Nonnative fish in the Pearl River Delta: A comprehensive study on their salinity adaptability and potential distribution area in brackish water DOI Creative Commons

Du Luo,

Dingtian Yang, Yuefei Li

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: April 16, 2024

Abstract The Pearl River Delta (PRD) has undergone significant environmental changes resulting from anthropogenic activities, with bio-invasion emerging as one of the most consequential byproducts. Despite these apparent transformations, our understanding nonnative fish species and their adaptability to environment remains incomplete, compounded by complexity river network. To address this, we conducted a literature survey screen species. Subsequently, analyzed fish's salinity adaptation capability, spatial variations in alpha diversity, trophic level. Thirdly, simulated distribution under conditions intrusion. Our findings identified 25 species, phylogenetically belonging nine orders, three being translocated within China remaining 22 exotic introductions. Although are freshwater exhibit species-specific differences tolerance, they generally can adapt brackish water, an average tolerance 23.74 ppt. diversity declined relative distance decreased upstream Estuary (PRE) its mouth sea (p < 0.01). Spatial analysis unveiled pronounced heterogeneity distribution, particularly east PRE LingDing Bay. Notably, intrusion circumstances, gap region between levels 5.0 ppt 15.0 ppt, spanning 3111.2 km2, emerged potential zone for fish. By emphasizing key factor, study may contribute elucidating invasion mechanisms enhancing assessment risks estuarine environments.

Language: Английский

eDNA Metabarcoding Reveals the Depth-Structured Variation of Coral Reef Fish DOI Creative Commons

Jinfa Zhao,

Lin Lin, Yong Liu

et al.

Fishes, Journal Year: 2025, Volume and Issue: 10(5), P. 209 - 209

Published: May 2, 2025

Global coral reef ecosystems face various levels of disturbance pressure. Understanding the depth-structured variation in fish communities can help us to better grasp and predict adaptive changes ecosystem under different stressors. This study applied eDNA metabarcoding technology analyze spatial distribution at depths (0 m, 5 10 15 20 30 40 50 60 m) within Xisha Islands China. The results indicated that detected a total 213 amplicon sequence variants (ASVs), including 33 species were not identified using traditional methods. Herbivorous generally dominated relative abundance across depths. Moreover, similarity among depth groups was largely absent, significant differences existed assemblages gradients, consistent with unique preferences microhabitats. Importantly, our findings revealed distinct functional fish. Large carnivorous initially increased then decreased along gradient from 0 turning point around while large herbivorous displayed opposite trend. Small small consistently declined same gradient. Additionally, Margalef index (D) Function richness (FRic) both downward trend increasing depth, Shannon–Wiener (H′), Pielou (J′), Quadratic entropy (RaoQ), Functional dispersion (FDis), evenness (FEve) decreased, peaking m. is an effective tool for evaluating biodiversity, community composition, distribution. It enhances understanding dynamics offers valuable insights conservation restoration efforts.

Language: Английский

Citations

0
Preferential consumption of benthic cyanobacterial mats by Caribbean parrotfishes DOI
Joshua C. Manning, Sophie J. McCoy

Coral Reefs, Journal Year: 2023, Volume and Issue: 42(5), P. 967 - 975

Published: July 16, 2023

Language: Английский

Citations

8
Seven decades of transformation: evaluating the dynamics of coral reef fish communities in the Xisha Islands, South China Sea DOI

Jinfa Zhao,

Teng Wang,

Chunhou Li

et al.

Reviews in Fish Biology and Fisheries, Journal Year: 2024, Volume and Issue: 34(4), P. 1261 - 1281

Published: July 11, 2024

Language: Английский

Citations

2
The outbreak of Drupella snails and its catastrophic effects on coral reefs: a comprehensive review DOI Creative Commons
Fang Zhang,

Xiwang Jia,

Zhenni Lin

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 10

Published: Jan. 4, 2024

The recurring outbreaks of Drupella snails are a significant threat to coral reef ecosystems on global scale. However, research is currently very fragmentary. This article explores the ecological impacts and mitigation methods its outbreaks, draws following main conclusions. 1) inhabit tropical oceans Indo-Pacific, utilizing their specialized radula feed polyps, they predominantly spawn during summer, attaching egg capsules onto skeletons. 2) An outbreak defined by density &gt; 2 ind/m , but large aggregations alone do not necessarily indicate an outbreak. 3) damage ecosystem primary cause snail with hypotheses “terrestrial nutrient input” “overfishing predator” being widely accepted fully explaining all events. 4) Countering involves improving health ecosystems, protected areas, biological control manual removal, though removal most direct effective in short-term. 5) understanding physiological characteristics inadequate at present, larval development population ecology areas particular under-investigation. 6) Studies have focused mainly mid-outbreak stages, little attention early warnings beforehand or adverse outcomes afterwards. Despite challenges, addressing knowledge gaps biology crucial determine true causes identify corresponding solutions.

