Journal of Experimental Biology

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Variation in salinity tolerance, gill Na+/K+-ATPase,Na+/K+/2Cl– cotransporter and mitochondria-rich cell distribution in three salmonids Salvelinus namaycush, Salvelinus fontinalis and Salmo salar
Journal of Experimental Biology - Tập 210 Số 6 - Trang 1015-1024 - 2007
Junya Hiroi, Stephen D. McCormick
SUMMARY We compared seawater tolerance, gill Na+/K+-ATPase and Na+/K+/2Cl– cotransporter (NKCC)abundance, and mitochondria-rich cell (MRC) morphology of three salmonids,lake trout Salvelinus namaycush, brook trout Salvelinus fontinalis and Atlantic salmon Salmo salar. They were transferred directly from 0 p.p.t. (parts per thousand; freshwater) to 30...... hiện toàn bộ
Are hsps suitable for indicating stressed states in fish?
Journal of Experimental Biology - Tập 207 Số 1 - Trang 15-19 - 2004
George K. Iwama, Luis O.B. Afonso, Anne E. Todgham, Paige A. Ackerman, Kazumi Nakano
SUMMARY In response to most stressors, fish will elicit a generalized physiological stress response, which involves the activation of the hypothalamic-pituitary-interrenal axis (HPI). As in other vertebrates, this generalized stress response comprises physiological responses that are common to a wide range of environmental, physical and biological st...... hiện toàn bộ
Effect of Exercise on Amino Acid Concentrations in Skeletal Muscle and Plasma
Journal of Experimental Biology - Tập 160 Số 1 - Trang 149-165 - 1991
Jan Henriksson
ABSTRACT Protein is not normally an important energy fuel for exercising muscle. In spite of this, there is a significant increase in the rate of amino acid catabolism during exercise. This is secondary to the exercise-induced increase in several metabolic processes, such as hepatic gluconeogenesis and the citric acid cycle, where amino acid carbon i...... hiện toàn bộ
Assessing acoustic communication active space in the Lusitanian toadfish
Journal of Experimental Biology - - 2016
Daniel Alves, M. Clara P. Amorim, Paulo J. Fonseca
The active space of a signal is an important concept in acoustic communication as it has implications on the function and evolution of acoustic signals. However, it remains mostly unknown for fish since it has been measured in only a restricted number of species. We combined physiological and sound propagation approaches to estimate the communication range of the Lusitanian toadfish's (Hal...... hiện toàn bộ
A marine diatom-derived aldehyde induces apoptosis in copepod and sea urchin embryos
Journal of Experimental Biology - Tập 206 Số 19 - Trang 3487-3494 - 2003
Giovanna Romano, Gian Luigi Russo, Isabella Buttino, Adrianna Ianora, Antonio Miralto
SUMMARY The diatom-derived aldehyde 2-trans-4-trans-decadienal(DD) was tested as an apoptogenic inducer in both copepod and sea urchin embryos, using terminal-deoxynucleotidyl-transferase-mediated dUTP nick-end labelling (TUNEL), DNA fragmentation profiling (laddering) and an assay for caspase-3 activity. DD induced TUNEL positivity and DNA laddering...... hiện toàn bộ
Motoneurone task groups: coping with kinematic heterogeneity
Journal of Experimental Biology - Tập 115 Số 1 - Trang 137-146 - 1985
G. E. Loeb
ABSTRACT Physiological principles of motor control have generally been based on linear servocontrol theories in which transducers of force, length and velocity are used to provide feedback to the motor actuators. Within the past few years, recordings of the activity of motoneurones and proprioceptors during normal motor behaviour have indicated a div...... hiện toàn bộ
The biological importance of measuring individual variation
Journal of Experimental Biology - Tập 210 Số 9 - Trang 1613-1621 - 2007
D. L. Crawford, Marjorie F. Oleksiak
SUMMARY Functional genomics research using Fundulus heteroclitus has focused on variation among individuals because of the evolutionary importance and value of Fundulus in explaining the human condition (why individual humans are different and are affected differently by stress,disease and drugs). Among different populations and species of Fundulus, ...... hiện toàn bộ
Tracking Clock-Shifted Homing Pigeons From Familiar Release Sites
Journal of Experimental Biology - Tập 203 Số 2 - Trang 207-212 - 2000
Fransisco Bonadona, Richard A. Holland, Luigi Dall’Antonia, Tim Guilford, Silvano Benvenuti
ABSTRACT Clock-shifted homing pigeons were tracked from familiar sites 17.1 km and 23.5 km from the home loft in Pisa, Italy, using an on-board route recorder. At the first release site, north of home, the majority of clock-shifted birds had relatively straight tracks comparable with those of control birds. At the second release site, south of home, ...... hiện toàn bộ
The Internal Rhythm of Reproduction in Xerophilous Birds Under Conditions of Illumination and Darkness
Journal of Experimental Biology - Tập 35 Số 3 - Trang 666-670 - 1958
A. J. Marshall, D. L. Serventy
ABSTRACT A report that total darkness is more effective than illumination in the production of spermatogenesis in young of the xerophilous budgerygah is shown to be due to a misinterpretation of results. An internal rhythm of reproduction allows young male zebra finches (like young budgerygahs) to produce spermatozoa within 60 days in almost total da...... hiện toàn bộ
The Lethal Action of Soluble Metallic Salts on Fishes
Journal of Experimental Biology - Tập 4 Số 4 - Trang 378-390 - 1927
Kathleen E. Carpenter
ABSTRACTThe work of several years on the fauna of streams polluted by lead-mining(1. 2, 3) has revealed the fact that the destruction of fish-life in such streams is neither a matter of starvation nor emigration for lack of food, nor of spawn-destruction, but is a direct consequence of the action of lead-salts in solution (probably as the sulphate) upon the fishes ...... hiện toàn bộ
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