Effect of temperature and irradiance on the growth and reproduction of Enteromorpha prolifera J. Ag. (Chlorophycophyta, Chlorophyceae)

2008 ◽  
Vol 26 (4) ◽  
pp. 357-362 ◽  
Author(s):  
Gang Fu ◽  
Jianting Yao ◽  
Fuli Liu ◽  
Jidong Liu ◽  
Xiuliang Wang ◽  
...  
Keyword(s):  
Effect Of Temperature ◽  
Enteromorpha Prolifera ◽  
Growth And Reproduction

EFFECT OF TEMPERATURE AND GRAZING ON GROWTH AND REPRODUCTION OF FLOATINGMACROCYSTISSPP. (PHAEOPHYCEAE) ALONG A LATITUDINAL GRADIENT

2009 ◽  
Vol 45 (3) ◽  
pp. 547-559 ◽  
Author(s):  
Eva Rothäusler ◽  
Iván Gómez ◽  
Iván A. Hinojosa ◽  
Ulf Karsten ◽  
Fadia Tala ◽  
...  
Keyword(s):  
Latitudinal Gradient ◽  
Effect Of Temperature ◽  
Growth And Reproduction

Effect of temperature and photoperiod on growth and reproduction of Helix aspersa var. maxima

1998 ◽  
Vol 130 (3) ◽  
pp. 367-372 ◽  
Author(s):  
S. JESS ◽  
R. J. MARKS
Keyword(s):  
Helix Aspersa ◽  
Egg Laying ◽  
Effect Of Temperature ◽  
Low Light ◽  
Long Day ◽  
Artificial Photoperiod ◽  
Two Temperatures ◽  
Effects Of Temperature ◽  
Secretory Products ◽  
Growth And Reproduction

Growth and reproduction of the snail Helix aspersa (Müller) var. maxima were examined at four combinations of temperature and artificial photoperiod and in transparent and opaque containers at two temperatures for over 40 weeks. Effects of temperature on both processes predominated. However, following 10 weeks of oviposition at optimum temperature (20°C), absence of photoperiod inhibited egg-laying throughout a further 15 weeks. Following inhibition of oviposition, the albumen gland atrophied, indicating the storage of secretory products.Snail growth was improved by rearing in opaque rather than transparent containers in a long-day photoperiod. Snail oviposition was unaffected by container type throughout a 28-week period, demonstrating an acute perception of photoperiodicity by snails maintained at low light intensity.

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