Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology最新文献_第2页

Differential fatty acids utilization across life stages in a Vespa species. 一种 Vespa 物种在不同生命阶段对脂肪酸的利用存在差异。

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-10 DOI: 10.1007/s00360-024-01589-7

Sofia Bouchebti, Eran Levin

{"title":"Differential fatty acids utilization across life stages in a Vespa species.","authors":"Sofia Bouchebti, Eran Levin","doi":"10.1007/s00360-024-01589-7","DOIUrl":"https://doi.org/10.1007/s00360-024-01589-7","url":null,"abstract":"Dietary fatty acids (FAs) are essential macronutrients affecting animal fitness, growth, and development. While the degree of saturation of FAs usually determines the level of absorption and allocation within the body, the utilization of dietary FAs across the life stages of individuals remains unknown. We used three different 13 C labeled FAs, with a different saturation level (linoleic acid (18:2), oleic acid (18:1), and palmitic acid (16:0)), to investigate the absorption and allocation of dietary FAs across the life stages of the Oriental hornet. Our results show that only larvae utilized all tested FAs as metabolic fuel, with palmitic acid being oxidized at the highest rate. Oleic and palmitic acids were predominantly incorporated into larval tissues, while oleic acid dominated pupal tissues. In contrast, linoleic and oleic acids were predominantly incorporated into adult tissues. These findings highlight a life stage-dependent shift in certain FAs utilization, with palmitic acid mostly utilized in early stages and linoleic acid in adulthood, while oleic acid remained consistently utilized across all life stages. This study emphasizes the importance of considering FA saturation and life stage dynamics in understanding FA utilization patterns.","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142402644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Apneic uptake of atmospheric O₂ by deeply hypothermic nestlings of the white-footed mouse (Peromyscus leucopus): circulation and lungs. 体温极低的白足鼠雏鼠对大气中氧气的窒息性吸收：循环和肺部。

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-08 DOI: 10.1007/s00360-024-01585-x

Richard W Hill, Jacob J Manteuffel, Bradley A White

{"title":"Apneic uptake of atmospheric O2 by deeply hypothermic nestlings of the white-footed mouse (Peromyscus leucopus): circulation and lungs.","authors":"Richard W Hill, Jacob J Manteuffel, Bradley A White","doi":"10.1007/s00360-024-01585-x","DOIUrl":"https://doi.org/10.1007/s00360-024-01585-x","url":null,"abstract":"Nestling white-footed mice (Peromyscus leucopus) are born in the earliest days of spring in cold climates. If the nestlings are by accident exposed to ambient temperatures near freezing (0-7 °C) at early ages (2-10 days old), they may experience body temperatures (Tbs) equally low. During such hypothermia, although their heart keeps beating, they become apneic (cease inhaling and exhaling). However, they have an exceptional ability (e.g., compared to Mus musculus) to tolerate these conditions for at least several hours, after which they revive if rewarmed by parents. This paper addresses the physiology of the apneic period. We show that apneic, hypothermic nestlings undergo physiologically important exchanges of gases with the atmosphere. These gas exchanges do not occur across the skin. Instead they occur via the trachea and lungs even though the animals are apneic. Most significantly, when hypothermic neonates are in apnea in ordinary air, they take up O2 steadily from the atmosphere throughout the apneic period, and the evidence available indicates that this O2 uptake is essential for the nestlings' survival. At Tbs of 2-7 °C, the nestlings' rate of O2 consumption varies quasi-exponentially with Tb and averages 0.04 mL O2 g- 1 h- 1, closely similar to the rate expressed by adult mammalian hibernators in hibernation at similar Tbs. Morphometric analysis indicates that, at all focal ages, O2 transport along the full length of the trachea can take place by diffusion at rates adequate to meet the measured rates of metabolic O2 consumption.","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142395561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The physiological significance of plasma-accessible carbonic anhydrase in the respiratory systems of fishes. 鱼类呼吸系统中血浆可获得碳酸酐酶的生理意义。

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-01 Epub Date: 2024-06-06 DOI: 10.1007/s00360-024-01562-4

