Analysis of body size and fecundity in a grasshopper

Akman, Olcay; Whitman, Douglas W.

doi:10.1665/1082-6467-17.2.249

Cited by 22 publications

(22 citation statements)

References 49 publications

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“…The influence of body size in a large number of life history characteristics of organisms including grasshoppers has been repeatedly stressed [2,[6][7][8]. Examples of this in grasshoppers are the relationship between body size and fecundity [7] or survival [9].…”

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confidence: 99%

“…Examples of this in grasshoppers are the relationship between body size and fecundity [7] or survival [9]. Thus, analyzing large-scale geographic variation of body size in different organisms is of importance in order to understand both the abiotic and biotic factors that may modify it through several mechanisms and the ecological and evolutionary consequences of this variation [2,[10][11][12].…”

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confidence: 99%

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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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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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“…Th e mean number of ovarioles and eggs per pod show a strong relationship between body size and number of ovarioles in grasshoppers in general (Whitman 2008;Ackman & Whitman 2008). For example, small grasshopper species with mature female body weights of 170-280 mg have 8-10 ovarioles (Richards & Waloff 1954;Joern & Gaines 1990).…”

Section: Discussionmentioning

confidence: 99%

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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“…It is a model study organism due to its large size (up to 7 cm long and 21 g), long life, calm demeanor, flightlessness, interesting biology, and ease of laboratory culture [51]. This species, and Orthoptera in general, exhibit considerable inter-and intrapopulational variation in body size in nature, and this variation has both genetic and environmental origins [37,41,43,46].…”

Section: The Insectmentioning

confidence: 99%

“…Size influences physiology, ecology, life history, behavior, performance, fitness, and evolution [36,37]. This current paper is part of a long-term study of body size in Orthoptera in our laboratories [36][37][38][39][40][41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Analysis Following Artificial Selection for Grasshopper Size

Cui

Ullah

et al. 2020

Insects

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We analyzed the transcriptomes of Romalea microptera grasshoppers after 8 years of artificial selection for either long or short thoraces. Evolution proceeded rapidly during the experiment, with a 13.3% increase and a 32.2% decrease in mean pronotum lengths (sexes combined) in the up- and down-selected colonies, respectively, after only 11 generations. At least 16 additional traits also diverged between the two colonies during the selection experiment. Transcriptomic analysis identified 693 differentially expressed genes, with 386 upregulated and 307 downregulated (55.7% vs. 44.3%), including cellular process, metabolic process, binding, general function prediction only, and signal transduction mechanisms. Many of the differentially expressed genes (DEGs) are known to influence animal body size.

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Analysis of body size and fecundity in a grasshopper

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 22 publications

References 49 publications

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

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

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

Transcriptomic Analysis Following Artificial Selection for Grasshopper Size

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