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53 results for “mudskipper”
Fig 4 in Morphometrical characterization of the Atlantic mudskipper species (Periophthalmus barbarus) (Linnaeus, 1766) (Perciformes; Gobiiae) from Abonema in Port Harcourt, Rivers State, Nigeria
Fig 4: Scatter plot showing the positions of the measured specimens on a scatter plot. Note the few outliers in the plot.
Figure 1 in First record of the mudskipper Periophthalmus walailakae (Gobiidae) from southeast India
Figure 1. – Geographic distribution of P. walailakae (black dots: Polgar and Khaironizam, 2008) and new record (star); inset: sampling stations in the Vellar estuary, where P. walailakae was first recorded (St- 1–St-3).
Fig. 1 in First Record Of The Mudskipper, Periophthalmodon Septemradiatus (Hamilton) (Teleostei: Gobiidae) From Peninsular Malaysia
Fig. 1. Map of Selangor River at Kampung Kuantan, Selangor, showing known localities where Periophthalmodon septemradiatus were collected (triangles). Inset: map of Peninsular Malaysia with an additional locality (round spot) in Johor.
Fig. 2 in First Record Of The Mudskipper, Periophthalmodon Septemradiatus (Hamilton) (Teleostei: Gobiidae) From Peninsular Malaysia
Fig. 2. Sexual dimorphism on Periophthalmodon septemradiatus [KMZ-NYR000306KK (2)]. a) Male: the first dorsal fin is of moderate height with an elongated spine and contiguous with the second dorsal fins. b) Female: the first dorsal fin is poorly developed and not contiguous with the second dorsal fins.
Fig. 5 in Niche partitioning in two syntopic mudskipper species (Teleostei: Gobiidae: Oxudercinae) in a Singapore mangrove
Fig. 5. Abiotic characterisation of the demarcated permanent plots (n = 18): (a) two-dimensional MDS on canopy cover, sediment organic content and sediment particle sizes, (b) mean canopy cover and (c) mean organic content of the sediment. sig.—significant; n.s.—not significant; error bars—standard error.
Fig. 1 in Niche partitioning in two syntopic mudskipper species (Teleostei: Gobiidae: Oxudercinae) in a Singapore mangrove
Fig. 1. Plot fidelity exhibited by a Periophthalmus walailakae individual monitored over four spring tides—(a) relative positions of concavities in permanent plot, (b) 30 August 2010: individual in burrow A, (c) 12 September 2010: individual in burrow B, (d) 27 September 2010: individual in burrow C, (e) 11 October 2010: individual in burrow B.
Fig. 3 in Niche partitioning in two syntopic mudskipper species (Teleostei: Gobiidae: Oxudercinae) in a Singapore mangrove
Fig. 3. Prey items encountered in Periophthalmodon schlosseri and Periophthalmus walailakae: (a) Paracleistostoma depressum, (b) Baruna trigranulum, (c) Haberma nanum, (d) winged insect, (e) sipunculid worm and (f) polychaete worm.
Fig. 6 in A New Species Of Mudskipper, Boleophthalmus Poti (Teleostei: Gobiidae: Oxudercinae) From The Gulf Of Papua, Papua New Guinea, And A Key To The Genus
Fig. 6. Multivariate morphological analyses of the three species of Boleophthalmus without notched dentary teeth, supporting the separation of the examined specimens in 3 morphologically distinct groups. A: PCO scatter plot of meristic characters, after logarithmic transformation. The two coordinate axes Coord 1 and Coord 2 explained the highest percentage of total variance (in parentheses); closed lined (convex hulls) delimit clusters of specimens of the same species. B: PCA distance biplot of morphometric characters after Darroch & Mosimann transformation (1985). The two principal component axes PC1 and PC2 explained the highest percentage of total variance (in parentheses); closed lines (convex hulls) delimit clusters of specimens of the same species; the variables are projected onto the scattergram as vectors, graphically visualising their PCA loadings, or the degree they enter into the principal components. PLVL separates caer from bird and poti, while D1BL separates bird from caer and poti. bird = B. birdsongi (n = 11); caer = B. caeruleomaculatus (n = 4); poti = B. poti (n = 10). See Tables 3, 4 for the dataset.
