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20 results for “Hoplobatrachus”
Fig. 2 in Low Level Genetic Diversity of Opalinid Morphotypes from the Digestive Tract of Hoplobatrachus rugulosus (Batrachia, Amphibia) in Thailand
Fig. 2. Scanning electron micrographs of opaline cells fixed in 2.5% glutaraldehyde. All opaline cells are covered with flagella throughout their body. (A) Opalinid cell with somatic ridges caused by the flagellar metachronal beating clearly defined in a spiral arrangement. (B) Fan-shaped opalinid cell with a broad anterior end and tapering posterior. (C) Uniformly elongated opalinid cell with a slightly tapering posterior end. (D) Fan-shaped opalinid cell of a similar morphotype to B but of a smaller size. Scale bar: A, C and D: 50 μm; B: 10 μm.
Fig. 1 in Low Level Genetic Diversity of Opalinid Morphotypes from the Digestive Tract of Hoplobatrachus rugulosus (Batrachia, Amphibia) in Thailand
Fig. 1. Light micrographs of opaline cells from life. (A) The opaline falx (arrow). (B) Multiple nuclei throughout the cell (arrowheads). A bend at the mid-body level is noticeable. (C) Flagella covering the body of the opaline cell (arrow). Several scores of nuclei are clearly visible (small circular clear whitish areas). (D) Prominent ridges signifying the metachronal beating of the flagella cover the opaline body in a random arrangement (arrow). (E) Flagella beating in a metachronal fashion (arrow). Opalinid cell nuclei (arrowheads). Scale bar: A and C: 100 μm; B, D and E: 50 μm.
Figure7 in Habitat-Based Breeding Strategies of Female Hoplobatrachus occipitalis (Anura: Dicroglossidae) from Daloa Department, Midwest of Côte d'Ivoire
Figure7. Regression between female size (SVL) and absolute fecundity (Fa) in Hoplobatrachus occipitalis from Fatiga and Zaliohouan in Daloa Department
Figure2 in Habitat-Based Breeding Strategies of Female Hoplobatrachus occipitalis (Anura: Dicroglossidae) from Daloa Department, Midwest of Côte d'Ivoire
Figure2. Size (SVL) frequency distribution of female Hoplobatrachus occipitalis from Fatiga and Zaliohouan in Daloa Department
Figure6 in Habitat-Based Breeding Strategies of Female Hoplobatrachus occipitalis (Anura: Dicroglossidae) from Daloa Department, Midwest of Côte d'Ivoire
Figure6. Spatial variability in egg diameter of female Hoplobatrachus occipitalis from Fatiga and Zaliohouan in Daloa Department
Figure5 in Habitat-Based Breeding Strategies of Female Hoplobatrachus occipitalis (Anura: Dicroglossidae) from Daloa Department, Midwest of Côte d'Ivoire
Figure5. Egg diameter frequency distribution of female Hoplobatrachus occipitalis from Fatiga and Zaliohouan in Daloa Department.
Figure4 in Habitat-Based Breeding Strategies of Female Hoplobatrachus occipitalis (Anura: Dicroglossidae) from Daloa Department, Midwest of Côte d'Ivoire
Figure4. Spatial variability in gonado-somatic index of female Hoplobatrachus occipitalis from Fatiga and Zaliohouan in Daloa Department
Figure3 in Habitat-Based Breeding Strategies of Female Hoplobatrachus occipitalis (Anura: Dicroglossidae) from Daloa Department, Midwest of Côte d'Ivoire
Figure3. Spatial variability in size (SVL) of female Hoplobatrachus occipitalis from Fatiga and Zaliohouan in Daloa Department
Figure8 in Habitat-Based Breeding Strategies of Female Hoplobatrachus occipitalis (Anura: Dicroglossidae) from Daloa Department, Midwest of Côte d'Ivoire
Figure8. Regression between female size (SVL) and egg diameter in Hoplobatrachus occipitalis from Fatiga and Zaliohouan in Daloa Department
Figure1 in Habitat-Based Breeding Strategies of Female Hoplobatrachus occipitalis (Anura: Dicroglossidae) from Daloa Department, Midwest of Côte d'Ivoire
Figure1. Location of study sites
FIGURE 11 in Aplectana hoplobatrachusia sp. nov. (Nematoda: Cosmocercidae) in Hoplobatrachus crassus (Jerdon, 1853) (Anura: Dicroglossidae) from Birbhum District, West Bengal, India
FIGURE 11. Aplectana hoplobatrachusia sp. nov. SEM micrograph of cloacal region of male, ventral view. Abbreviations Used: aap—adanal papillae, c—cloaca, mpap—median preanal papilla, prap—preanal papillae, psap—postanal papillae.
FIGURES 1–10 in Aplectana hoplobatrachusia sp. nov. (Nematoda: Cosmocercidae) in Hoplobatrachus crassus (Jerdon, 1853) (Anura: Dicroglossidae) from Birbhum District, West Bengal, India
FIGURES 1–10. Aplectana hoplobatrachusia sp. nov. 1. Anterior end of female, lateral view. 2. Anterior end of male, dorsal view. 3. Enlarged anterior end of female, dorsal view. 4. Posterior end of male, ventral view. 5. Cloacal region of male, ventral view. 6. Spicules (Isolated). 7. Posterior end of female, ventral view. 8. Vulvar region of female, lateral view, arrow points towards cephalic end. 9. Embryonated egg. 10. Larva (Isolated).
