Meng Xu

Meng Xu
Chinese Academy of Fishery Sciences | CAFS · Pearl River Fisheries Research Institute

PhD

About

52
Publications
11,096
Reads
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759
Citations
Citations since 2017
28 Research Items
712 Citations
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
Introduction
Skills and Expertise
Additional affiliations
July 2012 - August 2022
Chinese Academy of Fishery Sciences
Position
  • Professor (Associate)
Education
September 2009 - July 2012
Sun Yat-Sen University
Field of study
  • Ecology

Publications

Publications (52)
Article
Full-text available
Understanding determinants of the invasiveness and ecological impacts of alien species is amongst the most sought-after and urgent research questions in ecology. Several studies have shown the value of comparing the functional responses (FRs) of alien and native predators towards native prey, however, the technique is under-explored with herbivorou...
Article
Full-text available
Adult sex ratio (ASR) has critical effects on behavior and life history and has implications for population demography, including the invasiveness of intro- duced species. ASR exhibits immense variation in nature, yet the scale depen- dence of this variation is rarely analyzed. In this study, using the generalized multilevel models, we investigated...
Article
Full-text available
Quantifying the per capita effects of invasive alien species is crucial for assessing their ecological impact. A major challenge to risk assessment of invasive species was to understand the factors that cause per capita effects to vary in different ecological contexts, particularly in a warming world. By conducting functional response experiments,...
Article
Full-text available
Since Darwin’s time, degree of ecological similarity between exotic and native species has been assumed to affect the establishment success or failure of exotic species. However, a direct test of the effect of exotic‐native similarity on establishment of exotics is scarce because of the difficulty in recognizing failures of species to establish in...
Article
Full-text available
Aim: The enemy release hypothesis (ERH) posits that exotic species suffer less enemy damage than natives, which promotes their successful invasion. However, the gen- erality of less damage for exotics remains widely debated. A recent view proposes that enemy release (ER) could change systematically with latitude, potentially helping to explain thes...
Preprint
Silver arowana, Osteoglossum bicirrhosum, is sexually monomorphic, and its sex determination mechanism is poorly understood, which has been a major hurdle in its captive breeding. To this end, we assembled two high-quality chromosome-level genomes for each sex of silver arowana, with chromosome N50 of 10.6 Mb and 10.4 Mb in female and male, respect...
Article
Full-text available
Understanding the evolutionary history of the highly diverse ray-finned fishes has been challenging, and the development of more universal primers for phylogenetic analyses may help overcoming these challenges. We developed FishPIE, a nested PCR primer set of 82 phylogenetically informative exon markers and tested it on 203 species from 31 orders o...
Article
Human-induced fish introduction in aquaculture always be considered the most important driver of biological invasions in freshwater ecosystems, yet most introduced species fail to establish though having great economic benefits. Explaining the varying success of introduced fish species is a central question both in invasion biology and aquaculture...
Article
Full-text available
Non-native fish invasions are among the greatest threats to the sustainability of freshwater ecosystems worldwide. Tilapia and catfish are regularly cultured in South China which is similar to their climate in native areas and may also support their invasive potential. We systematically collected fish from eight main rivers of South China, from 201...
Article
Alien fishes are regarded as one of the major causes of the decline of aquatic fauna and biodiversity. Up to now, more than 500 fish species have been introduced into China from other countries. However, nationwide documentation of the established alien fishes is still lacking, and their ecological risk is unclear. We compiled a comprehensive inven...
Article
In the last few decades, non-native freshwater fishes have been introduced all over the world for economic purposes, including aquaculture and aquarium trade, as well as improvement for wild stocks resulting in adverse environmental and socio-economic effects. The Guangdong province of China is at a high risk of fish invasions owing to its warm and...
Article
Full-text available
Evolutionary experience and the phylogenetic relationships of plants have both been proposed to influence herbivore–plant interactions and plant invasion success. However, the direction and magnitude of these effects, and how such patterns are altered with increasing temperature, are rarely studied. Through laboratory functional response experiment...
Article
Tilapia is one of the groups of fish species most widely cultured globally. China has been the largest producer of tilapia in the world since 1990s. Guangdong Province produces almost 40% of all tilapia in China because of its suitable geography and weather conditions, and tilapia culture has brought considerable economic benefits. Unfortunately, m...
Article
Full-text available
Invasive species are a major and growing threat to China’s native freshwater biodiversity. They have caused species extinctions, biodiversity loss, and environmental changes. Mrigal carp (Cirrhinus mrigala), one of the most widespread and invasive of freshwater fish species, now occurs in major rivers throughout southern China. We report the curren...
Article
Full-text available
