scholarly journals Behavioural and morphological changes in fish exposed to ecologically relevant boat noises

2019 ◽  
Vol 76 (10) ◽  
pp. 1845-1853
Author(s):  
Megan F. Mickle ◽  
Christopher M. Harris ◽  
Oliver P. Love ◽  
Dennis M. Higgs
Keyword(s):  
Sublethal Effects ◽  
Physiological Stress ◽  
Morphological Changes ◽  
Stress Hormones ◽  
Anthropogenic Noise ◽  
Black Bullhead ◽  
Behavioural Effects ◽  
Boat Traffic ◽  
As Stress ◽  
Ameiurus Melas

There is increasing concern about the effect of underwater noise on fish due to rising levels of anthropogenic noise. We performed experiments on the black bullhead (Ameiurus melas), a species with known hearing specializations and located within the Laurentian Great Lakes where there is considerable commercial and recreational boat traffic. We tested and compared physiology (baseline cortisol), behaviour (activity, sheltering), and morphology (ciliary bundles of hair cells) of bullhead to boat noise. At 140 dB re 1 μPa (−54.84 dB re 1 m·s−2), we saw clear behavioural effects in terms of both activity and sheltering levels despite no obvious morphological or physiological stress. Following both short- and long-period acute exposure to higher — but environmentally relevant — noise levels, bullhead were less active and sheltered more and also exhibited a decrease in ciliary bundles. These results suggest that there are sublethal effects of anthropogenic noise on fish behaviour and ciliary bundles, which may have direct implications on population health. Moreover, commonly used metrics such as stress hormones may not always offer the most relevant biomarker of the response to anthropogenic boat noise.

When did the black bullhead, Ameiurus melas (Teleostei: Ictaluridae), arrive in Poland?

2010 ◽  
Vol 18 (3) ◽  
Author(s):  
Michał Nowak ◽  
Ján Koščo ◽  
Paweł Szczerbik ◽  
Dominika Mierzwa ◽  
Włodzimierz Popek
Keyword(s):  
Black Bullhead ◽  
Ameiurus Melas

scholarly journals Non-breeding feather concentrations of testosterone, corticosterone and cortisol are associated with subsequent survival in wild house sparrows

2011 ◽  
Vol 279 (1733) ◽  
pp. 1560-1566 ◽  
Author(s):  
Lee Koren ◽  
Shinichi Nakagawa ◽  
Terry Burke ◽  
Kiran K. Soma ◽  
Katherine E. Wynne-Edwards ◽  
...  
Keyword(s):  
Stress Hormones ◽  
Passer Domesticus ◽  
House Sparrows ◽  
Long Term Study ◽  
Darwinian Fitness ◽  
Liquid Chromatography Tandem Mass ◽  
In The Wild ◽  
The Subject ◽  
As Stress

Potential mechanistic mediators of Darwinian fitness, such as stress hormones or sex hormones, have been the focus of many studies. An inverse relationship between fitness and stress or sex hormone concentrations has been widely assumed, although empirical evidence is scarce. Feathers gradually accumulate hormones during their growth and provide a novel way to measure hormone concentrations integrated over time. Using liquid chromatography–tandem mass spectrometry, we measured testosterone, corticosterone and cortisol in the feathers of house sparrows ( Passer domesticus ) in a wild population which is the subject of a long-term study. Although corticosterone is considered the dominant avian glucocorticoid, we unambiguously identified cortisol in feathers. In addition, we found that feathers grown during the post-nuptial moult in autumn contained testosterone, corticosterone and cortisol levels that were significantly higher in birds that subsequently died over the following winter than in birds that survived. Thus, feather steroids are candidate prospective biomarkers to predict the future survival of individuals in the wild.

scholarly journals The first record of black bullhead Ameiurus melas (Pisces, Ictaluridae) in Serbian waters

2005 ◽  
Vol 57 (4) ◽  
pp. 307-308 ◽  
Author(s):  
G. Cvijanovic ◽  
Mirjana Lenhardt ◽  
Aleksandar Hegedis
Keyword(s):  
Standard Length ◽  
First Record ◽  
Side Channel ◽  
Gill Nets ◽  
Black Bullhead ◽  
Ameiurus Melas

On the 14th of June, 2005, in the Danube side channel "Jojkic" (N 44?50'33.1??, E 20?27'46.1??) near Belgrade, we recorded the presence of A. melas, ranging in weight (W) from 11.2 g to 135.6 g, and standard length (Ls) from 70 mm to 173 mm. Specimens were obtained from professional fishermen, who caught them with gill nets, as well from sport fishermen using fishing roads. Also, on 28th of May, 2005, on the lake "Savsko jezero" (N 44?47'20.1??, E 20?24'54.6??), we collected two specimens with gill nets. They were held in an aquarium until the 20th of June, when they were analyzed. Their weight (W) was 48.8 g and 97.5 g, their standard length (Ls) 145 mm and 183 mm, respectively.