Fig. 5 in A New Species Of Mudskipper, Boleophthalmus Poti (Teleostei: Gobiidae: Oxudercinae) From The Gulf Of Papua, Papua New Guinea, And A Key To The Genus
Fig. 5. Shape and colouration of freshly dead species of Boleophthalmus with un-notched dentary teeth: A, female of B. birdsongi (95 mm; ZRC 52250); B, female of B. caeruleomaculatus (106 mm; MSNG 54689); and C, paratype, male of B. poti (83.4 mm; USNM 40566). Scale bars = 10 mm.
Fig. 3. Boleophthalmus poti, BMNH 2011.1.27.1 in A New Species Of Mudskipper, Boleophthalmus Poti (Teleostei: Gobiidae: Oxudercinae) From The Gulf Of Papua, Papua New Guinea, And A Key To The Genus
Fig. 3. Boleophthalmus poti, BMNH 2011.1.27.1. Lateral view of the suspensorium. Abbreviations: ap = autopalatine; d = dentary; ep = ectopterygoid; hm = hyomandibular; io = interopercle; m = maxilla; mp = metapterygoid; op = opercle; pm = premaxilla; po = preopercle; pp = ascending processes of the premaxilla; q = quadrate; sop = subopercle; sp = symplectic; st = symphyseal tooth. Scale bar = 1 mm. the original image was reversed horizontally.
Fig. 4 in A New Species Of Mudskipper, Boleophthalmus Poti (Teleostei: Gobiidae: Oxudercinae) From The Gulf Of Papua, Papua New Guinea, And A Key To The Genus
Fig. 4. Geographical distribution of the species of Boleophthalmus: point data; bird = Boleophthalmus birdsongi; bodd = Boleophthalmus boddarti; caer = Boleophthalmus caeruleomaculatus; duss = Boleophthalmus dussumieri; pect = Boleophthalmus pectinirostris; poti = Boleophthalmus poti. Data from Murdy, 1989; Swennen et al., 1995; Rainboth, 1996; Takita et al., 1999; Nakabo, 2002; Nanami & Takegaki, 2005; Chen et al., 2007; Froese & Pauly, 2007; Ocean Biogeographic Information System, 2007; Baeck et al., 2008; Global Biodiversity Information Facility, 2008; Larson et al., 2008; Polgar & Crosa, 2009. Data in online databases were verified by comparison with museum material and published references.
Fig. 2 in A New Species Of Mudskipper, Boleophthalmus Poti (Teleostei: Gobiidae: Oxudercinae) From The Gulf Of Papua, Papua New Guinea, And A Key To The Genus
Fig. 2. Boleophthalmus poti: A, holotype, MSNG 56891; B, paratype, preserved specimen, female (108.2 mm) (BMNH 2011.1.27.1); C, an individual in its natural habitat, on the mud banks of Wapi Creek, Purutu Island, Fly River delta. Scale bars =10 mm.
Fig. 1 in A New Species Of Mudskipper, Boleophthalmus Poti (Teleostei: Gobiidae: Oxudercinae) From The Gulf Of Papua, Papua New Guinea, And A Key To The Genus
Fig. 1. Diagram of a mudskipper with 54 lateral scale rows (head to the left); 1 = scale overlapping the pectoral girdle (shaded); hc = scale column immediately before or overlapping with the hypural crease (shaded); scale rows (Hubbs & Lagler, 2004) are traced out at intervals of 10 rows; note that the rows can be detected and followed both above and below the lateral midline. For a comparison, Murdy's (1989) count of longitudinal scales (~70 scales are crossed by the dashed line) is also illustrated.
