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Showing 1 to 20 of 33 for “"Orthoptera"”.
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Morphological Variation and Community Science in Orthoptera
<p>Patterns of morphological divergence across species’ ranges provide insight into local adaptation and speciation. Here, we compare phenotypic divergence among 4,221 crickets from 337 populations of two related species of field cricket, Gryllus firmus and G. pennsylvanicus and their hybrids. We …
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Sperm utilization patterns in Gryllus integer (orthoptera: gryllidae
Sperm competition is the competition for fertilizations between ejaculates, within a female, following multiple mating. There are four sperm utilization or precedence patterns: first male precedence, where the first male to mate fertilizes most of the eggs laid by a female; last male precedence, …
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Revisão sistemática dos Pyrgomorphidae sul-americanos (Orthoptera, Acridoidea)
The Pyrgomorphidae of South América are represented by four species, Omura congrua Walker, 1870, Algete brunneri Bolívar, 1905. Deraspiella volxemi (Bolívar, 1884) and Minorissa pustulata Walker, 1870. ln this work, the systematic revision of the species is proposed based on the external …
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Preferences of several grasshopper species (Acrididae: Orthoptera) among certain cultivated grasses
Call number: LD2668 .T4 1968 C46
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Preferences of several grasshopper species (Acrididae: Orthoptera) among certain cultivated grasses
Call number: LD2668 .T4 1968 C46
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Revisão das espécies brasileiras do gênero Rhammatocerus Saussure, 1861 (Orthoptera, Acrididae, Gomphocerinae, Scyllinini)
At the present, some species of Rhammatocerus Saussure, 1861 are considered as the greatest pest in Brazilian crops and fourteen species has been recognised in this genus (CARBONELL, 1995). Herein, ten species are revised, two new synonymies are proposed and two new species are described: …
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Focused orientation of campaniform sensilla on Periplaneta americana L. (Orthoptera: Blattidae) trochanters and femurs
Orientation overlap of campaniform sensilla fields suggests that depolarizations originating from each field are integrated. Intra- and inter-field functional integration is suggested by the frequency of parallel and series campaniform sensilla orientations. Although several campaniform sensilla …
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A new genus and species of pygmy grasshopper (Orthoptera: Tetrigidae) from Eocene Baltic amber
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Psychopharmacological Characterization of a Drug-Induced Grooming Behavior in the Cricket, Acheta Domesticus (Insecta, Orthoptera)
Made available in DSpace on 2014-12-14T16:11:08Z (GMT). No. of bitstreams: 1 7606896.pdf: 3811421 bytes, checksum: fd770d3d4121671bfb0a7bcbb8715c25 (MD5) Previous issue date: 1975
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Systematics of Tridactyloidea (Orthoptera: Caelifera): Taxonomic revision of extinct taxa with comments on extant taxa
Tridactyloidea (Orthoptera: Caelifera) is a superfamily that includes three families of minute (0.5 mm) to medium-size (9 cm) crickets. Tridactylidae, pygmy mole crickets, are globally distributed, whereas mud crickets in Ripipterygidae and sandgropers in Cylindrachetidae have Neotropical and …
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Developmental and reproductive ecology of Melanoplus femurrubrum (De Geer) and some other melanopline grasshoppers (Orthoptera, Acrididae)
The red-legged grasshopper, Melanoplus femurrubrum femurrubrum (De Geer), was found to be developmentally polymorphic. Local field populations in Virginia had five, six, seven, and eight instars, determined by antennal segment counts. Adults with five instars were uncommon, and six and seven-instar …
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The effect of extracts (botanicals) from three selected plant species on the armoured ground cricket : Acanthoplus, Brancsk (Orthoptera : Tettigoniidae, hetrodinae)
Damage to sorghum and pearl millet by the armoured ground cricket, Acanthoplus speiseri Brancsk, is particularly high on small-scale farms. The control methods currently in use are based on the use of synthetic insecticides.The study was conducted to assess the effects of plant extracts from leaves …
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A Time-Course Analysis of Behavioral Plasticity and Differential Gene Expression Patterns in Response to Density in Schistocerca americana (Orthoptera: Acrididae)
<p>Phenotypic plasticity is the ability of the genotype to express alternative phenotypes in response to different environmental conditions and this is considered to be an adaptation in which a species can survive and persist in a rapidly changing environment. Some grasshoppers and locusts are …
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SPECIES RECOGNITION IS DRIVING EVOLUTION OF THE ACOUSTIC MATING SYSTEM OF SHIELD BACK KATYDIDS (ORTHOPTERA: TETTIGONIIDAE: AGLAOTHORAX): BEHAVIORAL AND PHYLOGENETIC EVIDENCE
Sexual selection and species recognition are two processes that may drive evolution of mating systems and contribute to speciation. Evidence from nature is rare. I asked whether song evolution in shield-back katydids (Aglaothorax) from southern California is consistent with either of these …
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Neurophysiological studies of the response characteristics of auditory fibres in the cricket (Gryllidae orthoptera) with particular reference to Teleogryllus oceanus, (le guillou)
Single unit recordings of primary and central auditory fibers of the cricket Teleogryllus oceanicus show responses to frequencies over the range 1kHz to at least 42kHz. The characteristic frequencies, (ChFs) of units were distributed over most of the bandwidth investigated although few units were …
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Effect of nestling sex ratio on the provisioning behavior of adult Eastern Bluebirds (Sialia sialis)
… items I was able to identify, grasshoppers (<em>Orthoptera</italic>) were the most common prey delivered to nestlings by both male and female bluebirds. Other common prey items included Lepidopteran larvae, beetles (<em>Coleoptera</italic>), crickets (<em>Orthoptera</italic>), worms …
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Seasonal abundance and diversity of insects on Sclerocarya birrea and Berchemia discolor in Tshikundamalema, Limpopo Province, South Africa
… Hemiptera, Hymenoptera, Diptera, Lepidoptera and Orthoptera. A total of 3259 insects belonging to the six Orders were collected. All specimens belonging to Coleoptera, Hemiptera and Hymenoptera (3216 in total) were identified to Family level, with a total of 97 morphospecies, belonging to 19 …
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The genetic basis of the trade-off between wing morph and fecundity in the sand cricket, Gryllus firmus (Orthoptera, Gryllidae) : correlated response in the proportion macropterous when selecting for a decrease in fecundity
… within several major orders of the Insecta (Orthoptera, Hemiptera, Homoptera, Coleoptera). A substantial amount of evidence indicates that a phenotypic trade-off exists between morph and fecundity in wing-dimorphic insects. However, to have evolutionary significance trade-offs must be …
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