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14 results for “Arapaima gigas”
Figure 1. A in Is there a future for artisanal fishing in the Amazon? The case of Arapaima gigas
Figure 1. A) First sightings of Arapaima gigas (pirarucu) by fishermen in the area of the Santo Antônio reservoir (Madeira River) by decade; B) the possible origin of Arapaima gigas (pirarucu) in the Brazil-Bolivia border fish market and in the Santo Antônio Reservoir, where new occurrences are reported. Legend: Pisci = Fish farming.
Figure 2 in Is there a future for artisanal fishing in the Amazon? The case of Arapaima gigas
Figure 2. Madeira River study area highlighting the locality (grey square) where the native pirarucu (Araipama gigas) populations exist, and the localities (asterisks) where non-native pirarucu have expanded since 2000 according to the reports of fishermen. Inserted graphs show the fishery production landed in the region of Guajará Mirim (Brazil) in 2016 (Source: present study) and Riberalta (Bolívia) in 2011 (Méndez et al. 2012).
Figure 3 in Is there a future for artisanal fishing in the Amazon? The case of Arapaima gigas
Figure 3. Invasive Arapaima gigas (pirarucu) fished by a local angler in Mamoré River at Brazil-Bolivia border (Picture courtesy of: Fihsher's Association of Guajará Mirim).
Figure 2 in Morphological and histological data on the structure of the lingual toothplate of Arapaima gigas (Osteoglossidae; Teleostei)
Figure 2. - Arapaima gigas. Dorsal view of the hyoid and branchial skeleton (After Taverne, 1977). (Bbr 1 = Basibranchial; Cbr 1-5 = Ceratobranchial; Chy = Ceratohyal; DmBr 1-5 = Dermobasibranchial; Ebr = Epibranchial; Ehy = Epihyal; HBr 1-3 = Hypobranchial; lb = gill rackers; PBr = Pharyngobranchial 2-4). Scale bar = 2 cm.
Figure 1 in Morphological and histological data on the structure of the lingual toothplate of Arapaima gigas (Osteoglossidae; Teleostei)
Figure 1. - Arapaima gigas. Lateral view of the skull (After Taverne, 1977). (Ang = Angular; Ant = Antorbital; Chy = Ceratohyal; Den = Dental; Dsph = Dermosphenotic; Iop = Interopercular; Iorb 1-4 = Infraorbitar; Iop = Infraopercular; Mx = Maxilla; Op = Opercular; Pmx = Premaxilla; Pop = Preopercular; Pt Posttemporal; Sop = Subopercular). Scale bar = 2 cm.
Figure 4 in Morphological and histological data on the structure of the lingual toothplate of Arapaima gigas (Osteoglossidae; Teleostei)
Figure 4. - Arapaima gigas. Dorsal view of the surface of the lingual dentary plate showing numerous teeth. Axis xx' and yy' demarcate the localisation of the transverse sections and the rectangles a and b point to the frontal sections. Scale bar = 1 cm. Figure 5. - Arapaima gigas. Frontal view of the cross section (yy') of the lingual dentary plate. Detail of the spatial arrangement of the bony trabeculae between the two bony laminae. A sagittally-sectioned tooth is squared (see Fig. 7). Cm = medullar cavity. Scale bar = 2 mm. Figure 6. - Arapaima gigas. External view of the lingual dentary plate showing the translucent tooth tips (arrows). Scale bar = 1 mm. Figure 7. - Arapaima gigas. Detail of the pulp cavity of the lingual tooth squared in Fig. 5. We observe thin infolds of the dentine wall in the pulp cavity (arrowheads). Scale bar = 250 µm.
