Cuticular lipid diversification in Lasiommata megera and Lasiommata paramegaera: the influence of species, sex, and population (Lepidoptera: Nymphalidae)

Dapporto, Leonardo

doi:10.1111/j.1095-8312.2007.00833.x

Cited by 30 publications

(17 citation statements)

References 34 publications

(59 reference statements)

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“…Cuticular lipids have been implicated in the mate recognition process of several insect species (Tregenza et al ., 2000; Dapporto, 2007). The differentiation in the NIR spectra observed for individuals feeding on Gutierrezia and Solidago suggests the possibility of host‐based variation in some chemical components of the cuticle in the two insect forms, which are not yet specified.…”

Section: Discussionmentioning

confidence: 99%

Divergent host plant adaptation drives the evolution of sexual isolation in the grasshopper Hesperotettix viridis (Orthoptera: Acrididae) in the absence of reinforcement

Grace

Brown

Dowell

et al. 2010

Biological Journal of the Linnean Society

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Early stages of lineage divergence in insect herbivores are often related to shifts in host plant use and divergence in mating capabilities, which may lead to sexual isolation of populations of herbivorous insects. We examined host preferences, degree of differentiation in mate choice, and divergence in cuticular morphology using near-infrared spectroscopy in the grasshopper Hesperotettix viridis aiming to understand lineage divergence. In Kansas (USA), H. viridis is an oligophagous species feeding on Gutierrezia and Solidago host species. To identify incipient mechanisms of lineage divergence and isolation, we compared host choice, mate choice, and phenotypic divergence among natural grasshopper populations in zones of contact with populations encountering only one of the host species. A significant host-based preference from the two host groups was detected in host-paired feeding preference studies. No-choice mate selection experiments revealed a preference for individuals collected from the same host species independent of geographic location, and little mating was observed between individuals collected from different host species. Female mate choice tests between males from the two host species resulted in 100% fidelity with respect to host use. Significant differentiation in colour and cuticular composition of individuals from different host plants was observed, which correlated positively with host choice and mate choice. No evidence for reinforcement in the zone of contact was detected, suggesting that divergent selection for host plant use promotes sexual isolation in this species.

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Section: Discussionmentioning

confidence: 99%

Divergent host plant adaptation drives the evolution of sexual isolation in the grasshopper Hesperotettix viridis (Orthoptera: Acrididae) in the absence of reinforcement

Grace

Brown

Dowell

et al. 2010

Biological Journal of the Linnean Society

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“…Disruptive sexual selection against F1 hybrids may thus represents a barrier to gene flow. Differences between L. megera and paramegaera in several characteristics have been highlighted, among which are wing pattern, male genitalia shape, larva and pupa morphology (de Freina 1991; Biermann and Eitschberger 1996; Jutzeler 1998) and cuticular wax composition (Dapporto 2007). The differences in genitalia shape are particularly important in defining species level in Lepidoptera.…”

Section: Discussionmentioning

confidence: 99%

Geometric morphometrics reveal male genitalia differences in theLasiommata megera/paramegaeracomplex (Lepidoptera, Nymphalidae) and the lack of a predicted hybridization area in the Tuscan Archipelago

Dapporto¹

2008

Journal of Zoological Systematics and Evolutionary Research

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Geometric morphometrics reveal male genitalia differences in the Lasiommata megera/paramegaera complex (Lepidoptera, Nymphalidae) and the lack of a predicted hybridization area in the Tuscan Archipelago L. Dapporto AbstractThe recognition of specific demarcation between allopatric populations, as for island endemics, is particularly difficult according to the Biological Concept of Species. However, the recognition of the specific status of island taxa is decisive in evaluating important areas of endemism for conservation purposes. The recent taxonomic inflation of European butterfly species calls into question the validity and objectivity of taxonomic practices, and of databases dependent on them, which are used in biogeography and conservation. In this paper I applied rigorous morphometric analyses instead of visual evaluation to solve the long debated question of whether Lasiommata paramegaera butterfly from Sardinia and Corsica should be considered as a separated entity from the widespread Lasiommata megera. First, I carried out analyses of male genitalia shape comparing the populations from Corsica and Tuscany. Thereafter, I also searched for possible hybridization evidence in the sole area where it is strongly predicted: the Tuscan Archipelago. These islands are located between Tuscany and Corsica and there is large evidence of a continuous immigration of butterflies from these two main sources. I found that Corsican L. paramegaera and Tuscan L. megera can be clearly distinguished on the basis of genitalia shape. Furthermore, the Lasiommata population of each islet clearly maintains the characteristics of one of the two species without evidence of intermediate individuals. In conclusion, I suggest that the two entities should be considered as separate species maintaining their homogeneity by a reduced gene flow across sea, mating avoidance and/or by some depletion of F1 hybrids in developmental or mating success.

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“…, 1990), grasshoppers (Chapman et al. , 1995), butterflies (Dapporto, 2007; Hay‐Roe et al. , 2007), Formica ants (Martin et al.…”

Section: Introductionmentioning

confidence: 99%

Long-term stability of hornet cuticular hydrocarbons facilitates chemotaxonomy using museum specimens

Martin

Zhong

Drijfhout

2009

Biological Journal of the Linnean Society

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Cuticular hydrocarbons are key compounds used for insect chemical communication and their species-specificity makes them of great utility to chemotaxonomists. However, very little is known about their long-term stability in relation to their use as reliable taxonomic tools. We compared the cuticular hydrocarbon profiles of fresh extracts from four hornet (Vespa) species with extracts from specimens that were frozen for 1 year and of those stored in insect display boxes for 20 years. Cuticular hydrocarbon profiles were qualitatively very stable, maintaining their species-specific profiles even after 20 years. The long-term stability of cuticular hydrocarbons in hymenopterans opens up the possibility of using museum collections for chemotaxonomy studies and helping with the delineation of species in difficult groups.

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Cuticular lipid diversification in Lasiommata megera and Lasiommata paramegaera: the influence of species, sex, and population (Lepidoptera: Nymphalidae)

Cited by 30 publications

References 34 publications

Divergent host plant adaptation drives the evolution of sexual isolation in the grasshopper Hesperotettix viridis (Orthoptera: Acrididae) in the absence of reinforcement

Divergent host plant adaptation drives the evolution of sexual isolation in the grasshopper Hesperotettix viridis (Orthoptera: Acrididae) in the absence of reinforcement

Geometric morphometrics reveal male genitalia differences in theLasiommata megera/paramegaeracomplex (Lepidoptera, Nymphalidae) and the lack of a predicted hybridization area in the Tuscan Archipelago

Long-term stability of hornet cuticular hydrocarbons facilitates chemotaxonomy using museum specimens

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