Conservation Physiology最新文献

{"title":"Correction to: Disentangling the effects of resource level and temperature dependence on the performance of fish in different guilds.","authors":"","doi":"10.1093/conphys/coag050","DOIUrl":"https://doi.org/10.1093/conphys/coag050","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.1093/conphys/coag005.].</p>","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag050"},"PeriodicalIF":2.5,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13394190/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148581295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal acclimation and meal item shape postprandial aerobic performance in the American lobster (<i>Homarus americanus</i>).","authors":"Madeleine Yung, Amalia M Harrington, Krista Kraskura, Alyssa Benoit, Halli Bair, Gail D Schwieterman","doi":"10.1093/conphys/coag049","DOIUrl":"10.1093/conphys/coag049","url":null,"abstract":"<p><p>Rapid warming in the Gulf of Maine and shifts in bait usage in Maine's lobster industry are altering the thermal and nutritional landscapes for American lobsters (Homarus americanus), with unknown sublethal impacts on lobster physiology. Specific dynamic action (SDA) is the postprandial rise in metabolism that comprises the energy needed to digest and assimilate a meal. SDA may influence lobsters' survival by occupying a portion of their aerobic scope, thus limiting their capacity to deal with environmental stressors. Here, we used intermittent-flow respirometry to investigate the combined impacts of acclimation temperature (15 or 18°C) and the consumption of a bait item [frozen menhaden (Brevoortia tyrannus), fresh mussel (Mytilus edulis), or salted pig hide (Sus domesticus)] on aerobic metabolism and SDA in adult male lobsters. While standard metabolic rate and peak SDA were not significantly impacted by temperature, SDA duration was, indicating thermal plasticity and resilience to present and near-future oceanic conditions. Postprandial residual aerobic scope was not significantly impacted by bait item, suggesting tolerance of short-term nutritional variation. Lobsters fed pig hide demonstrated the greatest peak SDA, likely due to its higher caloric content and an artificially reduced need for mechanical digestion of menhaden and mussel hard parts. Our findings demonstrate that while metabolic function appears robust to moderate warming and altered nutrition in isolation, temperature-diet interactions can constrain maximum aerobic capacity with potential implications for postcapture survival and bait regulation.</p>","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag049"},"PeriodicalIF":2.5,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13390579/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148563812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the potential of subcutaneous biologging tools for physiological monitoring in a large terrestrial mammal, the Guanaco (<i>Lama guanicoe</i>).","authors":"Antonella Panebianco, María V Rago, Pablo F Gregorio, Fiama Peña Lodis, Megan A Owen, Valeria Pomponio, María P Pompei, Melina Anello, Natalia M Schroeder, Ramiro Ovejero, Pablo Carmanchahi","doi":"10.1093/conphys/coag048","DOIUrl":"10.1093/conphys/coag048","url":null,"abstract":"<p><p>Physiological responses of animals to environmental and anthropogenic stressors are fundamental to effective conservation and wildlife management. Continuous monitoring of heart rate (HR) and body temperature yields key information on energy expenditure, stress, reproduction and health status. However, acquiring long-term physiological data from free-ranging large mammals remains technically challenging. Subcutaneous implantable biologgers represent a promising approach, yet concerns about device retention, data quality and animal welfare can constrain their widespread adoption. In this study, we assessed the feasibility of subcutaneous biologging to monitor HR and subcutaneous body temperature in guanacos (<i>Lama guanicoe</i>), the largest wild ungulate in South America and a species currently facing increasing anthropogenic threats. Two implantation trials were performed in captive adult females, each employing distinct biologger models and surgical techniques. The initial trial, which used a larger device implanted in the pectoral region, resulted in complete device expulsion within 4 weeks, despite successful surgeries and apparent normal wound healing. Conversely, the second trial, utilizing a smaller logger implanted in the intercostal region, achieved full device retention throughout the deployment period, with minimal tissue reaction and successful data retrieval. While the results suggest that device size and implantation site are influential, the simultaneous variation in multiple aspects of experimental design prevents a definitive attribution of retention success to a single variable. The retained devices provided the first continuous records of HR and subcutaneous body temperature in this species, revealing pronounced daily rhythms and temperature patterns that correlated with ambient temperature. Overall, these results underscore the necessity of species-specific pilot validation before field deployment to minimize study failure and ensure animal welfare. By outlining practical considerations for implantable biologging in large ungulates, this study provides insight to help guide the development of physiological monitoring protocols for future field applications.