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Fig. 2 in Diet of Hemigrammus marginatus (Characiformes: Characidae) in the Upper Contas River, Diamantina Plateau (Bahia, Brazil)

Fig. 2. Living specimen of Hemigrammus marginatus Ellis, 1911 collected during the study (standard length = 32 mm).

Fig. 1 in Diet of Hemigrammus marginatus (Characiformes: Characidae) in the Upper Contas River, Diamantina Plateau (Bahia, Brazil)

Fig. 1. Map of the Contas River basin, in the south-centre region of the Bahia state (Brazil), with its main drainages and indication of the two collection sites: Contas River (circle) and Água Suja River (triangle).

Fig. 3 in Diet of Hemigrammus marginatus (Characiformes: Characidae) in the Upper Contas River, Diamantina Plateau (Bahia, Brazil)

Fig. 3. Collection sites of Hemigrammus marginatus Ellis, 1911 in the Upper Contas River basin: Contas River (above) and Água Suja River (below).

Fig. 4 in Diet of Hemigrammus marginatus (Characiformes: Characidae) in the Upper Contas River, Diamantina Plateau (Bahia, Brazil)

Fig. 4. Plots of the first two aXes resulting from the Non-Metric Multidimensional Scaling (NMDS) ordination of individuals of Hemigrammus marginatus Ellis, 1911 from drainages of the Upper Contas River, Diamantina Plateau, Brazil, based on the Feeding IndeX (IAi) of the food categories consumed. The triangles correspond to the groups of individuals according to collection sites (Contas and Água Suja rivers), campaigns (dry and rainy seasons), and length classes (classes 1, 2 and 3), and the circles correspond to the food categories. For each graph, the respective fish group was highlighted as a filled triangle and the diameter of the circles is proportional to the IAi values observed for each food category (Mc, microcrustaceans; In, insects; FA, filamentous algae; Dt, detritus).

opencc-by-4.0Jun 2020View details →

FIGURE 1 in Phylogenetic relationships of the neon tetras Paracheirodon spp. (Characiformes: Characidae: Stethaprioninae), including comments on Petitella georgiae and Hemigrammus bleheri

FIGURE 1 | Maximum Likelihood phylogenetic reconstruction of Stethaprioninae sensu Mirande (2018) using 16S ribosomal RNA and cytochrome C oxidase subunit I concatenated dataset after inclusion of Paracheirodon simulans and Petitella georgiae. Bootstrap values (≥ 75%) are shown near the nodes. Neon tetras are highlighted in red, and rummy-nose tetras are highlighted in blue.

opencc-zeroJan 2024View details →

Linked collectors and determiners for: Taxonomic study of Moenkhausia cotinho Eigenmann, 1908 and Hemigrammus newboldi (Fernández-Yépez, 1949) with the description of two new species of Moenkhausia (Teleostei: Characiformes: Characidae).

Natural history specimen data linked to collectors and determiners held within, "Taxonomic study of Moenkhausia cotinho Eigenmann, 1908 and Hemigrammus newboldi (Fernández-Yépez, 1949) with the description of two new species of Moenkhausia (Teleostei: Characiformes: Characidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/d56e60ac-9956-4908-a6a4-21e344ee0f41">https://bionomia.net/dataset/d56e60ac-9956-4908-a6a4-21e344ee0f41</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/d56e60ac-9956-4908-a6a4-21e344ee0f41">https://gbif.org/dataset/d56e60ac-9956-4908-a6a4-21e344ee0f41</a>. Formatted as a Frictionless Data package.

Fig. 7 in Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Fig. 7. Type locality of Hemigrammus tocantinsi, Brazil, Goiás, Cavalcante, rio das Pedras, Fazenda Córrego Fundo.

Fig. 6 in Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Fig. 6. Geographic distribution of Hemigrammus tocantinsi in rio das Almas drainage, upper rio Tocantins basin, Brazil. Rectangle = municipality of Cavalcante, GO; stars = localities of occurrence of H. tocantinsi; lozenge = type-locality. Arrow shows the direction of rio das Almas flow.

Fig. 5 in Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Fig. 5. Hemigrammus tocantinsi: (a) pectoral-fin length and (b) pelvic-fin length as function of standard length in males and females.

Fig. 3 in Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Fig. 3. Caudal squamation: (a) Hemigrammus tocantinsi, paratype, UFRGS 9907, 27.3 mm SL and (b) Hemigrammus marginatus, MCP 43324, 32.4 mm SL. Scale bars = 1 mm.

