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Visual and Olfactory Cues with Nectar Accessibility: Drivers of Floral Selection in Sycanus annulicornis (Hemiptera: Reduviidae)

HAYATI Journal of Biosciences · Vol. 33 No. 4 (2026) · hlm. 1074–1083

DOI
10.4308/hjb.33.4.1074-1083
ISSN
2086-4094, 1978-3019
Terbit
2026-05-01
Penerbit
Bogor Agricultural University, Indonesia
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-nc/4.0

Abstrak

Sycanus annulicornis (assassin bug) is a potential predator of agricultural pests in soybean, rice, vegetable, and plantation crops. However, habitat degradation has reduced its population and effectiveness as a biological control agent. This study aimed to evaluate the floral selection of S. annulicornis based on visual and olfactory cues, as well as nectar accessibility. Behavior observations were conducted using choice and non-choice tests to assess visitation rates to different flower colors and plant species. The results showed a broad color preference, with the highest visitation rates to white (2.00 ± 0.82) and yellow (1.75 ± 0.63) flowers. In non-choice tests, the highest visitation percentages were recorded on Tagetes erecta (82%), Turnera subulata (80%), Turnera ulmifolia (73%), and Wedelia trilobata (67%). In choice tests, T. subulata was the most attractive plant, followed by T. ulmifolia, T. erecta, and W. trilobata. Floral morphological compatibility, particularly nectar accessibility, supported the utilization of supplementary food resources by S. annulicornis. These findings suggest that selecting appropriate flowering plants can be an effective conservation strategy to enhance the sustainability of S. annulicornis populations in agroecosystems.

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Sumber metadata: OAI-PMH (metadata jurnal) http://journal.ipb.ac.id/index.php/hayati/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en">Visual and Olfactory Cues with Nectar Accessibility: Drivers of Floral Selection in Sycanus annulicornis (Hemiptera: Reduviidae)</dc:title>
	<dc:creator xml:lang="en">Muhlison, Wildan</dc:creator>
	<dc:creator xml:lang="en">Maulida, Zulfa</dc:creator>
	<dc:creator xml:lang="en">Sucipto, Irwanto</dc:creator>
	<dc:creator xml:lang="en">Purnomo, Hari</dc:creator>
	<dc:description xml:lang="en">Sycanus annulicornis (assassin bug) is a potential predator of agricultural pests in soybean, rice, vegetable, and plantation crops. However, habitat degradation has reduced its population and effectiveness as a biological control agent. This study aimed to evaluate the floral selection of S. annulicornis based on visual and olfactory cues, as well as nectar accessibility. Behavior observations were conducted using choice and non-choice tests to assess visitation rates to different flower colors and plant species. The results showed a broad color preference, with the highest visitation rates to white (2.00 ± 0.82) and yellow (1.75 ± 0.63) flowers. In non-choice tests, the highest visitation percentages were recorded on Tagetes erecta (82%), Turnera subulata (80%), Turnera ulmifolia (73%), and Wedelia trilobata (67%). In choice tests, T. subulata was the most attractive plant, followed by T. ulmifolia, T. erecta, and W. trilobata. Floral morphological compatibility, particularly nectar accessibility, supported the utilization of supplementary food resources by S. annulicornis. These findings suggest that selecting appropriate flowering plants can be an effective conservation strategy to enhance the sustainability of S. annulicornis populations in agroecosystems.</dc:description>
	<dc:publisher xml:lang="en">Bogor Agricultural University, Indonesia</dc:publisher>
	<dc:date>2026-05-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>http://journal.ipb.ac.id/hayati/article/view/67873</dc:identifier>
	<dc:identifier>10.4308/hjb.33.4.1074-1083</dc:identifier>
	<dc:source xml:lang="en">HAYATI Journal of Biosciences; Vol. 33 No. 4 (2026): July 2026; 1074-1083</dc:source>
	<dc:source>2086-4094</dc:source>
	<dc:source>1978-3019</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>http://journal.ipb.ac.id/hayati/article/view/67873/33319</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2026 Wildan Muhlison, Zulfa Maulida, Irwanto Sucipto, Hari Purnomo</dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by-nc/4.0</dc:rights>
</oai_dc:dc>