Preferential Attraction of Oviposition-Ready Oriental Fruit Flies to Host Fruit Odor over Protein Food Odor
Olfaction plays a key role in the location of food and oviposition resources by tephritid fruit flies. Adult females, including oriental fruit fly, <i>Bactrocera dorsalis</i>, can sustain egg production throughout their lives provided they obtain sufficient protein. Thus, preferential at...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/12/10/909 |
| _version_ | 1797514298300301312 |
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| author | Gwang-Hyun Roh Paul E. Kendra Dong H. Cha |
| author_facet | Gwang-Hyun Roh Paul E. Kendra Dong H. Cha |
| author_sort | Gwang-Hyun Roh |
| collection | DOAJ |
| description | Olfaction plays a key role in the location of food and oviposition resources by tephritid fruit flies. Adult females, including oriental fruit fly, <i>Bactrocera dorsalis</i>, can sustain egg production throughout their lives provided they obtain sufficient protein. Thus, preferential attraction to food or oviposition sites (host fruit) will depend on a fly’s particular physiological state. In this study, laboratory bioassays were conducted with mature, mated <i>B. dorsalis</i> (provisioned protein and sugar <i>ad libitum</i>) to evaluate attraction to traps baited with torula yeast versus six host fruit sources (guava, guava juice, mango, orange, Surinam cherry, or white sapote). Females that preferred fruit laid a significant number of eggs around the trap entrance (average 405 eggs/fly), while almost no eggs were laid by females that preferred yeast (0.5 and 1.3 eggs/fly on two occasions). Similar results were observed in a bioassay using headspace extracts of guava juice and torula yeast, supporting olfactory-mediated responses. When individual females were allowed to oviposit in guava juice traps 0–24 h after a choice test, 45.8% of females that chose guava juice laid eggs (average 14.7 eggs/fly), compared with 27.5% that chose yeast (average 6.5 eggs/fly). Dissections indicated that females with a preference for guava juice had an egg load 2.4 times greater than females that preferred yeast. These results suggest there is an olfactory-based behavioral switch in preference from protein to host odors when female <i>B. dorsalis</i> are oviposition-ready. We discuss the implications of our findings for practical behavioral management and detection programs for <i>B. dorsalis</i>. |
| first_indexed | 2024-03-10T06:29:52Z |
| format | Article |
| id | doaj.art-75afbc88e22f4c99a26c0d28dd881828 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T06:29:52Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-75afbc88e22f4c99a26c0d28dd8818282023-11-22T18:39:27ZengMDPI AGInsects2075-44502021-10-01121090910.3390/insects12100909Preferential Attraction of Oviposition-Ready Oriental Fruit Flies to Host Fruit Odor over Protein Food OdorGwang-Hyun Roh0Paul E. Kendra1Dong H. Cha2USDA-ARS, US Pacific Basin Agricultural Research Center, Hilo, HI 96720, USAUSDA-ARS, Subtropical Horticulture Research Station, Miami, FL 33158, USAUSDA-ARS, US Pacific Basin Agricultural Research Center, Hilo, HI 96720, USAOlfaction plays a key role in the location of food and oviposition resources by tephritid fruit flies. Adult females, including oriental fruit fly, <i>Bactrocera dorsalis</i>, can sustain egg production throughout their lives provided they obtain sufficient protein. Thus, preferential attraction to food or oviposition sites (host fruit) will depend on a fly’s particular physiological state. In this study, laboratory bioassays were conducted with mature, mated <i>B. dorsalis</i> (provisioned protein and sugar <i>ad libitum</i>) to evaluate attraction to traps baited with torula yeast versus six host fruit sources (guava, guava juice, mango, orange, Surinam cherry, or white sapote). Females that preferred fruit laid a significant number of eggs around the trap entrance (average 405 eggs/fly), while almost no eggs were laid by females that preferred yeast (0.5 and 1.3 eggs/fly on two occasions). Similar results were observed in a bioassay using headspace extracts of guava juice and torula yeast, supporting olfactory-mediated responses. When individual females were allowed to oviposit in guava juice traps 0–24 h after a choice test, 45.8% of females that chose guava juice laid eggs (average 14.7 eggs/fly), compared with 27.5% that chose yeast (average 6.5 eggs/fly). Dissections indicated that females with a preference for guava juice had an egg load 2.4 times greater than females that preferred yeast. These results suggest there is an olfactory-based behavioral switch in preference from protein to host odors when female <i>B. dorsalis</i> are oviposition-ready. We discuss the implications of our findings for practical behavioral management and detection programs for <i>B. dorsalis</i>.https://www.mdpi.com/2075-4450/12/10/909egg loadfemale attractionfood choicehost choiceinvasive pestphysiological status |
| spellingShingle | Gwang-Hyun Roh Paul E. Kendra Dong H. Cha Preferential Attraction of Oviposition-Ready Oriental Fruit Flies to Host Fruit Odor over Protein Food Odor Insects egg load female attraction food choice host choice invasive pest physiological status |
| title | Preferential Attraction of Oviposition-Ready Oriental Fruit Flies to Host Fruit Odor over Protein Food Odor |
| title_full | Preferential Attraction of Oviposition-Ready Oriental Fruit Flies to Host Fruit Odor over Protein Food Odor |
| title_fullStr | Preferential Attraction of Oviposition-Ready Oriental Fruit Flies to Host Fruit Odor over Protein Food Odor |
| title_full_unstemmed | Preferential Attraction of Oviposition-Ready Oriental Fruit Flies to Host Fruit Odor over Protein Food Odor |
| title_short | Preferential Attraction of Oviposition-Ready Oriental Fruit Flies to Host Fruit Odor over Protein Food Odor |
| title_sort | preferential attraction of oviposition ready oriental fruit flies to host fruit odor over protein food odor |
| topic | egg load female attraction food choice host choice invasive pest physiological status |
| url | https://www.mdpi.com/2075-4450/12/10/909 |
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