and Vanuatu; and (3) Johnston Atoll, which was significantly different from all other localities. The lack of genetic differentiation between Guam and extremely distant populations from Kingman Reef and Swains Island suggests potential long-distance dispersal of COTS in the Pacific.

scholarly journals Putative long distance gene flow and evidence of secondary outbreaks of the Crown-of-Thorns Starfish in the Pacific Ocean

2015 ◽  
Author(s):  
Sergio Tusso ◽  
Kerstin Morcinek ◽  
Catherine Vogler ◽  
Peter J Schupp ◽  
Ciemon F Caballes ◽  
...  
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Pacific Ocean ◽  
Coral Reefs ◽  
Long Distance ◽  
The Pacific ◽  
Tropical Coral ◽  
Geographical Regions ◽  
The Pacific Ocean ◽  
Larval Dispersion

Population outbreaks of the corallivorous crown-of-thorns starfish (COTS), Acanthaster ‘planci’ L., are considered among the most important biological disturbances of tropical coral reefs. A local COTS outbreak, a “primary outbreak”, can lead to so-called “secondary outbreaks” in adjacent coral reefs due to increased larval release and subsequent dispersion. Previous analyses have shown that in the Pacific Ocean, this dispersion may be geographically restricted to certain regions. Guam, an island in the western Pacific region, suffered from several COTS outbreaks in the last 50 years, and in this study we test whether Guam is genetically connected with surrounding regions as a consequence of secondary outbreaks. We used microsatellites to measure gene flow and genetic structure among 14 localities in the Pacific Ocean. Our results show substantial genetic structure between geographical regions. There was, however, a lack of significant genetic differentiation between localities separated by large geographic distances (e.g., Guam, Kingman Reef and Johnston Atoll) – a finding consistent with the existence of contemporary long distance larval dispersion and the gradual erasing of ancestral signatures of divergence. Long distance larval dispersion suggests that secondary outbreaks occur across regions in the Pacific, and have occurred in the recent outbreaks in Guam. However, significant genetic differences among outbreak localities around the island of Guam were also detected, revealing the signature of both primary and secondary outbreaks. Our findings highlight the importance of addressing likely triggers of both primary and secondary outbreaks in conservation efforts and programs that strive to control the growth and spread of A. ‘planci’ in the Pacific Ocean.

Sharks and rays (Chondrichthyes, Elasmobranchii) from the late Miocene Gatun Formation of Panama

2013 ◽  
Vol 87 (5) ◽  
pp. 755-774 ◽  
Author(s):  
Catalina Pimiento ◽  
Gerardo González-Barba ◽  
Dana J. Ehret ◽  
Austin J. W. Hendy ◽  
Bruce J. MacFadden ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Shallow Water ◽  
Late Miocene ◽  
Habitat Preferences ◽  
Caribbean Sea ◽  
Shallow Waters ◽  
The Pacific ◽  
Dental Measurements ◽  
The Pacific Ocean ◽  
The Caribbean

The late Miocene Gatun Formation of northern Panama contains a highly diverse and well sampled fossil marine assemblage that occupied a shallow-water embayment close to a purported connection between the Pacific and Atlantic (Caribbean) oceans. However, the diverse chondrichthyan fauna has been poorly documented. Based on recent field discoveries and further analysis of existing collections, the chondrichthyan fauna from this unit comprises at least 26 taxa, of which four species are extinct today. The remaining portion of the total chondrichthyan biodiversity has affinities with modern taxa and is therefore comprised of long-lived species. Based on known records of the modern geographic distribution range of the Gatun chondrichthyans, the fauna has mixed biogeographic affinities suggesting that around 10 million yr ago, a connection likely occurred between the Pacific Ocean and the Caribbean Sea. Given the known habitat preferences for modern chondrichthyans, the Gatun fauna was primarily adapted to shallow waters within the neritic zone. Finally, comparisons of Gatun dental measurements with other faunas suggest that many of the taxa have an abundance of small individuals, in agreement with previous studies that proposed this area as a paleonursery habitat for the species Carcharocles megalodon.

scholarly journals Putative long distance gene flow of the Crown-of-Thorns Starfish in the Pacific Ocean

2015 ◽  
Author(s):  
Sergio Tusso ◽  
Kerstin Morcinek ◽  
Catherine Vogler ◽  
Peter J Schupp ◽  
Ciemon F Caballes ◽  
...  
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Pacific Ocean ◽  
Coral Reefs ◽  
Long Distance ◽  
The Pacific ◽  
Tropical Coral ◽  
Population Outbreaks ◽  
Geographical Regions ◽  
The Pacific Ocean

Population outbreaks of the corallivorous crown-of-thorns starfish (COTS), Acanthaster ‘planci’ L., are considered among the most important biological disturbances of tropical coral reefs. A local COTS outbreak, a “primary outbreak”, can lead to so-called “secondary outbreaks” in adjacent coral reefs due to increased larval release and subsequent dispersion. Previous analyses have shown that in the Pacific Ocean, this dispersion may be geographically restricted to certain regions. Guam, an island in the western Pacific region, suffered from several severe COTS outbreaks in the last 50 years, and in this study we tested whether Guam is genetically connected with surrounding long distant regions. We used microsatellites to measure gene flow and genetic structure among 14 localities in the Pacific Ocean. Our results show substantial genetic structure between geographical regions. There was, however, a lack of significant genetic differentiation between localities separated by large geographic distances (e.g., Guam, Kingman Reef and Johnston Atoll) – a finding consistent with the existence of contemporary long distance larval dispersion and the gradual erasing of ancestral signatures of divergence. Our findings highlight the importance of addressing likely triggers of both primary and secondary outbreaks in conservation efforts using highly variable markers that provide enough variance to infer contemporary patterns of gene-flow and allow to implement programs that strive to control the growth and spread of A. ‘planci’ in the Pacific Ocean.

On the Pacific Ocean regime shift

2001 ◽  
Vol 28 (19) ◽  
pp. 3721-3724
Author(s):  
Cathy Stephens
Keyword(s):  
Pacific Ocean ◽  
Regime Shift ◽  
The Pacific ◽  
The Pacific Ocean
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