Thermal ecology and the relationship between temperature and sprint speed in adult females Paruroctonus marksi (Scorpiones: Vaejovidae)

2022 ◽  
Vol 197 ◽  
pp. 104675
Author(s):  
Zia Nisani ◽  
Victoria Cardenas ◽  
Jasmine Cox
2017 ◽  
Vol 22 (9) ◽  
pp. 1431
Author(s):  
Elizeu B. Castro ◽  
Ronald Ochoa ◽  
Reinaldo J.F. Feres

A new species, Terminalichus simplex sp. nov., is described based on adult females, deutonymphs and protonymphs, collected on Terminalia catappa L. (Combretaceae) from Thailand. The relationship of Terminalichus with other brevipalpine genera is discussed and a key to species of Terminalichus, Tenuilichus, Amblypalpus, Colopalpus and Priscapalpus is provided.  


Author(s):  
Andrew Clarke

Temperature affects everything. It influences all aspects of the physical environment and governs any process that involves a flow of energy, setting boundaries on what an organism can or cannot do. This novel textbook explores the key principles behind the complex relationship between organisms and temperature, namely the science of thermal ecology. It starts providing a rigorous framework for understanding the nature of temperature and the flow of energy in and out of the organism, before describing the influence of temperature on what organisms can do, and how fast they can do it. Central to this is the relationship between temperature and metabolism, which then forms the basis for an exploration of the effects of temperature on growth and size. Two chapters cover first endothermy (including how this expensive lifestyle might have evolved), and then when and how this is suspended in torpor and hibernation. With these fundamental principles covered, the book’s final section explores thermal ecology itself, incorporating the important extra dimension of interactions with other organisms. After an examination of the relationship between temperature, energy and diversity, an entire chapter is devoted to the crucially important subject of the nature of climate change and how organisms are responding to this. Throughout the book, emphasis is placed on the need for an understanding of the underlying physical mechanisms, and the important insights that can be gained from the historical and fossil record.


Zootaxa ◽  
2012 ◽  
Vol 3384 (1) ◽  
pp. 60
Author(s):  
BOZENA ŁAGOWSKA ◽  
CHRIS HODGSON

The adult females of two new species of Diaspididae (Hemiptera: Coccoidea) are described and placed in Anzaspis Henderson(previously only known from New Zealand): A. neocordylinidis Łagowska & Hodgson and A. pandani Łagowska & Hodgson.The former is close to A. cordylinidis (Maskell), currently only known from New Zealand and found on the same host plantspecies, and the latter is very close to Chionaspis pandanicola Williams & Watson, only currently known from Fiji, and alsocollected on the same host plant species. Two previously described Chionaspis species already known from Fiji, i.e. C.freycinetiae Williams & Watson and C. pandanicola Williams & Watson are transferred to Anzaspis as Anzaspis freycinetiae(Williams & Watson) comb. nov. and A. pandanicola (Williams & Watson) comb. nov., and a third species, C. rhaphidophoraeWilliams & Watson, is transferred to Serenaspis as Serenaspis rhaphidophorae (Williams & Watson) comb. nov.. The reasonsfor these nomenclatural decisions and the relationship between the scale insect fauna of Fiji and New Zealand are discussed. A key is provided to all related species in the tropical South Pacific and New Zealand.


2019 ◽  
Vol 14 (8) ◽  
pp. 1147-1150 ◽  
Author(s):  
Gareth N. Sandford ◽  
Simon A. Rogers ◽  
Avish P. Sharma ◽  
Andrew E. Kilding ◽  
Angus Ross ◽  
...  