Fig. 2 in Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Fig. 2. Hemigrammus tocantinsi, paratype, female, UFRGS 11300, 27.4 mm SL. Scanning electronic micrograph of lower and upper jaws, left side. Scale bar = 1 mm. Maxillary tooth a little dislocated inwardly.

Fig. 8 in Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Fig. 8. Hemigrammus tocantinsi, paratype, spermatozeugmata, UFRGS 11300, 25.1 mm SL. Scale bar = 2 µm.

Fig. 1 in Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Fig. 1. Hemigrammus tocantinsi, holotype, male (few days after fixation), MCP 44444, 28.2 mm SL, rio das Pedras, Fazenda Córrego Fundo, municipality of Cavalcante, Goiás State, Brazil.

Fig. 8 in Comparison of spermiogenesis in the externally fertilizing Hemigrammus erythrozonus and the inseminating Corynopoma riisei (Teleostei: Characiformes: Characidae)

Fig. 8. Mature spermatozoon in C. riisei. A - Longitudinally sectioned spermatozoon with mitochondria running alongside nucleus and forming the mitochondrial region; glycogen rosettes (g) are present among mitochondria. B-E. Progressively more posterior transverse sections of spermatozoa. B- Tip of nuclear region containing the proximal centriole (pc). C-Region of distal centriole (dc). D - Anterior part of flagellum within cytoplasmic canal (cc) in the concavity of the nucleus. E - Cytoplasmic canal between two mitochondria (m). F-H. Transverse sections of mitochodrial region showing flagellum within the cytoplasmic canal (cc), surrouded by cytoplasmic sleeve (cs) and free. Scale bar for all figures 0.5 µm. f – flagellum, N-nucleus.

Fig. 6. Intermediate, elongated spermatids. A in Comparison of spermiogenesis in the externally fertilizing Hemigrammus erythrozonus and the inseminating Corynopoma riisei (Teleostei: Characiformes: Characidae)

Fig. 6. Intermediate, elongated spermatids. A - Longitudinally sectioned spermatid with elongate nucleus containing highly granular chromatin and flagellum running within cytoplasmic canal. Scale bar 0.5 µm. B - inset: Arrangement of proximal and distal centrioles with intercentriolar lamellated body. Scale bar 0.25 µm. C - Transverse sections of tip of spermatids containing proximal and distal centrioles and anterior part of flagellum. Scale bar 0.5 µm D - Transverse sections of the middle portion of nucleus with mitochondria located around the nucleus. E - Posterior portion of nucleus showing numerous mitochondria, and flagellum contained within cytoplasmic canal. F - Flagellum within the cytoplasmic canal of the mitochondrial region. Scale bar 0.5 µm. cc – cytoplasmic canal, cs – cytoplasmic sleeve, dc – distal centriole, f – flagellum, ilb – intercentriolar lamellated body, m – mitochondrion, N – nucleus, pc – proximal centriole, v – vesicles.

Fig. 4 in Comparison of spermiogenesis in the externally fertilizing Hemigrammus erythrozonus and the inseminating Corynopoma riisei (Teleostei: Characiformes: Characidae)

Fig. 4. Fractured part of testis in Corynopoma riisei with SEM. A - Spermatocysts containing cells in different stages of spermatogenesis; Scale bar 25 µm. B - Arrangement of late spermatids within spermatocyst before spermiation. Scale bar 50 µm. f – flagellum, sg-spermatogonia; sc-spermatocytes; sd-spermatids.

opencc-by-4.0Apr 2020View details →

Fig. 49. Hemigrammus rodwayi, 26.5 in The non-native freshwater fishes of Singapore: an annotated compilation

Fig. 49. Hemigrammus rodwayi, 26.5 mm SL, Kranji Reservoir.

Fig. 9 in Comparison of spermiogenesis in the externally fertilizing Hemigrammus erythrozonus and the inseminating Corynopoma riisei (Teleostei: Characiformes: Characidae)

Fig. 9. Drawing of spermatozoon in C. riisei.

Fig. 5 in Comparison of spermiogenesis in the externally fertilizing Hemigrammus erythrozonus and the inseminating Corynopoma riisei (Teleostei: Characiformes: Characidae)

Fig. 5. (next column) Sagittal and transverse sections of early

Fig. 3 in Comparison of spermiogenesis in the externally fertilizing Hemigrammus erythrozonus and the inseminating Corynopoma riisei (Teleostei: Characiformes: Characidae)

Fig. 3. Drawings of frontally (A) and sagitally (B) sectioned spermatozoon in H. erythrozonus.