sweepstakes dispersal|Extant species fail to estimate ancestral geographical

sweepstakes dispersal,*sweepstakes dispersal route* A term coined by G. G. Simpson [1] in 1940 to describe a possible route of faunal interchange which is unlikely to be used by most animals, .

Overview. sweepstakes route. Quick Reference. A potential migration pathway along which species disperse with difficulty. Chance events play a large role in colonization of .Aim To investigate the validity of Simpson's model of sweepstakes dispersal, particularly as it applies to the colonization of Madagascar by African .

Ali and Huber ( 2010) proposed that sweepstakes dispersal from Africa to Madagascar was expedited during the Palaeogene, when both landmasses were approximately 10–15° .Extant species fail to estimate ancestral geographical Ali and Huber ( 2010) proposed that sweepstakes dispersal from Africa to Madagascar was expedited during the Palaeogene, when both landmasses were approximately 10–15° . A clade’s evolutionary history is shaped, in part, by geographical range expansion, sweepstakes dispersal and local extinction. A rigorous understanding of historical biogeography may therefore yield insights into .

Natural rafting may explain the dispersal of poikilotherms with low metabolic rates and low resource requirements that could withstand trans-oceanic crossings, but explaining the .

sweepstakes dispersal Abstract. A long-standing paradox of marine populations is chaotic genetic patchiness (CGP), temporally unstable patterns of genetic differentiation that occur below the . Abstract. Aim To investigate the validity of Simpson's model of sweepstakes dispersal, particularly as it applies to the colonization of Madagascar by African mammals. .Here, we study their biogeographic history of continental dispersal events and test whether these are associated with increases in lineage diversification. LOCATION: Asia, India, Africa .sweepstake dispersal route. A term coined by G. G. *Simpson in 1940 to describe a possible route of faunal interchange which is . Access to the complete content on Oxford Reference .

sweepstakes dispersal Extant species fail to estimate ancestral geographical PDF | Dispersal is a process common to all organisms, and it is highly variable in details among organisms and across space and time. . Sweepstake routes in which crossings occur as a chance . Although such dispersal should result in high gene flow over broad spatial scales. Skip to Article Content ; Skip to Article Information; Search within. Search term . Unexpected collective larval dispersal but little support for sweepstakes reproductive success in the highly dispersive brooding mollusc Crepidula fornicata. Florentine Riquet .

sweepstakes dispersal route in A Dictionary of Earth Sciences (3 ed.) sweepstakes dispersal route A in A Dictionary of Zoology (3 ed.) sweepstakes route in A Dictionary of Genetics (7 ed.) View overview page for this topic

"sweepstake dispersal route" published on by Oxford University Press. A term coined by G. G. *Simpson in 1940 to describe a possible route of faunal interchange which is unlikely to be used by most animals, but which will, by chance, be used by some. It requires a major barrier that is occasionally crossed.

Dispersal routes from South America to Africa consider: (1) an island-hopping, or stepping-stone route; (2) a single-step route dispersal from South America to Africa; and (3) a sweepstakes route. It is postulated here that the first route would have involved evolutionary processes in taxa whereas the other two routes, because of the relative .sweepstakes dispersal in the context of transcontinental and transoceanic dispersal) results in a significant separ-ation between the new and original range [10,11]. Such freak dispersal allows areas to be colonised that are far beyond those typically reached over ecological timescales (Figure 1d). The likelihood of symbionts moving concomi-

Next, we investigated the importance of collective dispersal for detecting sweepstake signatures. We simulated a generalized scenario involving five populations including a “source” and a “sink” population. Reproduction in the source population followed the sweepstake model described above, with F = 1, K = 1000, and St = 10 .

DOI: 10.1111/jbi.14781 Corpus ID: 266644377; Dispersal sweepstakes: Biotic interchange propelled air‐breathing fishes across the globe @article{Harrington2023DispersalSB, title={Dispersal sweepstakes: Biotic interchange propelled air‐breathing fishes across the globe}, author={Richard C. Harrington and M A Kolmann and Julia J. Day and Brant C. .

sweepstake a form of gambling, especially on horse races, in which all the stakes are divided among the winners; the word originally (from the late 14th century) meant someone who ‘sweeps’, or takes the whole of, stakes in a game; in figurative usage, someone who took or appropriated everything. From the 15th to the 17th century, Sweepstake was often used as a .

• Sweepstakes dispersal – Definition: great fortune to those lineages able to overcome dispersal barriers • Rapid & prolific speciation with successful colonization Diversity Filters • Definition – No clear line, only a progressive reduction in diversity • . Sweepstakes dispersal by various terrestrial mammal clades, especially rodents and primates, was facilitated by Eocene greenhouse climatic conditions, which promoted extreme precipitation events and frequent flooding of major river drainages. Previous article in issue; Next article in issue; Keywords. Eocene.

The only viable hypotheses that remain entail sweepstakes dispersal across marine barriers by early monkeys on natural rafts. Early anthropoids and certain Asian rodent clades seem to have been especially adept at accomplishing sweepstakes dispersal, particularly during the Eocene, although this process has classically been envisioned as highly .

Much like island colonization , explicit modelling of sweepstakes dispersal in addition to range expansion may be more appropriate for continental-level biogeographic analyses, especially in deep time. .In many marine invertebrates, long-distance dispersal is achieved during an extended pelagic larval phase. Although such dispersal should result in high gene flow over broad spatial scales, fine-scale genetic structure has often been reported, a pattern attributed to interfamilial variance in reproductive success and limited homogenization during dispersal. Successful “sweepstakes dispersal” , which carries seeds across oceans, may occur once during the course of a species’ lifespan. Sweepstakes dispersal can be inferred from DNA sequence phylogeography and molecular clock methods . If the genetic divergence between disjunct populations is much less than expected under the time scale implied .

While sweepstakes dispersal, based on irregular, stochastic opportunities, predicts a random model of colonization, Figure 1 indicates a more constrained pattern. The iguanas (Opluridae) and river turtles (Podecnemididae) are likely to have been present on the Gondwanan supercontinent, alongside the extinct Cretaceous fauna (gondwanatheres .

Sweepstakes dispersal by various terrestrial mammal clades, especially rodents and primates, was facilitated by Eocene greenhouse climatic conditions, which promoted extreme precipitation events and frequent flooding of major river drainages. Keywords: Eocene Omomyidae Sweepstakes dispersal Pontides Orhaniye Basin Turkey 1. Introductionsweepstakes dispersal, followed by in situ evolution and diversification (Carlquist, 1974; Cowie & Holland, 2006). Early botanists and naturalists held a diversity of views on origins of the Hawaiian flora and differed about the importance of long-distance dispersal and particular source areas as well as the age and timing of evolution and .

sweepstakes dispersal|Extant species fail to estimate ancestral geographical

sweepstakes dispersal|Extant species fail to estimate ancestral geographical .

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