Artificial Feeding and Laboratory Rearing of Endangered Saproxylic Beetles as a Tool for Insect Conservation
| Autor: | Mattia Rovito, Jakub Horák, Teresa Bonacci, Pietro Brandmayr |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
AcademicSubjects/SCI01382 Acanthocinus griseus Conservation of Natural Resources ved/biology.organism_classification_rank.species Endangered species Zoology 010603 evolutionary biology 01 natural sciences Lucilia Predation Cucujus cinnaberinus life cycle Animals Research Articles Rhagium inquisitor Life Cycle Stages biology ved/biology Nutritional Support Lasius Endangered Species conservation Cucujus haematodes General Medicine Feeding Behavior biology.organism_classification Diet Coleoptera 010602 entomology Insect Science Threatened species diet preference |
| Zdroj: | Journal of Insect Science |
| ISSN: | 1536-2442 |
| Popis: | Conservation of threatened animals is frequently limited by lack of knowledge about their ecological preferences, and often artificial feeding is one of the few chances to save endangered species. We investigated the possibility to artificially feed two endangered flat bark beetles dependent on dead wood for their diet—namely, Cucujus cinnaberinus (Scopoli, 1763) and Cucujus haematodes Erichson, 1845—by examining their dietary preferences, life cycle duration, and survival in laboratory conditions. Individuals of the two species were caught in the wild and larvae and adults were fed in laboratory conditions by live or dead prey. Three species of saproxylic beetles: two cerambycids (Acanthocinus griseus Fabricius, 1793 and Rhagium inquisitor Linnaeus, 1758), one scolytid (Ips sexdentatus Börner, 1776) one tenebrionid (Tenebrio molitor (Linnaeus, 1758)) one dipteran (Lucilia sericata (Meigen, 1826)) and one ant (Lasius sp. Fabricius, 1804) were used as prey, with minced meat as a control. Our results indicated high survival and no difference in prey choice between the two flat beetle species. Larvae and adults preferred dead prey, but no significant preference was detected among dead prey taxa, supporting the hypothesis that the two species are opportunistic scavengers. Comparing data with previous results, both species and their developmental stages should be classified as obligate saproxylic organisms with preference to the dead and decaying organic material. Successful artificial feeding and rearing of these endangered species, followed by the release in the wild through rescue or reintroduction programs, therefore appear relevant for their protection and future conservation. Graphical Abstract • We observed high survival of two endangered saproxylic beetles Cucujus cinnaberinus and C. haematodes during artificial feeding.• There was no difference in prey choice between these two flat beetle species.• Larvae and adults preferred dead prey and no significant preference was detected among dead prey taxa. |
| Databáze: | OpenAIRE |
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