scholarly journals Genetic differentiation among Brazilian populations of Euschistus heros (Fabricius) (Heteroptera: Pentatomidae) based on RAPD analysis

2004 ◽  
Vol 33 (2) ◽  
pp. 179-187 ◽  
Author(s):  
Daniel R. Sosa-Gomez ◽  
Katiaíres E. Delpin ◽  
Alvaro M.R. Almeida ◽  
Edson Hirose
2005 ◽  
Vol 95 (6) ◽  
pp. 517-526 ◽  
Author(s):  
A.J. Lowe ◽  
B.J. Hicks ◽  
K. Worley ◽  
R.A. Ennos ◽  
J.D. Morman ◽  
...  

AbstractPine beauty moth, Panolis flammea (Denis & Schiffermüller), is a recent but persistent pest of lodgepole pine plantations in Scotland, but exists naturally at low levels within remnants and plantations of Scots pine. To test whether separate host races occur in lodgepole and Scots pine stands and to examine colonization dynamics, allozyme, randomly amplified polymorphic DNA (RAPD) and mitochondrial variation were screened within a range of Scottish samples. RAPD analysis indicated limited long distance dispersal (FST = 0.099), and significant isolation by distance (P < 0.05); but that colonization between more proximate populations was often variable, from extensive to limited exchange. When compared with material from Germany, Scottish samples were found to be more diverse and significantly differentiated for all markers. For mtDNA, two highly divergent groups of haplotypes were evident, one group contained both German and Scottish samples and the other was predominantly Scottish. No genetic differentiation was evident between P. flammea populations sampled from different hosts, and no diversity bottleneck was observed in the lodgepole group. Indeed, lodgepole stands appear to have been colonized on multiple occasions from Scots pine sources and neighbouring populations on different hosts are close to panmixia.


1998 ◽  
Vol 27 (4) ◽  
pp. 559-568 ◽  
Author(s):  
Maria L.M. Costa ◽  
Miguel Borges ◽  
Evaldo F. Vilela

Estudou-se a biologia de Euschistus heros (F.) (Heteroptera: Pentatomidae) em laboratório sob 24±0,5ºC, 70±10% UR e fotofase de 14 h. O tempo médio de desenvolvimento até adulto foi de 38,6 d, sendo o 2º estádio ninfal, o de maior índice de mortalidade (10,4%). A longevidade de E. heros variou de acordo com o sexo e atividade sexual. Machos e fêmeas atingiram a maturidade sexual com 11,4 e 11,2 d, respectivamente. O tempo médio para a colocação de posturas, após o primeiro acasalamento, variou de 9,1 d para fêmeas, que acasalaram uma única vez, até 13,9 dias para fêmeas que acasalaram várias vezes durante o período de sobrevivência. O número médio de ovos por fêmea variou de 108,5 até 130,5, dependendo do número de acasalamento das fêmeas estudadas. Juntamente com a deposição das massas de ovos, foi observada a colocação de posturas isoladas com percentagens de 71,7 e 77,8 respectivamente, também dependendo do número de acasalamentos.


Polar Biology ◽  
2003 ◽  
Vol 26 (3) ◽  
pp. 166-170 ◽  
Author(s):  
Chester J. Sands ◽  
Simon N. Jarman ◽  
George D. Jackson

Ecotoxicology ◽  
2019 ◽  
Vol 28 (7) ◽  
pp. 763-770 ◽  
Author(s):  
Jamile F. S. Cossolin ◽  
Mônica J. B. Pereira ◽  
Luis C. Martínez ◽  
Leonardo M. Turchen ◽  
Muhammad Fiaz ◽  
...  

2016 ◽  
Vol 36 (2) ◽  
Author(s):  
刘军侠 LIU Junxia ◽  
刘全超 LIU Quanchao ◽  
姜文虎 JIANG Wenhu ◽  
宋晓英 SONG Xiaoying ◽  
高宝嘉 GAO Baojia

1995 ◽  
Vol 30 (3) ◽  
pp. 333-341 ◽  
Author(s):  
Antônio R. Panizzi ◽  
Cintia C. Niva ◽  
Edson Hirose

Studies were conducted in the laboratory and in growth chambers to determine if the location of particular seeds within soybean pods were preferred by adult Nezara viridula (L.), Euschistus heros (F.), and Piezodorus guildinii (Westwood) (Heteroptera: Pentatomidae). Results demonstrated that feeding frequency, as indicated by the number of punctures (i.e., stylet sheaths), was significantly greater (P &lt; 0.05) on the proximal seed, than on other seeds, both for detached pods and pods on plants. In general, the number of punctures on the proximal seed was 2–3X greater than punctures observed in the medial or distal region. Of the three species studied, N. viridula showed the greatest feeding activity and P. guildinii the least. No significant differences in feeding activity between sexes were observed. N. viridula fed more frequently at 22 than at 29°C, while no significant temperature effect was observed for E. heros.


2017 ◽  
Vol 20 (1) ◽  
pp. 279-287
Author(s):  
Rachel Colauto Milanezi Aguiar ◽  
Patrícia Elizabeth Husch ◽  
Raquel Bozini Gallo ◽  
Sheila Michele Levy ◽  
Laurival Antônio Vilas-Bôas ◽  
...  

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