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25 results for “Pterygoplichthys”
Fig. 1 in Four Alien Monogeneans, Including Trinigyrus peregrinus n. sp., Parasitic on the Invasive Armored Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) from Okinawa-jima Island, Okinawa Prefecture, Japan
Fig. 1. Measurement axes of hard parts of Unilatus and Trinigyrus. Abbreviations: aol, anchor outer length; apl, accessory piece length; asl, accessory structure length; asw, accessory structure width; atl, anchor total length; bmw, bar median width; btl, bar total length; btw, bar total width; bw, base width; ccl, copulatory organ curve length; cd, copulatory organ diameter; cl, copulatory organ length; mhl, marginal hook length; pl, point length; scl, sclerotized cup length; vl, vagina length.
Fig. 3 in Four Alien Monogeneans, Including Trinigyrus peregrinus n. sp., Parasitic on the Invasive Armored Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) from Okinawa-jima Island, Okinawa Prefecture, Japan
Fig. 3. Unilatus brittani Mizelle, Kritsky, and Crane, 1968. NSMT-Pl 6193. A, anterior anchors; B, posterior anchors; C, anterior bar; D, posterior bar; E, marginal hook of pair I; F, marginal hook of pair II; G, marginal hook of pair III; H, marginal hook of pair IV; I, marginal hook of pair V; J, marginal hook of pair VI; K, marginal hook of pair VII; L, male copulatory organ; M, vagina. Scale bars: 10 µm.
Fig. 4. Trinigyrus peregrinus n in Four Alien Monogeneans, Including Trinigyrus peregrinus n. sp., Parasitic on the Invasive Armored Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) from Okinawa-jima Island, Okinawa Prefecture, Japan
Fig. 4. Trinigyrus peregrinus n. sp. Holotype (NSMT-Pl 6195) for B–E, paratypes for A (NSMT-Pl 6198, 6200) and for F (NMST-Pl 6202). A, whole mount (ventral view, composite); B, anchors; C, bar; D, marginal hook; E, male copulatory organ; F, egg. Scale bars: A and F, 200 µm; B–E, 20 µm. Abbreviations: ap, accessory piece; cg, cephalic glands; in, intestinal caecum; mco, male copulatory organ; mh, marginal hook; o, oötype; od, oviduct; ov, ovary; ph, pharynx; pr, prostatic reservoir; sr, seminal reservoir; sv, seminal vesicle; t, testis; va, vagina; vd, vas deferens; vl, vitellaria; vp, vaginal pore.
Fig. 2 in First Japanese Record of Heteropriapulus heterotylus (Monogenea: Dactylogyridae), from the Alien Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) in Okinawa
Fig. 2. Heteropriapulus heterotylus (Jogunoori, Kritsky and Venkatanarasaiah, 2004). A, Whole mount (ventral view); B, dorsal anchors; C, ventral anchors; D, dorsal bar; E, ventral bar; F, hook; G, male copulatory organ; H, vagina. Scale bars: A, 50 µm; B–G, 10 µm. Abbreviations: ap, accessory piece; cl, cephalic lob; co, copulatory organ; es, eye-spot (black, ventral; gray, dorsal); ho, hook; ic, intestinal caeca; ov, ovary; ph, pharynx; pr, prostatic reservoir; sv, seminal vesicle; te, testis; vf, vitelline follicles; vt, vagina.
Fig. 1 in First Japanese Record of Heteropriapulus heterotylus (Monogenea: Dactylogyridae), from the Alien Catfish Pterygoplichthys disjunctivus (Siluriformes: Loricariidae) in Okinawa
Fig. 1. Measurements of hard parts of Heteropriapulus heterotylus (Jogunoori, Kritsky and Venkatanarasaiah, 2004). A, Dorsal anchor; B, ventral anchor; C, bar; D, hook; E, male copulatory organ. Abbreviations: al, accessory piece length; apl, anchor patch length; atl, anchor total length; bmw, bar median width; btl, bar total length; btw, bar total width; cl, copulatory organ length; hl, hook length; irl, inner root length; pl, point length; sl, shaft length.
Figure 2 in Spinal deformities in Amazon sailfin catfish Pterygoplichthys pardalis (Siluriformes: Locariidae), an introduced fish in the Palizada River (Southeastern Mexico)
Figure 2. - Lateral view of deformed Amazon sailfin catfish Pterygoplichthys pardalis from the Palizada River, Campeche (Mexico). A: Kyphosis; B: Scoliosis.
