Invasive Amazon sailfin catfish (Pterygoplichthys pardalis) impacts the survivability and growth of native food fishes in India

Aquatic Living Resources, Journal Year: 2025, Volume and Issue: 38, P. 5 - 5

Published: Jan. 1, 2025

The prevalence of sailfin catfishes ( Pterygoplichthys spp.) in inland waters, including vast aquaculture systems India is rising. This might be a serious threat to the country’s native freshwater biological resources and production. Therefore, studies were carried out evaluate impact Amazon catfish pardalis on different life-stages fishes. First, we analyzed three size classes (small: 9.95 ± 0.70 cm, medium: 21.74 0.87 cm large: 30.81 1.59 total length) survival early (eggs, hatchlings, first-feeding fry, 10-day-old fry) two fishes; carp Labeo rohita (rohu) Ompok bimaculatus (butter catfish). All showed preference towards fish eggs over aquatic macro-invertebrates Tubifex worms) ingested 90% both species. However, their effects species’ mobile life stages (hatchlings forth) found insignificant terms mortality. We then assessed competition between advanced (fingerlings, fingerlings, sub-adult) fishes by evaluating growth experimental setups (indoor tanks with artificial feeds; outdoor natural food feed; earthen pond food) combinations for period six months. In indoor experiment, no discernible fingerlings species was found. But, rohu butter decreased 18.8–23.4% 28.9–36.7%, respectively, low- high-biomass treatments. sub-adult also reduced 29.7% 32.2%, respectively. at minimal. Overall findings this study indicate that may have an adverse effect either directly consuming or destroying competing them space.

Language: Английский

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Subtle ecological effects of the invasive signal crayfish (Pacifastacus leniusculus) on Iberian fish communities

Biological Invasions, Journal Year: 2025, Volume and Issue: 27(5)

Published: May 1, 2025

Language: Английский

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Protected from Pterygoplichthys? Predicting thermal habitat suitability for nonnative armored catfish in the Suwannee River

Transactions of the American Fisheries Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

ABSTRACT Objective Nonnative fishes can modify ecosystems and harm economies when they are introduced to new environments. Climate change is likely assist the spread establishment of some nonnative (e.g., warmwater species), but spatiotemporal gaps in water temperature monitoring modeling may prevent ecologists managers from forecasting thermal habitat suitability for these taxa. The purpose this study was develop a predictive model winter temperatures two priority armored catfish, Vermiculated Sailfin Catfish Pterygoplichthys disjunctivus Orinoco P. multiradiatus, Suwannee River, Florida Georgia. Methods Precipitation- groundwater-corrected air–water models were developed evaluated using selection procedure predict at four sites River. These chosen because blend simplicity with accuracy hydrometeorological create an efficient, economical, management-relevant approach analyzing temperature. Results Most top-performing (92%) had precipitation or groundwater corrections formulations. Projected mean maximum increased as simulated climate intensified. All River studied projected be thermally hospitable survival Catfish. Lower river sites, noticeably warmer than upper conducive throughout months. too cold climate-change scenarios, has abundance constant-temperature springs that year. Conclusions findings suggest will not barrier catfish amplifying importance conservation management approaches inhibit their establishment. If population remains small isolated decision makers able devote required staff time resources managing species, removal eradication local if broader scales reasonable goals. This provides aid prioritizing introduction, slow dispersal, eradicate, control other beyond.

Language: Английский

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Invasive Amazon sailfin catfish in Bangladesh: wild distribution, environmental and perceived socio-economic consequences

Aquatic Invasions, Journal Year: 2024, Volume and Issue: 19(1), P. 121 - 136

Published: Feb. 7, 2024

Amazon sailfin catfish are native to Latin Arica (Siluriformes: Loricariidae: Pterygoplichthys ) and popular around the world as ornamental fish. It is well-documented that these species highly successful invaders very prone forming new geographical ranges. However, once established, eradicating a population challenging task. In Bangladesh, of genus expected spread widely have severe detrimental impact on ecosystem health, biodiversity economics. Here we provide information future probable establishment non-native populations in wild using climate-matching analysis highlight their potential area occurrence. The socio-economic consequences also discussed, public perception economic damages caused. Control import similar species, culture intentional or unintentional release into open water urgently required.

Language: Английский

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Understanding feeding competition under laboratory conditions: Rohu (Labeo rohita) versus Amazon sailfin catfish (Pterygoplichthys spp.)

