Are fish immunocompetent enough to face climate change?

Biology Letters, Journal Year: 2024, Volume and Issue: 20(2)

Published: Feb. 1, 2024

Ongoing climate change has already been associated with increased disease outbreaks in wild and farmed fish. Here, we evaluate the current knowledge of change-related ecoimmunology teleosts a focus on temperature, hypoxia, salinity acidification before exploring interactive effects multiple stressors. Our literature review reveals that acute chronic changes temperature dissolved oxygen can compromise fish immunity which lead to susceptibility. Moreover, hypoxia have shown enhance infectivity certain pathogens/parasites accelerate progression. Too few studies exist focussed acidification, but direct immune seem be limited while led contrasting results. Likewise, multi-stressor experiments essential for unravelling interactions simultaneously changing environmental factors are still scarce. This ultimately impedes our ability estimate what extent will hamper immunity. about epigenetic regulation mechanisms highlights acclimation potential response environments. However, due number studies, overarching conclusions cannot drawn. Finally, provide an outlook how better realistic scenarios future

Language: Английский

---

The Convergence of Antibiotic Contamination, Resistance, and Climate Dynamics in Freshwater Ecosystems

Water, Journal Year: 2024, Volume and Issue: 16(18), P. 2606 - 2606

Published: Sept. 14, 2024

The convergence of antibiotic contamination, antimicrobial resistance (AMR), and climate dynamics poses a critical environmental public health challenge. Freshwater ecosystems are increasingly threatened by the persistent presence antibiotics, which, coupled with rising global temperatures, accelerate development spread AMR. This review examines sources, pathways, mechanisms through which antibiotics enter freshwater systems how change exacerbates these processes. discusses this convergence’s ecological human impacts, highlighting implications for biodiversity health. It also explored current monitoring mitigation strategies, including advanced oxidation processes, natural-based solutions, policy interventions. Finally, identifies research gaps proposes future directions managing intertwined threats resistance, change. emphasizes need integrated, multidisciplinary approaches to protect resources in an volatile environment.

Language: Английский

---

Integrating Historical biogeography and Pliocene climate fluctuation to Unraveling the evolution of Tigris-Euphrates drainage basin through widespread freshwater Barbinae (Cypriniformes: Cyprinidae)

Inland Waters, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 29

Published: Jan. 30, 2025

Language: Английский

---

Ecological generalism and physiology mediate fish biogeographic ranges under ocean warming

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2015)

Published: Jan. 31, 2024

Climate-driven species redistributions are facilitated by niche modifications that increase a species's chances of establishment in novel communities. It is well understood how range-extending adjust individual traits when entering environments, yet whether modification ecological collectively alters the pace range extensions or contractions remains unknown. We quantified habitat niche, abundance, physiological performance and cellular defence/damage coral reef fishes coexisting local temperate along 2000 km latitudinal gradient. also assessed their dietary behavioural niches, potential, to understand generalism facilitates successful extension fishes. The fish increased all showed stronger establishment, damage, but decreased defence at cold-range edge, whereas tropical unmodified niches lower establishment. One width body condition, defence, damage energy reserves warm-trailing range, while other contrasting responses. Therefore, generalists might be more than specialists during initial stages climate change, with increasing future warming strengthening this pattern physiologically benefitting disadvantaging specialists.

Language: Английский

---

ADL-Net: attention-driven densenet-LSTM network for underwater images classification

Engineering Research Express, Journal Year: 2025, Volume and Issue: 7(1), P. 015218 - 015218

Published: Jan. 7, 2025

Abstract Imaging in marine environment is a challenging task due to several reasons, including light variations, color distortions, noise, and limited datasets, which causes inaccurate target classification problems. This paper presents methodology for image biology environmental research. We proposed the Attention-Driven DenseNet-LSTM Network (ADL-Net), aiming improve accuracy of underwater imagery. Initially, feature extraction performed using multi-levels DenseNet201, excels hierarchical extraction, offering stability rapid convergence. In next stage, two modified attention mechanisms are designed: squeeze excitation operations used refine channel-specific responses, while convolutional block module refines both channels spatial dimensions. These help model highlight important features minimize distractions. Additionally, Bi-directional Long Short-Term Memory layer integrated capture dependencies robustness. Various training strategies find best parameter tuning. Our method demonstrates excellent performance when tested on fish datasets: LifeCLEF 2015 Fish4Knowledge, achieving accuracies 98.02%, 99.52%, respectively. findings underscore ADL-Net’s potential enhancing automated classification, advancing research ecology.