Figure 3. - Dorsal view X in Spinal deformities in Amazon sailfin catfish Pterygoplichthys pardalis (Siluriformes: Locariidae), an introduced fish in the Palizada River (Southeastern Mexico)
Figure 3. - Dorsal view X-ray radiographs of deformed Amazon sailfin catfish Pterygoplichthys pardalis from the Palizada River, Campeche (Mexico). A: Normal specimen; B: Specimen with scoliosis; C: Specimen with kyphosis-scoliosis.
Fig. 59. Pterygoplichthys joselimaianus, 270 in The non-native freshwater fishes of Singapore: an annotated compilation
Fig. 59. Pterygoplichthys joselimaianus, 270 mm SL, Pangsua Pond (dorsal, lateral, and ventral views).
Fig. 58. Pterygoplichthys disjunctivus, 355 in The non-native freshwater fishes of Singapore: an annotated compilation
Fig. 58. Pterygoplichthys disjunctivus, 355 mm SL, Woodlands Pond (dorsal, lateral, and ventral views).
Figure 1 in Spinal deformities in Amazon sailfin catfish Pterygoplichthys pardalis (Siluriformes: Locariidae), an introduced fish in the Palizada River (Southeastern Mexico)
Figure 1. - Collection area of Amazon sailfin catfish in the Palizada River, Campeche, Mexico.
Fig. 60. Pterygoplichthys pardalis, 320 in The non-native freshwater fishes of Singapore: an annotated compilation
Fig. 60. Pterygoplichthys pardalis, 320 mm SL, Bishan Park (dorsal, lateral, and ventral views).
Environmental-related variation of stoichiometric traits in body and organs of non-native sailfin catfishes Pterygoplichthys spp.
<p><span>Intraspecific variation in stoichiometric traits was </span><span>thought to be</span><span> an adaptive response to reduce the elemental imbalance between organisms and diet in the habitat. Studying the spatial variation of stoichiometric traits of non-native species and the factors </span><span>contributing</span><span> to the variation could help to better understand the invasion mechanism of non-native fish. </span></p> <p><span>In this study, stoichiometric traits (i.e. carbon [C], phosphorus [P], calcium [Ca] and their ratios) variation in the body and organs of non-native sailfin catfishes <em>Pterygoplichthys</em> spp. were investigated across 13 river sections in the main river basins of south China. The relationships between environmental factors and stoichiometric traits were analyzed using a general linear model and an information-theoretic approach. </span><span>A manipulated feeding experiment was conducted to investigate the impact of food quality on the stoichiometry of sailfin catfishes in a greenhouse.</span></p> <p><span>Sailfin catfishes exhibited considerable variability in body and organ elemental composition. Site identity was the main factor contributing to the variation</span><span>, which could be explained </span><span>by a combination of environmental factors</span><span> including climate, diet quality, fish species richness, and trophic status in the invaded rivers.</span> <span>Water chemistry (i.e. total nitrogen and phosphorus, ammonia nitrogen, and soluble reactive phosphorus) contributed to the most variation of stoichiometric traits. </span><span>Imbalances of P and Ca</span><span> between sailfin catfishes and food resources</span><span> varied among sampling sites, </span><span>reflecting </span><span>the spatial heterogeneity of nutrient limitation.</span><span> Juvenile sailfin catfishes exhibited stoichiometric homeostasis (0<1/H<0.25) for all elemental contents and ratios in the </span><span>feeding experiment.</span></p> <p><span>These findings suggested variation in stoichiometric traits of sailfin catfishes might be attributed to the changes in elemental metabolism to cope with context-specific environments. </span><span>This study provided heuristic knowledge about environmental-related variation in stoichiometric traits, which could enhance the understanding of the non-native species' adaptation to resource fluctuation in the invaded ecosystems. </span></p>
Chromosome-level genome assembly of Pterygoplichthys pardalis reveals its genetic basis of extensive invasion
<p>The catfish, <em>Pterygoplichthys</em> <em>pardalis</em>, which belongs to the Loricariidae family, an invasive species which has caused huge damage to the ecological environment. However, the high-quality reference genome for the catfish has not yet been reported. In this study, we successfully assembled the first chromosome-level high-quality genome of <em>P</em>. <em>pardalis</em> using the data we produced from multiple sequencing platforms, which contains 26 chromosomes and with a scaffold N50 of 49.47 Mb. Different evaluation methods all indicate the high connectivity and accuracy of the <em>P</em>. <em>pardalis</em> genome we got. We predicated 23,859 protein-coding genes in the <em>P</em>. <em>pardalis</em> genome, and 22,169 (~92.92%) coding genes could be functionally annotated in public databases. Phylogenetic relationship analysis found <em>P</em>. <em>pardalis</em> was clustered with all the catfishes we used and diverged with them 132.5 million years ago. Besides, whole-genome collinearity analysis found that chromosome 6 of <em>P</em>. <em>pardalis</em> was aligned to two distinct chromosomes both for <em>Ameiurus</em> <em>melas</em>, <em>Pangasianodon</em> <em>hypophthalmus</em> and <em>Ictalurus</em> <em>punctatus</em>, indicating that there may have been a chromosomal fusion/fission event occurred. Furthermore, many immune-system-related genes were large-scale expanded in <em>P</em>. <em>pardalis</em> genome, which may make great contributions to their adaptive traits, even for the highly polluted environmental conditions, and successful invasion. Taken together, this study not only provides insights into the genetic basis of the successful invasion of <em>P</em>. <em>pardalis</em>, but also provides important data resources for comparative genomic analysis of <em>P</em>. <em>pardalis</em> in Siluriformes in the future.</p>
Environmental-related variation of stoichiometric traits in body and organs of non-native sailfin catfishes Pterygoplichthys spp.
