Food Spectrum, Trophic and Length-Weight Characteristics of Nonindigenous Suckermouth Armored Catfishes Pterygoplichthys spp. (Loricariidae) in Vietnam

Столбунов, И. А.; Гусаков, В. А.; Dien, Tran Đuc; Thanh, Nguyễn Thị

doi:10.1134/s1995082921050163

Cited by 6 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fishers reported armored catfish feeding on fish larvae, and they suggest this is one of the causes of the decrease in native fishes. Nonetheless, fish and invertebrates larvae ingestion only have been reported incidentally, because they are grazers that mainly feed on detritus and periphyton (Özdilek 2007, Mendoza et al 2009, German & Miles 2010, Hoover et al 2014, Stolbunov et al 2021. Scott et al (2012) stated that the intensive grazing behavior of armored catfish can decrease food resources in the ecosystems.…”

Section: Discussionmentioning

confidence: 99%

Fishers’ perception on armored catfish (Pterygoplichthys spp.) invasion: ecologic and socioeconomic impacts in an estuarine protected area in Guatemala.

2023

IECA

View full text Add to dashboard Cite

Armored catfishes from the genus Pterygoplichthys spp. (family Loricariidae) have established populations in tropical and sub-tropical regions worldwide. The negative impacts caused by these catfishes have been studied in various ecosystems, especially in Mexico and the United States. Nevertheless, the impacts of invaded aquatic ecosystems and fisheries on the Pacific Coast of Guatemala remain undocumented. This study brings novel evidence about the impacts of this invasive species using local fishers' perceptions in an estuarine ecosystem on the pacific coast of Mesoamerica. During the rainy season of 2021 at Monterrico Multiple Use Natural Reserve, we conducted participatory activities with fishers. The study found that fishers perceived economic, social, and ecological impacts, including damage to fishing gears, ghost fishing, and habitat modification due to armored catfish nesting, among others. Fishers' perceptions indicate that controlling the invasive species is necessary to reduce the damage to local fisheries and fishers' livelihoods.

show abstract

Section: Discussionmentioning

confidence: 99%

Fishers’ perception on armored catfish (Pterygoplichthys spp.) invasion: ecologic and socioeconomic impacts in an estuarine protected area in Guatemala.

2023

IECA

View full text Add to dashboard Cite

show abstract

“…Generally, the smaller egg size in reservoirs may result from unfavorable environmental conditions such as high water temperature variation, greater water level changes, food shortages accompanied by a long dry season, as well as dissolved oxygen and other parameters that also were different in the two water bodies. Indeed, the size of fish from Dinh River was larger than in Suoi Trau Reservoir (Table 3), and fish obtained from Dinh River had a higher abundance of food in the digestive tract (benthic, planktonic, amphibious and terrestrial food items) than those from Suoi Trau Reservoir (only benthic and planktonic) [11]. This leads to the larger diameter of the top size class of eggs in Dinh River compared to those in Suoi Trau Reservoir.…”

Section: Discussionmentioning

confidence: 98%

“…have long digestive tracks (up to 6 m with L t = 310 mm, mean = 2.7 m with L t = 250 mm) [11], which are typical for phytophagous and detritophagous fish [12,13], a broad food spectrum, a fast growth rate and high tolerance to environmental conditions. They outcompete native species for food and habitats [11,[14][15][16], and they change the composition, structure, reproduction and function of local freshwater communities [15,[17][18][19][20]. Pterygoplichthys are a severe threat to freshwater fisheries in Eurasia, the United States of America [21,22] and Mexico [14,23].…”

Section: Introductionmentioning

confidence: 99%

“…Currently, Pterygoplichthys are present in all the main river basins and reservoirs in southern Vietnam [15,17,19,20]. Given that these species are thriving in freshwater habitats in Vietnam, it is supposed that they have undergone locally divergent adaptations by changes in morphology, diet, growth, development and reproduction, the key characteristics for successful invasions [11,20]. A few studies have documented some useful but very limited information on the reproduction of this species in Vietnam.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phenotypic Divergences in Growth and Reproduction Underpin the Invasion of Suckermouth Armored Catfish Pterygoplichthys disjunctivus (Loricariidae) into Lotic and Lentic Habitats in Vietnam

