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27 results for “Acanthurus”
Spatial and Social Behavior of Acanthurus triostegus on Moorea (French Polynesia) and Palmyra Atoll (USA), 2017-2018
These data describe the schooling behavior of coral reef fish on Moorea (French Polynesia) and Palmyra Atoll (USA) in 2017 and 2018. Data are grouped into two sets of observations: 1) surveys measuring the abundance of reef fish and the proportion of those fish occurring in schools, and 2) behavioral observations including time spent grazing and GPS tracks of schooling and solitary Acanthurus triostegus.
Fig. 3 in Northernmost Record of the Surgeonfish Acanthurus nigros (Teleostei: Acanthuridae) from Minamidaitojima Island, Southern Japan
Fig. 3. Maximum likelihood tree based on partial sequence of the mitochondrial cytochrome b gene (754 bp) of Acanthurus nigros and A. nigroris. Numbers beside the internal branches indicate bootstrap probabilities (>95%) based on 1000 pseudoreplicates.
Fig. 2 in Northernmost Record of the Surgeonfish Acanthurus nigros (Teleostei: Acanthuridae) from Minamidaitojima Island, Southern Japan
Fig. 2. Distributional records of Acanthurus nigros. Star and circles indicate present and previous records (Randall et al. 2011), respectively.
Molecular data from "Between a rock and a dry place: phylogenomics, biogeography, and systematics of ridge-tailed monitors (Squamata: Varanidae: Varanus acanthurus complex)"
<p><strong>Phylogenetic_dataset.csv</strong>: Unfiltered DArTseq data used in phylogenetic analyses. Readable by 'dartR' (Gruber et al. 2018).</p> <p><strong>Population_dataset.csv</strong>: Unfiltered DArTseq data used in population-level analyses. Readable by 'dartR' (Gruber et al. 2018).</p> <p><strong>Reference.csv</strong>: Spreadsheet listing individuals included in molecular analyses. Includes vouchers, species, name of each sample in DArTseq data sets, and GenBank accession numbers (GB) for mitochondrial data. ABTC stands for Australian Biological Tissue Collection; AA and CCM for field numbers of uncatalogued specimens. Other collection acronyms follow Sabaj (2019). We refrain from assigning individuals that were not included in the molecular analyses to any given species.</p>
Figure 2 in First report of the yellowfin surgeonfish Acanthurus xanthopterus (Teleostei: Acanthuridae) in northern Peru
Figure 2. – Specimens of Acanthurus xanthopterus, E-1: 42 cm TL, Puerto Morin; E-2: 40 cm TL, Puerto Salaverry (La Libertad, Peru).
Figure 3 in Genetic, morphometric and meristic analyses of first Acanthurus monroviae specimens recorded in Maltese waters (Central Mediterranean)
Figure 3. – Second specimen of Acanthurus monroviae caught from the Grand Harbour breakwater on 13 October 2015 (Image by A. Vella, CBRGUoM).
Figure 2 in Genetic, morphometric and meristic analyses of first Acanthurus monroviae specimens recorded in Maltese waters (Central Mediterranean)
Figure 2. – First specimen of Acanthurus monroviae caught off St Thomas bay on 28 September 2013 (Image by A. Vella, CBRG-UoM).
Fig. 4 in Flight response of the barber surgeonfish, Acanthurus bahianus Castelnau, 1855 (Teleostei: Acanthuridae), to spearfisher presence
Fig. 4. Results of Ivlev's index showing the preference of Acanthurus chirurgus, Acanthurus coeruleus and Halichoeres poey; and the rejection of Stegastes fuscus and Sphoeroides spengleri to form groups with Acanthurus bahianus.
Fig. 3 in Flight response of the barber surgeonfish, Acanthurus bahianus Castelnau, 1855 (Teleostei: Acanthuridae), to spearfisher presence
Fig. 3. Flight Initiation Distance (cm) (mean ± S.D.) for Acanthurus bahianus in the main substrates found at the study site. Different letters means significant differences – p <0.05.
Fig. 2 in Flight response of the barber surgeonfish, Acanthurus bahianus Castelnau, 1855 (Teleostei: Acanthuridae), to spearfisher presence
Fig. 2. Flight Initiation Distance (cm) plotted against Group size (a), Body size (cm) (b), and Distance of shelter (cm) (c) for Acanthurus bahianus.