</p>","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag048"},"PeriodicalIF":2.5,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13368605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148457657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An ecophysiological approach to improving health outcomes of ornamental shrimp during aquarium trade and transportation.","authors":"Sancha Conway Holroyd, John I Spicer, Robert P Ellis, Lucy M Turner","doi":"10.1093/conphys/coag046","DOIUrl":"10.1093/conphys/coag046","url":null,"abstract":"<p><p>Ecophysiology examines the interactions between an organism's physiology and its environment. It seeks to understand how an organism functions and adapts under changing conditions. This has direct applications to live-trade aquaculture sectors, including the ornamental aquarium trade, where traded animals experience a variety of changing, and often stressful, environmental conditions that can threaten their health and survival. This review proposes a role for ecophysiology in managing organismal health, using Hatch (1962) theoretical framework of disease and dysfunction as a foundation for defining and distinguishing health. We focus on tropical (marine and freshwater) ornamental shrimp as an exemplar group to highlight critical research gaps and demonstrate how ecophysiological principles can translate into improved health management strategies for animal during trade and transport. Specifically, we (i) show how ecophysiology can be used to inform an operational definition of health, using Hatch (1962) scheme as originally applied to occupational health, (ii) consider how ecophysiological approaches could be applied to ornamental management to improve health outcomes for traded animals, (iii) review current knowledge of how key physico-chemical parameters (temperature, dissolved oxygen, salinity, carbonate chemistry and nitrogenous waste) affect the physiology of tropical ornamental shrimp and (iv) identify knowledge gaps and research opportunities that will inform evidence-based management of these species. We conclude that integrating species-specific ecophysiological knowledge into the ornamental aquarium trade offers a critical pathway towards improving evidence-based health management. By moving beyond disease-centric assessments and addressing fundamental ecophysiological knowledge gaps, we can improve health outcomes and enhance the sustainability and economic viability of this vast global industry. These findings are intended to be of value to researchers across ecophysiology, conservation biology and aquatic animal health, as well as to industry stakeholders responsible for husbandry and transport protocols.</p>","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag046"},"PeriodicalIF":2.5,"publicationDate":"2026-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13360293/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148438908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Text recycling: defining the boundaries of acceptable reuse of one's own work.","authors":"Bridget O'Boyle, Essie Rodgers, Katharina Ruthsatz, Andrea Fuller","doi":"10.1093/conphys/coag047","DOIUrl":"10.1093/conphys/coag047","url":null,"abstract":"","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag047"},"PeriodicalIF":2.5,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13354318/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148426454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The relevance and application of measures of thermal tolerance to fish ecology, conservation and aquaculture.","authors":"Anthony K Gamperl, E Don Stevens","doi":"10.1093/conphys/coag044","DOIUrl":"10.1093/conphys/coag044","url":null,"abstract":"<p><p>Over the past 20 years, the fish research community has invested considerable effort into measuring the thermal tolerance limits of many freshwater and marine species. We have learned a lot regarding mechanisms that determine tolerance limits, and how climate-related warming of aquatic environments may affect fish biology, ecology and distribution. However, in our opinion, some research has used methods that are likely to provide inaccurate estimates of thermal tolerance with