Language: Английский

Citations

1
Nonnative Fish in the Pearl River Delta: A Comprehensive Study on Their Salinity Adaptability and Potential Distribution Area in Brackish Water DOI Creative Commons

Du Luo,

Dingtian Yang, Yuefei Li

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 17, 2024

Abstract After extensive aquaculture, urbanization, and industrial development, the Pearl River Delta (PRD) has undergone profound environmental changes, with biological invasion emerging as a consequential anthropogenic byproduct, carrying significant implications for natural ecosystems, human health, economy. Despite these transformations, our understanding of nonnative fish species their adaptability to dynamic conditions within intricate river network PRD remains incomplete. To address this, we conducted systematic survey in waters through literature reviews. Then analyzed salinity adaptation fish, coupled spatial examination distribution, comprehensively understand potential mechanisms exotic region. Our findings identified 25 waters, three being translocated China remaining 22 introductions. Phylogenetically, are broadly distributed among several orders, Cichliformes, Perciformes, Cypriniformes, Siluriformes predominant orders. most freshwater exhibiting species-specific differences adaptability, they generally demonstrated an average tolerance 23.74 ppt, allowing them adjust brackish water. The diversity declined relative distance decreased from upstream Estuary (PRE) its mouth sea (p < 0.01). Spatial analysis unveiled pronounced heterogeneity particularly east PRE LingDing Bay, featuring sizable area Notably, under intrusion circumstances, gap region between levels 5.0 ppt 15.0 spanning 3111.2 km2, emerged zone fish. By emphasizing key factor, study may contribute elucidating enhancing assessment risks estuarine environments.

Language: Английский

Citations

1
Variation in farming damselfish behaviour creates a competitive landscape of risk on coral reefs DOI Creative Commons
Catherine Sheppard, Lisa Boström‐Einarsson, Gareth J. Williams

et al.

Biology Letters, Journal Year: 2024, Volume and Issue: 20(5)

Published: May 1, 2024

Interspecific interactions are fundamental drivers of animal space use. Yet while non-consumptive effects predation risk on prey use well-known, the aggressive competitors is largely unknown. We apply landscape framework to competition-driven for first time, with hypothesis that less may alter their behaviour avoid areas high competitor density. Specifically, we test how from territorial algal-farming damselfishes can shape spatial distribution herbivore fish competitors. found only most damselfish had fewer in surrounding area, demonstrating individual-level behavioural variation distributions. In contradiction framework, abundances farming and other fishes were positively associated. Our results suggest reef do not simply abundance, but behaviour, rather than individuals, created a competitive risk. emphasize importance identifying patterns propose expanding non-predatory explore cascading responses

Language: Английский

Citations

1
Trait Networks: Assessing Marine Community Resilience and Extinction Recovery DOI Creative Commons
Charlotte G. Clay, Alexander M. Dunhill, James Davis Reimer

et al.

iScience, Journal Year: 2024, Volume and Issue: 27(10), P. 110962 - 110962

Published: Sept. 17, 2024

Language: Английский

Citations

1
Epilithic algal composition and the functioning of Anthropocene coral reefs DOI Creative Commons
Sterling B. Tebbett,

Michael J. Emslie,

Michelle J. Jonker

et al.

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 210, P. 117322 - 117322

Published: Nov. 26, 2024

Language: Английский

Citations

1
Environmental change and connectivity drive coral reef fish abundance in the Western Indian Ocean DOI Creative Commons
Laura M. Warmuth, Stephen Kelly, Melita Samoilys

et al.

ICES Journal of Marine Science, Journal Year: 2024, Volume and Issue: 81(9), P. 1785 - 1795

Published: Oct. 18, 2024

Abstract Worldwide, coral reefs are facing risk from climate change. The Western Indian Ocean (WIO) harbours about 16% of global with highly reef-dependent local communities. Coastal protection and food security depend on effective conservation management, which requires understanding species abundances. Here, we explore how fish group distribution abundance across the WIO, categorized by their trophic function, explained oceanographic connectivity, sea surface temperature (SST), chlorophyll a. We designed a proportional connectivity metric describing relative strength between all WIO each survey site. created statistical models for four groups: grazers detritivores, herbivorous excavators, corallivores, primary piscivores 51 sites in WIO. show that SST strong predictors groups improved model predictions significantly detritivores excavators. For peak abundances were predicted at medium low suggesting larvae dispersal predominates scale. Decision making should include efficient area prioritization, our is valid useful parameter.

Language: Английский

Citations

0
Nonnative fish in the Pearl River Delta: A comprehensive study on their salinity adaptability and potential distribution area in brackish water DOI Creative Commons

Du Luo,

Dingtian Yang, Yuefei Li

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: April 16, 2024

Abstract The Pearl River Delta (PRD) has undergone significant environmental changes resulting from anthropogenic activities, with bio-invasion emerging as one of the most consequential byproducts. Despite these apparent transformations, our understanding nonnative fish species and their adaptability to environment remains incomplete, compounded by complexity river network. To address this, we conducted a literature survey screen species. Subsequently, analyzed fish's salinity adaptation capability, spatial variations in alpha diversity, trophic level. Thirdly, simulated distribution under conditions intrusion. Our findings identified 25 species, phylogenetically belonging nine orders, three being translocated within China remaining 22 exotic introductions. Although are freshwater exhibit species-specific differences tolerance, they generally can adapt brackish water, an average tolerance 23.74 ppt. diversity declined relative distance decreased upstream Estuary (PRE) its mouth sea (p < 0.01). Spatial analysis unveiled pronounced heterogeneity distribution, particularly east PRE LingDing Bay. Notably, intrusion circumstances, gap region between levels 5.0 ppt 15.0 ppt, spanning 3111.2 km2, emerged potential zone for fish. By emphasizing key factor, study may contribute elucidating invasion mechanisms enhancing assessment risks estuarine environments.

Language: Английский

Citations

0