Sexual size dimorphism in Orthoptera (<i>sens. str</i>.) — a review

Hochkirch, Axel; Gröning, Julia

doi:10.1665/1082-6467-17.2.189

Cited by 71 publications

(59 citation statements)

References 71 publications

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“…As a proximate cause for SSD in millipedes the evidence corroborated the sexual bimaturism hypothesis [11] . As an ultimate cause for SSD this together with ecological evidence corroborated the intersexual competition hypothesis [14][15][16] . The small-male mating advantage may apply [17] .…”

Section: Discussionsupporting

confidence: 71%

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Relative sexual size dimorphism in Centrobolus fulgidus (Lawrence) compared to 18 congenerics

Cooper¹

2017

J. Entomol. Zool. Stud.

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The present research was aimed to study relative sexual size dimorphism of Centrobolus fulgidus (Lawrence) compared to 18 congenerics. Millipedes illustrate reversed sexual size dimorphism (SSD) as females are larger than males; and corroborate Rensch's rule as this dimorphism increases with body size. SSD was calculated in 18 species of the genus Centrobolus and illustrated as a regression. The approximate relative position of C. fulgidus was shown from measurements taken at Richards Bay Minerals (February 1996) and St. Lucia Estuary (December 1996) in South Africa. The size of C. fulgidus was 56.2 X 5.4 mm: 63.5 X 5.2 mm (males: females; n=11) and logged (x = 3.398; y = 3.301). The mean volume ratio for C. fulgidus was 1.2505. The evidence suggests the proximate cause for SSD in C. ruber is sexual bimaturism while the ultimate cause in Centrobolus is intersexual competition.

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Section: Discussionsupporting

confidence: 71%

“…Sexual size dimorphism is prevalent in arthropods and females are usually larger than males e. g. beetles [1] ; sea spiders [2] ; orthopterans [15] . Behavioural patterns such as provisioning versus non-provisioning relate to SSD [3] .…”

Section: Introductionmentioning

confidence: 99%

Relative sexual size dimorphism in Centrobolus fulgidus (Lawrence) compared to 18 congenerics

Cooper¹

2017

J. Entomol. Zool. Stud.

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“…Such a sexual size dimorphism (SSD) has been linked to diff erences in the number of instars between the sexes -with larger females usually having one more instar than males (Hochkirch & Gröning 2008) or facultatively inserting an additional development stage to increase body size (Esperk et al 2007). Diff erences in development time have been found to cause SSD in other arthropods (Wiklund & Forsberg 1991;Wedell 1992;Maklakov et al 2004;Berner & Blanckenhorn 2006) but we did not fi nd any signifi cant variations in development time between male and female A. b. vicheti.…”

Section: Discussioncontrasting

confidence: 54%

Development, reproductive capacity and diet of the Mediterranean grasshopperArcyptera brevipennis vichetiHarz 1975 (Orthoptera: Caelifera: Acrididae: Gomphocerinae)

Schultner

Blanchet

Pagès

et al. 2012

Annales de la Société entomologique de France (N.S.)

