Gregarious pupation act as a defensive mechanism against cannibalism and intraguild predation

Roberge, Claudia; Fréchette, Bruno; Labrie, Geneviève; Dumont, François; Lucas, Éric

doi:10.1111/1744-7917.12209

Cited by 8 publications

(5 citation statements)

References 45 publications

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“…It is unclear whether behavioral/chemical traits associated with aggregation behavior are promoted as a result of the invasion process. Finally, gregarious pupation may act as a defensive mechanism for H. axyridis (Roberge et al, 2016). In the field, H. axyridis was the coccinellid species showing the highest rate of gregarious pupation events.…”

Section: Aggregationmentioning

confidence: 99%

Behavioral and Immunological Features Promoting the Invasive Performance of the Harlequin Ladybird Harmonia axyridis

2017

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The harlequin ladybird Harmonia axyridis is now established as a model to test hypotheses explaining why some species become successfully invasive, while others, even closely related ones, do not. In this review, we evaluate behavioral and immunological features that may play a role in the invasive performance of this model species. We discuss the behavioral traits and associated semiochemicals that promote the invasive success of H. axyridis. In particular, we consider (1) the aggregative behavior and the particular role of long-chain hydrocarbons; (2) the importance of sex pheromones and non-volatile chemicals in mate location and selection; (3) the use of allelochemicals for prey location; and (4) the nature of chemicals that protect against natural enemies. We also highlight the superior immune system of H. axyridis, which encompasses a broader spectrum of antimicrobial peptides (and higher inducible expression levels) compared with native ladybird beetles such as Adalia bipunctata and Coccinella septempunctata. The chemical defense compound harmonine and the antimicrobial peptides are thought to confer resistance against the abundant microsporidia carried by H. axyridis. These parasites can infect and kill native ladybird species feeding on H. axyridis eggs or larvae, supporting the hypothesis that intraguild predation plays a role in the ability of H. axyridis to outcompete native ladybird species in newly-colonized areas.

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Section: Aggregationmentioning

confidence: 99%

Behavioral and Immunological Features Promoting the Invasive Performance of the Harlequin Ladybird Harmonia axyridis

2017

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“…De Vos et al 2015), insects (e.g. Roberge et al 2016), and fishes (e.g. Hamilton 1971;Pitcher 1986;Ioannou et al 2008).…”

Section: Why Are Dugongs Forming Herds Over the Fore Reef Shelf In Ca...mentioning

confidence: 99%

Temporal changes in habitat use by dugongs in a spatially restricted coral reef environment

Cleguer,

Garrigue,

Fuentes

et al. 2024

Pacific Conserv. Biol.

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Context The dynamic habitat use by dugongs (Dugong dugon) in small coral reef lagoon systems spatially limited by tides is not well understood and has hampered adaptive management. Aims We investigated how dugongs locally used a high conservation value coral-reef lagoon system during different seasons and tides to support local management. Methods We conducted local-scale aerial surveys to document the seasonal and tidal changes in the distribution and number of dugongs over seagrass and non-seagrass coral reef habitats in a small lagoon in New Caledonia. The surveys were conducted fortnightly over 18 months in different seasons and at different tides. Temperature loggers and existing local footage of dugong herding behaviour were used to study the habitat use and behaviour of the animals in the area. Key results More dugongs were sighted in Cap Goulvain during the cool season than during the warm season. As tides restricted access to the intertidal seagrass meadows and during the cool season, more dugongs were sighted outside the lagoon on the fore reef shelf outside the lagoon. Dugongs were resting in large aggregations during their use of this non-seagrass habitat. Conclusions Our study emphasises the importance of non-seagrass habitats for dugongs in spatially restricted coral reef environments as well as the importance of considering outer lagoon habitats as key dugong management areas. This study also adds evidence of behavioural thermoregulation in dugongs. Implications The development of dynamic management strategies is essential, especially where different habitats should be protected at different times of the year.

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“…One of them is aggregation behavior, which appears among adults and pupae H. axyridis . It has been proved that gregarious pupation decreases mortality in pupae (Roberge et al, 2016) and that adult beetles can aggregate both in wintering and non-wintering conditions (Durieux et al, 2015). Additionally, it was documented that individuals of this species follow objects with highly contrasting colors (Nalepa et al, 2005).…”

Section: Agronomy and Ecologymentioning

confidence: 99%

Beetles as Model Organisms in Physiological, Biomedical and Environmental Studies – A Review

et al. 2019

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Model organisms are often used in biological, medical and environmental research. Among insects, Drosophila melanogaster, Galleria mellonella, Apis mellifera, Bombyx mori, Periplaneta americana , and Locusta migratoria are often used. However, new model organisms still appear. In recent years, an increasing number of insect species has been suggested as model organisms in life sciences research due to their worldwide distribution and environmental significance, the possibility of extrapolating research studies to vertebrates and the relatively low cost of rearing. Beetles are the largest insect order, with their representative – Tribolium castaneum – being the first species with a completely sequenced genome, and seem to be emerging as new potential candidates for model organisms in various studies. Apart from T. castaneum , additional species representing various Coleoptera families, such as Nicrophorus vespilloides, Leptinotarsa decemlineata, Coccinella septempunctata, Poecilus cupreus, Tenebrio molitor and many others, have been used. They are increasingly often included in two major research aspects: biomedical and environmental studies. Biomedical studies focus mainly on unraveling mechanisms of basic life processes, such as feeding, neurotransmission or activity of the immune system, as well as on elucidating the mechanism of different diseases (neurodegenerative, cardiovascular, metabolic, or immunological) using beetles as models. Furthermore, pharmacological bioassays for testing novel biologically active substances in beetles have also been developed. It should be emphasized that beetles are a source of compounds with potential antimicrobial and anticancer activity. Environmental-based studies focus mainly on the development and testing of new potential pesticides of both chemical and natural origin. Additionally, beetles are used as food or for their valuable supplements. Different beetle families are also used as bioindicators. Another important research area using beetles as models is behavioral ecology studies, for instance, parental care. In this paper, we review the current knowledge regarding beetles as model organisms and their practical application in various fields of life science.

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Gregarious pupation act as a defensive mechanism against cannibalism and intraguild predation

Cited by 8 publications

References 45 publications

Behavioral and Immunological Features Promoting the Invasive Performance of the Harlequin Ladybird Harmonia axyridis

Behavioral and Immunological Features Promoting the Invasive Performance of the Harlequin Ladybird Harmonia axyridis

Temporal changes in habitat use by dugongs in a spatially restricted coral reef environment

Beetles as Model Organisms in Physiological, Biomedical and Environmental Studies – A Review

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