Purpose: Anaerobic speed reserve (ASR), defined as the speed range from velocity associated with maximal oxygen uptake (vVO2max) to maximal sprint speed, has recently been shown to be an important tool for middle-distance coaches to meet event surge demands and inform on the complexity of athlete profiles. To enable field application of ASR, the relationship between gun-to-tape 1500-m average speed (1500v) and the vVO2max for the determination of lower landmark of the ASR was assessed in elite middle-distance runners. Methods: A total of 8 national and 4 international middle-distance runners completed a laboratory-measured vVO2max assessment within 6 wk of a nonchampionship 1500-m gun-to-tape race. ASR was calculated using both laboratory-derived vVO2max (ASR-LAB) and 1500v (ASR-1500v), with maximal sprint speed measured using radar technology. Results: 1500v was on average +2.06 ± 1.03 km/h faster than vVO2max (moderate effect, very likely). ASR-LAB and ASR-1500v mean differences were −2.1 ± 1.5 km/h (large effect, very likely). 1500v showed an extremely large relationship with vVO2max, r = .90 ± .12 (most likely). Using this relationship, a linear-regression vVO2max-estimation equation was derived as vVO2max (km/h) = (1500v [km/h] − 14.921)/0.4266. Conclusions: A moderate difference was evident between 1500v and vVO2max in elite middle-distance runners. The present regression equation should be applied for an accurate field prediction of vVO2max from 1500-m gun-to-tape races. These findings have strong practical implications for coaches lacking access to a sports physiology laboratory who seek to monitor and profile middle-distance runners.


1983 ◽  
Vol 77 (6) ◽  
pp. 269-295
Author(s):  
Donald D. Kirtley ◽  
Kenneth T. Sabo

Compared a group of visually handicapped adult females and normally sighted college females for nature of aggressive content in nocturnal dreams. The visually handicapped group was comprised of individuals who were partially sighted, congenitally blind and adventitiously blind. Each subject was required to keep a dream diary for a period of two to four months. Diaries were subsequently content-analyzed by means of the aggression scale of the Hall-Van de Castle content-analysis system. Visually handicapped adults, as a group, exhibited far more verbal and covert aggression. Generally, however, findings were in agreement with Hall's continuity hypothesis regarding the relationship between dream content and waking life.


2019 ◽  
Vol 12 (2) ◽  
pp. 9-9 ◽  
Author(s):  
Aya Miyamoto ◽  
Hirofumi Maehana ◽  
Toshio Yanagiya

2008 ◽  
Vol 29 (2) ◽  
pp. 197-206 ◽  
Author(s):  
Raoul Van Damme ◽  
Dave Verwaijen

Abstract Foraging strategy is often considered to play a central role in moulding diverse aspects of an animal's general biology. Active foragers should have greater locomotor endurance, allowing high movement activity rates, while sit-and-waiting foragers may be better adapted to sprinting, allowing catching prey by a quick attack from an ambush site, and going with specific predator escape tactics. In this study we investigate these predicted patterns in a set of lacertid lizard species. There is considerable variation in foraging activity within Lacertidae, which allows the close investigation of the co-evolution of the traits considered. We found a tendency of positive correlation of foraging measures (PTM, percentage of time moving; MPM, number of movements per minute) with laboratory measured endurance capacity. However, the relationship of foraging measures with maximal sprint speed remains less clear. MPM correlates negatively with maximal sprint speed, but PTM does not. When sprint speed was corrected for body size, no correlations were found at all.


1961 ◽  
Vol 41 (2) ◽  
pp. 212-219 ◽  
Author(s):  
G. L. Frederick ◽  
G. J. Brisson

Six female swine were maintained during one or more gestations on a vitamin B12-deficient diet. Two that had been fed the deficient diet for more than 2 years prior to their first gestation aborted. Four that received the deficient diet for 7 months prior to their first gestation farrowed a total of 8 litters containing 68 live piglets; 27 died within 3 days. All piglets fed a synthetic milk diet, deficient in vitamin B12, died within 14 days.Five adult females fed the deficient diet supplemented with 400 μg. of vitamin B12 per animal per day farrowed a total of 8 litters containing 83 live piglets; none died within 3 days. Of 14 piglets fed a vitamin B12-deficient synthetic milk diet, 2 died within 14 days.The different dietary vitamin B12 intakes of the adults influenced the serum vitamin B12 levels of the adults and of their offspring.Piglets fed vitamin B12 gained more, but feed conversion was not influenced by the vitamin B12 dietary intake of the piglets or by the intake of their dams during gestation.It is concluded that vitamin B12 influences swine reproduction and neonatal survival.


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