VITAL MORPHOMETY OF RBC IN THEIR INTERACTION WITH STRESS HORMONES

2020 ◽  
pp. 146-147
Author(s):  
A. Deryugina ◽  
P. Ignatiev ◽  
V. Metelin ◽  
A. Belov ◽  
V. Petrov
Keyword(s):  
Normal State ◽  
Physiological State ◽  
Stress Hormones ◽  
Interference Microscopy ◽  
Extreme Condition ◽  
Laser Interference ◽  
Laser Interference Microscopy ◽  
As Stress ◽  
To Receive

The possibility to use the laser interference microscopy in order to assess the RBCs morphology in normal state and in interaction with cortisol and adrenalin as stress hormones was studied. It was established that the laser interference microscopy represented an important instrument permitting to receive the information about physiological state of the RBCs as well as of the organism in the whole in extreme condition. New aspects of cortisol and adrenalin impact on the RBC morphology are defined

Common Eider (Somateria Mollissima) Body Condition and Parasitic Load during a Mortality Event in the Baltic Proper

2018 ◽  
Vol 11 (3) ◽  
pp. 167-172 ◽  
Author(s):  
Svend-Erik Garbus ◽  
Peter Lyngs ◽  
Jens Peter Christensen ◽  
Kurt Buchmann ◽  
Igor Eulaers ◽  
...  
Keyword(s):  
Body Mass ◽  
High Mortality ◽  
Physiological Stress ◽  
Morphological Changes ◽  
Somateria Mollissima ◽  
Common Eiders ◽  
Baltic Proper ◽  
Average Body Mass ◽  
The Baltic ◽  
Average Body

During late spring of 2007 and 2015, we observed unusually high mortality of Common Eiders (Somateria mollissima) on Christiansø in the Baltic Proper. The number of dead birds (2007: 125; 2015: 110) composed 5–10% of the total colony. In 2015, we collected 15 (12 adult females, three subadult males) of the 110 recently deceased Common Eiders for detailed autopsy. The average body mass of the females was 1,040 g (920–1,160 g) which is ca 60% lower than what can be expected of healthy females during wintertime. Similarly, for the subadult males the average body mass of 1,203 g (1,070–1,300 g) comprised only 45% of what can be expected for healthy subadult males during winter. All 15 birds were thus severely emaciated and cachexic with general atrophy of muscles and internal organs. Hunger oedema, distended gall bladder, empty stomach, empty and dilated intestines and dilated cardiomyopathy were observed as well. In addition, all 15 Common Eiders were infected with high loads of the acanthocephalan parasite Polymorphus minutus. No gross morphological changes suggested toxicological, bacteriological or viral causes to the mortality. Taken together, our autopsy suggested starvation leading to secondary metabolic catabolism and eventually congestive heart failure. Five birds that were examined in 2007 showed the same symptoms. We suspect that the introduction of suboptimal feeding conditions in combination with a high parasite load over the last decade synergistically caused high physiological stress leading to population level effects manifested as high mortality.

scholarly journals MECHANISMS IN ENDOCRINOLOGY: Role of emotional stress in the pathophysiology of Graves' disease

2013 ◽  
Vol 168 (1) ◽  
pp. R13-R18 ◽  
Author(s):  
Géraldine Falgarone ◽  
Hassan M Heshmati ◽  
Régis Cohen ◽  
Gérard Reach
Keyword(s):  
Autoimmune Diseases ◽  
Stress Management ◽  
Stress Reduction ◽  
Stress Hormones ◽  
Graves Disease ◽  
T Helper ◽  
Clinical Observations ◽  
Effect Of Therapy ◽  
As Stress

The role of stress in the pathophysiology of Graves' disease is suggested by several clinical observations, by recent advances in immunology and by better understanding of autoimmune diseases which provides new insights into potential effects of stress hormones on T helper cell imbalance involved in the pathogenesis of autoimmune diseases. Stress management should therefore be an important part of the treatment of Graves' disease, as stress reduction may improve the effect of therapy. However, this field still requires interventional data to support stress management in the treatment of Graves' disease.

scholarly journals Cytokines and Other Mediators in Alopecia Areata

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Stamatis Gregoriou ◽  
Dafni Papafragkaki ◽  
George Kontochristopoulos ◽  
Eustathios Rallis ◽  
Dimitrios Kalogeromitros ◽  
...  
Keyword(s):  
Alopecia Areata ◽  
Stress Hormones ◽  
Disease Onset ◽  
Hla Antigens ◽  
Hair Follicles ◽  
Strong Component ◽  
Underlying Mechanisms ◽  
As Stress ◽  
Shed Light

Alopecia areata, a disease of the hair follicles with multifactorial etiology and a strong component of autoimmune origin, has been extensively studied as far as the role of several cytokines is concerned. So far, IFN-, interleukins, TNF-, are cytokines that are well known to play a major role in the pathogenesis of the disease, while several studies have shown that many more pathways exist. Among them, MIG, IP-10, BAFF, HLA antigens, MIG, as well as stress hormones are implicated in disease onset and activity. Within the scope of this paper, the authors attempt to shed light upon the complexity of alopecia areata underlying mechanisms and indicate pathways that may suggest future treatments.

Boom-bust like dynamics of invasive black bullhead (Ameiurus melas) in Lake Sava (Serbia)

2019 ◽  
Vol 26 (2) ◽  
pp. 153-164 ◽  
Author(s):  
Milica Jaćimović ◽  
Mirjana Lenhardt ◽  
Jasmina Krpo-Ćetković ◽  
Ivan Jarić ◽  
Zoran Gačić ◽  
...  
Keyword(s):  
Black Bullhead ◽  
Ameiurus Melas
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