Genetic bottlenecks in time and space: reconstructing invasions from contemporary and historical collections

Herbarium accession data offer a useful historical botanical perspective and have been used to track the spread of plant invasions through time and space. Nevertheless, few studies have utilised this resource for genetic analysis to reconstruct a more complete picture of historical invasion dynamics, including the occurrence of separate introduction events. In this study, we combined nuclear and chloroplast microsatellite analyses of contemporary and historical collections of Senecio madagascariensis, a globally invasive weed first introduced to Australia c. 1918 from its native South Africa. Analysis of nuclear microsatellites, together with temporal spread data and simulations of herbarium voucher sampling, revealed distinct introductions to south-eastern Australia and mid-eastern Australia. Genetic diversity of the south-eastern invasive population was lower than in the native range, but higher than in the mid-eastern invasion. In the invasive range, despite its low resolution, our chloroplast microsatellite data revealed the occurrence of new haplotypes over time, probably as the result of subsequent introduction(s) to Australia from the native range during the latter half of the 20th century. Our work demonstrates how molecular studies of contemporary and historical field collections can be combined to reconstruct a more complete picture of the invasion history of introduced taxa. Further, our study indicates that a survey of contemporary samples only (as undertaken for the majority of invasive species studies) would be insufficient to identify potential source populations and occurrence of multiple introductions.

The Michigan Historical Collections ... some impressions.

Mode of access: Internet.

Indiana historical collections /

Publication suspended 1982-1997.

Historical collections of Louisiana and Florida /

Mode of access: Internet.

Michigan historical collections.

One 40 v. set in special collections.

Michigan historical collections.

One 40 v. set in special collections.

Historical collections of New Jersey, past and present : containing a general collection of the most interesting facts, traditions, biographical sketches, anecdotes, etc., relating to the history and antiquities, with geographical descriptions, of all the important places in the State, and the State census of all the towns in 1865 /

Mode of access: Internet.

Origin, rise, and progress of Mormonism : biography of its founders and history of its church : personal remembrances and historical collections hitherto unwritten /

Indice.

Historical collections /

Description based on: Vol. 15.

Historical collections of the state of Pennsylvania; containing a copicus selection of the most interesting facts, traditions, biographical sketches, anecdotes, etc., relating to its history and antiquities, both general and local, with topographical descriptions of every county and all the larger towns in the state. Illus. by 165 engravings.

No. 23 in John Warner Barber and his books by Chauncey Cushing Nash ... Milton, Mass., 1934.

Historical collections : being a general collection of interesting facts, traditions, biographical sketches, anecdotes, &c., relating to the history and antiquities of every town in Massachusetts, with geographical descriptions /

Mode of access: Internet.

Essex Institute historical collections.

Vols. 9-10, 1869-70, called also ser. 2, v. 1-2.

Historical collections of the Joseph Habersham Chapter, Daughters American Revolution.

Mode of access: Internet.

South Dakota historical collections /

Vol. 16, pt. 2 never published.

Historical collections of the great West: containing narratives of the most important and interesting events in western history -remarkable individual adventures - sketches of frontier life - descriptions of natural curiosities: to which is appended historical and descriptive sketches of Oregon, New Mexico, Texas, Minnesota, Utah, California, Washington, Nebraska, Kansas, etc., etc.

v. 2 has caption title only.