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48 results for “Rhamdia quelen”
Fig. 2 in Larvae occurrences of Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) in an area under dam influence in the upper Paraná River region, Brazil
Fig. 2. Average abundance of R. quelen larvae by spawning period (a), month (b), and sampling station (c).
Fig. 3 in Larvae occurrences of Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) in an area under dam influence in the upper Paraná River region, Brazil
Fig. 3. Monthly density and per sampling stations of the larval development stages of Rhamdia quelen in Ilha Grande National Park.
Fig. 1 in Larvae occurrences of Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) in an area under dam influence in the upper Paraná River region, Brazil
Fig. 1. Location of sampling stations (black dots). (1: Bandeirantes right channel; 2: Amambaí; 3: Triângulo; 4: Porto Santo Antônio; 5: Peruzzi; 6: Paraná/Iguatemi; 7: Iguatemi; 8: Paraná/Saraiva; 9: Saraiva middle; 10: Saraiva channel; 11: Ilha Grande right channel; 12: Bandeirantes left channel; 13: Ilha Grande Pontal; 14: Alvarenga; 15: Esmeralda; 16: Três Coqueiros; 17: São João; 18: Porto Luiz; 19 Porto Cerâmica; 20: Piquiri; 21: Porto Terra Roxa; 22: Ilha Grande left channel).
Fig. 1 in Transport of jundiá Rhamdia quelen juveniles at different loading densities: water quality and blood parameters
Fig. 1. Plasma cortisol and blood glucose of jundiá juveniles transported at different loading densities. Different letters over the bars indicate significant differences (P <0.05) among treatments within each experimental time. Asterisks show significant differences (P <0.001) when compared to the initial value.
Fig. 3 in Ion fluxes in silver catfish (Rhamdia quelen) juveniles exposed to different dissolved oxygen levels
Fig. 3. Na+ (A) and Cl- (B) net fluxes of silver catfish juveniles acclimated to 2.5 (2.5 – 6.0) or 6.0 (6.0 – 6.0) mg.L-1 dissolved oxygen levels for three weeks and transferred to aquaria with 6.0 mg.L-1 dissolved oxygen levels. Data expressed as mean ± SEM. Positive values indicate net influxes, and negative values net effluxes. Mean value of Cl- flux at 24 h in juveniles transferred to 6.0 mg.L-1 is too small to be seen in the figure. * significantly different from juveniles transferred to 6.0 mg.L-1 at the same time after transference by one-way ANOVA and Tukey test (P <0.05).
Fig. 3 in Skin extract from Rhamdia quelen (Siluriformes: Heptapteridae) does not promote stress in conspecifics
Fig. 3. Locomotion displayed by Rhamdia quelen. Symbols
Figure 2 in Gross brain morphology of Rhamdia quelen (Quoy & Gaimard 1824) (Ostariophysi: Siluriformes: Heptapteridae)
Figure 2. Brain of Rhamdia quelen, MZUEL 6036, 222.37 mm SL, in (a) dorsal, (b) lateral and (c) ventral views. Scale bar = 1 mm.
Figure 4 in Gross brain morphology of Rhamdia quelen (Quoy & Gaimard 1824) (Ostariophysi: Siluriformes: Heptapteridae)
Figure 4. Details brain regions of species of Heptapteridae in dorsal view. (a) Pimelodella gracilis, MZUEL 1574; (b) Imparfinis mirini, MZUEL 4028; (c) Rhamdia quelen, MZUEL 6036; (d) Imparfinis mirini, MZUEL 4028. White arrows indicate the position of tectum mesencephali in relation to telencephalon. Red arrows indicate the position of lateral line lobe in relation to lobus vagi. Scale bar = 1 mm.
Figure 1 in Gross brain morphology of Rhamdia quelen (Quoy & Gaimard 1824) (Ostariophysi: Siluriformes: Heptapteridae)
Figure 1. Camera lucida drawing of the brain and neurocranium of an adult specimen of Rhamdia quelen, MZUEL 7418, 64.03 mm SL, in dorsal (a) and ventral (b) views. a.f: anterior fontanel; ap: autopalatine; boc: basioccipital; bol: bulbus olfactorius; ep: epiotic; exc: extracapula; exo: exoccipital; fr: frontal; l.et: lateral ethmoid; ma: maxilla; me: mesethmoid; nII: nervus opticus; nV: nervus trigeminus; nVII: nervus facialis; nVIII: nervus octavus; nX: nervus vagus; na: nasal; nllp: nervus lineae lateralis posterior; of: olfactory organ; os: orbitosphenoid; pa: parasphenoid; p.f: posterior fontanel; p.m: premaxillary; pro: prootic; ps: pterosphenoid; pt: pterotic; soc: supraoccipital; socp: supraoccipital process; sph: sphenotic; tol: tractus olfactorius; vo: vomer. Scale bar = 1 mm.