Language: Английский

---

Sediment Properties and Seagrass Density Influence the Morphological Plasticity of Seagrass Zostera muelleri More Than Elevated Temperatures

Estuaries and Coasts, Journal Year: 2025, Volume and Issue: 48(2)

Published: Jan. 22, 2025

Abstract Understanding the long-term effects of elevated temperatures on foundational species like seagrasses is critical for predicting and managing impacts warming coastal ecosystems worldwide. Seagrasses exhibit plasticity in response to a range environmental stressors, so climate change are likely be context dependent. This study investigated differences growth morphology Zostera muelleri inside versus outside warm water plume generated by power station operating ~ 26 years Lake Macquarie, New South Wales, Australia. The other factors, including sediment organic matter, season seagrass density were also examined ascertain their importance relative temperatures. Despite thermal being equivalent conditions predicted 2090 under future scenarios (1.5–2.7 °C above ambient), there no consistent these Z. morphology. Instead, at all sites (ambient water) was greater 40.3% spring 74.3% summer when compared winter. Increasing matter content sediments associated with 69.8% rise below-ground biomass subsequent 73.8% reduction ratio above- biomass. There evidence effects, denser meadows having shorter leaves reduced rates, due self-shading. Overall, findings demonstrate that centre its distribution eastern Australia can tolerate moderate temperature increases over decadal scales.

Language: Английский

---

How do extreme fluctuations in water level affect fish condition in Amazonian Floodplain Lakes?

Journal of Fish Biology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract The annual flood pulse is a defining feature of Amazonian floodplain lakes, creating highly variable environment that influences resource availability, such as food and habitat. These cyclical changes necessitate high degree adaptability among fish species, many which have evolved specialized strategies to cope with the fluctuating conditions. In 2023, Amazon basin experienced record‐breaking drought event, leading mass mortality other wildlife. This study examines effect this extreme event on condition in white‐water (Rio Solimões basin) black‐water Negro lakes. contrasting environments provide unique opportunity how different water qualities water‐level fluctuations impact condition. Research was conducted during normal low‐water period November 2019 drastically decreased levels 2023. main objective understand affect health nutritional status. A total 585 fishes were analyzed, 294 from 291 black‐water, representing feeding types comprehensive picture Water‐level had statistically significant both areas. Comparing levels, consistently higher period. linear mixed‐effects model revealed intensity season length‐adjusted mass, suggesting decrease level associated an overall mass. When comparing mean (Glass's Δ ) between we found bigger system than system. difference may be attributed lower nutrient content humic acids refractory dissolved organic matter can further limit primary productivity availability for fishes.

Language: Английский

---

Contrasting environmental and demographic influences on growth variability in two tropical snappers spanning the equator in the Indo-West Pacific

Reviews in Fish Biology and Fisheries, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

---

Relationship Between Marine Fish Production and Climatic and Oceanographic Factors: Evidence From the Bay of Bengal, Bangladesh

Aquaculture Fish and Fisheries, Journal Year: 2025, Volume and Issue: 5(2)

Published: March 6, 2025

ABSTRACT The fisheries sector is a cornerstone of Bangladesh's economy, contributing significantly to national gross domestic product (GDP) and export earnings. However, the production other marine fish falls short expectations due various reasons, such as overexploitation, destruction habitat, pollution, climate change increasing pressure poor fishers. This study examines relationships between production, climatic oceanographic variables along Cox's Bazar coast in Bay Bengal (BoB). Utilizing data collected from landing centre, satellite remote sensing data, evaluates relationship five different groups variables. Multiple linear regression (MLR) models were employed assess these flowing into key analytical steps. analysis revealed that certain variables, including monthly average precipitation (LnPrecep), relative humidity (LnRhdt), sea surface temperature (LnSST), chlorophyll‐A concentration (LnChl), salinity (LnSalinity) dissolved oxygen (LnDo), have combined explanatory power 30.7, 46.10, 40.4 24.0%, respectively, for observed variability fishes (hilsa, chanda, mackerel, rita mixed) at Bangladesh Fisheries Development Corporation (BFDC)'s centre Bazar. Additionally, factors explain 38.8% total kinds combined. All found be statistically significant ( p < 0.05). relatively low R 2 values indicate unaccounted factors, human pressure, particularly fishing exerted by fishers reduction production. These results highlight volume landings, or BoB, emphasizing need further research includes growing support sustainable management.

Language: Английский

---

Climate mediates the predictability of threats to marine biodiversity

Trends in Ecology & Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

---