Transport and Dispersal of Stictococcus Vayssierei (Hemiptera, Stictococcidae) by Anoplolepis tenella (Hymenoptera, Formicidae)

Dispersal can be a crucial factor affecting fitness in insects. We conducted a series of experiments and observations with the aim of determining the dispersal mode of the African root and tuber scale Stictococcus vayssierei, a pest on cassava in the Congo Basin. We monitored the main options of dispersal that occurred in scale insects: wandering of first-instar nymphs (crawlers), active dispersal by ant workers, phoresis on colony-founding queen ants, and passive dispersal by wind. Results showed that A. tenella workers are actively involved in the transport and dissemination of scale crawlers. When ants were excluded, crawlers could move by themselves for a short distance to find the host plant. In the presence of ants, crawlers were transported by ant workers for longer distance across the bridge and established on scale-free plants. Scales transport increased with the duration of the experiment and ant density. Neither a case of phoresis nor dispersal by wind was recorded, suggesting that passive dispersal is rare. These results outline the active role of A. tenella workers in the dispersal of immature stages of S. vayssierei in Southern Cameroon and have implication in the management of the scale on cassava.

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Additional Info

Field Value
Creator Fotso Kuate, Apollin
Creator Affiliation International Institute of Tropical Agriculture (IITA)
Creator ID Type ORCID
Creator ID 0000-0002-5247-7519
Subject Vocab (AGROVOC/GACS/CAB) Ants,Hemiptera,Hymenoptera,Cassava,Instar,Scale insects
Subject(s) Stictococcus Vayssierei,Anoplolepis tenella,Dispersal
Publisher International Institute of Tropical Agriculture (IITA)
Contributor Person Hanna, Rachid; Tindo, Morris; Nagel, Peter
Contributor Role Other
Contributor Project Lead Organisation Center International Institute of Tropical Agriculture (IITA)
Contributor Project Lead Center International Institute of Tropical Agriculture (IITA)
Contributor CRP CGIAR Research Program on Roots, Tubers and Banana(RTB)
Contributor Partner Not Applicable
Contributor Donor Research Fellow Partnership Program (RFPP), International Fund for Agricultural Development (IFAD)
Contributor Project Toward Sustainable control options against the African root and tuber scale. Understanding the Biology on the associated ant Anoplolepis tenella in the Congo Basin
Contributor Affiliation International Institute of Tropical Agriculture (IITA)
Open-Access status Open Access
Production Date 2008-07-24
Embargo End Date
Content Type Dataset
File Format csv
Identifier Type DOI
Identifier https://doi.org/10.25502/489j-9q10/d
Identifier Citation Fotso Kuate A, Hanna R, Tindo M, Nagel P. 2015. Transport and Dispersal of Stictococcus Vayssierei (Hemiptera, Stictococcidae) by Anoplolepis tenella (Hymenoptera, Formicidae). J Insect Behav 28:426-435. doi: http://dx.doi.org/10.1007/s10905-015-9513-5
Source Toward Sustainable control options against the African root and tuber scale. Understanding the Biology on the associated ant Anoplolepis tenella in the Congo Basin
Language English
Relation Not applicable
Agroecological Zone Humid warm tropics
Coverage Region Sub-Saharan Africa
Coverage country Cameroon,Democratic Republic of Congo,Equitorial Guinea,Gabon,Republic of the Congo
Coverage Admin Unit Not applicable
Coverage X 7.36972, -4.03833, 1.65080, -0.80369, -0.22802
Coverage Y 12.35472, 21.75866, 10.26789, 11.60944, 15.82766
Coverage Start Date
Coverage End Date 2008-07-24
Contact Fotso Kuate, Apollin; Visiting Scientist, International Institute of Tropical Agriculture (IITA)
Contact Email a.fotso@cgiar.org
Restriction CC-BY 4.0
Email Permission Not applicable
Rights CC-BY 4.0