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77 results for “Tocantins River”
Fig. 5 in Integrative taxonomy reveals two new cryptic species of Hyphessobrycon Durbin, 1908 (Teleostei: Characidae) from the Maracaçumé and middle Tocantins River basins, Eastern Amazon region
Fig. 5. Hyphessobrycon geryi Guimarães, Brito, Bragança, Katz & Ottoni sp. nov., paratype (CICCAA 02348), 22.7 mm SL; Brazil: Maranhão State: Lower Tocantins River basin; living specimen photographed immediately after collection.
FIGURE 4 in Rineloricaria quilombola: a new species of whiptail catfish (Siluriformes, Loricariidae, Loricariinae) from upper and middle Tocantins River basin, Brazil
FIGURE 4. Color in life in specimens from ribeirão Taquaruçuzinho, same locality of the holotype.
Figure 7 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 7 - SEM image of Eirinicaris antonioi sp. n. Male: A P1 showing inner seta of basis; B P3 with endopod and thumb in colour, P4; C claviform aesthetasc representing the endopod of P3; D P5, lateral view, with distal pore arrowed; E P5 and P6. Female: F pro- and urosomites, ventral view showing endopods of P3 and P4, and P5 and P6. Scale bars A = 10µm; B = 10µm; C = 1µm; D = 2µm; E = 2µm; F = 102µm.
Figure 5 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 5 - SEM image of Eirinicaris antonioi sp. n. A male habitus, lateral view; B female habitus, ventral view. Scale bar A = 10µm; B = 20µm.
Figure 4 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 4 - Eirinicaris antonioi sp. n. Female: A antennule; B P1, depicted with coxa, basis enp-1 and exp-1; C P2 enp; D P3, anterior; E P4 anterior; F P5, with distal pore arrowed; G genital field; H anal somite with caudal furca; I furca, lateral view. Scale bar 1 (A, F) and 2 (C, D, E, G, H, I) = 25µm.
Figure 2 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 2 - Eirinicaris antonioi sp. n. Male: A habitus, lateral view; B anal somite with caudal furca, lateral view; C anal somite with caudal furca, dorsal view; D anal somite with caudal furca, ventral view; E mouthparts; e1 antennule; e2 mandible; e3 maxillulae; e4 maxillae; e5 maxilliped. Scale bars: 1 = 50 µm (A); 2 (B, C, D) = 50 µm; 3 (E) = 20 µm.
Figure 1 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 1 - Study area. Type locality indicated with triangle. Insert shows the type locality (Água Fria River, National Park of the Chapada dos Veadeiros, Brazil) of Eirinicaris antonioi sp. n.
Figure 6 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 6 - SEM image of Eirinicaris antonioi sp. n. Male: A antennule in lateral view; B antennule segments 6 (yellow) and 7 (coral); C antennule, segment 8 showing modified seta; D telson and furca, lateral; E furca, dorsal view; F furca, ventral view, showing modified setae I, II and III and distal pore arrowed. Scale bars A = 10µm; B = 1µm; C = 200µm; D = 2µm; E = 2µm; F = 2µm.
Figure 9 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 9 - Phylogeny of the Parastenocaridinae reconstructed by applying Hennigian principles and criterion of putative parsimony based on the data matrix of Table 1. The cladogram was generated using the program NONA (Goloboff 1999) for cladistic parsimony, and in interface with WINCLADA (Nixon 2002). For details see Material and Methods. Characters as explained in the text; binary or multistate, polarized a priori; length of cladogram = 146. Circles represent autapomorphies, open circles represent autapomorphies by reversion of character state. Direction of character transformation indicated below each character.
Figure 8 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 8 - Eirinicaris antonioi sp. n. Female: A last urosomite, telson and furca, ventral view, proximal and distal pores arrowed; B telson and furca, lateral view. Scale bars A = 2µm; B = 10µm.
Figure 3 from: Corgosinho PHC, Schizas NV, Previattelli D, Falavigna da Rocha CE, Santos-Silva EN (2017) A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae. Zoosystematics and Evolution 93(1): 167-187. https://doi.org/10.3897/zse.93.11602
Figure 3 - Eirinicaris antonioi sp. n. Male: A antennule, with process arrowed on segment seven, segment six laterally detached; B P1, anterior; C P2, anterior; D P3, anterior; d1 distal part of exopod of P3 showing the apophysis, anterior; d2 distal part of exopod of P3 showing the apophysis, posterior; E P4, anterior; F P5, with distal pore arrowed. Scale bar = 25µm.
Figure 4 from: Costa WJEM, Amorim PF (2018) A new miniature cryptic species of the seasonal killifish genus Spectrolebias from the Tocantins River basin, central Brazil (Cyprinodontiformes, Aplocheilidae). Zoosystematics and Evolution 94(2): 359-368. https://doi.org/10.3897/zse.94.28085
Figure 4 Spectrolebias gracilis sp. n., UFRJ 6440, holotype, male, 19.2 mm SL; Canabrava floodplains.
