keyword
https://read.qxmd.com/read/19181893/evidence-for-cranial-endothermy-in-the-opah-lampris-guttatus
#21
JOURNAL ARTICLE
Rosa M Runcie, Heidi Dewar, Donald R Hawn, Lawrence R Frank, Kathryn A Dickson
Cranial endothermy evolved independently in lamnid sharks, billfishes and tunas, and is thought to minimize the effects of ambient temperature change on both vision and neural function during deep dives. The opah, Lampris guttatus, is a large epipelagic-mesopelagic predator that makes repeated dives into cool waters to forage. To determine if L. guttatus exhibits cranial endothermy, we measured cranial temperatures in live, decked fish and identified potential sources of heat and mechanisms to conserve heat...
February 2009: Journal of Experimental Biology
https://read.qxmd.com/read/18429442/an-epizootic-of-caligus-chiastos-on-farmed-southern-bluefin-tuna-thunnus-maccoyii-off-south-australia
#22
JOURNAL ARTICLE
Craig J Hayward, Hamish M Aiken, Barbara F Nowak
In some years, large numbers of Caligus chiastos have been observed on the external surfaces of southern bluefin tuna, particularly on the head and eyes, in some sea cages in Spencer Gulf, Australia. As no epidemiological data were available, we monitored sea lice on tuna (N = 130) in 4 research cages sampled at 6 wk intervals during the 2005 farming season. No lice were observed on a sample of 10 wild-caught tuna when the cohort was transferred to cages in early April. By late May more than half the sampled tuna (22 of 40) were infected, with up to 42 parasites; we also recorded one unidentified Caligus sp...
March 3, 2008: Diseases of Aquatic Organisms
https://read.qxmd.com/read/18387327/the-role-of-thyroid-hormones-during-the-development-of-eye-pigmentation-in-the-pacific-bluefin-tuna-thunnus-orientalis
#23
JOURNAL ARTICLE
Yutaka Kawakami, Kenichi Yokoi, Hidemi Kumai, Hiromi Ohta
Thyroid hormones (THs) are essential for the embryonic and post-embryonic development of fish. We studied the role of THs during the early, post-embryonic, development of Pacific bluefin tuna. Embryos were treated with L-thyroxine (T(4)) or the anti-thyroid drug methimazole (MMI), and reared in microtitre plates for 3 days. Immersion in MMI, but not T(4), led to retardation of retinal pigment epithelium (RPE) pigmentation 3 days post-hatching (dph). Concurrent immersion in T(4) and MMI had no effect of RPE pigmentation...
May 2008: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://read.qxmd.com/read/17075273/grades-of-43-fish-species-in-japan-based-on-ige-binding-activity
#24
COMPARATIVE STUDY
Harumi Koyama, Michiko Kakami, Makiko Kawamura, Reiko Tokuda, Yasuto Kondo, Ikuya Tsuge, Kazue Yamada, Toshitaka Yasuda, Atsuo Urisu
BACKGROUND: Hypersensitivity reactions to fish are a common food allergy, but IgE-binding activity to fish species have not been fully elucidated. The aim of this study was to identify fish with high binding activity to IgE in sera from Japanese fish-hypersensitive individuals. METHODS: 38 children with a history of at least one episode of hypersensitivity after ingestion of fish were enrolled and 34 children with no history of reactions and negative IgE results for at least five kinds of fish antigen were included as controls...
September 2006: Allergology International: Official Journal of the Japanese Society of Allergology
https://read.qxmd.com/read/16583494/dry-eyes-eat-more-fish
#25
(no author information available yet)
No abstract text is available yet for this article.
April 2006: Health News
https://read.qxmd.com/read/15674772/evolution-and-consequences-of-endothermy-in-fishes
#26
REVIEW
Kathryn A Dickson, Jeffrey B Graham
Regional endothermy, the conservation of metabolic heat by vascular countercurrent heat exchangers to elevate the temperature of the slow-twitch locomotor muscle, eyes and brain, or viscera, has evolved independently among several fish lineages, including lamnid sharks, billfishes, and tunas. All are large, active, pelagic species with high energy demands that undertake long-distance migrations and move vertically within the water column, thereby encountering a range of water temperatures. After summarizing the occurrence of endothermy among fishes, the evidence for two hypothesized advantages of endothermy in fishes, thermal niche expansion and enhancement of aerobic swimming performance, is analyzed using phylogenetic comparisons between endothermic fishes and their ectothermic relatives...
