The metabolic costs of sexual signalling in the chirping katydid Plangia graminea (Serville) (Orthoptera: Tettigoniidae) are context dependent: cumulative costs add up fast
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the effect of learning strategies on the speaking ability of iranian students in the context of language institutes
the effect of learning strategies on the speaking ability of iranian students in the context of language institutes abstract language learning strategies are of the most important factors that help language learners to learn a foreign language and how they can deal with the four language skills specifically speaking skill effectively. acknowledging the great impact of learning strategies...
The spider-like katydid Arachnoscelis (Orthoptera: Tettigoniidae: Listroscelidinae): anatomical study of the genus.
This paper provides some observations on the anatomy of the neotropical katydid Arachnoscelis arachnoides Karny (Insecta: Orthoptera: Tettigoniidae). Arachnoscelis is a genus of predaceous katydids that comprise species that resemble spiders in their general body appearance. The type species, A. arachnoids, was described in 1891 from a single male collected in Colombia. Following the original d...
متن کاملThe Energetic Costs of Calling in the Bushcricket Requena Verticalis (orthoptera: Tettigoniidae: Listroscelidinae)
1. The metabolic costs of calling for male Requena verticalis Walker (Tettigoniidae: Listroscelidinae) were measured by direct recordings of oxygen consumption. The acoustic power output was measured by sound pressure levels around the calling bushcricket. 2. The average metabolic cost of calling was 0.143ml g21 h21 but depended on calling rate. The net metabolic cost of calling per unit call, ...
متن کاملThe Social Costs of Electricity: Do the Numbers Add Up?
Several recent studies have mounted major efforts to estimate the social cost of electricity generation. This paper provides an overview of this literature and a focused qualitative and quantitative comparison of the most comprehensive and rigorous of these studies. The paper also provides a synthesis that can help reduce the cost of future applications of these methods.
متن کاملA complex mechanism of call recognition in the katydid Neoconocephalus affinis (Orthoptera: Tettigoniidae).
Acoustic pattern recognition is important for bringing together males and females in many insect species. We used phonotaxis experiments on a walking compensator to study call recognition in the katydid Neoconocephalus affinis, a species with a double-pulsed call and an atypically slow pulse rate for the genus. Call recognition in this species is unusual because females require the presence of ...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2017
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.160036