Dien,

Ha,

Dang

et al. 2023

Water

Self Cite

View full text Add to dashboard Cite

Suckermouth armored catfish (Pterygoplichthys disjunctivus) is one of the most widespread invasive species in Vietnam. However, it is relatively unknown how the species underwent its divergent adaptations to varying local conditions and habitat types, an understanding of which is essential for managing its invasion in Vietnam. We addressed this by analyzing a large number of fish (662 samples) collected in lotic (Dinh River) and lentic (Suoi Trau Reservoir) habitats in southern Vietnam during one year. The allometric growth patterns estimated by von Bertalanffy growth functions were Lt=4831−e−0.71(t−0.40) in Dinh River and Lt=3461−e−1.01(t−0.62) in Suoi Trau Reservoir. The estimated fish ages were 2.9 to 4.2 years old with an average total length from 206.10 ± 2.09 mm in Suoi Trau Reservoir to 319.22 ± 3.29 mm in Dinh River. The percentage of fish with matured ovaries peaked in August (100%) and was lowest in February (<10%), indicating that these fish breed nearly all year round. The main reproductive season is April–October, with a peak in July–August, as indicated by the gonado-somatic index and monthly changes in the percentage of matured fish. The lengths at 50% maturity were 234.3 and 179.7 mm for females from lotic and lentic habitats, respectively. Lotic fish had a fecundity (4812 ± 383 oocytes/ind.) which was five times greater than that of lentic fish (841 ± 91 oocytes/ind.); however, the relative fecundity of the fish was not statistically different between the two habitats (≈13 oocytes/g). This result was consistent with the larger oocytes: 2.95 ± 0.04 and 2.58 ± 0.01 mm for fish from Dinh River and Suoi Trau Reservoir, respectively. The faster growth and bigger fish with higher fecundity in the lotic habitats suggest that their population growth can accelerate more quickly, potentially affecting local communities more than those in lentic habitats. Our study sheds light on substantial phenotypic divergences in the reproduction and growth of the suckermouth armored catfish between lotic and limnetic habitats in Vietnam.

show abstract

“…Generally, the smaller eggs size in reservoirs may result from unfavourable environmental conditions such as high water temperature variations, higher water level changes and uctuations, food shortages accompanied by a long dry season. Indeed, the size of sh from Dinh River were larger than in Suoi Trau Reservoir (Table3) and sh obtained from Dinh River had a higher abundance of food in the digestive tract (benthic, planktonic, amphibiontic, terrestrial food items) than in Suoi Trau Reservoir (only benthic, planktonic)(Stolbunov and Gusakov et al 2021). This leads to the larger diameter of the top size class eggs in Dinh River than in Suoi Trau Reservoir.…”

mentioning

confidence: 94%

Phenotypic Divergences in Growth and Reproduction Underpin The Invasion of Suckermouth-Amored Catfishes to Lotic and Limnic Habitats in Vietnam

Dien

Dang

et al. 2022

Preprint

View full text Add to dashboard Cite

Suckermouth-amored catfishes (Pterygoplichthys spp.) is one of the most widespread invasive species in Vietnam. However, it is relatively unknown how these species have evolved in divergent adaptations to local conditions varying in habitat types, which is essential for managing their invasion in Vietnam. We addressed this by analyzing a large number of fish (766 phenotypes) collected in lotic (Dinh River) and limnic (Suoi Trau Resevoir) habitats in southern Vietnam during one year. Allometric growth patterns estimated by von Bertalanffy growth functions were \({L}_{t}= 500\left(1-{e}^{-0.71(t-0.44)}\right)\) in Dinh River and \({L}_{t}= 346\left(1-{e}^{-1.01(t-0.62)}\right)\) in Suoi Trau Resevoir. Estimated fish age was 2.9 to 4.2 years old. The percentage of fish with matured ovaries peaked in August (100%) and was lowest in February (< 10%), indicating that these fish breed all year round. The main reproductive season is April-October, with a peak in July-August as indicated by gonado-somatic indices index and monthly changes in the percentage of matured fish. The length at 50% maturity 22.93 and 17.51 cm for females from lotic and limnic habitats, respectively. Lotic fish had the fecundity (5830 ± 546 oocytes/ind.) which was five times larger than that of limnic fish (1042 ± 107 oocytes/ind.). This result was consistent with the larger oocytes of females: 2.94 ± 0.03 and 2.58 ± 0.01 mm for fish from Dinh River and Suoi Trau Resevoir, respectively. The faster growth and bigger fish with higher fecundity in the lotic habitats suggest they can accelerate greater population growth, potentially affecting local communities more than those from limnic habitats. Our study sheds light on substantial phenotypic divergences in reproduction and growth of the armored catfish between lotic and limnetic habitats in Vietnam, which is fundament for arriving at an effective management plan.

show abstract

Food Spectrum, Trophic and Length-Weight Characteristics of Nonindigenous Suckermouth Armored Catfishes Pterygoplichthys spp. (Loricariidae) in Vietnam

Cited by 6 publications

References 24 publications

Fishers’ perception on armored catfish (Pterygoplichthys spp.) invasion: ecologic and socioeconomic impacts in an estuarine protected area in Guatemala.

Fishers’ perception on armored catfish (Pterygoplichthys spp.) invasion: ecologic and socioeconomic impacts in an estuarine protected area in Guatemala.

Phenotypic Divergences in Growth and Reproduction Underpin the Invasion of Suckermouth Armored Catfish Pterygoplichthys disjunctivus (Loricariidae) into Lotic and Lentic Habitats in Vietnam

Phenotypic Divergences in Growth and Reproduction Underpin The Invasion of Suckermouth-Amored Catfishes to Lotic and Limnic Habitats in Vietnam

Contact Info

Product

Resources

About