Figure 3 in Morphological and histological data on the structure of the lingual toothplate of Arapaima gigas (Osteoglossidae; Teleostei)
Figure 3. - Arapaima gigas. Dorsal view of cleared and stained gill arches from specimens of various ontogenetic stages. The visceral arches on the left are in anatomical position, whilst those on the right are unfolded. A: Specimen UERJ PMB-127 (16.7 mm SL). The endoskeleton is fully cartilaginous, lacking any ossification centre, but showing a few teeth (arrowheads) developing in front of the line of copulas between the hyoid arch and second branchial arch (see detail Fig. 3B). B: Same specimen. Detail of the anterior half of the line of copulas showing lingual teeth (arrowheads). C: Specimen UERJ PMB-135 (27.6 mm SL). Basibranchial elements 1-3 and "hypo", "cerato" and "epi" elements show clear areas of diaphyseal ossification. Gill rackers and branchiostegal rays are ossified. D: Specimen UERJ PMB-159 (62.2 mm SL). The tongue plate (basibranchial toothplate) is clearly differentiated. There is at least one posterior toothplate on the surface of basibranchial 4 (arrowhead). E: Same specimen. Detail of the first two basibranchials showing many lingual teeth (arrowheads). F: Specimen UERJ PMB-106 (110 mm SL). The entire hyoid (except basihyal) and branchial skeleton are ossified, with the only joint areas remaining cartilaginous (coloured blue). Some small bony toothplates are located posterior to the line of copulas (arrowheads) at the base of the fifth gill arch. (Ab1-Ab5 = gill arches 1-5; Ah = hyoid arch; bb1-bb4 = basibranchial 1-4; bh = basihyal; cb1 = ceratobranchial 1; ch = ceratohyal; eb1-4 = epibranchial 1-4; eh = epihyal; hb1 = hypobranchial 1; hh = hypohyal; lb = gill rakers; lc = line copulas; pd Ab4 = branchial arch 4 toothplate; pdl = lingual (basibranchial) toothplate; rb = branchiostegal rays). Scale bars: A, C, E = 1 mm; B = 250 µm; D = 5 mm; F = 10 mm.
Fig. 2 in Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
Fig. 2. Metaphases of Arapaima gigas. (a) Silver nitrate-stained showing two Ag-NOR sites (arrows); (b) and (c) 18S rDNA - FISH showing a single NOR-bearing chromosome pair and NOR size polymorphism (arrows); (d) C-banded chromosomes showing centromeric heterochromatin. Bar = 5 µm.
Fig. 1 in Feeding of juvenile pirarucu (Arapaima gigas, Arapaimidae) in their natural environment, lago Quatro Bocas, Araguaiana-MT, Brazil
Fig. 1. Partial map showing the Tocantins-Araguaia basin. In prominence, the rio Araguaia. Arrow indicates the lago Quatro Bocas.
Inclusion of Spirulina sp. (Arthospira) in the feed of Arapaima gigas (Schinz, 1822) broodstocks: effects on gonadal maturation
<p>Dataset containing information on gonadal development from a trial which tested the Inclusion of <em>Spirulina</em><strong> </strong>sp. (<em>Arthospira</em>) in the feed of <em>Arapaima gigas</em> (Schinz, 1822) broodstocks.</p>
Ultrastructure description of the spermatozoa of the Amazon bonytongue Arapaima gigas (Schinz, 1822)
<p>Dataset containing micrographs obtained through scanning and transmission electron microscopy (SEM and TEM) depicting the ultrastructure of the spermatozoa of <em>Arapaima gigas</em> (Schinz, 1822)</p>
Fig. 4. Arapaima gigas, 181.2 in The non-native freshwater fishes of Singapore: an annotated compilation
Fig. 4. Arapaima gigas, 181.2 mm SL, trade material.
Fig. 1 in Chromosomal characterization of the bonytongue Arapaima gigas (Osteoglossiformes: Arapaimidae)
Fig. 1. Karyotype of Arapaima gigas showing chromosome constrictions in pair 3. Bar = 5 µm.
Transcriptomic analyses reveal genes with sexual dimorphic expression in the Arapaima gigas gonads and brain
GEO Series GSE111883. Arapaima gigas. 24 samples. Type: Expression profiling by high throughput sequencing.
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