Behavioural Processes, Journal Year: 2024, Volume and Issue: 218, P. 105029 - 105029

Published: April 19, 2024

Language: Английский

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First record of the non-native vermiculated sailfin catfish Pterygoplichthys disjunctivus (Weber, 1991) from Lohandra River, Eastern Nepal

BioInvasions Records, Journal Year: 2024, Volume and Issue: 13(2), P. 557 - 564

Published: Jan. 1, 2024

The non-native vermiculated sailfin catfish Pterygoplichthys disjunctivus (Weber, 1991) is recorded for the first time in eastern Nepal's aquatic systems.Native to South America, reports of P. Asia were India, with subsequent from Bangladesh, Hongkong, Indonesia, Malaysia, Singapore, Thailand and Vietnam.Our findings mark known occurrence a species Nepal.The public, policy makers, researchers, merchants ornamental fish all need be informed critically about release into natural water systems light concerns.Non-native may negatively affect native populations if released waters.Therefore, it imperative that strict measures must taken prevent intentional or unintentional escape systems.

Language: Английский

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The Sailfin Catfish (Pterygoplichthys spp.) as a non-native aquarium pet: assessment of the potential distribution and public perception

Aquatic Ecology, Journal Year: 2023, Volume and Issue: 58(1), P. 89 - 105

Published: Sept. 5, 2023

Language: Английский

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Invasive Suckermouth catfishes (Siluriformes: Loricariidae) in Bangladesh wetlands: A review on the present status and challenges

Bangladesh Journal of Zoology, Journal Year: 2024, Volume and Issue: 51(3), P. 371 - 396

Published: April 1, 2024

The suckermouth catfish (SMF) is an invasive species in Bangladesh that has had a huge negative impact on ecosystems including rivers, lakes and wetlands. Several SMFs been introduced as aquarium fish the early 80‘s. first report of this was recorded 2008; more recently, it banned September 2022 due to its alarming adverse flora fauna inland waterbodies. This review explores complex ecological, economic, social dynamics triggered by several SMFs. information SMF‘s rapid proliferation, adaptability, destructive capacity waterbodies were underscored, well resulting challenges significant indigenous aquatic fauna, habitats, livelihoods wetland-dependent communities. However, eradication from would be major challenge. Moreover, cautious yet prospective plan for either exploitation or eradication, along with inflexible ecological safeguards, are recommended. Technological supports such environmental DNA (eDNA) techniques, together integration image processing, machine learning, robotics, may favorably used detecting presence Additionally, identifying habitat, distribution, hotspot should considered needful action. highlights multifaceted narrative SMF Bangladesh, emphasizing balance between conservation, economic gains, technological innovations. Therefore, illustrated could helpful enhance current knowledges which lead our nation towards resilience sustainable harmony against future invasions. suggests advanced action collaboration among different fisheries stakeholders, government authorities policy makers management J. Zool. 51(3): 371-396, 2023

Language: Английский

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Ecological impacts on the distribution of Ganges River dolphin (Platanista gangetica) in the lower Gangetic plains and its conservation challenges

Journal of Fisheries, Journal Year: 2024, Volume and Issue: 12(2), P. 122204 - 122204

Published: Aug. 7, 2024

Despite threatened status, the Ganges River dolphin (Platanista gangetica) received insufficient attention in many habitats including lower Ganges. In this study, through standardised monitoring programmes, we recorded population and distribution of species from a 100-km long stretch between January December 2023. Important ecological parameters (e.g. fish abundance water quality parameters) were also monitored to understand their effects on river. Number varied over time (ANOVA: F11,88 = 10.9, p < 0.001) space (F8,88 24.1, 0.001). Maximum number was sighted month August; whereas, minimum February. Population affected positively by (LMM: F 19.7, transparency (F 4.4, 0.042) negatively total dissolved solids (TDS; LMM: 13.5, A range challenges related fishermen’s knowledge attitude towards identified. These include lack awareness, high market demand price for negative species. Illegally harvested Vulnerable dolphins sold only produce oil catch another Endangered Clupisoma garua. The results study have conservation management applications implications.

Language: Английский

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Understanding feeding competition under laboratory conditions: Rohu (Labeo rohita)versus Amazon sailfin catfish (Pterygoplichthysspp.)

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

Published: Jan. 8, 2024

Abstract Competitive interactions between species is widely prevalent within the animal world. In this manuscript, we attempted to understand feeding competitions Amazon sailfin catfish, an invasive introduced globally, and rohu, a keystone native several countries southeast Asia. We used two different size classes of each species, large-size having total length (TL, from snout tip caudal fin) 15-20 cm fingerling TL <6 cm, duration was as proxy competition. Our results demonstrated that durations rohu were either similar or significantly (P<0.05) higher in presence catfish when compared trials conspecifics, indicating not weak competitor. However, reduced both conspecifics. Moreover, also displayed freeze (alarm) behavior catfish. Interestingly, had no significant (P>0.05) impact on Overall, study may behaviorally outcompete thus, threatening sustenance freshwaters around globe.

Language: Английский

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