Seasonal variation in elytral colour polymorphism in Harmonia axyridis (the ladybird beetle): the role of non-random mating

Osawa, Naoya; Nishida, Takayoshi

doi:10.1038/hdy.1992.129

Cited by 106 publications

(93 citation statements)

References 35 publications

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“…Forms succinea, conspicua and spectabilis (according Osawa & Nishida, 1992;Mitchie et al, 2010) were found over the sampling period. The form succinea was the prevalent over the whole period and represented between 73 to 81% of the individuals (Fig.…”

Section: Overwintering Sitesmentioning

confidence: 99%

Characterization of a newly established aggregation of the invasive ladybeetle Harmonia axyridis and current status of the invader in Spain

Pons¹,

Roca²,

Lumbierres³

et al. 2015

Span. j. agric. res.

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The multicoloured Asian ladybeetle, Harmonia axyridis (Pallas), an invasive biocontrol agent introduced in North and South America, as well as in Europe for aphid control, drastically affected assemblages of native coccinellid species, local communities and people. Although the insect is common in several European countries and it was released in Spain for aphid control in 1995, no evidence of population establishment has been reported until 2011. In the present paper, 1) we summarize the records of the invasive ladybeetle in Spain and provide numerous new mentions, and 2) we follow for the first time an overwintering aggregation from autumn to spring and characterize some individual features which allow us to determine its phenology of the establishment and spreading. The results establish clearly that: 1) H. axyridis is (until now) restricted to Catalonia (NE Spain) but the invading process is in progress and the insect is able to occupy different habitats; 2) the ladybeetle overwinters successfully in Spain without significant natural mortality or parasitism; 3) the form succinea represents 73-81% of the overwintering individuals, and 4) the invasion takes probably its origin from Southern France. The potential impact of the invasion by H. axyridis in Spain is discussed.

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Section: Overwintering Sitesmentioning

confidence: 99%

Characterization of a newly established aggregation of the invasive ladybeetle Harmonia axyridis and current status of the invader in Spain

Pons¹,

Roca²,

Lumbierres³

et al. 2015

Span. j. agric. res.

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“…Many modifications, such as elytral patterns, body shape and body size may be adaptive through imparting increased tolerance to adverse conditions (Dobzhansky 1933;Soares et al 2003a). The relative frequency of phenotypes seems to be related to geographical and seasonal factors (Tan 1946(Tan , 1949Komai 1956;Iablokoff-Khnzorian 1982;Osawa and Nishida 1992), suggesting that some phenotypes may be favorably selected in different parts of the ecosystem or at different times. Thus the genetic polymorphism in H. axyridis seems to be the strategy adopted for facing different habitats at different times.…”

Section: Harmonia Axyridis: a Super Invader?mentioning

confidence: 99%

Harmonia axyridis: What will stop the invader?

Soares

Borges

et al. 2007

BioControl

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In recent years Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) has become a very popular insect among biological control practitioners and scientists, not only for its potential to be an efficient biological control agent but also because it is considered invasive. Individuals of this species were deliberately introduced into several countries for biological control of different arthropods pests. However the predator itself became an invasive species, affecting the dynamics and composition of several guilds through direct or indirect interactions with established species, including intraguild predation. In this paper we discuss the reasons why the species has a high invasiveness and what are the limits to invasion by this species. It is not clear if the invasiveness of the beetle is linked to its biological, ecological and behavioural abilities, or to other factors such as invasibility and interactions between the invaders, the noninvaders, and the habitat, which may in part explain the reasons of its success and help us to answer the question ''what will stop the invader?'' We also discuss the reason for the absence of the predator in the Azores islands. Despite the intentional introduction of H. axyridis in the Azores and the high number of individuals released, there are no records of this species in the wild, despite recent extensive sampling effort. In this paper we discuss the reasons for the apparent failure or the delay in establishment of the predator. One factor which may hamper the establishment of H. axyridis in some of the Azores islands is the absence of winter

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“…Another factor might be a difference in the activity of the males of different forms. Osawa & Nishida (1992) studied mating preference in a Kyoto population of the polymorphic Asian species, H. axyridis. In this population, there occur three melanic forms (axyridis, spectabilis and conspicua) and one nonmelanic form (succinea).…”

Section: Preferential Mating In Adalia Bipunctatamentioning

confidence: 99%

Sexual activity in Coccinellidae (Coleoptera): a review

Hodek¹,

Ceryngier²

2000

Eur. J. Entomol.

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Abstract. Although there are few studies of the sexual life of coccinellids these phenomena have attracted the interest of isolated groups of coccinellidologists. Probably the most important finding is that at least some coccinellid species (Adalia bipunctata and Harmonia axyridis) do not mate at random with the females prefering certain males. This phenomenon was first observed in Adalia bipunctata by Lusis and then studied in detail by Majerus, O'Donald, de Jong and others. In Japan, Harmonia axyridis was similarly studied by Osawa and Ueno. While the former author found that in this species (as in A. bipunctata) the colour of the elytra is most important in mate choice by females, the latter stresses that size and activity are important. Sperm competition is another interesting phenomenon, most often the sperm of the last male fertilizes the eggs (Ueno, Katakura). Obata and Hidaka have contributed in an important way to elucidating the function of the spermatophore in mating. The studies by Hodek and Ceryngier recorded the matura tion and regression of testicular follicles and the relation of mating activity to diapause in four coccinellid species. In contrast to females, where induction of diapause prevents maturation of ovaries, in diapausing males the tissue of testicular follicles remains active until the temperatures decrease in late autumn. Dissection of spermathecae revealed principal difference in autumn mating activity between Coccinella septempunctata, in which 40-60% of the beetles mated before hibernation and Ceratomegilla (syn. Semiadalia) undecimnotata, which does not mate in autumn.

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Seasonal variation in elytral colour polymorphism in Harmonia axyridis (the ladybird beetle): the role of non-random mating

Cited by 106 publications

References 35 publications

Characterization of a newly established aggregation of the invasive ladybeetle Harmonia axyridis and current status of the invader in Spain

Characterization of a newly established aggregation of the invasive ladybeetle Harmonia axyridis and current status of the invader in Spain

Harmonia axyridis: What will stop the invader?

Sexual activity in Coccinellidae (Coleoptera): a review

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