Figure 3 in Gross brain morphology of Rhamdia quelen (Quoy & Gaimard 1824) (Ostariophysi: Siluriformes: Heptapteridae)
Figure 3. Brain of species of Heptapteridae in dorsal view. (a) Cetopsorhamdia iheringi, MZUEL 2260; (b) Goeldiella eques, MZUEL 7417; (c) Heptapterus mustelinus, MZUEL 5074; (d) Imparfinis mirini, MZUEL 4028; (e) Pimelodella gracilis, MZUEL 1574; (f) Phenacorhamdia tenebrosa, MZUEL 2706; (g) Rhamdia quelen, MZUEL 6036. Scale bar = 1 mm.
FIGURE 6 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 6. LineAr regression PloTs of The mAin morPhologiCAl meAsuremenTs ThAT diAgnose The Two new sPeCies of Rhamdia in souThern CDSEB region. Blue CirCle: Rhamdia Aff. quelen; red CirCle: Rhamdia gabrielae; green TriAngle: Rhamdia eurycephala. DAshed lines rePresenT 95% ConfidenCe inTervAl.
FIGURE 3 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 3. MismATCh disTribuTion for: (A) CoAsTAl PlAin GrouP (Rhamdia aff. quelen), (B) MAquiné-MAmPiTubA GrouP (Rhamdia gabrielae), And (C) TubArão GrouP (Rhamdia eurycephala). Coloured line is observed dATA And grAy line is exPeCTed dATA.
FIGURE 9 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 9. Rhamdia eurycephala (UFRGS 19908), holoTyPe, 246.6 mm SL. In dorsAl, lATerAl, And venTrAl views.
FIGURE 2 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 2. HAPloTyPe neTwork using MediAn-Joining for Rhamdia sAmPles for miToChondriAl dATA (mTDNA) And nuCleAr dATA (nDNA). EACh CirCle rePresenTs A single hAPloTyPe And iTs size is ProPorTionAl To iTs frequenCy. DifferenT Colours rePresenT differenT PoPulATions. CoAsTAl PlAin GrouP (Rhamdia Aff. quelen) rePresenTed in blues And grAy, TubArão GrouP (Rhamdia eurycephala) rePresenTed in green, And MAquiné-MAmPiTubA GrouP (Rhamdia gabrielae) rePresenTed in hoT Colours. '
FIGURE 8 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 8. HoloTyPe of Rhamdia gabrielae (UFRGS 20010), holoTyPe, 194 mm SL. In dorsAl, lATerAl, And venTrAl views.
FIGURE 5 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 5. SPeCies Tree wiTh sTrongesT suPPorT ACCording To BAyesiAn PosTerior ProbAbiliTies ProduCed in BeAsT. Numbers on The ToP rePresenT PosTerior ProbAbiliTies And number on The boTTom of Are The divergenCe dATes of The resPeCTive node. The Colourful brAnChes indiCATe The grouPs reCovered in Previous AnAlyses. (A) CoAsTAl PlAin GrouP, (B) MAquiné-MAmPiTubA GrouP (Rhamdia gabrielae) And (C) TubArão GrouP (Rhamdia eurycephala).
FIGURE 7 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 7. SCATTer PloT of Combined sAmPles of Rhamdia gabrielae (red), Rhamdia eurycephala (green) And Rhamdia Aff. quelen (blue) on The seCond And Third PrinCiPAl ComPonenT Axis.
FIGURE 10 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 10. VAriATion in seA level for The lAsT 2 MA shown ACCording To Miller et al. (2011). The red lines rePresenT The PoinTs of divergenCe beTween The lines of RhAmdiA, A) FirsT divergenCe And B) seCond divergenCe
FIGURE 4 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 4. Gene Tree for All DNA dATA seT ProduCed by BAyesiAn AnAlysis in MrBAyes. VAlues on nodes rePresenT BAyesiAn PosTerior ProbAbiliTies: (A) CoAsTAl PlAin GrouP (Rhamdia Aff. quelen), (B) MAquiné-MAmPiTubA GrouP (Rhamdia gabrielae) And (C) TubArão GrouP (Rhamdia eurycephala). TB (green)—rio TubArão; ARA (OrAnge)—uPPer rio ArArAnguá; MP (Pink)— rio MAmPiTubA; TF (red)—rio Três ForquilhAs; MAQ (yellow)—rio MAquiné; TR (dArk blue)—TrAmAndAí lAgoons; ARAB (lighT blue)—lower rio ArArAnguá; CM (grey)—lAgunA dos PATos.
FIGURE 1 in Morphology and molecular data reveal the presence of two new species under Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) species complex
FIGURE 1. STudy AreA: 1) rio MAquiné; 2) rio Três ForquilhAs; 3) rio MAmPiTubA; 4) rio ArArAnguá, And 5) rio TubArão. The hydrogrAPhiC bAsins Are surrounded by Coloured lines. Rivers 1–4 form PArT of The TrAmAndAí-MAmPiTubA eCoregion. Red doTs rePresenT ColleCTion loCAliTies of Rhamdia sPeCimens used in geneTiC AnAlyses.
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