Invasive alien species (IAS) cause myriad negative impacts, such as ecosystem disruption, human, animal and plant health issues, economic damage and species extinctions. There are many sources of emerging and future IAS, such as the poorly regulated international pet trade. However, we lack methodologies to predict the likely ecological impacts and...
Article
Invasive alien species (IAS) cause myriad negative impacts, such as ecosystem disruption, human, animal and plant health issues, economic damage and species extinctions. There are many sources of emerging and future IAS, such as the poorly regulated international pet trade. However, we lack methodologies to predict the likely ecological impacts and...
Article
Full-text available
Nutrient enrichment caused by anthropogenic activities can positively affect biological invasions as novel species can utilize additional resources in the ecosystem for population persistence. Although the effect of resource availability on plant invasions has been well-documented, the impact of nutrient enrichment on fish invasions remains unexplo...
Article
Full-text available
Competitive interactions not only exist between invasive and native fish species but also between different invasive species, especially between those that have broad niche overlap. Nile tilapia (Oreochromis niloticus) and Redbelly tilapia (Tilapia zillii) are the most common invasive tilapia species in the rivers of South China. There may be speci...
Article
Nile tilapia (Oreochromis niloticus) can cause a series of economic problems in aquaculture ponds due to its competition with other species and negative impacts on their growth and breeding. To test the killing effect of “Miefeiling” on O. and to provide scientffic guide for its application, we conducted an experiment by applying 0.16 mg • L⁻¹ “Mie...
Article
Full-text available
Although a large number of fish species have been introduced into Guangdong Province in Southern China, a few species, such as tilapia (Tilapia spp.), North African catfish Clarias gariepinus Burchell, mrigal carp, Cirrhinus mrigala (Bloch) and the sucker mouth catfish (Hypostomus sp.), have established natural populations and can be considered “su...
Article
Full-text available
1. Predictions of the identities and ecological impacts of invasive alien species are critical for risk assessment, but presently we lack universal and standardized metrics that reliably predict the likelihood and degree of impact of such invaders (i.e. measureable changes in populations of affected species). This need is especially pressing for em...
Article
1. Predictions of the identities and ecological impacts of invasive alien species are critical for risk assessment, but presently we lack universal and standardized metrics that reliably predict the likelihood and degree of impact of such invaders (i.e. measurable changes in populations of affected species). This need is especially pressing for eme...
Article
Full-text available
We contend that invasion ecology requires a universal, measurable trait of species and their interactions with resources that predicts key elements of invasibility and ecological impact; here, we advocate that functional responses can help achieve this across taxonomic and trophic groups, among habitats and contexts, and can hence help unify dispar...
Article
Full-text available
Vonesh et al. (2017) in their critique of Dick et al. (2017) erect a straw man with their thought experiment; they look for reasons why comparative functional response (CFR) might fail, when CFR clearly and repeatedly succeeds.
Chapter
Fast expansion of aquaculture in China largely relies on the introduction and use of non-native species. However, the introduction and use of non-native species may have negative impacts on local ecosystems and societies. Clarias gariepinus has been widely farmed in China after introduced in 1980 from Africa. However, during aquaculture, this fish...
Chapter
Nile tilapia Oreochromis niloticus (L.) is one of the most widely cultured and most widespread invasive fish species globally. It was the most common alien fish species in South China where it has successfully established populations in the major rivers, and became the dominant species in many sites. The distribution of Nile tilapia in the wild in...
Article
Full-text available
In China, the introduction of South American sailfin catfishes of the genus Pterygoplichthys are a concern due to the potential risks they pose to native environments. The present study reports on the distribution, establishment and maturity of a Pterygoplichthys spp. hybrid swarm in Guangdong Province, China. Distribution data demonstrate that Pte...
Article
We collected the egg spots of golden apple snails (Pomacea cancliculata) across 11 latitudes (18°N to 28°N) during June to October 2015, which covered the major colonized areas from north to south boundaries in China. We measured the length, width, height, weight, volume of egg spots, and the diameter and number of eggs across latitudes, and analyz...
Article
Using water lettuce (Pistia stratiotes), water hyacinth (Eichhornia crassipes) and southern naiad (Najas guadelupensis) as apple snails’ (Pomacea canaliculata) food, we determined the temperature, pH, dissolved oxygen and the concentrations of ammonium nitrogen, nitrite nitrogen, nitrate nitrogen, and soluble phosphate of aquaculture liquid at 1, 3...
Article
To determine the age structure and growth characteristics of Clarias gariepinus, sagitta ray sections, body length and weight were examined using 223 specimens collected in South China during August 2011 and June 2015. These specimens were comprised of 3 age groups ranging from age 1 to age 3. Additionally, the dominated age was age 1, accounting f...
Article
Tilapias are now the most common alien fish in the rivers of South China and the dominant species in many sites. However, wild tilapia species have not been well-characterized or studied systematically. In this study, mitochondrial DNA control regions (mtDNA CR) and morphological characteristics were used to identify invasive tilapia species. Using...
Article