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Chromosome-level genome assembly and annotation of Pterygoplichthys pardalis
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FIGURE 6 in Record of the Non-native Suckermouth armored catfish hybrid Pterygoplichthys pardalis (Castelnau,1985) x Pterygoplichtys disjunctivus (Weber, 1991) (Siluriformes: Loricariidae) in Honduras
FIGURE 6. Eggs found in female Pterygoplichthys pardalis x disjunctivus Specimen MUVS-204. A. Eggs measuring 2 mm B. Eggs Measuring 3 mm.
FIGURE 2 in Record of the Non-native Suckermouth armored catfish hybrid Pterygoplichthys pardalis (Castelnau,1985) x Pterygoplichtys disjunctivus (Weber, 1991) (Siluriformes: Loricariidae) in Honduras
FIGURE 2. Map detailing sample localities for specimens of Pterygoplichthys pardalis x disjunctivus: A) Lake Yojoa B) Jucutuma lagoon.
FIGURE 4 in Record of the Non-native Suckermouth armored catfish hybrid Pterygoplichthys pardalis (Castelnau,1985) x Pterygoplichtys disjunctivus (Weber, 1991) (Siluriformes: Loricariidae) in Honduras
FIGURE 4. Variations in ventral spots of the three specimens of hybrid Pterygoplichthys pardalis x disjunctivus captured in the Yojoa Lake, Honduras and Jucutuma Lagoon, 2018: A) MUVS-203 intermediate forms in ventral vermiculations, B) MUVS-204 with intermediate ventral spots C) La Naturaleza Tank specimen with intermediate ventral vermiculations and spots.
FIGURE 1 A in The identity of the exotic Pterygoplichthys sailfin catfishes in Sri Lanka (Teleostei Loricariidae)
FIGURE 1 A, Variations in ventral color patterns of the Pterygoplichthys species. 1, holotype of Pterygoplichthys disjunctivus, MZUSP 28360, with ventral vermiculations; 2–4, individuals identified as P. disjunctivus morphotype in Sri Lanka; 5–9, individuals identified as intermediate morphotypes; 10–11, individuals identified as P. pardalis morphotype; 12, holotype of P. pardalis, MNHN A-9574 with discrete ventral spots. Photographs 1 and 12 are courtesy of Michel Donato Gianeti and Malclyne Hautecoeur, respectively. B, Distribution of Pterygoplichthys species in Sri Lanka. Black lines represent basin boundaries. C, Median-joining haplotype network for Pterygoplichthys samples based on the 452 bp fragment of the 16S-rRNA gene. Sizes of circles correspond to the number of individuals sharing a given haplotype. Number of mutational steps are indicated by hatch-marks along the edges. D, Factor scores of PC1 vs PC2 of the Principal Component Analysis of species identified as P. disjunctivus morphotype (black circle, n=12), P. pardalis morphotype (white circle, n=5) and intermediate morphotype (white square, n=11) based on 13 external measurements.
Fig. 2 in The Global Invasion of the Suckermouth Armored Catfish Genus Pterygoplichthys (Siluriformes: Loricariidae): Annotated List of Species, Distributional Summary, and Assessment of Impacts
Fig. 2. Number of exotic records of Pterygoplichthys spp. by year recorded in the literature. Records with missing dates were treated using the publication date and the single record of "late 1950s" was treated as 1960. A total of 71 records of exotic Pterygoplichthys spp., either individuals or populations, were reported through October, 2017; 55 of these records represented established populations.
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