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Wing Morphometry and Acoustic Signals in Sterile and Wild Males: Implications for Mating Success in Ceratitis capitata.

de Souza JM, de Lima-Filho PA, Molina WF, de Almeida LM, de Gouveia MB, de Macêdo FP, Laumann RA, Paranhos BA - ScientificWorldJournal (2015)

Bottom Line: The individuals of Group 3 achieved more matings than those in Group 2.Wild males displayed lower pulse duration, higher intervals between pulses, and higher dominant frequency.Regarding the reproductive success, the morphological differences in the wings' shape between accepted and nonaccepted males are higher in wild males than in the irradiated ones.

View Article: PubMed Central - PubMed

Affiliation: Department of Cellular Biology and Genetics, Bioscience Center, Federal University of Rio Grande do Norte, Campus Universitário, 59078-970 Natal, RN, Brazil.

ABSTRACT
The sterile insect technique (SIT) is widely utilized in the biological control of fruit flies of the family Tephritidae, particularly against the Mediterranean fruit fly. This study investigated the interaction between mating success and morphometric variation in the wings and the production of acoustic signals among three male groups of Ceratitis capitata (Wiedemann): (1) wild males, (2) irradiated with Co-60 (steriles), and (3) irradiated (steriles) and treated with ginger oil. The canonical variate analysis discriminated two groups (males irradiated and males wild), based on the morphological shape of the wings. Among males that emit buzz signals, wild males obtained copulation more frequently than males in Groups 2 and 3. The individuals of Group 3 achieved more matings than those in Group 2. Wild males displayed lower pulse duration, higher intervals between pulses, and higher dominant frequency. Regarding the reproductive success, the morphological differences in the wings' shape between accepted and nonaccepted males are higher in wild males than in the irradiated ones. The present results can be useful in programs using the sterile insect technique for biological control of C. capitata.

No MeSH data available.


Related in: MedlinePlus

Histograms of the first canonical variate axis (CV1) for males C. capitata groups with (black bars and lines, accepted for copulation) and without (gray bars and lines, rejected for copulation) successful copulation using wings' shapes data, in (a) wild, (b) irradiated, and (c) irradiated and treated with ginger oil individuals. The comparison of the wings' morphology from warped outlines is at the right side of each group.
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fig3: Histograms of the first canonical variate axis (CV1) for males C. capitata groups with (black bars and lines, accepted for copulation) and without (gray bars and lines, rejected for copulation) successful copulation using wings' shapes data, in (a) wild, (b) irradiated, and (c) irradiated and treated with ginger oil individuals. The comparison of the wings' morphology from warped outlines is at the right side of each group.

Mentions: The canonical variate analysis of the patterns of wings' shape in wild males of C. capitata revealed significant morphometric divergences (P < 0.01) when compared with the pattern for sterile males (Table 1, Figure 3(a)). Similarly, discriminant function analysis (DFA) between the groups indicated significant differences (P < 0.01). Individuals with and without successful copulation were discriminated by the medial shape of their wings in relation to CV1 axis, which explains 70.04% of the observed variation, as well as in relation to CV2, which explains 15.79% (Figure 4). Morphological differences in the wings of sterile individuals stimulated or not by ginger oil (Groups 2 and 3) were small and not significant (Table 1, Figures 3(b) and 3(c)).


Wing Morphometry and Acoustic Signals in Sterile and Wild Males: Implications for Mating Success in Ceratitis capitata.

de Souza JM, de Lima-Filho PA, Molina WF, de Almeida LM, de Gouveia MB, de Macêdo FP, Laumann RA, Paranhos BA - ScientificWorldJournal (2015)

Histograms of the first canonical variate axis (CV1) for males C. capitata groups with (black bars and lines, accepted for copulation) and without (gray bars and lines, rejected for copulation) successful copulation using wings' shapes data, in (a) wild, (b) irradiated, and (c) irradiated and treated with ginger oil individuals. The comparison of the wings' morphology from warped outlines is at the right side of each group.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4446484&req=5

fig3: Histograms of the first canonical variate axis (CV1) for males C. capitata groups with (black bars and lines, accepted for copulation) and without (gray bars and lines, rejected for copulation) successful copulation using wings' shapes data, in (a) wild, (b) irradiated, and (c) irradiated and treated with ginger oil individuals. The comparison of the wings' morphology from warped outlines is at the right side of each group.
Mentions: The canonical variate analysis of the patterns of wings' shape in wild males of C. capitata revealed significant morphometric divergences (P < 0.01) when compared with the pattern for sterile males (Table 1, Figure 3(a)). Similarly, discriminant function analysis (DFA) between the groups indicated significant differences (P < 0.01). Individuals with and without successful copulation were discriminated by the medial shape of their wings in relation to CV1 axis, which explains 70.04% of the observed variation, as well as in relation to CV2, which explains 15.79% (Figure 4). Morphological differences in the wings of sterile individuals stimulated or not by ginger oil (Groups 2 and 3) were small and not significant (Table 1, Figures 3(b) and 3(c)).

Bottom Line: The individuals of Group 3 achieved more matings than those in Group 2.Wild males displayed lower pulse duration, higher intervals between pulses, and higher dominant frequency.Regarding the reproductive success, the morphological differences in the wings' shape between accepted and nonaccepted males are higher in wild males than in the irradiated ones.

View Article: PubMed Central - PubMed

Affiliation: Department of Cellular Biology and Genetics, Bioscience Center, Federal University of Rio Grande do Norte, Campus Universitário, 59078-970 Natal, RN, Brazil.

ABSTRACT
The sterile insect technique (SIT) is widely utilized in the biological control of fruit flies of the family Tephritidae, particularly against the Mediterranean fruit fly. This study investigated the interaction between mating success and morphometric variation in the wings and the production of acoustic signals among three male groups of Ceratitis capitata (Wiedemann): (1) wild males, (2) irradiated with Co-60 (steriles), and (3) irradiated (steriles) and treated with ginger oil. The canonical variate analysis discriminated two groups (males irradiated and males wild), based on the morphological shape of the wings. Among males that emit buzz signals, wild males obtained copulation more frequently than males in Groups 2 and 3. The individuals of Group 3 achieved more matings than those in Group 2. Wild males displayed lower pulse duration, higher intervals between pulses, and higher dominant frequency. Regarding the reproductive success, the morphological differences in the wings' shape between accepted and nonaccepted males are higher in wild males than in the irradiated ones. The present results can be useful in programs using the sterile insect technique for biological control of C. capitata.

No MeSH data available.


Related in: MedlinePlus