SEXUAL BEHAVIOUR OF THE MEDITERRANEAN FLOUR MOTH, ANAGASTA KÜHNIELLA: SOME INFLUENCES OF AGE, PHOTOPERIOD, AND LIGHT INTENSITY

1970 ◽  
Vol 102 (5) ◽  
pp. 534-540 ◽  
Author(s):  
R. M. M. Traynier
Keyword(s):  
Sex Pheromone ◽  
Light Intensity ◽  
Organic Solvents ◽  
Sexual Behaviour ◽  
Light Period ◽  
Unmated Female ◽  
Diel Cycles ◽  
The Mediterranean ◽  
Old Females ◽  
Mediterranean Flour Moth

AbstractUnmated female A. kühniella (Zell.) emitted a sex pheromone at the beginning of the light period of a 24 hour cycle of light and dark periods. There were no differences apparent in the duration of the calling posture by females in light of 1, 40, or 200 lux. A sex pheromone was extracted from the abdominal tips of unmated females of various ages with organic solvents, 3-day-old females gave the most potent extracts. Extracts of equal potence were obtained from females at different times during the diel cycles of photoperiod. The response of males to the extract was maximal at dawn, increased with age for 5 days, and was greater in light of 1 lux intensity than of 200 lux. Both sexes showed an anticipation of the beginning of the light period in their sexual behaviour, but if the timing of the cycle of photoperiod was changed the behaviour of both sexes became synchronised to the new cycle on its second or third occurrence.

scholarly journals The Sex Pheromone of the Mediterranean Flour Moth

1971 ◽  
Vol 35 (3) ◽  
pp. 447-448 ◽  
Author(s):  
Yasumasa KUWAHARA ◽  
Hidetoshi HARA ◽  
Shoziro ISHII ◽  
Hiroshi FUKAMI
Keyword(s):  
Sex Pheromone ◽  
The Mediterranean ◽  
Mediterranean Flour Moth

The Sex Pheromone of the Mediterranean Flour Moth

1971 ◽  
Vol 35 (3) ◽  
pp. 447-448 ◽  
Author(s):  
Yasumasa Kuwahara ◽  
Hidetoshi Hara ◽  
Shoziro Ishii ◽  
Hiroshi Fukami
Keyword(s):  
Sex Pheromone ◽  
The Mediterranean ◽  
Mediterranean Flour Moth

scholarly journals Fleshy Red Algae Mats Influence Their Environment in the Mediterranean Sea

2021 ◽  
Vol 8 ◽  
Author(s):  
Neele Schmidt ◽  
Yusuf C. El-Khaled ◽  
Felix I. Roßbach ◽  
Christian Wild
Keyword(s):  
Environmental Factors ◽  
Light Intensity ◽  
Water Temperature ◽  
Mediterranean Sea ◽  
Water Column ◽  
Red Algae ◽  
Water Movement ◽  
Ecosystem Engineer ◽  
Overlying Water ◽  
The Mediterranean

In the Mediterranean Sea, the fleshy red alga Phyllophora crispa forms dense mats of up to 15 cm thickness, mainly located on rocky substrates in water depths below 20 m. Because of the observed density of these mats and some first observations, we hypothesize that P. crispa is a yet undescribed ecosystem engineer that provides a multitude of ecological niches for associated organisms along small-scale environmental gradients. Therefore, we conducted an in-situ pilot study in the Western Mediterranean Sea to assess potential influence of the algae mats on the key environmental factors water movement, temperature and light intensity. We comparatively and simultaneously measured in P. crispa mats, in neighboring Posidonia oceanica seagrass meadows, on neighboring bare rocky substrates without algae mats, and in the directly overlying water column. We used several underwater logging sensors and gypsum clod cards. Findings revealed that P. crispa significantly reduced water movement by 41% compared to the overlying water column, whereas water movement was not affected by P. oceanica meadows and bare rocky substrates. Surprisingly, P. crispa increased the water temperature by 0.3°C relative to the water column, while the water temperature in P. oceanica and on bare rocky substrates was reduced by 0.5°C. Light intensity inside the red algae mats was reduced significantly by 69% compared to the water column. This was similar to measured light reduction of 77% by P. oceanica. These findings highlight the strong influence of the dense red algae mats on some key environmental factors. Their influence is obviously similar or even higher than for the well-known seagrass ecosystem engineer. This may be a factor that facilitates associated biodiversity similarly as described for P. oceanica.

Ultrastructure of the vasa deferentia of the mediterranean flour moth

1976 ◽  
Vol 149 (4) ◽  
pp. 483-505 ◽  
Author(s):  
John G. Riemann ◽  
Barbara J. Thorson
Keyword(s):  
The Mediterranean ◽  
Mediterranean Flour Moth
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