Academic literature on the topic 'Tetrix subulata'

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Journal articles on the topic "Tetrix subulata"

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Catling, Paul M., Donald F. McAlpine, Christopher I. G. Adam, et al. "New and noteworthy records of Orthoptera and allies in the Maritimes and the Îles-de-la-Madeleine, Quebec." Canadian Field-Naturalist 127, no. 4 (2014): 332. http://dx.doi.org/10.22621/cfn.v127i4.1514.

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Chortophaga viridifasciata, Forficula auricularia, Melanoplus stonei, Scudderia furcata furcata, Scudderia pistillata, and Trimerotropis verruculata from Prince Edward Island and Doru taeniatum, Melanoplus punctulatus, Orchelimum gladiator, and Spharagemon bolli from New Brunswick are new provincial records. Other records of interest include the endemic Melanoplus madeleineae from Île d’Entrée in the Îles-de-la-Madeleine, Quebec; Trimerotropis verruculata from the Îles-de-la-Madeleine, Quebec; and Chortophaga viridifasciata, Stethophyma lineatum, and Tetrix subulata, new for Cape Breton Island, Nova Scotia. The ranges of Conocephalus brevipennis, Tetrix arenosa angusta, Tetrix ornata, and Tetrix subulata are significantly extended in New Brunswick. A previously unpublished record from 2003 of Roeseliana roeselii (Metrioptera roeselii) is the earliest report of this European introduction to the Maritimes.
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Hochkirch, A., A. Bücker, and J. Gröning. "Reproductive Interference between the Common Ground-hopper Tetrix undulata and the Slender Ground-hopper Tetrix subulata (Orthoptera, Tetrigidae)." Bulletin of Entomological Research 98, no. 6 (2008): 605–12. http://dx.doi.org/10.1017/s0007485308005907.

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AbstractThe coexistence of closely related species is often hampered by resource competition or reproductive interference (interspecific sexual interactions). Species utilising similar signal channels might face substantial problems when they co-occur. It has, therefore, been suggested that reinforcement might drive signal evolution in narrow suture zones of secondary contact. However, species with large overlapping ranges are usually not believed to interact sexually. The Slender Ground-hopper, Tetrix subulata, and the Common Ground-hopper, Tetrix undulata (Orthoptera: Tetrigidae) are sister species, which occur sympatrically in large parts of western and Central Europe, but rarely share the same habitat. It has been hypothesized that reproductive interference might account for their missing coexistence. Here, we test experimentally whether these two species interact sexually. Our results suggest an incomplete premating isolation of these ground-hoppers, as we recorded heterospecific courtship, mating attempts and mating. The number of conspecific copulations and mating attempts of T. subulata decreased substantially in the presence of T. undulata, whereas the latter species was not negatively affected. Males of both species preferred to approach females of T. undulata, whereas females of both species did not discriminate against heterospecific males. Further studies on the reproductive success are needed to clarify whether reproductive interference might influence habitat partitioning between these species.
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Lock, Koen, Tim Verslycke, and Colin R. Janssen. "Energie Allocatie in Brachyptere versus Macroptere Vormen van het Zeggedoorntje Tetrix subulata (Orthoptera: Tetrigidae)." Entomologia Generalis 28, no. 4 (2006): 269–74. http://dx.doi.org/10.1127/entom.gen/28/2006/269.

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Kuřavová, Kateřina, Jan Šipoš, and Petr Kočárek. "Energy balance of food in a detrito-bryophagous groundhopper (Orthoptera: Tetrigidae)." PeerJ 8 (July 28, 2020): e9603. http://dx.doi.org/10.7717/peerj.9603.

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Detritus (decaying organic matter) and phyllodes of mosses are two main components in the diet of groundhoppers (Orthoptera: Tetrigidae). We studied the energy balance of consumed food under laboratory conditions in the detrito-bryophagous groundhopper, Tetrix subulata (Linnaeus, 1758). The results indicated that the energy food budget of this detrito-bryophagous groundhopper was comparable to those of small herbivorous grasshoppers (Acrididae: Gomphocerinae, Melanoplinae), which have a similar energy food budget of approximately 800–1,100 J/g. T. subulata consumed four times more detritus than mosses, although both components provided similar amounts of energy (ca. 15–16 kJ/g). However, in contrast with detritus, moss fragments passed through the digestive tract without a distinct change in their mass or a loss in their energy value. We assume that moss may cause the longer retention of semifluid mass of partly digested food in the alimentary tract; hence, the digestion and efficiency of nutrient absorption from detritus could be more effective.
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FORSMAN, ANDERS. "Reproductive life history variation among colour morphs of the pygmy grasshopper Tetrix subulata." Biological Journal of the Linnean Society 67, no. 2 (1999): 247–61. http://dx.doi.org/10.1111/j.1095-8312.1999.tb01863.x.

