Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae)
Within the factors affecting insect tolerance to extreme environmental conditions, insect nutrition, particularly of immature stages, has received insufficient attention. In the present study, we address this gap by investigating the effects of larval nutrition on heat and cold tolerance of adult Ba...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-12-01
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| Series: | Fly |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/19336934.2022.2157161 |
| _version_ | 1797678366464147456 |
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| author | M. Ben-Yosef Y. Altman E. Nemni-Lavi N.T. Papadopoulos D Nestel |
| author_facet | M. Ben-Yosef Y. Altman E. Nemni-Lavi N.T. Papadopoulos D Nestel |
| author_sort | M. Ben-Yosef |
| collection | DOAJ |
| description | Within the factors affecting insect tolerance to extreme environmental conditions, insect nutrition, particularly of immature stages, has received insufficient attention. In the present study, we address this gap by investigating the effects of larval nutrition on heat and cold tolerance of adult Bactrocera zonata – an invasive, polyphagous fruit fly pest. We manipulated the nutritional content in the larval diet by varying the amount of added yeast (2–10% by weight), while maintaining a constant sucrose content. Adults derived from the different larval diets were tested for their tolerance to extreme heat and cold stress. Restricting the amount of yeast reduced the efficacy of the larval diet (i.e. number of pupae produced per g of diet) as well as pupal and adult fresh weight, both being significantly lower for yeast-poor diets. Additionally, yeast restriction during the larval stage (2% yeast diet) significantly reduced the amount of protein but not lipid reserves of newly emerged males and females. Adults maintained after emergence on granulated sugar and water for 10 days were significantly more tolerant to extreme heat (i.e. knock-down time at 42 oC) when reared as larvae on yeast-rich diets (8% and 10% yeast) compared to counterparts developing on a diet containing 2% yeast. Nevertheless, the composition of the larval diet did not significantly affect adult survival following acute cold stress (exposure to −3°C for 2 hrs.). These results are corroborated by previous findings on Drosophilid flies. Possible mechanisms leading to nutrition-based heat-tolerance in flies are discussed. |
| first_indexed | 2024-03-11T22:58:41Z |
| format | Article |
| id | doaj.art-7b384c3846b140b7bdcd4fcdd6a38e95 |
| institution | Directory Open Access Journal |
| issn | 1933-6934 1933-6942 |
| language | English |
| last_indexed | 2024-03-11T22:58:41Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Fly |
| spelling | doaj.art-7b384c3846b140b7bdcd4fcdd6a38e952023-09-21T15:17:01ZengTaylor & Francis GroupFly1933-69341933-69422023-12-0117110.1080/19336934.2022.21571612157161Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae)M. Ben-Yosef0Y. Altman1E. Nemni-Lavi2N.T. Papadopoulos3D Nestel4Institute of Plant Protection, Agricultural Research OrganizationInstitute of Plant Protection, Agricultural Research OrganizationInstitute of Plant Protection, Agricultural Research OrganizationUniversity of ThessalyInstitute of Plant Protection, Agricultural Research OrganizationWithin the factors affecting insect tolerance to extreme environmental conditions, insect nutrition, particularly of immature stages, has received insufficient attention. In the present study, we address this gap by investigating the effects of larval nutrition on heat and cold tolerance of adult Bactrocera zonata – an invasive, polyphagous fruit fly pest. We manipulated the nutritional content in the larval diet by varying the amount of added yeast (2–10% by weight), while maintaining a constant sucrose content. Adults derived from the different larval diets were tested for their tolerance to extreme heat and cold stress. Restricting the amount of yeast reduced the efficacy of the larval diet (i.e. number of pupae produced per g of diet) as well as pupal and adult fresh weight, both being significantly lower for yeast-poor diets. Additionally, yeast restriction during the larval stage (2% yeast diet) significantly reduced the amount of protein but not lipid reserves of newly emerged males and females. Adults maintained after emergence on granulated sugar and water for 10 days were significantly more tolerant to extreme heat (i.e. knock-down time at 42 oC) when reared as larvae on yeast-rich diets (8% and 10% yeast) compared to counterparts developing on a diet containing 2% yeast. Nevertheless, the composition of the larval diet did not significantly affect adult survival following acute cold stress (exposure to −3°C for 2 hrs.). These results are corroborated by previous findings on Drosophilid flies. Possible mechanisms leading to nutrition-based heat-tolerance in flies are discussed.http://dx.doi.org/10.1080/19336934.2022.2157161bactrocera zonatathermal tolerancetmaxenvironmental stressnutritional statecold tolerance |
| spellingShingle | M. Ben-Yosef Y. Altman E. Nemni-Lavi N.T. Papadopoulos D Nestel Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae) Fly bactrocera zonata thermal tolerance tmax environmental stress nutritional state cold tolerance |
| title | Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae) |
| title_full | Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae) |
| title_fullStr | Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae) |
| title_full_unstemmed | Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae) |
| title_short | Larval nutritional-stress and tolerance to extreme temperatures in the peach fruit fly, Bactrocera zonata (Diptera: Tephritidae) |
| title_sort | larval nutritional stress and tolerance to extreme temperatures in the peach fruit fly bactrocera zonata diptera tephritidae |
| topic | bactrocera zonata thermal tolerance tmax environmental stress nutritional state cold tolerance |
| url | http://dx.doi.org/10.1080/19336934.2022.2157161 |
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