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Abstract. Arcyptera brevipennis vichetiHarz 1975 (Orthoptera: Acrididae) is a rare grasshopper native to Mediterranean grassland habitats in the Languedoc-Roussillon region of southern France. Changes in land-use have modifi ed these unique habitats, thus threatening the survival of A. b. vicheti populations. To improve the conservation of this species this study aimed to describe important aspects of its biology and ecology. Development of nymphs passed through fi ve instars after hatching and was closely associated with the Mediterranean spring season. A prominent sexual size dimorphism is highlighted, but the larger females developed in the same number of instars as males. Hind femur length and number of antenna segments were useful characters when distinguishing between nymphal instars. All individuals were brachypterous, indicating that A. b. vicheti is unable to fl y. Adult females laid 15 eggs on average and deposited no more than two egg pods in their lifetime. Grass debris made up 93% of faecal content of both sexes. Our results provide valuable information for the conservation of this highly endangered grasshopper species.Résumé. Développement, capacité de reproduction et régime alimentaire du criquet méditerranéen. Arcyptera brevipennis vicheti Harz 1975 (Orthoptera : Caelifera : Acrididae : Gomphocerinae). Arcyptera brevipennis vicheti Harz 1975 (Orthoptera : Acrididae) est un criquet indigène rare des pelouses du Languedonc-Roussillon dans le sud de la France. Les changements dans l'aménagement du territoire ont modifi é ces habitats uniques, menaçant ainsi la survie des populations d' A. b. vicheti. Afi n d'améliorer la conservation de cette espèce, cette étude s'est donnée pour mission de décrire les grands aspects de sa biologie et de son écologie. Le développement des larves passe par 5 stades après l'éclosion et est étroitement associée avec le printemps méditerranéen. Un fort dimorphisme sexuel est mis en évidence mais les femelles de grande taille se développent avec le même nombre de stades larvaires que les mâles. La longueur du fémur postérieur et le nombre de segments des antennes sont des caractères utiles pour distinguer les stades larvaires. Tous les individus sont brachyptères, ce qui indique qu'A. b. vicheti est incapable de vol. Les femelles adultes pondent une moyenne de 15 oeufs et ne déposent pas plus de 2 oothèques durant leur vie. Les débris herbeux constituent jusqu'à 93% des contenus fécaux des deux sexes. Nos résultats fournissent des informations précieuses pour la conservation de cette espèce fortement menacée.

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“…This is most relevant because in a vast majority of insects and particularly in grasshoppers females are usually larger than males. In grasshoppers, there are many cases of extreme female-biased SSD in families such as Proscopiidae, Ommexechidae, and Romaleidae but information regarding Rensch's rule is extremely scarce [56]. Furthermore, since patterns of SSD are probably heavily influenced by Bergmannian or converse-Bergmannian body size patterns, which in turn depend on clinal variation of abiotic factors [57], a clarification of Rensch's rule in grasshoppers is needed.…”

Section: Rensch's Rule Is Affected By Bergmann's Rule or Itsmentioning

confidence: 99%

“…Due to male-male competition for access to females, SSD could favor an increase in male body size. On the other hand, larger size in females could be favored by natural selection since fecundity is directly correlated with body size [56,58].…”

Section: Rensch's Rule Is Affected By Bergmann's Rule or Itsmentioning

confidence: 99%

Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae)

Bidau

Castillo

Martí

2012

Psyche: A Journal of Entomology

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We review the effects of abiotic factors on body size in two grasshopper species with large geographical distributions: Dichroplus pratensis and D. vittatus, inhabiting Argentina in diverse natural habitats. Geographical spans for both species provide an opportunity to study the effects of changes in abiotic factors on body size. The analyses of body size distribution in both species revealed a converse Bergmannian pattern: body size is positively correlated with latitude, altitude, and seasonality that influences time available for development and growth. Allen's rule is also inverted. Morphological variability increases towards the ends of the Bergmannian clines and, in D. pratensis, is related with a central-marginal distribution of chromosomal variants that influence recombination. The converse Bergmannian patterns influence sexual size dimorphism in both species but in different fashions. Body size variation at a microspatial scale in D. pratensis is extremely sensitive to microclimatic clines. We finally compare our results with those for other Orthopteran species.

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Sexual size dimorphism in Orthoptera (sens. str.) — a review

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 71 publications

References 71 publications

Relative sexual size dimorphism in Centrobolus fulgidus (Lawrence) compared to 18 congenerics

Relative sexual size dimorphism in Centrobolus fulgidus (Lawrence) compared to 18 congenerics

Development, reproductive capacity and diet of the Mediterranean grasshopperArcyptera brevipennis vichetiHarz 1975 (Orthoptera: Caelifera: Acrididae: Gomphocerinae)

Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae)

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