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KARPESTAM, Einat, and Anders FORSMAN. "Stable isotopes reveal dietary divergence between dispersal phenotypes in Tetrix subulata pygmy grasshoppers (Orthoptera: Tetrigidae)." European Journal of Entomology 110, no. 1 (2013): 65–70. http://dx.doi.org/10.14411/eje.2013.008.

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Forsman, Anders. "Clutch size versus clutch interval: life history strategies in the colour-polymorphic pygmy grasshopper Tetrix subulata." Oecologia 129, no. 3 (2001): 357–66. http://dx.doi.org/10.1007/s004420100743.

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Hochkirch, Axel, Julia Gröning, Tamara Loos, Corinna Metzing, and Maren Reichelt. "Specialized Diet and Feeding Habits as Key Factors for the Habitat Requirements of the Grasshopper Species Tetrix subulata (Orthoptera: Tetrigidae)." Entomologia Generalis 25, no. 1 (2000): 39–51. http://dx.doi.org/10.1127/entom.gen/25/2000/39.

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STEENMAN, Anja, Arne W. LEHMANN, and Gerlind U. C. LEHMANN. "Morphological variation and sex-biased frequency of wing dimorphism in the pygmy grasshopper Tetrix subulata (Orthoptera: Tetrigidae)." European Journal of Entomology 110, no. 3 (2013): 535–40. http://dx.doi.org/10.14411/eje.2013.071.

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Forsman, Anders, Lena Wennersten, Magnus Karlsson, and Sofia Caesar. "Variation in founder groups promotes establishment success in the wild." Proceedings of the Royal Society B: Biological Sciences 279, no. 1739 (2012): 2800–2806. http://dx.doi.org/10.1098/rspb.2012.0174.

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Environmental changes currently pose severe threats to biodiversity, and reintroductions and translocations are increasingly used to protect declining populations and species from extinction. Theory predicts that establishment success should be higher for more variable groups of dissimilar individuals. To test this ‘diversity promotes establishment’ hypothesis, we introduced colour polymorphic pygmy grasshoppers ( Tetrix subulata ) to different sites in the wild. The number of descendants found at the release sites the subsequent year increased with increasing number of colour morphs in the founder group, and variation in founder groups also positively affected colour morph diversity in the established populations. Since colour morphs differ in morphology, physiology, behaviour, reproductive life history and types of niche used, these findings demonstrate that variation among individuals in functionally important traits promotes establishment success under natural conditions, and further indicate that founder diversity may contribute to evolutionary rescue and increased population persistence.
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Dissertations / Theses on the topic "Tetrix subulata"

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Wennersten, Lena. "Population-level consequences of variation." Doctoral thesis, Linnéuniversitetet, Institutionen för naturvetenskap, NV, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-32522.

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Consequences of within population variation have recently attracted an increased interest in evolutionary ecology research. Theoretical models suggest important population-level consequences, but many of these predictions still remain to be tested. These issues are important for a deepened understanding of population performances and persistence, especially in a world characterized by rapid fragmentation of natural habitats and other environmental changes. I review theoretical models of consequences from intra population genetic and phenotypic variation. I find that more variable populations are predicted to be characterized by broader resource use, reduced intraspecific competition, reduced vulnerability to environmental changes, more stable population dynamics, higher invasive potential, enhanced colonization and establishment success, larger distribution ranges, higher evolvability, higher productivity, faster population growth rate, decreased extinction risk, and higher speciation rate, compared with less variable populations. To test some of these predictions I performed experiments and compared how different degree of colour polymorphism influences predation risk and establishment success in small groups. My comparisons of predation risk in mono- and polymorphic artificial prey populations showed that the risk of being eaten by birds does not only depend on the coloration of the individual prey item itself, but also on the coloration of the other members of the group. Two experiments on establishment success in small founder groups of Tetrix subulata pygmy grasshoppers with different degree of colour morph diversity show that establishment success increases with higher degree of diversity, both under controlled conditions in outdoor enclosures and in the wild. These findings may be important for re-stocking of declining populations or re-introductions of locally extinct populations in conservation biology projects. I report on remarkably rapid evolutionary shifts in colour morph frequencies in response to the changed environmental conditions in replicated natural populations of pygmy grasshoppers in fire ravaged areas. This finding 1 illustrates the high adaptive potential in a polymorphic species, and indicates the importance of preserved within-species diversity for evolutionary rescue. Finally, I review if theoretical predictions are supported by other published empirical tests and find strong support for the predictions that more variable groups benefit from reduced vulnerability to environmental changes, reduced population fluctuations and extinction risk, larger distribution ranges, and higher colonization or establishment success. In conclusion, my thesis illustrates how within-population variation influences ecological and evolutionary performances of populations both in the short and long term. As such, it emphasizes the need for conservation of biodiversity also within populations.
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