Limits...
Effect of humidity on egg hatchability and reproductive biology of the bamboo borer (Dinoderus minutus Fabricius).

Norhisham AR, Abood F, Rita M, Hakeem KR - Springerplus (2013)

Bottom Line: From the results, eclosion to first instar larva was recorded at all relative humidities tested.It was noted that pre-ovipositional period decreased from 14.20 ± 0.49 to 7.20 ± 0.31 days as relative humidity increased from 20% to 75% and slightly increased to 8.00 ± 0.37 days at 85% relative humidity.We conclude that female beetles may have a particular hygropreference in oviposition as total egg production increased with increasing relative humidity.

View Article: PubMed Central - PubMed

Affiliation: Department of Forest Management, Faculty of Forestry, Universiti Putra Malaysia (UPM), 43400 Serdang, Malaysia.

ABSTRACT
Wood products are highly exposed to infestation by powder post beetles. Dinoderus minutus (bamboo borer) is a wood boring beetle that seriously damage dried bamboo and finished bamboo products. Management of D. minutus using pesticides showed negative effects on environment despite being very costly. By understanding influence of natural climatic conditions on their reproductive behaviour, could help us to develop a cost effective and environmental friendly strategy to cope up with this problem. In the present study, reproductive parameters and egg development of the bamboo borer were determined at 20%, 40%, 56%, 75% and 85% r.h. levels at constant temperature of 30° ± 2°C with 8 L-16D photoregime. From the results, eclosion to first instar larva was recorded at all relative humidities tested. The lowest shortest percentage of hatchability was recorded at 20% and 85% relative humidity with a mean incubation period of 4.63 ± 0.25 and 10.43 ± 0.32 days, respectively. It was noted that pre-ovipositional period decreased from 14.20 ± 0.49 to 7.20 ± 0.31 days as relative humidity increased from 20% to 75% and slightly increased to 8.00 ± 0.37 days at 85% relative humidity. We conclude that female beetles may have a particular hygropreference in oviposition as total egg production increased with increasing relative humidity.

No MeSH data available.


Related in: MedlinePlus

Age-specific fecundity curves ofD. minutusat different relative humidities.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3569590&req=5

Fig1: Age-specific fecundity curves ofD. minutusat different relative humidities.

Mentions: Fecundity curves for D. minutus under different relative humidity are shown in Figure 1. Fecundity curve for 40%, 56% and 75% show normal distribution with few fluctuations throughout the oviposition period. The lowest and highest relative humidity resulted in different fecundity curve pattern compared with the intermediate relative humidity. Peak fertility period was encountered earlier at 75% relative humidity on day 24 with a mean of 1.04 followed by day 27 at 56% and 85% relative humidity with a mean of 0.85 and 1.40, respectively. Peak fertility period at lower relative humidity occurred at a mean of 0.80 on day 27 at 40% relative humidity while at 20% relative humidity fecundity curve obtained did not present peak fertility period as reproductive parameters recorded under this condition was very low.Figure 1


Effect of humidity on egg hatchability and reproductive biology of the bamboo borer (Dinoderus minutus Fabricius).

Norhisham AR, Abood F, Rita M, Hakeem KR - Springerplus (2013)

Age-specific fecundity curves ofD. minutusat different relative humidities.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3569590&req=5

Fig1: Age-specific fecundity curves ofD. minutusat different relative humidities.
Mentions: Fecundity curves for D. minutus under different relative humidity are shown in Figure 1. Fecundity curve for 40%, 56% and 75% show normal distribution with few fluctuations throughout the oviposition period. The lowest and highest relative humidity resulted in different fecundity curve pattern compared with the intermediate relative humidity. Peak fertility period was encountered earlier at 75% relative humidity on day 24 with a mean of 1.04 followed by day 27 at 56% and 85% relative humidity with a mean of 0.85 and 1.40, respectively. Peak fertility period at lower relative humidity occurred at a mean of 0.80 on day 27 at 40% relative humidity while at 20% relative humidity fecundity curve obtained did not present peak fertility period as reproductive parameters recorded under this condition was very low.Figure 1

Bottom Line: From the results, eclosion to first instar larva was recorded at all relative humidities tested.It was noted that pre-ovipositional period decreased from 14.20 ± 0.49 to 7.20 ± 0.31 days as relative humidity increased from 20% to 75% and slightly increased to 8.00 ± 0.37 days at 85% relative humidity.We conclude that female beetles may have a particular hygropreference in oviposition as total egg production increased with increasing relative humidity.

View Article: PubMed Central - PubMed

Affiliation: Department of Forest Management, Faculty of Forestry, Universiti Putra Malaysia (UPM), 43400 Serdang, Malaysia.

ABSTRACT
Wood products are highly exposed to infestation by powder post beetles. Dinoderus minutus (bamboo borer) is a wood boring beetle that seriously damage dried bamboo and finished bamboo products. Management of D. minutus using pesticides showed negative effects on environment despite being very costly. By understanding influence of natural climatic conditions on their reproductive behaviour, could help us to develop a cost effective and environmental friendly strategy to cope up with this problem. In the present study, reproductive parameters and egg development of the bamboo borer were determined at 20%, 40%, 56%, 75% and 85% r.h. levels at constant temperature of 30° ± 2°C with 8 L-16D photoregime. From the results, eclosion to first instar larva was recorded at all relative humidities tested. The lowest shortest percentage of hatchability was recorded at 20% and 85% relative humidity with a mean incubation period of 4.63 ± 0.25 and 10.43 ± 0.32 days, respectively. It was noted that pre-ovipositional period decreased from 14.20 ± 0.49 to 7.20 ± 0.31 days as relative humidity increased from 20% to 75% and slightly increased to 8.00 ± 0.37 days at 85% relative humidity. We conclude that female beetles may have a particular hygropreference in oviposition as total egg production increased with increasing relative humidity.

No MeSH data available.


Related in: MedlinePlus