Effet de la presence des oeufs de couleur jaune et grise au sein des pontes d’achatina fulica apres incubation sur differents substrats

Abstract EN

The incubation testing of Achatina fulica eggs on different incubation substrates give very low hatch rates in the presence of pundits containing gray and yellow eggs.

The 2nd and 3rd incubations on sawdust substrate respectively contained the clutches 230 and 157 eggs with 13% hatching rate and 19.74%.

On the rainforest floor the first incubation of eggs 265 gives 5 hatching rate, 28%, and the third with 158 eggs a rate of 4.43%.

The resulting raw incubations of 172 eggs and 225 eggs respectively on cotton wool and coconut husks, give hatching rate of 15.69% and 3.55%.

Regarding planting the soil, in the second incubation, 104 eggs laid on, there was no hatching.

However, some pundits without abnormal eggs present low birth rate compared to the number of eggs laid.

On sawdust 160 eggs laid only 33% of hatching; on the jungle floor 340 eggs laid and hatching 31.47% on the substrate Mattresses coconut 111 eggs laid only 15.31% of hatchability.

Isolates revealed the presence of six fungal genera with varying frequency.

Aspergillus Niger, recognized as very pathogenic to Achatina fulica egg is this fungus incubation on all substrates.

On the other hand,.

Penicillium decumbens was isolated only on planting and soil.

virgin forest floor was the substrate that contained the more mushrooms.

Niger, Aspergillus terreus, Phoma sp., Penicillium sp.

and Trichoderma sp.

were identified from abnormal eggs present in the clutches of Achatina fulica.