Big baby, little mother: Tsetse flies are exceptions to the juvenile small size principle

Haines Lee R., Vale Glyn A., Barreaux Antoine, Ellstrand Norman C., Hargrove John W., English Sinead. 2020. Big baby, little mother: Tsetse flies are exceptions to the juvenile small size principle. BioEssays, 42 (11):2000049, 6 p.

Quartile : Q1, Sujet : BIOLOGY / Quartile : Q2, Sujet : BIOCHEMISTRY & MOLECULAR BIOLOGY

Résumé : While across the animal kingdom offspring are born smaller than their parents, notable exceptions exist. Several dipteran species belonging to the Hippoboscoidea superfamily can produce offspring larger than themselves. In this essay, the blood-feeding tsetse is focused on. It is suggested that the extreme reproductive strategy of this fly is enabled by feeding solely on highly nutritious blood, and producing larval offspring that are soft and malleable. This immense reproductive expenditure may have evolved to avoid competition with other biting flies. Tsetse also transmit blood-borne parasites that cause the fatal diseases called African trypanosomiases. It is discussed how tsetse life history and reproductive strategy profoundly influence the type of vector control interventions used to reduce fly populations. In closing, it is argued that the unusual life history of tsetse warrants their preservation in the areas where human and animal health is not threatened.

Mots-clés Agrovoc : vecteur de maladie, Glossina, transmission des maladies, Glossinidae, contrôle de maladies, distribution géographique, lutte anti-insecte, bétail, Trypanosoma, lutte biologique, hématophagie, lâcher d'insectes stériles, cycle de développement, lutte antiravageur

Mots-clés géographiques Agrovoc : Afrique

Mots-clés libres : Glossinidae, Life history traits, Maternal allocation, Reproductive strategy, Vector control, Vector ecology, Viviparity

Agences de financement hors UE : Biotechnology and Biological Sciences Research Council

Auteurs et affiliations

• Haines Lee R., Liverpool School of Tropical Medicine (GBR) - auteur correspondant
• Vale Glyn A., University of Greenwich (GBR)
• Barreaux Antoine, University of Bristol (GBR) ORCID: 0000-0001-5822-761X
• Ellstrand Norman C., UC (USA)
• Hargrove John W., Stellenbosch University (ZAF)
• English Sinead, University of Bristol (GBR) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/609726/)

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