Full-text available
The high-risk invasive apple snail Pomacea canaliculata has greatly threatened the agriculture, ecosystem integrity and public health. In order to provide scientific evidence for effective prevention and control of P. canaliculata, a most suitable ecological niche model was selected to predict the potential suitable distribution areas of P. canalic...
Article
A comparative study on measurable characters, age structure, sex ratio and density dependence of Pomacea canaliculata populations from 4 habitats in 11 areas of Guangdong Province were conducted. The results showed that measurable characters of P. canaliculata significantly differed among habitats (P <0.05). The relationship between body mass and s...
Article
A total of 255 fish specimens of invasive species Clarias gariepinus were collected from the main rivers of south China, to analyze its reproductive characteristics. The results showed that females spawned from May to August, and the spawning peak occurred in June and July. The dis- tribution of egg-diameter presented a multi?peak pattern. Fat coef...
Article
Full-text available
Pomacea canaliculata is an important invasive species worldwide. However, little is known about the molecular mechanisms behind species displacement, adaptational abilities, and pesticide resistance, partly because of the lack of genomic information that is available for this species. Here, the transcriptome sequences for the invasive golden apple...
Article
Full-text available
Conspecific negative density dependence (CNDD) is often involved in explaining the maintenance of species diversity in forest communities given that it may suppress the common species. Recent studies, in contrast, suggested that CNDD had a stronger effect on rare species than on common species and thus shaped the current tree abundance pattern. How...
Article
Full-text available
Snails are a kind of important aquatic products and dehydration is the main technique in production of snail meal. Apple snail (Pomacea canaliculata) dehydration meets both the demand for a fishmeal substitute in aquaculture and invasive species control in agriculture. In this study, we investigated the percentage of the nutritive material, examine...
Chapter
Globally, biological invasion is a threat to economy, biodiversity, and human health. Most of the alien species were mediated by human activity, which is true for aquatic invasion species as well. China has become the world's second largest economic entity and the world's first aquaculture and fisheries trade powers. A total of 544 alien invasive s...
Article
•Species prevalence of Pomacea spp. from 19 regions in South China was identified.•Low genetic variation was not related to geographic distribution patterns of Pomacea canaliculata.•Two haplotypes as the ancestral continental haplotypes of P. canaliculata were found.•Phylogenetic analysis indicated the success invasion of P. canaliculata through se...
Article
Full-text available
The Janzen-Connell hypothesis suggests that density- and/or distance-dependent juvenile mortality driven by host-specific natural enemies can explain high species diversity in tropical forests. However, such density and distance effects may not occur simultaneously and may not be driven by the same mechanism. Also, reports of attempts to identify a...
Article
Full-text available
Density-dependent mortality has been recognized as an important mechanism that underpins tree species diversity, especially in tropical forests. However, few studies have attempted to explore how density dependence varies with spatial scale and even fewer have attempted to identify why there is scale-dependent differentiation. In this study, we exp...
Article
Full-text available
Nile tilapia (Oreochromis niloticus) is one of the most widely cultured species globally and has successfully colonized much of the world. Despite numerous studies of this exotic species, how differences in native communities mitigate the consequences of Nile tilapia invasion is unknown. Theory predicts that communities that are more diverse should...
Article
Full-text available
Heat-shock protein 70 (HSP70) is one of the most important heat-shock proteins that helps organisms to modulate stress response via over-expression. The HSP70 gene from Pomacea canaliculata was cloned using the RACE approach; the gene is 2,767 bp in length and contains an open reading frame of 1,932 bp, which is encoded by a polypeptide of 643 amin...
Article
The genetic structure of the family Osteoglossidae from different geographical regions was examined using the nuclear 18S ribosomal RNA (18S rDNA) sequence. The results showed that the partial length of 18S rDNA was 1277 bp, and they were relatively conserved in the species of the family Osteoglossidae. A total of 62(4.83%) polymorphic sites were o...
Article
The present study examined the genetic variation of the family Osteoglossidae from different geographical locations based on the mitochondrial NADH dehydrogenase subunit 2 (ND2) and ATPase subunit 6 (ATPase6) genes; we then re-constructed the phylogenetic relationships using the two sequences in combination. The results showed that the partial sequ...
Conference Paper
Background/Question/Methods It is believed that soil pathogens play an important role on maintenance of plant community diversity and species abundance. However, most studies inferred community-level species coexistence from a single or a few species and direct evidence that soil pathogens influence species diversity were lacking. On the other ha...

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Project (1)
Project
1) Using an invasive fish Pterygoplichthys spp, which is an invasive detritivorous fish with high body phosphorus content, as model organism to explore whether ecological stoichiometry could explain the mechanism of fish invasion; 2) To explore the geographical pattern and underlying mechanism regarding to variation of life-history traits of Pterygoplichthys spp.