Figure 1 in First report of the yellowfin surgeonfish Acanthurus xanthopterus (Teleostei: Acanthuridae) in northern Peru
Figure 1. – Capture locations of the two specimens of Acanthurus xanthopterus, La Libertad, Peru.
Figure 1 in Genetic, morphometric and meristic analyses of first Acanthurus monroviae specimens recorded in Maltese waters (Central Mediterranean)
Figure 1. – Locations where specimens were collected and sighted.
Fig. 1 in Flight response of the barber surgeonfish, Acanthurus bahianus Castelnau, 1855 (Teleostei: Acanthuridae), to spearfisher presence
Fig. 1. Location of the study area at the Porto da Barra (black star), Salvador, Bahia, Brazil.
Fixed allele differences associated with the centromere reveal chromosome morphology and rearrangements in a reptile (Varanus acanthurus Boulenger)
<p>Chromosome rearrangements are often implicated with genomic divergence and are proposed to be associated with species evolution. Rearrangements alter the genomic structure and interfere with homologous recombination by isolating a portion of the genome. Integration of multi-platform next generation DNA sequencing technologies has enabled putative identification of chromosome rearrangements in many taxa, however, integrating these data sets with cytogenetics is still uncommon beyond model genetic organisms. Therefore, to achieve the ultimate goal for the genomic classification of eukaryotic organisms, physical chromosome mapping remains critical. The ridge-tailed goannas (<em>Varanus</em> <em>acanthurus</em> BOULENGER) are a group of dwarf monitor lizards comprised of several species found throughout Northern Australia. These lizards exhibit extreme divergence at both the genic and chromosomal levels. The chromosome polymorphisms are widespread extending across much of their distribution, raising the question if these polymorphisms are homologous within the <em>V. acanthurus</em> complex. We used a combined genomic and cytogenetic approach to test for homology across divergent populations with morphologically similar chromosome rearrangements. We showed that more than one chromosome pair was involved with the widespread rearrangements. This finding provides evidence to support <em>de novo</em> chromosome rearrangements have occurred within populations. These chromosome rearrangements are characterised by fixed allele differences originating in the vicinity of the centromeric region. We then compared this region with several other assembled genomes of reptiles, chicken and the platypus. We demonstrated that the synteny of genes in chordates remains conserved despite centromere repositioning across these taxa.</p>
Spatial and Social Behavior of Acanthurus triostegus on Moorea (French Polynesia) and Palmyra Atoll (USA), 2017-2018
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Fixed allele differences associated with the centromere reveal chromosome morphology and rearrangements in a reptile (Varanus acanthurus Boulenger)
Open the record for dataset details and reuse information.
FIGURE 2 in The goldrim surgeonfish (Acanthurus nigricans; Acanthuridae) from Diego Garcia, Chagos Archipelago: first record for the central Indian Ocean
FIGURE 2. Map of Diego Garcia, Chagos Archipelago, British Indian Ocean Territory. Asterisks (*) indicate approximate collecting localities.
FIGURE 1 in The goldrim surgeonfish (Acanthurus nigricans; Acanthuridae) from Diego Garcia, Chagos Archipelago: first record for the central Indian Ocean
FIGURE 1. Photographs of Acanthurus nigricans at Diego Garcia, Chagos Archipelago, British Indian Ocean Territory.
FIGURE 2 in Acanthurus tractus Poey, 1860, a valid western Atlantic species of surgeonfish (Teleostei, Acanthuridae), distinct from Acanthurus bahianus Castelnau, 1855
FIGURE 2. Relationships among Atlantic Acanthurus based on Bayesian analysis of mitochondrial CytB sequences. Numbers above branches correspond to posterior probabilities and those below branches are bootstrap support. Since our analysis did not include Pacific or Indian Ocean surgeonfishes, relationships in this tree (especially the position of long branches) may change with the addition of other taxa.
FIGURE 1 in Acanthurus tractus Poey, 1860, a valid western Atlantic species of surgeonfish (Teleostei, Acanthuridae), distinct from Acanthurus bahianus Castelnau, 1855
FIGURE 1. Underwater photographs of Acanthurus tractus (A to C) and Acanthurus bahianus (D to F). Note the clear and consistent difference in the coloration of the margin of the caudal and dorsal fins. Photographs by J. Randall (1A), D. Snyder (1B, 1C), O. Luiz-Junior (1D, 1E) and G. Allen (1F).
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Allen Brain Atlas
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OpenNeuro
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