Search Results - "Wegner, Nicholas C."

Whole-body endothermy in a mesopelagic fish, the opah, Lampris guttatus by Wegner, Nicholas C., Snodgrass, Owyn E., Dewar, Heidi, Hyde, John R.

“…Endothermy (the metabolic production and retention of heat to warm body temperature above ambient) enhances physiological function, and whole-body endothermy…”
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Analytical methods matter too: Establishing a framework for estimating maximum metabolic rate for fishes by Prinzing, Tanya S., Zhang, Yangfan, Wegner, Nicholas C., Dulvy, Nicholas K.

“…Advances in experimental design and equipment have simplified the collection of maximum metabolic rate (MMR) data for a more diverse array of water‐breathing…”
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Ecological lifestyles and the scaling of shark gill surface area by Bigman, Jennifer S., Pardo, Sebastián A., Prinzing, Tanya S., Dando, Marc, Wegner, Nicholas C., Dulvy, Nicholas K.

“…Fish gill surface area varies across species and with respect to ecological lifestyles. The majority of previous studies only qualitatively describe gill…”
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Spiracular air breathing in polypterid fishes and its implications for aerial respiration in stem tetrapods by Graham, Jeffrey B., Wegner, Nicholas C., Miller, Lauren A., Jew, Corey J., Lai, N Chin, Berquist, Rachel M., Frank, Lawrence R., Long, John A.

“…The polypterids (bichirs and ropefish) are extant basal actinopterygian (ray-finned) fishes that breathe air and share similarities with extant lobe-finned…”
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Gill morphometrics in relation to gas transfer and ram ventilation in high-energy demand teleosts: Scombrids and billfishes by Wegner, Nicholas C., Sepulveda, Chugey A., Bull, Kristina B., Graham, Jeffrey B.

“…This comparative study of the gill morphometrics in scombrids (tunas, bonitos, and mackerels) and billfishes (marlins, swordfish) examines features of gill…”
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Fish Specialize Their Metabolic Performance to Maximize Bioenergetic Efficiency in Their Local Environment: Conspecific Comparison Between Two Stocks of Pacific Chub Mackerel (Scomber japonicus) by Guo, Chenying, Ito, Shin-ichi, Yoneda, Michio, Kitano, Hajime, Kaneko, Hitoshi, Enomoto, Megumi, Aono, Tomoya, Nakamura, Masahiro, Kitagawa, Takashi, Wegner, Nicholas C., Dorval, Emmanis

“…Species-specific ecological traits in fishes are likely to vary between populations or stocks due to differences in regional oceanic conditions, such as…”
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George Hughes and the history of fish ventilation: From Du Verney to the present by Wegner, Nicholas C., Graham, Jeffrey B.

“…This paper traces the research history of fish ventilation from its origins in the early 1700s to the present with emphasis on the work of George M. Hughes,…”
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Revisiting a central prediction of the Gill Oxygen Limitation Theory: Gill area index and growth performance by Bigman, Jennifer S., Wegner, Nicholas C., Dulvy, Nicholas K.

“…The Gill Oxygen Limitation Theory (GOLT) posits that a mismatch in oxygen supply and demand stemming from geometric constraints on gill surface area limits…”
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Gills, growth and activity across fishes by Bigman, Jennifer S., Wegner, Nicholas C., Dulvy, Nicholas K.

“…Life history theory suggests that maximum size and growth evolve to maximize fitness. In contrast, the Gill Oxygen Limitation Theory (GOLT) suggests that…”
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Relative sarcolipin (SLN) and sarcoplasmic reticulum Ca 2+ ATPase (SERCA1) transcripts levels in closely related endothermic and ectothermic scombrid fishes: Implications for molecular basis of futile calcium cycle non-shivering thermogenesis (NST) by Robinson, Sean, Wegner, Nicholas C, Sepulveda, Chugey A, Franck, Jens P C

“…Regional endothermy is the ability of an animal to elevate the temperature of specific regions of the body above that of the surrounding environment and has…”
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Relative sarcolipin (SLN) and sarcoplasmic reticulum Ca2+ ATPase (SERCA1) transcripts levels in closely related endothermic and ectothermic scombrid fishes: Implications for molecular basis of futile calcium cycle non-shivering thermogenesis (NST) by Robinson, Sean, Wegner, Nicholas C., Sepulveda, Chugey A., Franck, Jens P.C.

