CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Molluscan Research   
Molluscan Research
  An international journal for all branches of malacology
blank image Search
blank image blank image
blank image
  Advanced Search

Journal Home
General Information


Article << Previous     |     Next >>   Contents Vol 22(1)

Destruction of Indoplanorbis exustus (Planorbidae) eggs by Pomacea bridgesi (Ampullariidae)

G. Aditya and S. K. Raut

Molluscan Research 22(1) 87 - 90
Published: 15 May 2002


Six size classes (5–9 mm, 10–14 mm, 15–19 mm, 20–24 mm, 25–30 mm and 30–34 mm) of the ampullariid snail Pomacea bridgesi were experimentally exposed to 10–25 egg capsules of the planorbid snail Indoplanorbis exustus. With one exception, in all the trials performed with the snails of the four highest size classes, egg capsules of I. exustus were destroyed by P. bridgesi, whereas in the 5–9 mm and 10–14 mm size classes, egg capsules were destroyed in 20% and 68.96% of trials respectively. An individual of Pomacea belonging to each of the six size classes could destroy, on average, 0.28, 2.27, 2.38, 3.82, 3.75 and 3.62 egg capsules, respectively, during a period of 24 hours. Irrespective of size class, an individual could consume 0–6 (average 1.57 0.08 s.e.) and damage 0–9 (average 1.14 0.10 s.e.) egg capsules per 24 hours. On average there are about 20 eggs in each capsule, so an individual of P. bridgesi would be able to destroy around 60 eggs of I. exustus daily. These observations are relevant to possible biological control of Indoplanorbis.

Full text doi:10.1071/MR02002

© CSIRO 2002

blank image
 PDF (179 KB)
 Export Citation
Legal & Privacy | Contact Us | Help


© CSIRO 1996-2015