scholarly journals Life-Cycle Variation in Geophytes

1981 ◽  
Vol 68 (4) ◽  
pp. 652 ◽  
Author(s):  
Amots Dafni ◽  
Dan Cohen ◽  
Imanuel Noy-Mier
Keyword(s):  
Life Cycle ◽  
Cycle Variation

Multimodal Life-Cycle Variation in 13- and 17-Year Periodical Cicadas (Hemiptera: Cicadidae: Magicicada)

2017 ◽  
Vol 90 (3) ◽  
pp. 211-226 ◽  
Author(s):  
David C. Marshall ◽  
Kathy B. R. Hill ◽  
John R. Cooley
Keyword(s):  
Life Cycle ◽  
Periodical Cicadas ◽  
Cycle Variation

scholarly journals Climate effects on life cycle variation and population genetic architecture of the black bean aphid, Aphis fabae

2011 ◽  
Vol 20 (19) ◽  
pp. 4165-4181 ◽  
Author(s):  
CHRISTOPH SANDROCK ◽  
JABRAEIL RAZMJOU ◽  
CHRISTOPH VORBURGER
Keyword(s):  
Life Cycle ◽  
Population Genetic ◽  
Genetic Architecture ◽  
Aphis Fabae ◽  
Climate Effects ◽  
Black Bean ◽  
Cycle Variation ◽  
Black Bean Aphid

Local adaptation of photoperiodic plasticity maintains life cycle variation within latitudes in a butterfly

Ecology ◽  
2018 ◽  
Vol 100 (1) ◽  
Author(s):  
Olle Lindestad ◽  
Christopher W. Wheat ◽  
Sören Nylin ◽  
Karl Gotthard
Keyword(s):  
Life Cycle ◽  
Local Adaptation ◽  
Cycle Variation

LIFE CYCLE VARIATION INCLUDING TRIMORPHISM IN THE FORAMINIFER TROCHAMMINA INFLATA FROM NORTH EUROPEAN SALT MARSHES

2006 ◽  
Vol 36 (4) ◽  
pp. 279-290 ◽  
Author(s):  
G. Lehmann ◽  
R. Rottger ◽  
J. Hohenegger
Keyword(s):  
Life Cycle ◽  
Salt Marshes ◽  
Cycle Variation

Life-cycle variation inPanonychus akitanus Ehara (Acarina:Tetranychidae)

1986 ◽  
Vol 2 (2) ◽  
pp. 125-136 ◽  
Author(s):  
Tetsuo Gotoh
Keyword(s):  
Life Cycle ◽  
Cycle Variation

Arsenic speciation in freshwater snails and its life cycle variation

2012 ◽  
Vol 14 (3) ◽  
pp. 743-751 ◽  
Author(s):  
Vivian W.-M. Lai ◽  
Katerina Kanaki ◽  
Spiros A. Pergantis ◽  
William R. Cullen ◽  
Kenneth J. Reimer
Keyword(s):  
Life Cycle ◽  
Arsenic Speciation ◽  
Freshwater Snails ◽  
Cycle Variation

scholarly journals Life-cycle variation in the aphid Sitobion avenae : costs and benefits of male production

2002 ◽  
Vol 27 (6) ◽  
pp. 692-701 ◽  
Author(s):  
Alvin J. Helden ◽  
A. F. G. Dixon
Keyword(s):  
Life Cycle ◽  
Sitobion Avenae ◽  
Costs And Benefits ◽  
Male Production ◽  
Cycle Variation

Life cycle variation and regulation of macronuclear DNA content in Tetrahymena thermophila

Chromosoma ◽  
1978 ◽  
Vol 69 (1) ◽  
pp. 1-19 ◽  
Author(s):  
F. P. Doerder ◽  
L. E. DeBault
Keyword(s):  
Life Cycle ◽  
Dna Content ◽  
Tetrahymena Thermophila ◽  
Cycle Variation

Life cycle variation of Myzus persicae (Hemiptera: Aphididae) in Greece

2002 ◽  
Vol 92 (4) ◽  
pp. 309-319 ◽  
Author(s):  
J.T. Margaritopoulos ◽  
J.A. Tsitsipis ◽  
S. Goudoudaki ◽  
R.L. Blackman
Keyword(s):  
Life Cycle ◽  
Myzus Persicae ◽  
Host Plants ◽  
Primary Host ◽  
Low Frequencies ◽  
Cycle Variation ◽  
Ecological Aspects ◽  
North Eastern ◽  
Winter Crops ◽  
Almost All

AbstractDuring the years 1995–1999 the life cycle category of 2797 clones of Myzus persicae (Sulzer) was examined. The clones originated from primary and secondary hosts from different localities of North and Central Greece and the island of Crete in the south. Four different overwintering life cycle strategies were found that have also been described for M. persicae and other heteroecious species previously. A geographical variation was found in the proportion of holocyclic clones from tobacco and other secondary hosts associated with the abundance of the primary host in the sampling regions. In Central Macedonia, around the main peach-growing regions, the proportion of holocyclic clones was mostly above 50% and in some cases reached 100%. In localities of East Macedonia, holocyclic clones were also frequent. On the other hand, further south or in north-eastern Greece, where peach is not common, the proportion of holocyclic clones varied between 0 and 33%. Fifty seven percent of examined anholocyclic clones produced males under short day conditions, suggesting that androcyclic clones in Greece represent an important factor of genetic variability. Intermediate clones were sampled from all host-plants but at low frequencies (3.6% of total examined clones and 6.9% of non-holocyclic ones). Moreover, a regional variation was found in different colour forms feeding on tobacco plants. Red clones were predominant in regions where aphids overwinter parthenogenetically on weeds or winter crops. However, almost all clones from the primary host were green. The ecological aspects of life cycle variation are discussed.

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