respect to wild and cultured fish populations. Given the rate of global warming, the increase in the frequency and severity of heat waves, and that these challenges are often combined with other climate change-related stressors (e.g. hypoxia, increased pathogen prevalence), we need to ensure that future efforts are more effectual for species' conservation and management. Herein, we provide a comprehensive and critical review of the methods currently used to measure the sub-lethal and lethal thermal limits of fishes, and discuss the relevance of these methods to fishes in the wild or in culture. In part, our aim is to educate fisheries managers and conservationists about what information is relevant to efforts to preserve species and biodiversity in the face of climate change. Finally, we provide explicit recommendations for researchers designing future thermal tolerance experiments.</p>","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag044"},"PeriodicalIF":2.5,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13339953/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148406926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energetic benefits of resting behaviour in humpback whale mother-calf pairs revealed by biologging and UAS-photogrammetry.","authors":"Augusta Hollers, William T Gough, Martin van Aswegen, Andrew Szabo, Lewis Evans, Jens J Currie, Ashley M Blawas, Andreas Fahlman, Jeremy A Goldbogen, Lars Bejder","doi":"10.1093/conphys/coag041","DOIUrl":"10.1093/conphys/coag041","url":null,"abstract":"<p><p>Quantifying energy expenditure of cetacean mother-calf pairs is essential for modelling population-level responses to environmental change and anthropogenic disturbance, especially for capital breeders where mothers face the compounding demands of fasting while lactating. Technological advances in biologging and unoccupied aerial system (UAS; drone) photogrammetry help overcome challenges in translating respirometry methods from animals under human care to the field, creating better energy-use estimates in large cetaceans. We quantified energy expenditure of humpback whale (<i>Megaptera novaeangliae</i>) mothers and calves on their winter breeding ground in Hawai'i using 51 biologging suction-cup tag deployments paired with simultaneous UAS-photogrammetric measurements (<i>n</i> = 20 mothers, <i>n</i> = 31 calves) from 2020 to 2025. We used two independent methods, Thrust Power and Breathing Frequency, to calculate per-second energy expenditure, divided deployments into resting dives and other behavioural states and modelled state-specific energy use and daily energy expenditure for mothers and calves. Calves spent more time in resting dives as they aged, and energy expenditure was on average 44% and 35% lower during resting dives for mothers and calves, respectively, compared to other behaviour. Simulated daily energy expenditure for calves ranged from 92 MJ for the smallest and youngest (3.5 m, 1 day) to 452 MJ for the largest and oldest (7.7 m, 110 days), and for mothers from 817 MJ for small females (10 m, 15 000 kg) to 2013 MJ for large females (14 m, 50 000 kg). To illustrate the conservation implications of these energy savings, we simulated the energetic cost of vessel-disturbance-induced reductions in resting behaviour for a representative mother-calf pair. Under a realistic daytime disturbance scenario, daily pair energy expenditure increased by 64 MJ day^-1, accumulating to an additional 150 kg of maternal blubber catabolized over 60 days of disturbance. Our findings provide best estimates of humpback whale mother-calf daily and behavioural state-specific energy expenditure, enabling improved quantification of the energetic consequences of disturbance.</p>","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag041"},"PeriodicalIF":2.5,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13339960/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148406909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of ecologically relevant acclimation temperature on upper thermal limits of juvenile Chinook salmon (<i>Oncorhynchus tshawytscha</i>).","authors":"Natalie A Butler, Scott G Hinch, Andrew Lotto, Emma L Lunzmann-Cooke, Kim Birnie-Gauvin, Erika J Eliason","doi":"10.1093/conphys/coag043","DOIUrl":"10.1093/conphys/coag043","url":null,"abstract":"<p><p>Pacific salmon currently experience temperatures in freshwater that can reach or exceed their upper thermal limits, but little is known about these limits for early life stages. As such, this study aimed to (i) evaluate the role of thermal acclimation on the upper thermal tolerance of stream-type juvenile Chinook salmon (<i>Oncorhynchus tshawytscha</i>) fry and parr and (ii) determine how different methods for assessing thermal limits affect the measured outcome. Both parr and fry life stages were acclimated