Mortality and Physiological Responses with Regard to the Surf Clam, Mactra quadrangularis, Exposed to Chlorine

2021 ◽  
Author(s):  
Seon-Sik Lee ◽  
Hyung-Jin Ahn ◽  
In-Uk Hwang ◽  
Eun Kim ◽  
Kyung-Nam Han
Keyword(s):  
Physiological Responses ◽  
Surf Clam

Physiological Responses of Sunray Surf Clam, Mactra chinensis in Low Salinities

2017 ◽  
Vol 33 (2) ◽  
pp. 63-71
Author(s):  
Jun Hyung Ryu ◽  
Byung Hwa Min ◽  
Ki Tae Kim
Keyword(s):  
Physiological Responses ◽  
Surf Clam ◽  
Mactra Chinensis

A comparison of the physiological responses, behaviour and biotransformation of paralytic shellfish poisoning toxins in a surf-clam (Paphies donacina) and the green-lipped mussel (Perna canaliculus)

2016 ◽  
Vol 67 (8) ◽  
pp. 1163 ◽  
Author(s):  
Islay D. Marsden ◽  
Andrea M. Contreras ◽  
Lincoln MacKenzie ◽  
Murray H.G. Munro
Keyword(s):  
Algal Blooms ◽  
Physiological Responses ◽  
Paralytic Shellfish Poisoning ◽  
Alexandrium Tamarense ◽  
Shellfish Poisoning ◽  
Surf Clam ◽  
Average Value ◽  
Perna Canaliculus ◽  
Paralytic Shellfish Toxins ◽  
Paralytic Shellfish

The accumulation of paralytic shellfish toxins (PSTs) in bivalves is species specific. We compared the physiological responses and the toxin profiles in tissues of the burrowing surf clam, Paphies donacina, and the green-lipped mussel, Perna canaliculus, exposed to the toxic dinoflagellate Alexandrium tamarense. Bivalves were supplied with the toxic algae for 10 days, then allowed a detoxification period of 8 days. Clearance rates of mussels and clams were similar when fed either with toxic A. tamarense or non-toxic A. margalefi. Byssus production in the mussel was inhibited and exhalent siphon activity in clams was erratic following exposure to A. tamarense. There were considerable differences in the toxic profile between the dinoflagellate A. tamarense, and tissues of the mussel and the surf clam, indicating that bioconversion of the PSTs had taken place. Toxin profiles of the tissues were both species and tissue specific. Following an 8-day detoxification period, total PSTs in mussels had fallen to safe concentrations below 50µg per 100g, whereas concentrations in clams remained high, with an average value greater than 600µg STX di-HCL equivalents per 100g. The results confirmed that mussels and clams are important monitoring organisms for toxic algal blooms and can be used to minimise the health risk of PSTs to humans.

Misophonia: An Evidence-Based Case Report

2020 ◽  
Vol 29 (4) ◽  
pp. 685-690
Author(s):  
C. S. Vanaja ◽  
Miriam Soni Abigail
Keyword(s):  
Quality Of Life ◽  
Case Report ◽  
Case History ◽  
Pure Tone ◽  
Physiological Responses ◽  
Evidence Based ◽  
Management Option ◽  
Pure Tone Audiogram

Purpose Misophonia is a sound tolerance disorder condition in certain sounds that trigger intense emotional or physiological responses. While some persons may experience misophonia, a few patients suffer from misophonia. However, there is a dearth of literature on audiological assessment and management of persons with misophonia. The purpose of this report is to discuss the assessment of misophonia and highlight the management option that helped a patient with misophonia. Method A case study of a 26-year-old woman with the complaint of decreased tolerance to specific sounds affecting quality of life is reported. Audiological assessment differentiated misophonia from hyperacusis. Management included retraining counseling as well as desensitization and habituation therapy based on the principles described by P. J. Jastreboff and Jastreboff (2014). A misophonia questionnaire was administered at regular intervals to monitor the effectiveness of therapy. Results A detailed case history and audiological evaluations including pure-tone audiogram and Johnson Hyperacusis Index revealed the presence of misophonia. The patient benefitted from intervention, and the scores of the misophonia questionnaire indicated a decrease in the severity of the problem. Conclusions It is important to differentially diagnose misophonia and hyperacusis in persons with sound tolerance disorders. Retraining counseling as well as desensitization and habituation therapy can help patients who suffer from misophonia.

Physiological Responses of Spider Phobics and Nonphobics to Viewing Slides

2002 ◽  
Author(s):  
Rebecca L. Stump ◽  
Judith C. Conger ◽  
Scott Vrana
Keyword(s):  
Physiological Responses

Make it stop! Physiological responses to infant crying

2014 ◽  
Author(s):  
Lynn H. White ◽  
Taryn Adams
Keyword(s):  
Physiological Responses ◽  
Infant Crying

Vasopressin and Telemetered Physiological Responses

1992 ◽  
Author(s):  
Helen M. Murphy ◽  
Cyrilla H. Wideman
Keyword(s):  
Physiological Responses

Children's Physiological Responses to Emotional Films: Social and Emotional Outcomes

2007 ◽  
Author(s):  
Arianne D. Stevens ◽  
Beverly J. Wilson ◽  
Alesha M. Muljat ◽  
Rachel A. Montague ◽  
Natalie P. Goodwin
Keyword(s):  
Physiological Responses ◽  
Social And Emotional ◽  
Emotional Outcomes

Psychophysiological Responses of Pilots in Hypoxia Training at 7000 and 7500 m

2020 ◽  
Vol 91 (10) ◽  
pp. 785-789
Author(s):  
Dongqing Wen ◽  
Lei Tu ◽  
Guiyou Wang ◽  
Zhao Gu ◽  
Weiru Shi ◽  
...  
Keyword(s):  
Heart Rate ◽  
Psychomotor Performance ◽  
Physiological Responses ◽  
Arterial Oxygen Saturation ◽  
Arterial Oxygen ◽  
Awareness Training ◽  
Similar Frequency ◽  
Psychophysiological Responses ◽  
The Mean ◽  
Training Protocol

INTRODUCTION: We compared the physiological responses, psychomotor performances, and hypoxia symptoms between 7000 m and 7500 m (23,000 and 24,600 ft) exposure to develop a safer hypoxia training protocol.METHODS: In altitude chamber, 66 male pilots were exposed to 7000 and 7500 m. Heart rate and arterial oxygen saturation were continuously monitored. Psychomotor performance was assessed using the computational task. The hypoxic symptoms were investigated by a questionnaire.RESULTS: The mean duration time of hypoxia was 323.0 56.5 s at 7000 m and 218.2 63.3 s at 7500 m. The 6-min hypoxia training was completed by 57.6% of the pilots and 6.1% of the pilots at 7000 m and at 7500 m, respectively. There were no significant differences in pilots heart rates and psychomotor performance between the two exposures. The Spo2 response at 7500 m was slightly severer than that at 7000 m. During the 7000 m exposure, pilots experienced almost the same symptoms and similar frequency order as those during the 7500 m exposure.CONCLUSIONS: There were concordant symptoms, psychomotor performance, and very similar physiological responses between 7000 m and 7500 m during hypoxia training. The results indicated that 7000-m hypoxia awareness training might be an alternative to 7500-m hypoxia training with lower DCS risk and longer experience time.Wen D, Tu L, Wang G, Gu Z, Shi W, Liu X. Psychophysiological responses of pilots in hypoxia training at 7000 and 7500 m. Aerosp Med Hum Perform. 2020; 91(10):785789.

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