Till S Harter, Angelina M Dichiera, Andrew J Esbaugh

{"title":"The physiological significance of plasma-accessible carbonic anhydrase in the respiratory systems of fishes.","authors":"Till S Harter, Angelina M Dichiera, Andrew J Esbaugh","doi":"10.1007/s00360-024-01562-4","DOIUrl":"10.1007/s00360-024-01562-4","url":null,"abstract":"Carbonic anhydrase (CA) activity is ubiquitously found in all vertebrate species, tissues and cellular compartments. Most species have plasma-accessible CA (paCA) isoforms at the respiratory surfaces, where the enzyme catalyzes the conversion of plasma bicarbonate to carbon dioxide (CO2) that can be excreted by diffusion. A notable exception are the teleost fishes that appear to lack paCA at their gills. The present review: (i) recapitulates the significance of CA activity and distribution in vertebrates; (ii) summarizes the current evidence for the presence or absence of paCA at the gills of fishes, from the basal cyclostomes to the derived teleosts and extremophiles such as the Antarctic icefishes; (iii) explores the contribution of paCA to organismal CO2 excretion in fishes; and (iv) the functional significance of its absence at the gills, for the specialized system of O2 transport in most teleosts; (v) outlines the multiplicity and isoform distribution of membrane-associated CAs in fishes and methodologies to determine their plasma-accessible orientation; and (vi) sketches a tentative time line for the evolutionary dynamics of branchial paCA distribution in the major groups of fishes. Finally, this review highlights current gaps in the knowledge on branchial paCA function and provides recommendations for future work.","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":"717-737"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141260589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cellular mechanisms of ion and acid-base regulation in teleost gill ionocytes. 鱼鳃离子细胞的离子和酸碱调节细胞机制

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-01 Epub Date: 2024-05-18 DOI: 10.1007/s00360-024-01560-6

Anthony Kovac, Greg G Goss

引用次数: 0

Fish gill chemosensing: knowledge gaps and inconsistencies. 鱼鳃化学传感：知识差距和不一致。

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-01 Epub Date: 2024-05-17 DOI: 10.1007/s00360-024-01553-5

Erin M Leonard, Cosima S Porteus, Deidre Brink, William K Milsom

{"title":"Fish gill chemosensing: knowledge gaps and inconsistencies.","authors":"Erin M Leonard, Cosima S Porteus, Deidre Brink, William K Milsom","doi":"10.1007/s00360-024-01553-5","DOIUrl":"10.1007/s00360-024-01553-5","url":null,"abstract":"In this review, we explore the inconsistencies in the data and gaps in our knowledge that exist in what is currently known regarding gill chemosensors which drive the cardiorespiratory reflexes in fish. Although putative serotonergic neuroepithelial cells (NEC) dominate the literature, it is clear that other neurotransmitters are involved (adrenaline, noradrenaline, acetylcholine, purines, and dopamine). And although we assume that these agents act on neurons synapsing with the NECs or in the afferent or efferent limbs of the paths between chemosensors and central integration sites, this process remains elusive and may explain current discrepancies or species differences in the literature. To date it has been impossible to link the distribution of NECs to species sensitivity to different stimuli or fish lifestyles and while the gills have been shown to be the primary sensing site for respiratory gases, the location (gills, oro-branchial cavity or elsewhere) and orientation (external/water or internal/blood sensing) of the NECs are highly variable between species of water and air breathing fish. Much of what has been described so far comes from studies of hypoxic responses in fish, however, changes in CO2, ammonia and lactate have all been shown to elicit cardio-respiratory responses and all have been suggested to arise from stimulation of gill NECs. Our view of the role of NECs is broadening as we begin to understand the polymodal nature of these cells. We begin by presenting the fundamental picture of gill chemosensing that has developed, followed by some key unanswered questions about gill chemosensing in general.","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":"1-33"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140961162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ammonia excretion by the fish gill: discoveries and ideas that shaped our current understanding. 鱼鳃的氨排泄：形成我们当前认识的发现和观点。

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-01 Epub Date: 2024-06-07 DOI: 10.1007/s00360-024-01561-5

