کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4503761 1624248 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Predation capacity, development and reproduction of the southern African flower bugs Orius thripoborus and Orius naivashae (Hemiptera: Anthocoridae) on various prey
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Predation capacity, development and reproduction of the southern African flower bugs Orius thripoborus and Orius naivashae (Hemiptera: Anthocoridae) on various prey
چکیده انگلیسی


• High predation capacities are observed on F. occidentalis larvae and T. urticae eggs.
• Development and reproduction of both Orius spp. are most favorable on F. occidentalis.
• Orius thripoborus shows higher growth rates than O. naivashae.
• Growth rates on M. persicae nicotianae are higher than on T. urticae.
• Only O. thripoborus holds promise for suppression of aphids and spider mites.

The little-studied species Orius thripoborus (Hesse) and Orius naivashae (Poppius) (Hemiptera: Anthocoridae) have potential as biological control agents of thrips pests in southern Africa, but may also hold promise for the control of other harmful arthropods. In this study, the predation capacity, development, reproduction and growth rates of both predatory species on the key pests Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), Tetranychus urticae Koch (Acari: Tetranychidae) and Myzus persicae nicotianae Blackman (Hemiptera: Aphididae) were examined under laboratory conditions. Female adults of O. thripoborus and O. naivashae fed on 24 and 18 F. occidentalis 2nd instars, and 15 and 21 T. urticae eggs per day, respectively. Developmental and reproductive parameters of both Orius species were most favorable on F. occidentalis. Their intrinsic rates of increase (rm) were highest when fed on F. occidentalis, averaging 0.123 and 0.131 females/female/day for O. thripoborus and O. naivashae, respectively. On the other prey, O. thripoborus showed significantly higher rm-values than O. naivashae. Overall, rm-values on M. persicae nicotianae were higher than on T. urticae, although differences were only significant for O. thripoborus. For O. naivashae, the estimated intrinsic rates of increase on the tested non-thrips prey were slightly negative. Our findings indicate the potential of both Orius spp. as biocontrol agents of thrips, whereas only O. thripoborus appears to hold promise for the suppression of aphids and spider mites as well.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Control - Volume 86, July 2015, Pages 52–59
نویسندگان
, , , ,