November 2004: Physiological and Biochemical Zoology: PBZ
https://read.qxmd.com/read/15649365/warm-eyes-provide-superior-vision-in-swordfishes
#27
COMPARATIVE STUDY
Kerstin A Fritsches, Richard W Brill, Eric J Warrant
Large and powerful ocean predators such as swordfishes, some tunas, and several shark species are unique among fishes in that they are capable of maintaining elevated body temperatures (endothermy) when hunting for prey in deep and cold water . In these animals, warming the central nervous system and the eyes is the one common feature of this energetically costly adaptation . In the swordfish (Xiphias gladius), a highly specialized heating system located in an extraocular muscle specifically warms the eyes and brain up to 10 degrees C-15 degrees C above ambient water temperatures ...
January 11, 2005: Current Biology: CB
https://read.qxmd.com/read/15579559/cold-stable-eye-lens-crystallins-of-the-antarctic-nototheniid-toothfish-dissostichus-mawsoni-norman
#28
COMPARATIVE STUDY
Andor J Kiss, Amir Y Mirarefi, Subramanian Ramakrishnan, Charles F Zukoski, Arthur L Devries, Chi-Hing C Cheng
The eye lenses of the Antarctic nototheniid fishes that inhabit the perennially freezing Antarctic seawater are transparent at -2 degrees C, whereas the cold-sensitive mammalian and tropical fish lenses display cold-induced cataract at 20 degrees C and 7 degrees C, respectively. No cold-cataract occurs in the giant Antarctic toothfish Dissostichus mawsoni lens when cooled to temperatures as low as -12 degrees C, indicating highly cold-stable lens proteins. To investigate this cold stability, we characterised the lens crystallin proteins of the Antarctic toothfish, in parallel with those of the sub-tropical bigeye tuna Thunnus obesus and the endothermic cow Bos taurus, representing three disparate thermal climes (-2 degrees C, 18 degrees C and 37 degrees C, respectively)...
December 2004: Journal of Experimental Biology
https://read.qxmd.com/read/15491404/new-insights-into-the-proton-dependent-oxygen-affinity-of-root-effect-haemoglobins
#29
REVIEW
C Bonaventura, A L Crumbliss, R E Weber
A long-standing puzzle with regard to protein structure/function relationships is the proton-dependent modification of haemoglobin (Hb) structure that causes oxygen to be unloaded from Root effect Hbs into the swim bladders and eyes of fish even against high oxygen pressure gradients. Although oxygen unloading in Root effect Hbs has generally been attributed to proton-dependent stabilization of the T-state, protonation of Root effect Hbs can alter their ligand affinities in both R- and T-state conformations and either stabilize the T-state or destabilize the R-state...
November 2004: Acta Physiologica Scandinavica
https://read.qxmd.com/read/12077164/effects-of-temperature-epinephrine-and-ca-2-on-the-hearts-of-yellowfin-tuna-thunnus-albacares
#30
JOURNAL ARTICLE
Jason M Blank, Jeffery M Morrissette, Peter S Davie, Barbara A Block
Tuna are endothermic fish with high metabolic rates, cardiac outputs and aerobic capacities. While tuna warm their skeletal muscle, viscera, brain and eyes, their hearts remain near ambient temperature, raising the possibility that cardiac performance may limit their thermal niches. We used an in situ perfused heart preparation to investigate the effects of acute temperature change and the effects of epinephrine and extracellular Ca(2+) on cardiac function in yellowfin tuna (Thunnus albacares). Heart rate showed a strong temperature-dependence, ranging from 20 beats min(-1) at 10 degrees C to 109 beats min(-1) at 25 degrees C...
July 2002: Journal of Experimental Biology
https://read.qxmd.com/read/11567893/major-and-c-series-gangliosides-in-lenticular-tissues-mammals-to-molluscs
#31
JOURNAL ARTICLE
M Saito, K Sugiyama
Gangliosides of eye lenses were examined in mammals (rat, rabbits, pig, cow), bird (chicken), reptile (terrapin), amphibian (bullfrog), bony fish (red sea bream, bluefin tuna, bonito, Pacific mackerel) and molluscs (common squid, Pacific octopus). Besides the fact that GM3 was the common ganglioside species, the composition of major gangliosides in mammalian eye lenses significantly differed from each other. While gangliotetraose gangliosides were abundant in rat eye lens, they did not constitute major components in porcine and bovine tissues...
