Provision of small sterile eggs is a circumstance-dependent maternal investment in sibling cannibalism in the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae)
Many aphidophagous ladybird beetles lay clusters of eggs and sibling cannibalism occurs at hatching. Larvae that hatch early tend to cannibalize undeveloped eggs and those that hatch late. The cannibalized eggs, especially those that are sterile, represent a maternal investment in the cannibal and a...
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| Format: | Article |
| Language: | English |
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Institute of Entomology, Biology Centre, Czech Academy of Science
2022-02-01
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| Series: | European Journal of Entomology |
| Subjects: | |
| Online Access: | https://www.eje.cz/artkey/eje-202201-0014_provision_of_small_sterile_eggs_is_a_circumstance-dependent_maternal_investment_in_sibling_cannibalism_in_the_l.php |
| _version_ | 1811168069846827008 |
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| author | Naoya OSAWA |
| author_facet | Naoya OSAWA |
| author_sort | Naoya OSAWA |
| collection | DOAJ |
| description | Many aphidophagous ladybird beetles lay clusters of eggs and sibling cannibalism occurs at hatching. Larvae that hatch early tend to cannibalize undeveloped eggs and those that hatch late. The cannibalized eggs, especially those that are sterile, represent a maternal investment in the cannibal and are regarded as "trophic" eggs, which increase their chances of surviving. The characteristics of cannibalized eggs, however, are poorly studied. In this study, I determined the sizes of eggs that developing and undeveloped eggs within egg clusters of Harmonia axyridis (Coleoptera: Coccinellidae). Developing eggs were significantly larger (on average 3.45% larger) than the undeveloped sterile ones, which were mainly small. Furthermore, the hatchability of eggs was also significantly associated with their size, inclusive of the maternal effects. These results indicate that the production of relatively small sterile eggs functions as circumstance-dependent maternal investment in improving the survival of the first instar larvae to hatch in each egg cluster. |
| first_indexed | 2024-04-10T16:20:54Z |
| format | Article |
| id | doaj.art-02c73832af264fa3a630be8405e684a4 |
| institution | Directory Open Access Journal |
| issn | 1210-5759 1802-8829 |
| language | English |
| last_indexed | 2024-04-10T16:20:54Z |
| publishDate | 2022-02-01 |
| publisher | Institute of Entomology, Biology Centre, Czech Academy of Science |
| record_format | Article |
| series | European Journal of Entomology |
| spelling | doaj.art-02c73832af264fa3a630be8405e684a42023-02-09T13:52:51ZengInstitute of Entomology, Biology Centre, Czech Academy of ScienceEuropean Journal of Entomology1210-57591802-88292022-02-01119113313910.14411/eje.2022.014eje-202201-0014Provision of small sterile eggs is a circumstance-dependent maternal investment in sibling cannibalism in the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae)Naoya OSAWA0Laboratory of Forest Ecology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan; e-mail: osawa.naoya.3z@kyoto-u.ac.jpMany aphidophagous ladybird beetles lay clusters of eggs and sibling cannibalism occurs at hatching. Larvae that hatch early tend to cannibalize undeveloped eggs and those that hatch late. The cannibalized eggs, especially those that are sterile, represent a maternal investment in the cannibal and are regarded as "trophic" eggs, which increase their chances of surviving. The characteristics of cannibalized eggs, however, are poorly studied. In this study, I determined the sizes of eggs that developing and undeveloped eggs within egg clusters of Harmonia axyridis (Coleoptera: Coccinellidae). Developing eggs were significantly larger (on average 3.45% larger) than the undeveloped sterile ones, which were mainly small. Furthermore, the hatchability of eggs was also significantly associated with their size, inclusive of the maternal effects. These results indicate that the production of relatively small sterile eggs functions as circumstance-dependent maternal investment in improving the survival of the first instar larvae to hatch in each egg cluster.https://www.eje.cz/artkey/eje-202201-0014_provision_of_small_sterile_eggs_is_a_circumstance-dependent_maternal_investment_in_sibling_cannibalism_in_the_l.phpaphidophagous ladybird beetlebet-hedgingegg clusteregg sizetrophic egg |
| spellingShingle | Naoya OSAWA Provision of small sterile eggs is a circumstance-dependent maternal investment in sibling cannibalism in the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae) European Journal of Entomology aphidophagous ladybird beetle bet-hedging egg cluster egg size trophic egg |
| title | Provision of small sterile eggs is a circumstance-dependent maternal investment in sibling cannibalism in the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae) |
| title_full | Provision of small sterile eggs is a circumstance-dependent maternal investment in sibling cannibalism in the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae) |
| title_fullStr | Provision of small sterile eggs is a circumstance-dependent maternal investment in sibling cannibalism in the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae) |
| title_full_unstemmed | Provision of small sterile eggs is a circumstance-dependent maternal investment in sibling cannibalism in the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae) |
| title_short | Provision of small sterile eggs is a circumstance-dependent maternal investment in sibling cannibalism in the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae) |
| title_sort | provision of small sterile eggs is a circumstance dependent maternal investment in sibling cannibalism in the ladybird beetle harmonia axyridis coleoptera coccinellidae |
| topic | aphidophagous ladybird beetle bet-hedging egg cluster egg size trophic egg |
| url | https://www.eje.cz/artkey/eje-202201-0014_provision_of_small_sterile_eggs_is_a_circumstance-dependent_maternal_investment_in_sibling_cannibalism_in_the_l.php |
| work_keys_str_mv | AT naoyaosawa provisionofsmallsterileeggsisacircumstancedependentmaternalinvestmentinsiblingcannibalismintheladybirdbeetleharmoniaaxyridiscoleopteracoccinellidae |