Geographic variation in genital morphology of <i>Ciulfina</i> praying mantids

Holwell, Gregory I.

doi:10.1111/j.1469-7998.2008.00475.x

Cited by 28 publications

(23 citation statements)

References 40 publications

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“…While some minor variation due to differences in angle of view will undoubtedly remain, attempts were made to position each genital structure in a similar way so as to reduce this variation. Previously, the same methods have been used successfully to determine fine‐scale variation in the same genital structures between different geographic populations (Holwell, 2008). The relative position of these structures in situ , and their appearance after dissection are shown in Figures 1 and 2, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The dataset resulting from this analysis can then be reduced using principal components analysis to a more manageable series of variables that summarize the shape variation within a sample. Elliptic Fourier analysis has been utilized successfully to analyse shape variation in a number of studies of insect genitalia (Arnqvist, 1998; Monti et al, 2001; Holwell, 2008).…”

Section: Methodsmentioning

confidence: 99%

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Chirally dimorphic male genitalia in praying mantids (Ciulfina: Liturgusidae)

Holwell

Herberstein

2010

Journal of Morphology

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Although male polymorphisms occur widely in nature and have received considerable recent attention from studies of alternative mating strategies, male genital polymorphisms are less well known. Here, we describe a dimorphism in the orientation of the male genitalic complex of the praying mantid genus Ciulfina. Populations of Ciulfina species vary in the proportion of males with dextral (right-oriented) and sinistral (left-oriented) genitalia, ranging from directional asymmetry (single orientation only) to apparent antisymmetry (equal proportions of both orientations). The proportion of dextral males varied between species (C. baldersoni: 46%; C. rentzi: 24%; C. klassi: 100%; C. biseriata: 83%) and between populations. We used elliptic Fourier analysis to quantify shape and size variation between the genitalia of dextral and sinistral males and determined that the two forms were mirror images of one another in two species. We found that the level of mechanical reproductive isolation between heterospecific populations of opposite genital orientation was no greater than that between heterospecific populations with the same orientation or of mixed orientation. Genital orientation therefore did not influence premating isolation between these species, despite complete postmating isolation. The geographic proximity of populations to heterospecifics also showed no particular pattern with respect to genital orientation. These results suggest that reversible trait asymmetry in Ciulfina is not driven by reproductive isolation, and add to the growing evidence against the species isolation hypothesis for rapid genital evolution.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Chirally dimorphic male genitalia in praying mantids (Ciulfina: Liturgusidae)

Holwell

Herberstein

2010

Journal of Morphology

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“…Variation in body size often also influences other traits, such as number and size of offspring (Roff 1992;Stearns 1992;Kiefer et al 2008). Sexual traits may also vary between populations, including bird song (e.g., Podos and Warren 2007), sexual ornaments (e.g., Hill 1994;Møller 1995), testis size (Pitcher and Stutchbury 1998;Dziminski et al 2010), and genital morphology (e.g., Holwell 2008).…”

Section: Introductionmentioning

confidence: 99%

Geographical variation in sperm morphology in the red-winged blackbird (Agelaius phoeniceus)

2010

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Many species differ genetically, physiologically, and morphologically between geographically distinct populations, typically in response to variation in ecological and climatic variables. Little is known, however, about geographical variation in sperm morphology. Sperm morphology is under strong sexual selection, has been shown to evolve rapidly, and often co-varies with other reproductive traits (e.g., testis size or mating system) that differ between populations in some species. The aim of this study was to establish whether sperm morphology varies between populations of the red-winged blackbird (Agelaius phoeniceus), a species with an enormous breeding range and marked interpopulation variation in both body size and mating system. We found (1) highly significant variation in sperm morphology among study sites, (2) a gradual increase in sperm length from the southwest to the northeast of the breeding range, and (3) a strong negative association between sperm length and body size. However, the relationship with the mating system remains unclear. Several hypotheses to explain these patterns are proposed.

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“…The principal component scores obtained can be used as values of morphological features in subsequent analysis, such as analysis of the shapes of biological organs. Elliptic Fourier Analysis (EFA) has been successfully used to analyze shape variation in a wide number of insect genitalia studies [21,23,24,25,26,27,28] The aim of this study was to statistically confirm the statements of Josifov and MartinezCascales [1,8] of discriminating between the left paramere of M. pygmaeus and M. melanotoma using EFA, and to compare the results with those of M. costalis as a reference species.…”

Section: Introductionmentioning

confidence: 93%

Elliptic Fourier Analysis in the Study of the Male Genitalia to Discriminate Three <em>Macrolophus</em> Species (Hemiptera: Miridae)

Jauset

Edo-Tena

Casanova

et al. 2017

Preprint

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ABSTRACT：Within the genus Macrolophus (Heteroptera: Miridae), the species M. costalis (Fieber), M. melanotoma (Costa) and M. pygmaeus (Rambur) are present in the Mediterranean region on a wide variety of plant species. While M. costalis can easily be separated from the other two by the black tip at the scutellum, M. pygmaeus and M. melanotoma are cryptic species, extremely similar to one another in external traits, which have resulted in misidentifications. M. pygmaeus is an efficient biological control agent, both in greenhouse and field crops. The misidentification of these cryptic species could limit the effectiveness of biological control programs. Although morphology of the left paramere of the male genitalia has been used as a character for identification of these two cryptic species, there is controversy on the reliability of this character as a taxonomic tool for these species. Using geometric morphometric techniques, which are a powerful approach in detecting slight shape variations, the left parameres from these three Macrolophus species were compared. The paramere of M. costalis was larger and had a different shape than that of M. melanotoma and M. pygmaeus; however, no differences in size or shape were found between the left paramere of M. melanotoma and that of M. pygmaeus. Therefore, our results confirm that this character is too similar and it cannot be used to discriminate between these two cryptic species.

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Geographic variation in genital morphology of Ciulfina praying mantids

Cited by 28 publications

References 40 publications

Chirally dimorphic male genitalia in praying mantids (Ciulfina: Liturgusidae)

Chirally dimorphic male genitalia in praying mantids (Ciulfina: Liturgusidae)

Geographical variation in sperm morphology in the red-winged blackbird (Agelaius phoeniceus)

Elliptic Fourier Analysis in the Study of the Male Genitalia to Discriminate Three <em>Macrolophus</em> Species (Hemiptera: Miridae)

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