for 2 weeks at temperatures spanning present (15, 18 and 20°C) and expected future summer levels (24°C). Using fish from each acclimation temperature, we determined the critical thermal maximum at rest (CT _<b>max</b> ) and during swimming (CT _<b>swim;</b> temperature at which fish fatigue from swimming) for both life stages, and further assessed prolonged swim performance and post-swim mortality. CT _<b>swim</b> was a more sensitive indicator of upper thermal limits compared to CT _<b>max</b> , for both life stages. Fish acclimated to higher temperatures generally exhibited higher thermal tolerance though acclimation capacity was diminished between 20 and 24°C. There was high post-swim mortality for the 24°C acclimation groups in both parr and fry, indicating an upper thermal limit where recovery was impaired. Overall, fry had higher upper thermal tolerance (shown by CT _<b>swim</b> , prolonged swim completion and post-swim mortality rates) compared to parr, demonstrating that life stage thermal tolerance corresponded with seasonal temperature exposure differences. Warm water temperatures exceeding 20°C are now routinely occurring in the study population region and many salmonid habitats worldwide, so we expect increasing mortality rates of early life stages in coming years.</p>","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag043"},"PeriodicalIF":2.5,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13334106/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148438916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Same species, different risks: predation shapes hormonal profiles in a breeding sea duck, the common eider.","authors":"Bertille Mohring, Farshad S Vakili, Frédéric Angelier, Kim Jaatinen, Suvi Ruuskanen, Olivier Chastel, Charline Parenteau, Bin-Yan Hsu, Titiksha Peetumber, Céline Arzel, Markus Öst","doi":"10.1093/conphys/coag036","DOIUrl":"10.1093/conphys/coag036","url":null,"abstract":"<p><p>Prey are predicted to respond to humans as they would to predators. Hence, human disturbance can elicit costly physiological and behavioural antipredator responses. However, human presence can also shelter prey from human-averse predators (the human 'scarecrow effect'). Whether this 'scarecrow effect' reduces perceived predation risk and promotes prey reproductive investment, as predicted by life-history theory, remains unclear. To test this, we monitored complementary hormonal markers in two geographically proximate colonies of common eiders <i>Somateria mollissima</i> breeding under contrasting conditions: one exposed to low human disturbance but high predation risk, and the other to high human disturbance (intense tourism) shielding birds from predators (i.e. low predation risk). We measured proxies of energy expenditure [baseline corticosterone (CORT)] and thyroid hormone levels [triiodothyronine (T3) and thyroxine (T4)], acute stress response (stress-induced CORT levels) and parental effort [baseline prolactin (PRL) levels]. Hormonal profiles differed markedly between colonies. Eiders in the low-disturbance/high-predation colony displayed higher baseline CORT and T3 levels than those in the high-disturbance/low-predation one, suggesting higher energy expenditure-possibly reflecting a higher energetic cost of incubating under elevated predation pressure. Stress-induced CORT levels were similar across colonies, suggesting that eiders maintain sensitivity to acute stressors despite a human 'scarecrow effect.' Supporting the hypothesis of increased parental effort under reduced perceived predation risk, incubating females displayed higher baseline PRL levels in the high-disturbance/low-predation colony. Altogether, these results are consistent with a human 'scarecrow effect' that reduces perceived predation risk without diminishing sensitivity to acute stressors, and that is associated with increased reproductive investment. Our research highlights the value of integrating multiple hormonal markers to understand wildlife responses to human disturbance and predation risk.</p>","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag036"},"PeriodicalIF":2.5,"publicationDate":"2026-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13293623/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148334381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two years at the editor's desk: reflections on community, diversity and impact.","authors":"Andrea Fuller","doi":"10.1093/conphys/coag040","DOIUrl":"10.1093/conphys/coag040","url":null,"abstract":"","PeriodicalId":54331,"journal":{"name":"Conservation Physiology","volume":"14 1","pages":"coag040"},"PeriodicalIF":2.5,"publicationDate":"2026-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13278847/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148297428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}