FIGURE 6 in A new species of genus Hoplobatrachus (Anura, Dicroglossidae) from the coastal belt of Bangladesh
FIGURE 6. (A) Map showing the approximate distribution areas of all Asian Hoplobatrachus species based on Frost et al. (2011) and Alam et al. (2008). (B) Bangladesh map showing the collecting localities of H. litoralis is indicated by (closed triangle) and, the collecting localities of H. tigerinus and H. crassus are indicated by (closed circle) and (closed square), respectively. Each locality was used for molecular analysis, and the boxed locality was used for morphology.
FIGURE 3 in A new species of genus Hoplobatrachus (Anura, Dicroglossidae) from the coastal belt of Bangladesh
FIGURE 3. (A) Scatterplot of individual discriminant scores on the first (CA1) and second canonical axes (CA2) for H. litoralis (circle), H. tigerinus (triangle), and H. rugulosus (rectangle). (B) Scatterplot of principal component 1 (PRN1) versus principal component 2 (PRN2) from the principal component analysis of H. litoralis (circle), H. tigerinus (triangle), and H. rugulosus (rectangle). In each species males were marked as solid and females were marked as open icons.
FIGURE 5 in A new species of genus Hoplobatrachus (Anura, Dicroglossidae) from the coastal belt of Bangladesh
FIGURE 5. Maximum likelihood (ML) tree based on the nucleotides sequence of 1078 bp of mitochondrial (16S + Cytb) genes with Euphlyctis cyanophlyctis and E. hexadactylus as out groups. The most parsimonious and Bayesian analyses reconstructed the same tree topology. Numbers near branches represent bootstrap support for ML and MP inferences, and Bayesian posterior probability (ML–BPs/MP–BPs/BPP). The scale bar represents 0.1 nucleotide substitutions per site. The superscript letters indicate that the 16S and Cytb data were taken from Alam et al. (2008) for constructing this tree. a) AB272594, AB274137; b) AB290412, AB274139; c) AB290417, AB290601; d) AB290414, AB290603; e) AB272596, AB274144; f) AB290413, AB290597; g) AB272599, AB274148; h) AB272600, AB274150; i) AB272601, AB274151 and j) AB272605, AB274163.
FIGURE 4 in A new species of genus Hoplobatrachus (Anura, Dicroglossidae) from the coastal belt of Bangladesh
FIGURE 4. Sound spectrograms showing advertisement call structure of H. litoralis. The same call analyzed by FlatTop (A) and Hamming window (B). Abscissa: time in s. Ordinate: frequency in kHz. The continuous broad band at about 2.5 kHz is chirps of an insect. The call of several male individuals of H. litoralis was recorded from Ukhia, Cox's Bazar district on 19 June, 2011 just after sunset and their voucher specimen numbers are involved in those of molecular analyses, but not specified.
FIGURE 2 in A new species of genus Hoplobatrachus (Anura, Dicroglossidae) from the coastal belt of Bangladesh
FIGURE 2. Holotype (IABHU 3993) of H. litoralis sp. nov. in life. (A) Dorsal view. (B) Ventral view. Scale bar = 25 mm.
FIGURE 1 in A new species of genus Hoplobatrachus (Anura, Dicroglossidae) from the coastal belt of Bangladesh
FIGURE 1. Holotype (IABHU 3993) of Hoplobatrachus litoralis sp. nov. after preservation in alcohol. (A) Dorsal aspect. (B) Ventral aspect. (C) Frontal aspect of head showing distinct black bands, compared with (D) that of H. tigerinus (IABHU 3940). (E) Coloration of upper arm of H. litoralis (IABHU 3993), compared with (F) that of H. tigerinus (IABHU 3940). (G) Foot of paratype (IABHU 3980), compared with (H) that of H. tigerinus (IABHU 3940). Scale bar = 10 mm.
Genome-wide SNP analysis of male and female rice field frogs, Hoplobatrachus rugulosus, supports a non-genetic sex determination system
<p>Sex determination systems (SDSs) in anurans are diverse and have undergone independent evolutionary transitions among species. The mode of sexual reproduction of the rice field frog (<i>Hoplobatrachus rugulosus</i>), an economically viable edible amphibian species, is not well known. Previous studies have proposed that threshold temperature conditions may determine sex in these frogs. To elucidate the SDS in <i>H. rugulosus</i>, we karyotyped 10 male and 12 female frogs, and performed fluorescence <i>in situ</i> hybridization combined with<b> </b>sequencing analyses using DArTseq™. Our results revealed a highly conserved karyotype with no sex chromosome heteromorphism, and the sequencing analyses did not identify any consistent sex-linked loci, supporting the hypothesis of temperature-dependent sex determination. The results of this study, and others, on SDSs in the rice field frog and related species also provides support for the theory that heteromorphic sex chromosomes may lead to an evolutionary trap that prevents variable SDSs. These findings add important information to the body of knowledge on <i>H. rugulosus</i> and are likely to have a significant impact on the productivity and economic success of rice field frog farming.</p>
Genome-wide SNP analysis of male and female rice field frogs, Hoplobatrachus rugulosus, supports a non-genetic sex determination system
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