FAUNA OF TENUIPALPID MITES ASSOCIATED WITH FRUIT PLANTS IN BENGALURU & NEARBY PLACES AND SOME BIOLOGICAL ASPECTS OF Raoiella macfarlanei PRITCHARD & BAKER
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Date
2017-07-24
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
Study was undertaken on the fauna of tenuipalpid mites associated with fruit plants in
Bengaluru & other nearby places and some biological aspects of Raoiella macfarlanei
during 2016-17. Tenuipalpid mites were collected on 28 species of fruit plants belonging
to 22 botanical families from five different locations and the taxonomic identification was
carried out. The results revealed the presence of 15 species of tenuipalpid mites under
five genera. Genus Brevipalpus was from represented by maximum number of six
species, followed by Tenuipalpus (four), Raoiella & Terminalichus (two each) and
Pentamerismus (one). Brevipalpus yothersi is a new record to India and Tenuipalpus
guptai, Tenuipalpus yousefi & Terminalichus karachiensis are new records to Karnataka.
The development of Raoiella macfarlanei both female and male was faster on host plant
Syzygium cumini (21.70 & 18.93 days at 30°C and 26.88 & 25.71 days at room
temperature (21-22°C)) compared to that recorded on Syzygium jambos (24.16 & 21.04
and 29.98 & 28.25 days, respectively). Preoviposition and Oviposition periods for mated
female was lower (4.47 & 35 and 3.92 & 27.10 days) on Syzygium cumini at both the
temperatures (at room temperature & 30°C, respectively) compared to that recorded on
Syzygium jambos (5.53 & 35.40, 4.16 & 28.00 days). Net Reproductive Rate and Mean
Generation Time were higher on S. jambos at both the temperatures (22.11 & 53.39 at
room temperature and 19.55 & 41.50 at 30°C) compared to that recorded on S. cumini
(21.00 & 48.80, 18.30 & 38.20, respectively).
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