. t:FFECT OF PHOTOPERIODS ·ON· THE RATE OF FOOD CONSUMPTION BY THE LAND SNAIL Monacha cartusiana (Muller) | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 9, Volume 30, Issue 11, November 2005, Page 7147-7152 PDF (1.8 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2005.239430 | ||||
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| Authors | ||||
| M. I. Mohamed; Reham F. Ali | ||||
| Department of Zool. and Agric. Nemat., Fac. Of Agric., Cairo Univ.,Giza,Egypt. | ||||
| Abstract | ||||
| This study was carried out to throw some light on the effect of different photoperiod levels, 6, 12 and 24 hours as well as natural light on the rate of food consumption by the glassy clover snail Monacha cartusiana (Maller) under laboratory conditions to know its feeding capacity. Data indicated that the rate of food consumption differs according to photoperiod and season of activity. This snail during the end of its season activity (May & June months 2005) fed in light and dark with slightly differs rate of food consumption during the photoperiod 6 or 12 or 24 hour and without any significant as well as the range of food consumption in different treatments approximately similar. It was found that the rate of food consumption of the same snails' group averaged 113 & 113.5 mm2 during feeding under six hours dark and light from 6.0 a.m. to 12.0 a.m. respectively; while this rate averaged 118.5 & 102.7 mm2 under the same six hours dark and light from 6.0 p.m. to 12.0 p.m. respectively. At 12.0 hour dark and light this rate averaged 134.2 & 121.5 mm2 from 6.0 a.m. to 6.0 p.m. respectively; while it averaged at the same period 153.0 & 107.2 mm2 from 6.0 p.m. to 6.0 a.m. respectively. On the other hand, the daily rate of food consumption averaged 73.5 & 45.4 mm2 under 24 hour complete dark and natural light respectively; while it averaged 157.8 & 57.2 mm2 under 24 hour complete light and natural light respectively. While during its active season (November & December months 2005), this snail consumed on rate averaged 328.0 & 161.7 mm2 when feeding during 24 hour of complete light and complete dark (day after day). On the other hand this rate averaged 174.0 mm2 during natural light. | ||||
| Keywords | ||||
| Photoperiod; Food consumption; Gastropoda; Land snails | ||||
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