Nitrogen fertilizer decreases survival and reproduction of female locusts by increasing plant protein to carbohydrate ratio
© 2020 British Ecological Society..
Nitrogen limitation theory predicts that terrestrial plants should benefit from nitrogen inputs and that herbivores should benefit from subsequent higher plant protein contents. While this pattern has generally been supported, some herbivorous insects have shown preference and higher performance on low protein (p), high carbohydrate (c) diets as juveniles. However, little is known about the effects on reproduction in adults. Using nitrogen fertilizer, we demonstrate that high plant p:c has negative effects on Senegalese locust (Orthoptera: Oedaeleus senegalensis) reproduction and survival in an agroecological setting. For this, we measured p:c in millet plants Pennisetum glaucum that received two levels of fertilizer (high and moderate) and a control, then we caged locusts on these plants for 2 weeks. In the laboratory, we gave locusts the choice between untreated millet leaves and leaves that received one of the two fertilization treatment. We found that fertilization increased p:c ratio in a concentration-dependent fashion. We counted the number of locusts alive over the course of 2 weeks and showed that fewer females survived on fertilized plants than on control plants. Females that ate plants from the high fertilization treatment laid lighter eggs. Finally, we showed that female locusts prefer unfertilized plants to plants with a high p:c. We hypothesize that this pattern will apply broadly to species that have extensive carbohydrate needs, such as long-distance migrators. Because many ecological studies focus primarily on nitrogen or protein, and fail to consider carbohydrates, this study has important implications for how ecologists consider nutrient limitation of primary consumers in ecosystems globally.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:89 |
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| Enthalten in: |
The Journal of animal ecology - 89(2020), 10 vom: 03. Okt., Seite 2214-2221 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Le Gall, Marion [VerfasserIn] |
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| Links: |
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| Themen: |
Carbohydrates |
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| Anmerkungen: |
Date Completed 12.04.2021 Date Revised 12.04.2021 published: Print-Electronic Dryad: 10.5061/dryad.9cnp5hqfk Citation Status MEDLINE |
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| doi: |
10.1111/1365-2656.13288 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM313191646 |
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| 245 | 1 | 0 | |a Nitrogen fertilizer decreases survival and reproduction of female locusts by increasing plant protein to carbohydrate ratio |
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| 500 | |a Dryad: 10.5061/dryad.9cnp5hqfk | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2020 British Ecological Society. | ||
| 520 | |a Nitrogen limitation theory predicts that terrestrial plants should benefit from nitrogen inputs and that herbivores should benefit from subsequent higher plant protein contents. While this pattern has generally been supported, some herbivorous insects have shown preference and higher performance on low protein (p), high carbohydrate (c) diets as juveniles. However, little is known about the effects on reproduction in adults. Using nitrogen fertilizer, we demonstrate that high plant p:c has negative effects on Senegalese locust (Orthoptera: Oedaeleus senegalensis) reproduction and survival in an agroecological setting. For this, we measured p:c in millet plants Pennisetum glaucum that received two levels of fertilizer (high and moderate) and a control, then we caged locusts on these plants for 2 weeks. In the laboratory, we gave locusts the choice between untreated millet leaves and leaves that received one of the two fertilization treatment. We found that fertilization increased p:c ratio in a concentration-dependent fashion. We counted the number of locusts alive over the course of 2 weeks and showed that fewer females survived on fertilized plants than on control plants. Females that ate plants from the high fertilization treatment laid lighter eggs. Finally, we showed that female locusts prefer unfertilized plants to plants with a high p:c. We hypothesize that this pattern will apply broadly to species that have extensive carbohydrate needs, such as long-distance migrators. Because many ecological studies focus primarily on nitrogen or protein, and fail to consider carbohydrates, this study has important implications for how ecologists consider nutrient limitation of primary consumers in ecosystems globally | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, U.S. Gov't, Non-P.H.S. | |
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| 650 | 4 | |a carbohydrates | |
| 650 | 4 | |a herbivory | |
| 650 | 4 | |a locust | |
| 650 | 4 | |a macronutrients | |
| 650 | 4 | |a nutrition | |
| 650 | 4 | |a protein | |
| 650 | 4 | |a reproduction | |
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| 650 | 7 | |a Fertilizers |2 NLM | |
| 650 | 7 | |a Plant Proteins |2 NLM | |
| 650 | 7 | |a Nitrogen |2 NLM | |
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| 700 | 1 | |a Thompson, Natalia |e verfasserin |4 aut | |
| 700 | 1 | |a Beye, Alioune |e verfasserin |4 aut | |
| 700 | 1 | |a Cease, Arianne J |e verfasserin |4 aut | |
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