A Genetic Analysis of Population Differences in Pheromone Production and Response Between Two Populations of the Turnip Moth, Agrotis segetum

1997 ◽  
Vol 23 (6) ◽  
pp. 1487-1503 ◽  
Author(s):  
Siana LaForest ◽  
Wenqi Wu ◽  
Christer Löfstedt
2013 ◽  
Vol 25 (5) ◽  
pp. 345-347 ◽  
Author(s):  
Qiu-Ling Wu ◽  
Wen-Xia Cui ◽  
Bao-Zhen Du ◽  
Yun Gu ◽  
Shu-Jun Wei

1993 ◽  
Vol 19 (1) ◽  
pp. 143-157 ◽  
Author(s):  
Wu Wenqi ◽  
Marie Bengtsson ◽  
Bill S. Hansson ◽  
Tommy Liljefors ◽  
Christer L�fstedt ◽  
...  

Behaviour ◽  
2006 ◽  
Vol 143 (8) ◽  
pp. 993-1012 ◽  
Author(s):  
Toshiaki Tanaka ◽  
Hideki Sugiura ◽  
Nobuo Masataka

AbstractRecently, the acoustic features of coo calls were reported to differ between two populations of Japanese macaques (Macaca fuscata yakui), namely the Ohirayama and Yakushima populations. We hypothesized that this difference may arise through differences in the acoustic environments of the two habitats, and measured the degrees of transmission of pure tones (250-8000 Hz) and the coo calls of the two populations in each habitat. In the Ohirayama habitat, lower frequencies were transmitted more efficiently, and the low-pitched coo calls of the Ohirayama population showed significantly better transmission than the high-pitched calls of the Yakushima population. In the Yakushima habitat, the degrees of transmission of the calls of the two populations did not differ significantly. Therefore, the calls of the Ohirayama population possess acoustic features that allow better transmission in their own habitat, suggesting that the habitat acoustics may be a factor contributing to the population difference between the calls.


1996 ◽  
Vol 44 (5) ◽  
pp. 559 ◽  
Author(s):  
MM Sale ◽  
BM Potts ◽  
AK West ◽  
JB Reid

Random amplified polymorphic DNA (RAPD) studies of a natural hybrid swarm between Eucalyptus amygdalina Labill. and E. risdonii Hook.f. and nearby allopatric stands revealed that, despite clear morphological differences, all bands were shared between species. However, frequency differences revealed genetic divergence between species, populations within species, and individuals within populations. Variation was greatest between individuals within populations and lowest between species. For both species, the direction of variation which distinguished the two populations was in a different direction to that which separated the two species, suggesting population differences were not due to introgression but were the result of genetic isolation and/or strong localised selection. Several morphologically typical individuals with intermediate RAPD profiles were detected in the hybrid swarm and nearby allopatric samples of both species, suggesting that some cryptic introgression may be occurring. Controlled F1 crosses generally had closer genetic affinity to E. risdonii, raising the possibility that some parents used may have been advanced generation hybrids. While natural hybrids selected for their intermediate leaf phenotype were usually also intermediate between the two species using RAPD markers, some deviated markedly toward E. risdonii. The study suggests that morphological appearance does not necessarily reflect genetic (RAPD) status and in some cases detectable RAPD differences between spatially close populations of the same species may be as great or greater than the differences between species.


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