Alex M Zimmer

{"title":"Ammonia excretion by the fish gill: discoveries and ideas that shaped our current understanding.","authors":"Alex M Zimmer","doi":"10.1007/s00360-024-01561-5","DOIUrl":"10.1007/s00360-024-01561-5","url":null,"abstract":"The fish gill serves many physiological functions, among which is the excretion of ammonia, the primary nitrogenous waste in most fishes. Although it is the end-product of nitrogen metabolism, ammonia serves many physiological functions including acting as an acid equivalent and as a counter-ion in mechanisms of ion regulation. Our current understanding of the mechanisms of ammonia excretion have been influenced by classic experimental work, clever mechanistic approaches, and modern molecular and genetic techniques. In this review, I will overview the history of the study of ammonia excretion by the gills of fishes, highlighting the important advancements that have shaped this field with a nearly 100-year history. The developmental and evolutionary implications of an ammonia and gill-dominated nitrogen regulation strategy in most fishes will also be discussed. Throughout the review, I point to areas in which more work is needed to push forward this field of research that continues to produce novel insights and discoveries that will undoubtedly shape our overall understanding of fish physiology.","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":"697-715"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141288929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Causes and consequences of gas bubble trauma on fish gill function. 气泡创伤对鱼鳃功能的影响和后果

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-01 Epub Date: 2024-03-07 DOI: 10.1007/s00360-024-01538-4

Naomi K Pleizier, Colin J Brauner

引用次数: 0

The multifunctional fish gill. 多功能鱼鳃

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-01 Epub Date: 2024-09-23 DOI: 10.1007/s00360-024-01586-w

Steve F Perry, Bernd Pelster

引用次数: 0

Endocrine control of gill ionocyte function in euryhaline fishes. 极海洋鱼类鳃离子细胞功能的内分泌控制

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-01 Epub Date: 2024-05-13 DOI: 10.1007/s00360-024-01555-3

Jason P Breves, Ciaran A Shaughnessy

{"title":"Endocrine control of gill ionocyte function in euryhaline fishes.","authors":"Jason P Breves, Ciaran A Shaughnessy","doi":"10.1007/s00360-024-01555-3","DOIUrl":"10.1007/s00360-024-01555-3","url":null,"abstract":"The endocrine system is an essential regulator of the osmoregulatory organs that enable euryhaline fishes to maintain hydromineral balance in a broad range of environmental salinities. Because branchial ionocytes are the primary site for the active exchange of Na+, Cl-, and Ca2+ with the external environment, their functional regulation is inextricably linked with adaptive responses to changes in salinity. Here, we review the molecular-level processes that connect osmoregulatory hormones with branchial ion transport. We focus on how factors such as prolactin, growth hormone, cortisol, and insulin-like growth-factors operate through their cognate receptors to direct the expression of specific ion transporters/channels, Na+/K+-ATPases, tight-junction proteins, and aquaporins in ion-absorptive (freshwater-type) and ion-secretory (seawater-type) ionocytes. While these connections have historically been deduced in teleost models, more recently, increased attention has been given to understanding the nature of these connections in basal lineages. We conclude our review by proposing areas for future investigation that aim to fill gaps in the collective understanding of how hormonal signaling underlies ionocyte-based processes.","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":"663-684"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140913389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of structural remodelling on gill physiology. 结构重塑对鳃生理的影响

IF 1.7 3区生物学

Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2024-10-01 Epub Date: 2024-05-17 DOI: 10.1007/s00360-024-01558-0

Kathleen M Gilmour, Andy J Turko

{"title":"Effects of structural remodelling on gill physiology.","authors":"Kathleen M Gilmour, Andy J Turko","doi":"10.1007/s00360-024-01558-0","DOIUrl":"10.1007/s00360-024-01558-0","url":null,"abstract":"The complex relationships between the structure and function of fish gills have been of interest to comparative physiologists for many years. Morphological plasticity of the gill provides a dynamic mechanism to reversibly alter its structure in response to changes in the conditions experienced by the fish. The best known example of gill remodelling is the growth or retraction of cell masses between the lamellae, a rapid process that alters the lamellar surface area that is exposed to the water (i.e. the functional lamellar surface area). Decreases in environmental O2 availability and/or increases in metabolic O2 demand stimulate uncovering of the lamellae, presumably to increase the capacity for O2 uptake. This review addresses four questions about gill remodelling: (1) what types of reversible morphological changes occur; (2) how do these changes affect physiological function from the gill to the whole animal; (3) what factors regulate reversible gill plasticity; and (4) is remodelling phylogenetically widespread among fishes? We address these questions by surveying the current state of knowledge of gill remodelling in fishes, with a focus on identifying gaps in our understanding that future research should consider.","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":"595-609"},"PeriodicalIF":1.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140961158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0