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88 results for “Rhamphichthyidae”
Fig. 2 in First chromosomal analysis of Gymnorhamphichthys britskii: the remarkable lowest diploid value within the family Rhamphichthyidae (Gymnotiformes)
Fig. 2. Gymnorhamphichthys britskii sampled in the Dourado stream, Mato Grosso do Sul State, Brazil.
Fig. 5 in Spatial and temporal distribution of Gymnorhamphichthys rondoni (Gymnotiformes: Rhamphichthyidae) in a long-term study of an Amazonian terra firme stream, Leticia - Colombia
Fig. 5. Heat map showing the probability of finding Gymnorhamphichthys rondoni individuals within any quadrant of the grid located in a terra firme stream in Leticia, Amazonas. White represents zero probability. Dark blue represents the lowest probability for quadrants in which G. rondoni rested during the day (1.45%) while red represents the highest probability (36.2%) of finding an individual resting within a given quadrant. Notice that individuals were never found in the white quadrants, which dried out during low water periods.
Fig. 4 in Spatial and temporal distribution of Gymnorhamphichthys rondoni (Gymnotiformes: Rhamphichthyidae) in a long-term study of an Amazonian terra firme stream, Leticia - Colombia
Fig. 4. Monthly distribution of Gymnorhamphichthys rondoni within the grid in the Yahuarcaca terra firme stream in Leticia, Amazonas. The continuous line represents the maximum stream width reached during high water months, and the dashed line the minimum stream width reached in low water months. a. to m. Each sketch represents a sampling month and each number represents the total number of G. rondoni individuals found during five to six days at each quadrant for that particular month.
Fig. 3 in Spatial and temporal distribution of Gymnorhamphichthys rondoni (Gymnotiformes: Rhamphichthyidae) in a long-term study of an Amazonian terra firme stream, Leticia - Colombia
Fig. 3. The EOD pulse in the weakly electric fish Gymnorhamphichthys rondoni. EOD waveform shows four distinctive phases of alternating polarity (Left). Pictures are showing the lateral, dorsal and ventral view of G. rondoni ICN-MHN 6169 (Right). © Institute of Natural Sciences, Faculty of Sciences, Universidad Nacional de Colombia.
Fig. 6 in Spatial and temporal distribution of Gymnorhamphichthys rondoni (Gymnotiformes: Rhamphichthyidae) in a long-term study of an Amazonian terra firme stream, Leticia - Colombia
Fig. 6. Water conductivity and its effects on distance to nearest neighbors and the daily ratio of departure from a random distribution (R). a. The nearest neighbor distance between all individuals of Gymnorhamphichthys rondoni found within the grid for all sampling days during all thirteen months (linear regression, n= 1375; p= 0.45; r2= 0.0004). The daily ratio of departure from a random distribution (R) within the grid for all sampling days during all thirteen months for b. Exponential Model (r2 = 0.09; F = 6.4; p = 0.014) and c. Power Model (r2 = 0.07; F = (1, 62) (1, 62) 4.9; p = 0.03).
Fig. 2 in Spatial and temporal distribution of Gymnorhamphichthys rondoni (Gymnotiformes: Rhamphichthyidae) in a long-term study of an Amazonian terra firme stream, Leticia - Colombia
Fig. 2. Sampling site in the Yahuarcaca terra firme stream in Leticia, Amazonas. a. Image during low water levels. b. Image with high water levels after a local rain.
Fig. 1 in Spatial and temporal distribution of Gymnorhamphichthys rondoni (Gymnotiformes: Rhamphichthyidae) in a long-term study of an Amazonian terra firme stream, Leticia - Colombia
Fig. 1. Geographical position of the sampling site in the Yahuarcaca terra firme stream close to Leticia, Amazonas in Colombia. The picture shows a panoramic view of the sampling site.
Fig. 9 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 9. Pectoral girdle of left side of Iracema caiana (MZUSP 49205, 235 mm SL; pectoral fin rays digitally removed). (a) Lateral view; (b) Midsagittal view. Anterior to left. Scale bar is 5 mm. Abbreviations: pt+scl = posttemporal + supracleithrum; cl = cleithrum; co = coracoid; sc = scapula; mco = mesocoracoid; and ra = radials.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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