Phylogeographic structure of jack pine (Pinus banksiana; Pinaceae) supports the existence of a coastal glacial refugium in northeastern North America

2010 ◽  
Vol 97 (11) ◽  
pp. 1903-1912 ◽  
Author(s):  
Julie Godbout ◽  
Jean Beaulieu ◽  
Jean Bousquet
Author(s):  
D. W. Minter

Abstract A description is provided for Davisomycella ampla. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pinus banksiana, P. contorta, P. strobus, P. pinaster, P. radiata. DISEASE: Jack pine needle blight. GEOGRAPHICAL DISTRIBUTION: North America (USA, Canada); South America (Brazil); New Zealand. TRANSMISSION: By air-borne ascospores.


Author(s):  

Abstract A new distribution map is provided for Pissodes terminalis Hopping. Coleoptera: Curculionidae. Hosts: Jack pine (Pinus banksiana) and lodgepole pine (Pinus contorta). Information is given on the geographical distribution in North America (Canada, Alberta, British Columbia, Manitoba, Northwest Territories, Saskatchewan, Yukon, USA, California, Colorado, Idaho, Montana, Oregon, South Dakota, Washington, Wyoming).


1960 ◽  
Vol 92 (1) ◽  
pp. 65-79 ◽  
Author(s):  
J. R. Vockeroth

Several species of resin midges (or pine-pitch midges) have been recorded from species of Pinus in North America. These are all at present referred to the genus Retinodiplosis Kieffer 1912; for reasons given below this genus is here treated as a subjective synonym of Cecidomyia Meigen 1803. At least two species of Cecidomyia have been recorded from jack pine, Pinus banksiana Lamb., in Ontario, Manitoba, Saskatchewan and Michigan (Bradlev (1946), Barker and Wong (1948), anonymous (1946), Prentice and Hildahl (1957, 1958) and Mc-Daniel (1938)); they were sometimes determined as Retinodiplosis sp., sometimes tentatively or definitely as R. resinicola (O.S.). Study of specimens of Cecidomyia from P. banksiana collected during the past three years by officers of the Forest Biology Regional Research Laboratories, Canada Department of Agriculture, has shown that three species of the genus occur on this host. All three are described as new in this paper. C. resinicola (O.S.) 1871, originally described from Virginia pine, Pinus virginiana Mill., was not present in this material nor among Michigan specimens from P. banksiana in the U.S.N.M.; it almost certainly does not occur on P. banksiana.


1967 ◽  
Vol 45 (11) ◽  
pp. 2201-2211 ◽  
Author(s):  
C. W. Yeatman

Interpretation of genetic variation associated with geographic origin must take into account the evolution and migratory history of the species being-studied. A literature survey was made to determine the probable origin of jack pine (pinus banksiana) and its migration from glacial refugia following the Wisconsin glacial maximum. Jack pine and contorta pine (Pinus contorta) became differentiated following cooling of the climate and crustal uplift in western North America in the late Tertiary. Modern hybrid swarms and introgression of jack pine and lodgepole pine (Pinus contorta var. lalifolia) east of the Rocky Mountains are of recent origin, dating from late post-glacial migration from the east and west respectively. Geological and paleobotanical evidence, particularly from fossil pollen depositions, indicate that jack pine survived glaciation in an extensive refugium centered on the Appalachian Highlands of eastern North America, and not in additional refugia south or west of the Great Lakes. This conclusion is consistent with the clinal pattern of geographic variation evident from genecological studies of the species.


1961 ◽  
Vol 93 (1) ◽  
pp. 33-34 ◽  
Author(s):  
Robert E. Bugbee

In the spring of 1959, Dr. O. Peck of the Entomology Research Institute, Department of Agriculture, Ottawa, Canada, sent to me a long series of Eurytoma specimens for determination. Dr. J. B. Thomas reared the series from buds of jack pine (Pinus banksiana) and is ready to publish on the biology of the species. This new species has been included in a projected revision of the genus Eurytoma in North America, north of Mexico, but due to the uncertainty as to just when it will be ready for publication, it seems best to publish the description concurrently with the paper by Dr. Thomas, so as not to hold up 'his valuable contribution to the biology of the species.


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