Palaearctic Grasshoppers
نویسندگان
چکیده
منابع مشابه
Ferocious Fighting between Male Grasshoppers
Contests among individuals over mating opportunities are common across diverse taxa, yet physical conflict is relatively rare. Due to the potentially fatal consequences of physical fighting, most animals employ mechanisms of conflict resolution involving signalling and ritualistic assessment. Here we provide the first evidence of ubiquitous escalated fighting in grasshoppers. The chameleon gras...
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The hypothesis of a Palaearctic origin of Leishmania in the early Cenozoic, dispersal to the Nearctic in the late Eocene and to the Neotropical in the Pliocene is presented. It is further hypothesized that murid rodents and their immediate ancestors have been important mammalian reservoirs since the origination of Leishmania. Biochemical, molecular, biogeographical, entomological, mammalalogica...
متن کاملGut physicochemistry of grassland grasshoppers.
We examined the pH and Eh of the digestive tract of 23 species of mixed-grass prairie grasshoppers, and asked whether these traits were associated with the species breadth and forb composition of their diets. We report that the gut lumen of all grasshoppers was oxidizing and ranged from slightly acid to neutral depending on the gut region and species. Although gut physicochemical conditions dif...
متن کاملApproximate Bayesian Computation Phylogeography of montane grasshoppers
Lacey Knowles studied grasshoppers in the genus Melanopus. She collected 1275bp of DNA sequence data from cytochrome oxidase I (COI) from 124 individuals of M. oregonensis and two outgroup speices. The specimens were collected from 15 “sky-island” sites in the northern Rocky Mountains (see Figure 1; [5]). Two alternative hypotheses had been proposed to describe the evolutionary relationships am...
متن کاملAerial Manoeuvring Reflexes in Flightless Grasshoppers
Aerial locomotion of many insects involves jumping or dropping from elevated positions. Flight and aerobatic manoeuvring often follow locust jumps, while jumps from elevated positions can carry flightless grasshoppers several metres through the air. Leg postures and orientation movements associated with aerial locomotion have been studied in the flightless grasshopper, Barytettixpsolus (Cohn & ...
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ژورنال
عنوان ژورنال: Nature
سال: 1965
ISSN: 0028-0836,1476-4687
DOI: 10.1038/207673b0