Stability, Prey Density and Age/Dependent Interference in an Aquatic Insect Predator, Notonecta hoffmanni

10.2307/4079 ◽  
1981 ◽  
Vol 50 (2) ◽  
pp. 625 ◽  
Author(s):  
Andrew Sih
Keyword(s):  
Prey Density ◽  
Aquatic Insect ◽  
Age Dependent ◽  
Insect Predator

Aquatic Insect Predator-Prey Relations

BioScience ◽  
1982 ◽  
Vol 32 (4) ◽  
pp. 261-266 ◽  
Author(s):  
Barbara L. Peckarsky
Keyword(s):  
Aquatic Insect ◽  
Predator Prey ◽  
Insect Predator

Recent changes in reproductive phenology of a K-selected aquatic insect predator, Belostoma flumineum Say (Heteroptera, Belostomatidae)

2018 ◽  
Vol 109 (1) ◽  
pp. 84-89
Author(s):  
S.L. Kight ◽  
G.L. Coffey ◽  
A.W. Tanner ◽  
M.P. Dmytriw ◽  
S.L. Tedesco ◽  
...  
Keyword(s):  
Aquatic Insect ◽  
Thermal Conditions ◽  
Reproductive Behaviour ◽  
Reproductive Phenology ◽  
Sampling Effort ◽  
Study Region ◽  
Insect Predator ◽  
Negative Impacts ◽  
New Generation ◽  
Migration And Development

AbstractThe timing of critical events like mating, migration, and development has noticeably and recently shifted in many populations of diverse organisms. Here, we report a change in the breeding phenology of giant waterbugs, Belostoma flumineum Say (Heteroptera, Belostomatidae), in the northeastern United States. Waterbugs collected in 2005 and 2006 exhibited previously typical patterns of mating and reproduction: two annual reproductive peaks in which overwintered adults mated in the spring and young adults from a new generation mated in the fall. In 2012 and 2015, despite similar sampling effort, we detected no fall breeding activity in the study area. Reproductive behaviour under controlled laboratory conditions was also different between the earlier (2005 and 2006) and recent (2012 and 2015) years: waterbugs collected in recent years exhibited significant delays in reproduction (>30 days) under similar photoperiod and thermal conditions. We discuss potential causes of this dramatic change in reproductive behaviour, such as climate change, as well as possible negative impacts of the absence of fall reproduction on populations of B. flumineum in the study region.

Effects of Hyperoxia on Lung Utrastructure

1970 ◽  
Vol 28 ◽  
pp. 26-27
Author(s):  
Gladys Harrison
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Light Microscopy ◽  
Oxygen Effects ◽  
Age Dependent ◽  
The Central Nervous System ◽  
The Subject ◽  
Space Age ◽  
Alveolar Septa ◽  
Extensive Damage

With the advent of the space age and the need to determine the requirements for a space cabin atmosphere, oxygen effects came into increased importance, even though these effects have been the subject of continuous research for many years. In fact, Priestly initiated oxygen research when in 1775 he published his results of isolating oxygen and described the effects of breathing it on himself and two mice, the only creatures to have had the “privilege” of breathing this “pure air”.Early studies had demonstrated the central nervous system effects at pressures above one atmosphere. Light microscopy revealed extensive damage to the lungs at one atmosphere. These changes which included perivascular and peribronchial edema, focal hemorrhage, rupture of the alveolar septa, and widespread edema, resulted in death of the animal in less than one week. The severity of the symptoms differed between species and was age dependent, with young animals being more resistant.

1248: Impact of Surgical Treatment of Renal Carcinoma on Renal Function and Blood Pressure: A Race- and Age-Dependent Association

2007 ◽  
Vol 177 (4S) ◽  
pp. 411-412
Author(s):  
Javier Miller ◽  
Angela Smith ◽  
Kris Gunn ◽  
Erik Kouba ◽  
Eric M. Wallen ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Renal Function ◽  
Surgical Treatment ◽  
Renal Carcinoma ◽  
Age Dependent

Age-dependent differences in postoperative HLA-DR expression in cardiac surgery patients

2011 ◽  
Vol 59 (S 01) ◽  
Author(s):  
K Lazouski ◽  
A Zittermann ◽  
M Schmidt ◽  
J Gummert ◽  
J Börgermann
Keyword(s):  
Cardiac Surgery ◽  
Hla Dr ◽  
Age Dependent
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