Figure 2 from: Costa WJEM, Amorim PF (2018) A new miniature cryptic species of the seasonal killifish genus Spectrolebias from the Tocantins River basin, central Brazil (Cyprinodontiformes, Aplocheilidae). Zoosystematics and Evolution 94(2): 359-368. https://doi.org/10.3897/zse.94.28085
Figure 2 Species delimitation tree generated by the General Mixed Yulle Coalescent (GMYC) and the Bayesian Poisson Tree Processes (bPTP) models, using a fragment of the gene COI. Black lines indicate branching processes among species, red lines indicate branching processes within species.
Figure 1 from: Costa WJEM, Amorim PF (2018) A new miniature cryptic species of the seasonal killifish genus Spectrolebias from the Tocantins River basin, central Brazil (Cyprinodontiformes, Aplocheilidae). Zoosystematics and Evolution 94(2): 359-368. https://doi.org/10.3897/zse.94.28085
Figure 1 Bayesian phylogenetic tree for Spectrolebias costae sp. n., S. gracilis, S. semiocellatus and Nematolebias whitei. Numbers above nodes are support values, including posterior probabilities for the Bayesian analysis, followed by bootstrap percentages for the maximum likelihood analysis; *, means maximum support value and, bootstrap value below 50.
Figure 6 from: Costa WJEM, Amorim PF (2018) A new miniature cryptic species of the seasonal killifish genus Spectrolebias from the Tocantins River basin, central Brazil (Cyprinodontiformes, Aplocheilidae). Zoosystematics and Evolution 94(2): 359-368. https://doi.org/10.3897/zse.94.28085
Figure 6 Geographical distribution of Spectrolebias costae (black symbols) and S. gracilis sp. n. (white symbols). Stars indicate type localities.
Figure 5 from: Costa WJEM, Amorim PF (2018) A new miniature cryptic species of the seasonal killifish genus Spectrolebias from the Tocantins River basin, central Brazil (Cyprinodontiformes, Aplocheilidae). Zoosystematics and Evolution 94(2): 359-368. https://doi.org/10.3897/zse.94.28085
Figure 5 Spectrolebias gracilis sp. n., UFRJ 6441, paratype, female, 17.8 mm SL; Canabrava floodplains.
FIGURA 1 in A preliminary list of the Herpetofauna from termite mounds of the cerrado in the Upper Tocantins river valley
FIGURA 1: Collecting sites of termitaria in the State of Goiás.
FIGURA 2 in A preliminary list of the Herpetofauna from termite mounds of the cerrado in the Upper Tocantins river valley
FIGURA 2: Opening of a termite mound at Serra da Mesa site (Photo NJSJ).
Figures 22-30 from: de Freitas ÁJ.B, Bezerra CA.M, Meneses YC, Justo MCN, Viana DC, Cohen SC (2021) Three new species of Urocleidoides (Monogenoidea: Dactylogyridae) parasitizing characiforms (Actinopterygii: Characiformes) in Tocantins River, states of Tocantins and Maranhão, and new record for U. triangulus in Guandu River, state of Rio de Janeiro, Brazil. Zoologia 38: 1-11. https://doi.org/10.3897/zoologia.38.e65001
Figures 22-30 Urocleidoides tocantinensis sp. nov. from Psectogaster amazonica from Tocantins River: (22) copulatory complex, ventral view; (23) vagina; (24) ventral bar; (25) vaginal sclerite; (26) dorsal bar; (27) ventral anchor; (28) dorsal anchor; (29) hook pairs 2–4, 6, 7; (30) hook pairs 1, 5. Scale bars: 22, 23, 27, 28 = 20 µm, 24–26, 29 = 10 µm, 30 = 5 µm.
Figures 12-21 from: de Freitas ÁJ.B, Bezerra CA.M, Meneses YC, Justo MCN, Viana DC, Cohen SC (2021) Three new species of Urocleidoides (Monogenoidea: Dactylogyridae) parasitizing characiforms (Actinopterygii: Characiformes) in Tocantins River, states of Tocantins and Maranhão, and new record for U. triangulus in Guandu River, state of Rio de Janeiro, Brazil. Zoologia 38: 1-11. https://doi.org/10.3897/zoologia.38.e65001
Figures 12-21 Urocleidoides paratriangulus sp. nov. from Psectogaster amazonica from Tocantins River: (12) copulatory complex, ventral view; (13) vaginal sclerite; (14) vagina; (15, 16) dorsal bar; (17) ventral bar; (18) ventral anchor; (19) dorsal anchor, (20) hook pairs 1, 5; (21) hook pairs 2–4, 6, 7. Scale bars: 12 = 10 µm, 13–14 = 10 µm, 15–17 = 20 µm, 18–19 = 20 µm, 20 = 5 µm, 21 = 10 µm.
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