October 2001: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://read.qxmd.com/read/9930399/assessment-of-the-arachidonic-acid-content-in-foods-commonly-consumed-in-the-american-diet
#32
JOURNAL ARTICLE
L Taber, C H Chiu, J Whelan
Arachidonic acid (AA) is an extremely important fatty acid involved in cell regulation. When provided in the diet, it is cogently incorporated in membrane phospholipids and enhances eicosanoid biosynthesis in vivo and in vitro; however, controversy exists as to the levels of AA in food and in the diet. This study determined the amount of AA in cooked and raw portions of beef (rib eye), chicken (breast and thigh), eggs, pork (loin), turkey (breast), and tuna; it compared these results to values published in Agriculture Handbook No...
December 1998: Lipids
https://read.qxmd.com/read/9684528/fish-induced-anaphylactic-reaction-report-of-one-case
#33
JOURNAL ARTICLE
H Y Lin, S D Shyur, J L Fu, Y C Lai, J S Lin
In the past 2 years, a 4 year-old boy has had an anaphylactic reaction whenever he contacted food prepared with fish. The symptoms included intense itching in the throat and eyes, which progressed to generalized urticaria and facial angioedema. This was accompanied by cough, wheezing and dyspnea. Many fish preparations caused these episodes including several different kinds of fish (cod, tuna, salmon, trout, eel...), fish soup, chopsticks contaminated with fish preparations and canned fish. Elevated levels of total serum IgE (224 IU/ml) and specific IgE for cod (93...
May 1998: Zhonghua Minguo Xiao Er Ke Yi Xue Hui za Zhi [Journal]
https://read.qxmd.com/read/7083823/tracing-phylogeny-through-proteins-of-the-layers-of-the-eye-lens-nucleus
#34
COMPARATIVE STUDY
A C Smith
1. In accordance with the concept that ontogeny recapitulates phylogeny, it was hypothesized that the proteins in the eye lens nucleus increase in antiquity with depth of layer and so can be used to reconstruct the phylogenetic past. 2. This hypothesis was tested by analyzing electrophoretic patterns of proteins from solubilized nuclear lens layers of three tuna species with well-studied phylogenies. The tuna species are the albacore, Thunnus alalunga; yellowfin, T. albacares; and skipjack, Katsuwonus pelamis...
1982: Comparative Biochemistry and Physiology. B, Comparative Biochemistry
https://read.qxmd.com/read/5795815/effects-of-urea-on-solubility-and-electrophoretic-characteristics-of-protein-from-the-eye-lens-nucleus-in-bigeye-and-skipjack-tunas-and-in-menpachi
#35
JOURNAL ARTICLE
A C Smith
No abstract text is available yet for this article.
April 1969: Comparative Biochemistry and Physiology
https://read.qxmd.com/read/5758384/effects-of-sodium-chloride-concentration-on-solubility-and-electrophoretic-characteristics-of-protein-from-the-eye-lens-nucleus-in-a-yellowfin-tuna-thunnus-albacares-and-in-a-desert-wood-rat-neotoma-lepida
#36
JOURNAL ARTICLE
https://read.qxmd.com/read/5440931/electrophoretic-solubility-and-thermostability-differences-in-proteins-of-eye-lens-nuclei-from-two-closely-related-fish-species-the-yellowfin-tuna-and-the-bigeye-tuna
#37
JOURNAL ARTICLE
A C Smith
No abstract text is available yet for this article.
March 1, 1970: Comparative Biochemistry and Physiology
https://read.qxmd.com/read/5426553/permeability-of-the-eye-lens-capsule-of-the-bigeye-tuna-to-nuclear-eye-lens-proteins
#38
JOURNAL ARTICLE
A C Smith
No abstract text is available yet for this article.
May 1, 1970: Comparative Biochemistry and Physiology
https://read.qxmd.com/read/5132536/the-soluble-proteins-in-eye-lens-nuclei-of-albacore-bluefin-tuna-and-bonito
#39
JOURNAL ARTICLE
A C Smith
No abstract text is available yet for this article.
August 15, 1971: Comparative Biochemistry and Physiology. B, Comparative Biochemistry
https://read.qxmd.com/read/4145250/regulation-of-brain-and-eye-temperatures-by-the-bluefin-tuna
#40
JOURNAL ARTICLE
D S Linthicum, F G Carey
No abstract text is available yet for this article.
October 1, 1972: Comparative Biochemistry and Physiology. A, Comparative Physiology
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