Effects of microhabitat, time of day, and weather on predation of gypsy moth larvae

Oecologia ◽  
1988 ◽  
Vol 77 (2) ◽  
pp. 250-254 ◽  
Author(s):  
Ronald M. Weseloh
Keyword(s):  
1993 ◽  
Vol 125 (5) ◽  
pp. 887-894 ◽  
Author(s):  
Ronald M. Weseloh

AbstractAdult Calosoma sycophanta L. (Carabidae: Coleoptera) male and female pairs in a laboratory arena were observed for up to 30 days with a video recorder. Beetles were visible (i.e. not hiding) or in soil (i.e. female ovipositing) especially during night hours. Feeding on gypsy moth larvae occurred any time of the day or night. Male and female beetles were most active during the time when female beetles were ovipositing. Females spent more time eating and staying in soil than did males, but males tended to move around the arena more than did females. Based on results from this study, it is expected that, in the forest, C. sycophanta females will spend most of their time hidden in leaf litter or ovipositing. Males are more likely to be seen because they spend more time moving about, probably seeking mates.


2002 ◽  
Author(s):  
Jacquelyn J. Graven ◽  
Tracy A. Manners ◽  
James O. Davis

2006 ◽  
Author(s):  
Ann Louise Barrick ◽  
Philip D. Sloane ◽  
Madeline Mitchell ◽  
Christianna Williams ◽  
Wendy Wood

2018 ◽  
Vol 68 (08) ◽  
pp. e24-e25
Author(s):  
G Zerbini ◽  
V van der Vinne ◽  
L Otto ◽  
A Siersema ◽  
A Pieper ◽  
...  

2020 ◽  
Vol 635 ◽  
pp. 187-202
Author(s):  
T Brough ◽  
W Rayment ◽  
E Slooten ◽  
S Dawson

Many species of marine predators display defined hotspots in their distribution, although the reasons why this happens are not well understood in some species. Understanding whether hotspots are used for certain behaviours provides insights into the importance of these areas for the predators’ ecology and population viability. In this study, we investigated the spatiotemporal distribution of foraging behaviour in Hector’s dolphin Cephalorhynchus hectori, a small, endangered species from New Zealand. Passive acoustic monitoring of foraging ‘buzzes’ was carried out at 4 hotspots and 6 lower-use, ‘reference areas’, chosen randomly based on a previous density analysis of visual sightings. The distribution of buzzes was modelled among spatial locations and on 3 temporal scales (season, time of day, tidal state) with generalised additive mixed models using 82000 h of monitoring data. Foraging rates were significantly influenced by all 3 temporal effects, with substantial variation in the importance and nature of each effect among locations. The complexity of the temporal effects on foraging is likely due to the patchy nature of prey distributions and shows how foraging is highly variable at fine scales. Foraging rates were highest at the hotspots, suggesting that feeding opportunities shape fine-scale distribution in Hector’s dolphin. Foraging can be disrupted by anthropogenic influences. Thus, information from this study can be used to manage threats to this vital behaviour in the locations and at the times where it is most prevalent.


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