---

Animalia >Arthropoda >Insecta >Hemiptera >Pentatomidae >Halyomorpha >

Stinkbugs have a gland called a caecum at the posterior intestine. The sac contains many microorganisms and functions to provide nutrients to the insects. The symbiotic microorganisms in the stinkbug Halyomorpha picus are bacillus bacteria. Transmission of symbiotic microorganisms from mother to the first instar larvae is as follows. After oviposition, a female drops its feces on the egg surface. Hatched larvae move over the eggs surface actively 15-30 minutes after hatching. The larvae push their proboscis to the egg surface in 30-60 degree angles and scratch the egg surface. The larvae continue this activity for 15-30 minutes and then stop moving. When the proboscis is examined under SEM, there are many microorganisms embedded in viscous materials in between hairs of the proboscis. Some microbes are also found in the feeding tube of the proboscis. After a while, the larvae blacken, gather around the egg mass, and become still. The microbes move from the proboscis to the digestive tract, and to the blind sac, which signals the completion of microbe transmission. A hard day of hatched larvae is over.

(Data No.momo050123hp01b)

Copyrights belong to author.
Read Terms of Service carefully

>>Japanese

[Database Home]