“…Regional endothermy is the ability of an animal to elevate the temperature of specific regions of the body above that of the surrounding environment and has…”
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Temperature independence of haemoglobin–oxygen affinity in smalleye Pacific opah ( Lampris incognitus ) and swordfish ( Xiphias gladius ) by Morrison, Phillip R., Bernal, Diego, Sepulveda, Chugey A., Wegner, Nicholas C., Brauner, Colin J.

“…ABSTRACT Smalleye Pacific opah and swordfish can conserve metabolic heat and maintain specific body regions warmer than ambient water temperature (i.e…”
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The allometric scaling of oxygen supply and demand in the California horn shark, Heterodontus francisci by Prinzing, Tanya S, Bigman, Jennifer S, Skelton, Zachary R, Dulvy, Nicholas K, Wegner, Nicholas C

“…The gill surface area of aquatic ectotherms is thought to be closely linked to the ontogenetic scaling of metabolic rate, a relationship that is often used to…”
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Laboratory‐based measures of temperature preference and metabolic thermal sensitivity provide insight into the habitat utilisation of juvenile California horn shark (Heterodontus francisci) and leopard shark (Triakis semifasciata) by Skelton, Zachary R., Prinzing, Tanya S., Hastings, Philip A., Wegner, Nicholas C.

“…Laboratory‐based studies examining fish physiological and behavioural responses to temperature can provide important insight into species‐specific habitat…”
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Endothermy in the smalleye opah (Lampris incognitus): A potential role for the uncoupling protein sarcolipin by Franck, Jens P.C., Slight-Simcoe, Eva, Wegner, Nicholas C.

“…Sarcolipin (SLN) is a small transmembrane protein that in mice has been shown to uncouple the calcium ATPase pump of the sarcoplasmic reticulum, resulting in…”
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Reduced swimming and metabolic fitness of aquaculture-reared California Yellowtail (Seriola dorsalis) in comparison to wild-caught conspecifics by Wegner, Nicholas C., Drawbridge, Mark A., Hyde, John R.

“…Aspects of swimming and metabolic physiology were measured in aquaculture-reared California Yellowtail (Seriola dorsalis) in comparison to wild-caught…”
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Smaller body size under warming is not due to gill-oxygen limitation in a cold-water salmonid by Lonthair, Joshua K, Wegner, Nicholas C, Cheng, Brian S, Fangue, Nann A, O'Donnell, Matthew J, Regish, Amy M, Swenson, John D, Argueta, Estefany, McCormick, Stephen D, Letcher, Benjamin H, Komoroske, Lisa M

“…Declining body size in fishes and other aquatic ectotherms associated with anthropogenic climate warming has significant implications for future fisheries…”
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Functional morphology of the gills of the shortfin mako, Isurus oxyrinchus, a lamnid shark by Wegner, Nicholas C., Sepulveda, Chugey A., Olson, Kenneth R., Hyndman, Kelly A., Graham, Jeffrey B.

“…This study examines the functional gill morphology of the shortfin mako, Isurus oxyrinchus, to determine the extent to which its gill structure is convergent…”
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Ontogenetic changes in cutaneous and branchial ionocytes and morphology in yellowfin tuna (Thunnus albacares) larvae by Kwan, Garfield T., Wexler, Jeanne B., Wegner, Nicholas C., Tresguerres, Martin

“…The development of osmoregulatory and gas exchange organs was studied in larval yellowfin tuna ( Thunnus albacares ) from 2 to 25 days post-hatching…”
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The gill oxygen limitation hypothesis remains unsupported by experimental evidence. Response to 'Testing mechanistic theories must be based on correct interpretations' by Lonthair, Joshua K, Wegner, Nicholas C, Cheng, Brian S, Fangue, Nann A, O'Donnell, Matthew J, Regish, Amy M, Swenson, John D, Argueta, Estefany, McCormick, Stephen D, Letcher, Benjamin H, Komoroske, Lisa M

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