Impact of climate change on rice insect pests and their natural enemies

Forskningsoutput: KonferensbidragKonferenspaper, ej i proceeding/ej förlagsutgivet

Abstract

Rice is one of the important staple foods for half of the world population particularly Asian countries for
their livelihood, socio-economic and nutrition. Global warming is predicted to increase frequency of
precipitation/rainfall, intensity of drought and solar-radiation/UV-B radiation which might affect the intensity
and severity of rice pests in one hand, but also change in other friendly arthropods on the other hand. The
present studies discuss the influence of climatic factors (temperature and rainfall) on yellow stem borer (YSB),
brown planthopper (BPH), green leafhopper (GLH) and their natural enemies (spider, lady bird beetle, green
mirid bug). Light trap and sweep net catches of arthropods from different rice habitats were used in this study.
For GLH there is a strong periodicity at 6 months and a somewhat weaker periodicity at 12 months followed by
an even weaker periodicity at 3 months, especially valid for both methods of data collection (light trap and
sweep-net data). Finally, for GMB there is a strong periodicity at 6 months and a somewhat weaker periodicity
at 3 months followed by an even weaker periodicity at 4 months. There is a general increasing trend over the
ten years seems to be present in the GLH. This corresponds to that the abundance in 2005 is generally 15 times
larger than in January 1996. For LBB, there is an increasing trend of log abundance of LBB over time and
shows a strong periodicity at 3 months and a somewhat weaker periodicity at 4 months followed by an even
weaker periodicity at about 6 months. For Spider there is a strong periodicity at 2.4 months and a somewhat
weaker periodicity at 4 months followed by an even weaker periodicities at about 3 months and 6 months.
Results show an increase of maximum temperature of approximately 0.5 to 1°C over 10 years.

Detaljer

Författare
  • Nur Ahmed
  • Björn Holmquist
  • Sultana Nasrin
  • M Panna Ali
  • M Nazmul Bari
  • Mahfuj Ara Begum
  • Nadira Afsana
  • M Fazle Rabbi
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Sannolikhetsteori och statistik
Originalspråkengelska
Antal sidor13
StatusPublished - 2013
PublikationskategoriForskning
Peer review utfördJa
EvenemangInternational Conference on Climate Change Impact and Adaption (I3CIA-2013) - DUET, Gazipur, Bangladesh
Varaktighet: 2013 nov 142013 nov 16

Konferens

KonferensInternational Conference on Climate Change Impact and Adaption (I3CIA-2013)
LandBangladesh
OrtDUET, Gazipur
Period2013/11/142013/11/16