Hydrologic and behavioral constraints on oviposition of stream insects: implications for adult dispersal

Oecologia ◽  
2000 ◽  
Vol 125 (2) ◽  
pp. 186-200 ◽  
Author(s):  
Barbara L. Peckarsky ◽  
Brad W. Taylor ◽  
Christopher C. Caudill
Keyword(s):  
Stream Insects ◽  
Behavioral Constraints ◽  
Adult Dispersal

Habitat filtering and adult dispersal determine the taxonomic composition of stream insects in an urbanizing landscape

2015 ◽  
Vol 60 (9) ◽  
pp. 1740-1754 ◽  
Author(s):  
Robert F. Smith ◽  
P. Dilip Venugopal ◽  
Matthew E. Baker ◽  
William O. Lamp
Keyword(s):  
Taxonomic Composition ◽  
Habitat Filtering ◽  
Stream Insects ◽  
Adult Dispersal

scholarly journals Riparian forestry management and adult stream insects

2004 ◽  
Vol 8 (3) ◽  
pp. 545-549 ◽  
Author(s):  
R. A. Briers ◽  
J. H. R. Gee
Keyword(s):  
Riparian Vegetation ◽  
Management Practices ◽  
Food Sources ◽  
Tree Cover ◽  
Strong Impact ◽  
Riparian Management ◽  
Stream Insects ◽  
Larval Stages ◽  
Forestry Management ◽  
Coniferous Plantation

Abstract. The impacts of coniferous plantation forestry on the biology of upland streams in the UK are firmly established. Whilst benthic communities have been well studied, very little research has considered the impacts of riparian forestry management on adult stream insects, yet the essentially terrestrial adult (reproductive) phase may be important in determining the abundance and distribution of larval stages. Riparian vegetation has a potentially strong impact on survival and success of adult stages through alteration of microclimate, habitat structure and potential food sources, in addition to effects carried over from larval stages. Here, current riparian management strategies are analysed in the light of available information on the ecology of adult stream insects. On the whole, management practices appear to favour adult stream insects, although an increase in tree cover in riparian areas could be beneficial, by providing more favourable microclimatic conditions for adults. This conclusion is drawn based on rather limited information, and the need for further research into the effects of riparian forestry management on adult stream insects is highlighted. Keywords: microclimate, plantation, life history, riparian vegetation

Community-level responses by stream insects to neem products containing azadirachtin

2000 ◽  
Vol 19 (4) ◽  
pp. 855-861 ◽  
Author(s):  
David P. Kreutzweiser ◽  
Scott S. Capell ◽  
Taylor A. Scarr
Keyword(s):  
Community Level ◽  
Stream Insects ◽  
Neem Products

scholarly journals Spawning salmon and the phenology of emergence in stream insects

2010 ◽  
Vol 277 (1688) ◽  
pp. 1695-1703 ◽  
Author(s):  
Jonathan W. Moore ◽  
Daniel E. Schindler
Keyword(s):  
Stream Insects

Interstitial Nucleus of Cajal Encodes Three-Dimensional Head Orientations in Fick-Like Coordinates

2007 ◽  
Vol 97 (1) ◽  
pp. 604-617 ◽  
Author(s):  
Eliana M. Klier ◽  
Hongying Wang ◽  
J. Douglas Crawford
Keyword(s):  
Coordinate System ◽  
Degrees Of Freedom ◽  
Three Dimensional ◽  
Semicircular Canals ◽  
Head Rotation ◽  
Head Orientation ◽  
Interstitial Nucleus Of Cajal ◽  
The Gaze ◽  
Behavioral Constraints ◽  
The Right

Two central, related questions in motor control are 1) how the brain represents movement directions of various effectors like the eyes and head and 2) how it constrains their redundant degrees of freedom. The interstitial nucleus of Cajal (INC) integrates velocity commands from the gaze control system into position signals for three-dimensional eye and head posture. It has been shown that the right INC encodes clockwise (CW)-up and CW-down eye and head components, whereas the left INC encodes counterclockwise (CCW)-up and CCW-down components, similar to the sensitivity directions of the vertical semicircular canals. For the eyes, these canal-like coordinates align with Listing’s plane (a behavioral strategy limiting torsion about the gaze axis). By analogy, we predicted that the INC also encodes head orientation in canal-like coordinates, but instead, aligned with the coordinate axes for the Fick strategy (which constrains head torsion). Unilateral stimulation (50 μA, 300 Hz, 200 ms) evoked CW head rotations from the right INC and CCW rotations from the left INC, with variable vertical components. The observed axes of head rotation were consistent with a canal-like coordinate system. Moreover, as predicted, these axes remained fixed in the head, rotating with initial head orientation like the horizontal and torsional axes of a Fick coordinate system. This suggests that the head is ordinarily constrained to zero torsion in Fick coordinates by equally activating CW/CCW populations of neurons in the right/left INC. These data support a simple mechanism for controlling head orientation through the alignment of brain stem neural coordinates with natural behavioral constraints.

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