scholarly journals Eggs survive through avian guts—A possible mechanism for transoceanic dispersal of flightless weevils

2021 ◽  
Author(s):  
Si‐Min Lin ◽  
Tsui‐Wen Li ◽  
Chia‐Hsin Liou ◽  
Ace Kevin S. Amarga ◽  
Analyn Cabras ◽  
...  
Keyword(s):  
Transoceanic Dispersal

scholarly journals Pre-Gondwanan-breakup origin ofBeauprea(Proteaceae) explains its historical presence in New Caledonia and New Zealand

2016 ◽  
Vol 2 (4) ◽  
pp. e1501648 ◽  
Author(s):  
Tianhua He ◽  
Byron B. Lamont ◽  
Bruno Fogliani
Keyword(s):  
Species Richness ◽  
New Zealand ◽  
New Caledonia ◽  
Phylogenetic Relations ◽  
Southeastern Australia ◽  
The Pacific ◽  
Extant Species ◽  
Historical Presence ◽  
Fossil Records ◽  
Transoceanic Dispersal

New Caledonia and New Zealand belong to the now largely submerged continent Zealandia. Their high levels of endemism and species richness are usually considered the result of transoceanic dispersal events followed by diversification after they re-emerged from the Pacific Ocean in the mid-Cenozoic. We explore the origin and evolutionary history ofBeauprea(Proteaceae), which is now endemic to New Caledonia but was once spread throughout eastern Gondwana, including New Zealand. We review the extensiveBeauprea-type pollen data in the fossil records and analyze the relationship of these fossil taxa to extant genera within Proteaceae. We further reconstruct the phylogenetic relations among nine extant species ofBeaupreaand estimate the age of theBeaupreaclade. By incorporating extinct taxa into theBeaupreaphylogenetic tree, we reconstruct the ancient distribution of this genus. Our analysis shows thatBeaupreaoriginated c. 88 Ma (million years ago) in Antarctica–Southeastern Australia and spread throughout Gondwana before its complete breakup. We propose thatBeauprea, already existing as two lineages, was carried with Zealandia when it separated from the rest of Gondwana c. 82 Ma, thus supporting an autochthonous origin forBeaupreaspecies now in New Caledonia and historically in New Zealand up to 1 Ma. We show that the presence ofBeaupreathrough transoceanic dispersal is implausible. This means that neither New Caledonia nor New Zealand has been entirely submerged since the Upper Cretaceous; thus, possible vicariance and allopatry must be taken into account when considering the high levels of endemism and species richness of these island groups.

Radiation and repeated transoceanic dispersal of Schoeneae (Cyperaceae) through the southern hemisphere

2013 ◽  
Vol 100 (12) ◽  
pp. 2494-2508 ◽  
Author(s):  
Jan-Adriaan Viljoen ◽  
A. Muthama Muasya ◽  
Russell L. Barrett ◽  
Jeremy J. Bruhl ◽  
Adele K. Gibbs ◽  
...  
Keyword(s):  
Southern Hemisphere ◽  
Transoceanic Dispersal

Transoceanic dispersal in the amphiantarctic genusDiscaria: An evaluation

1993 ◽  
Vol 31 (4) ◽  
pp. 427-430 ◽  
Author(s):  
Jonathan A. Keogh ◽  
Peter Bannister
Keyword(s):  
Transoceanic Dispersal

Historical transoceanic dispersal of a freshwater shrimp: the colonization of the South Pacific by the genus Paratya (Atyidae)

2005 ◽  
Vol 32 (4) ◽  
pp. 581-593 ◽  
Author(s):  
Timothy J. Page ◽  
Andrew M. Baker ◽  
Benjamin D. Cook ◽  
Jane M. Hughes
Keyword(s):  
South Pacific ◽  
Freshwater Shrimp ◽  
The South ◽  
Transoceanic Dispersal

Evolution and biogeography ofLyalliaandHectorella(Portulacaceae), geographically isolated sisters from the Southern Hemisphere

2007 ◽  
Vol 19 (4) ◽  
pp. 417-426 ◽  
Author(s):  
Steven J. Wagstaff ◽  
Françoise Hennion
Keyword(s):  
New Zealand ◽  
Southern Hemisphere ◽  
Common Ancestor ◽  
Growth Habit ◽  
Intergenic Spacer ◽  
Plant Evolution ◽  
Late Tertiary ◽  
Close Relationship ◽  
Divergence Estimates ◽  
Transoceanic Dispersal

AbstractThe Southern Hemisphere contains many monotypic taxa, for which phylogenetic relationships are important to illuminate biogeographical history. The monotypic genusLyalliais endemic to the sub-Antarctic Iles Kerguelen. A close relationship with another monotypic taxon, the New Zealand endemicHectorella, was proposed. They share a dense cushion growth habit with small coriaceous leaves that lack stipules. The solitary flowers are bicarpellate with two sepals, 4–5 petals, 3–5 stamens and a bifid style. The fruit is an indehiscent capsule with 1–5 seeds. The flowers ofLyallia kerguelensisare hermaphroditic with four petals and three stamens whereas the flowers ofHectorella caespitosaare female, male or hermaphroditic, with five petals and five stamens.Lyallia kerguelensisis rare on Kerguelen, whereasHectorella caespitosais confined to the South Island of New Zealand. Our phylogenetic analysis oftrnK/matK intergenic spacer andrbcL sequences provides evidence supporting a close relationship betweenLyalliaandHectorella. The two species form a well-supported clade that is nested within the Portulacaceae. Divergence estimates suggest they shared a common ancestor during the late Tertiary long after the fragmentation of Gondwana. Such relationships underscore the importance of transoceanic dispersal and extinctions for plant evolution in the Southern Hemisphere.

scholarly journals The point on Opaliopsis atlantis (Gastropoda: Epitoniidae) distribution: new data from the Mediterranean and implications

2020 ◽  
Vol 60 ◽  
pp. e20206059
Author(s):  
Salvatore Giacobbe ◽  
Walter Renda
Keyword(s):  
Mediterranean Sea ◽  
Deep Water ◽  
Potential Role ◽  
Geographic Range ◽  
Stepping Stones ◽  
Central Mediterranean ◽  
Deep Water Species ◽  
Transoceanic Dispersal ◽  
Water Species

Specimens of the rare amphi-Atlantic epitoniid Opaliopsis atlantis have been recorded in the Strait of Messina (central Mediterranean) from a hydrozoan stylasterid-rich habitat. The record, which adds a new site to the sporadic occurrences of this prevalently deep-water species, may be considered the first contextualized report from Mediterranean Sea. Opaliopsis atlantis displays a planktotrophic larval development functional for long-range colonization of favorable habitats. Its discontinuous distribution all over its broad geographic range highlights the potential role of Atlantic seamounts as stepping-stones for transoceanic dispersal. Although no conclusive information is yet available upon the feeding requirements of O. atlantis all over its range, we suggest that this cnidarian-ectoparasitic prosobranch could adapt to different hosts, as a strategy that may enhance its wide biogeographic distribution.

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