Figure 5 in Linking a gap, First record of dusky-gilled mudskipper Periophthalmus variabilis Eggert, 1935 (Perciformes: Gobiidae) in southern Sumatra, Indonesia
Figure 5. Raised first and second dorsal fins of P. variabilis with characteristic pigmentation (© M. Iqbal).
Figure 4 in Linking a gap, First record of dusky-gilled mudskipper Periophthalmus variabilis Eggert, 1935 (Perciformes: Gobiidae) in southern Sumatra, Indonesia
Figure 4. Ventral view of P. variabilis showing pelvic fins with frenum and the inner rays fused at their base (© M. Iqbal).
Figure 1 in Linking a gap, First record of dusky-gilled mudskipper Periophthalmus variabilis Eggert, 1935 (Perciformes: Gobiidae) in southern Sumatra, Indonesia
Figure 1. Distribution of Periophthalmus variabilis, circles indicate previous records, triangle represents most recent record in southern Sumatra, Sugihan estuary, 02°55'41.8''S; 104°45'51.6''E.
Figure 2 in Linking a gap, First record of dusky-gilled mudskipper Periophthalmus variabilis Eggert, 1935 (Perciformes: Gobiidae) in southern Sumatra, Indonesia
Figure 2. Location at Sugihan estuary in southern Sumatra where P. variabilis was found (© M. Iqbal).
Anatomical insights into fish terrestrial locomotion: a study of barred mudskipper (Periophthalmus argentilineatus) fins based on μCT 3D reconstructions
<p>Mudskippers are a group of extant ray-finned fishes with an amphibious lifestyle and serve as exemplars for understanding the evolution of amphibious capabilities in teleosts. A comprehensive anatomical profile of both the soft and hard tissues within their propulsive fins is essential for advancing our understanding of terrestrial locomotor adaptations in fish. Despite the ecological significance of mudskippers, detailed data on their musculoskeletal anatomy remains limited. In the present research, we utilized contrast-enhanced high-resolution micro-computed tomography (μCT) imaging to investigate the barred mudskipper, <em>Periophthalmus argentilineatus</em>. This technique enabled detailed reconstruction and quantification of the morphological details of the pectoral, pelvic, and caudal fins of this terrestrial mudskipper, facilitating comparison with its aquatic relatives. Our findings reveal that <em>P. argentilineatus</em> has undergone complex musculoskeletal adaptations for terrestrial movement, including an increase in muscle complexity and muscle volume, as well as the development of specialized structures like aponeuroses for pectoral fin extension. Skeletal modifications are also evident, with features such as a reinforced shoulder-pelvic joint and thickened fin rays. These evolutionary modifications suggest biomechanically advanced fins capable of overcoming the gravitational challenges of terrestrial habitats, indicating a strong selective advantage for these features in land-based environments. The unique musculoskeletal modifications in the fins of mudskippers like <em>P. argentilineatus</em>, compared to their aquatic counterparts, mark a critical evolutionary shift toward terrestrial adaptations. This study not only sheds light on the specific anatomical changes facilitating this transition but also offers broader insights into the early evolutionary mechanisms of terrestrial locomotion, potentially mirroring the transformative journey from aquatic to terrestrial life in the lineage leading to tetrapods.</p>
Complete mitochondrial genome sequence of the Atlantic Mudskipper (Periophthalmus barbarus) (Linnaeus, 1766) (Perciformes: Gobiidae)
<p>The complete mitochondrial genome of the Atlantic mudskipper (<em>Periophthalmus barbarus</em>) was determined in this study. The specimen was collected from Abonnema, Nigeria (4.73075, 6.77565). The complete mitogenome sequence of <em>P. barbarus</em> would be useful for further studies on molecular phylogenetic relationship and population genetics of the subfamily Oxudercinae.</p>
Fig 2 in Morphometrical characterization of the Atlantic mudskipper species (Periophthalmus barbarus) (Linnaeus, 1766) (Perciformes; Gobiiae) from Abonema in Port Harcourt, Rivers State, Nigeria
Fig 2: Principal component plot 1 of the measurements.
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