Effect of larval crowding on mating competitiveness of Anopheles gambiae mosquitoes
Abstract Background The success of sterile or transgenic Anopheles for malaria control depends on their mating competitiveness within wild populations. Current evidence suggests that transgenic mosquitoes have reduced fitness. One means of compensating for this fitness deficit would be to identify e...
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ftdoajarticles:oai:doaj.org/article:c181b1ff46b7443db2f36407f66814a2 2023-05-15T15:10:23+02:00 Effect of larval crowding on mating competitiveness of Anopheles gambiae mosquitoes Knols Bart GJ Nkwengulila Gamba John Bernadette Ng'habi Kija R Killeen Gerry F Ferguson Heather M 2005-09-01T00:00:00Z https://doi.org/10.1186/1475-2875-4-49 https://doaj.org/article/c181b1ff46b7443db2f36407f66814a2 EN eng BMC http://www.malariajournal.com/content/4/1/49 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-4-49 1475-2875 https://doaj.org/article/c181b1ff46b7443db2f36407f66814a2 Malaria Journal, Vol 4, Iss 1, p 49 (2005) Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2005 ftdoajarticles https://doi.org/10.1186/1475-2875-4-49 2022-12-31T11:50:03Z Abstract Background The success of sterile or transgenic Anopheles for malaria control depends on their mating competitiveness within wild populations. Current evidence suggests that transgenic mosquitoes have reduced fitness. One means of compensating for this fitness deficit would be to identify environmental conditions that increase their mating competitiveness, and incorporate them into laboratory rearing regimes. Methods Anopheles gambiae larvae were allocated to three crowding treatments with the same food input per larva. Emerged males were competed against one another for access to females, and their corresponding longevity and energetic reserves measured. Results Males from the low-crowding treatment were much more likely to acquire the first mating. They won the first female approximately 11 times more often than those from the high-crowding treatment (Odds ratio = 11.17) and four times more often than those from the medium-crowding treatment (Odds ratio = 3.51). However, there was no overall difference in the total number of matings acquired by males from different treatments (p = 0.08). The survival of males from the low crowding treatment was lower than those from other treatments. The body size and teneral reserves of adult males did not differ between crowding treatments, but larger males were more likely to acquire mates than small individuals. Conclusion Larval crowding and body size have strong, independent effects on the mating competitiveness of adult male An. gambiae. Thus manipulation of larval crowding during mass rearing could provide a simple technique for boosting the competitiveness of sterile or transgenic male mosquitoes prior to release. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Malaria Journal 4 1 49 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
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Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Knols Bart GJ Nkwengulila Gamba John Bernadette Ng'habi Kija R Killeen Gerry F Ferguson Heather M Effect of larval crowding on mating competitiveness of Anopheles gambiae mosquitoes |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background The success of sterile or transgenic Anopheles for malaria control depends on their mating competitiveness within wild populations. Current evidence suggests that transgenic mosquitoes have reduced fitness. One means of compensating for this fitness deficit would be to identify environmental conditions that increase their mating competitiveness, and incorporate them into laboratory rearing regimes. Methods Anopheles gambiae larvae were allocated to three crowding treatments with the same food input per larva. Emerged males were competed against one another for access to females, and their corresponding longevity and energetic reserves measured. Results Males from the low-crowding treatment were much more likely to acquire the first mating. They won the first female approximately 11 times more often than those from the high-crowding treatment (Odds ratio = 11.17) and four times more often than those from the medium-crowding treatment (Odds ratio = 3.51). However, there was no overall difference in the total number of matings acquired by males from different treatments (p = 0.08). The survival of males from the low crowding treatment was lower than those from other treatments. The body size and teneral reserves of adult males did not differ between crowding treatments, but larger males were more likely to acquire mates than small individuals. Conclusion Larval crowding and body size have strong, independent effects on the mating competitiveness of adult male An. gambiae. Thus manipulation of larval crowding during mass rearing could provide a simple technique for boosting the competitiveness of sterile or transgenic male mosquitoes prior to release. |
format |
Article in Journal/Newspaper |
author |
Knols Bart GJ Nkwengulila Gamba John Bernadette Ng'habi Kija R Killeen Gerry F Ferguson Heather M |
author_facet |
Knols Bart GJ Nkwengulila Gamba John Bernadette Ng'habi Kija R Killeen Gerry F Ferguson Heather M |
author_sort |
Knols Bart GJ |
title |
Effect of larval crowding on mating competitiveness of Anopheles gambiae mosquitoes |
title_short |
Effect of larval crowding on mating competitiveness of Anopheles gambiae mosquitoes |
title_full |
Effect of larval crowding on mating competitiveness of Anopheles gambiae mosquitoes |
title_fullStr |
Effect of larval crowding on mating competitiveness of Anopheles gambiae mosquitoes |
title_full_unstemmed |
Effect of larval crowding on mating competitiveness of Anopheles gambiae mosquitoes |
title_sort |
effect of larval crowding on mating competitiveness of anopheles gambiae mosquitoes |
publisher |
BMC |
publishDate |
2005 |
url |
https://doi.org/10.1186/1475-2875-4-49 https://doaj.org/article/c181b1ff46b7443db2f36407f66814a2 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 4, Iss 1, p 49 (2005) |
op_relation |
http://www.malariajournal.com/content/4/1/49 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-4-49 1475-2875 https://doaj.org/article/c181b1ff46b7443db2f36407f66814a2 |
op_doi |
https://doi.org/10.1186/1475-2875-4-49 |
container_title |
Malaria Journal |
container_volume |
4 |
container_issue |
1 |
container_start_page |
49 |
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1766341427472629760 |