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Fig. 6. Karyotype from a Central Site L. spenceri unsexed juvenile, animal 1. A representative karyotype demonstrates the L. spenceri 2n in The critically endangered species Litoria spenceri demonstrates subpopulation karyotype diversity
Fig. 6. Karyotype from a Central Site L. spenceri unsexed juvenile, animal 1. A representative karyotype demonstrates the L. spenceri 2n = 26 karyotype and DAPI negative areas in the long arms of chromosomes 9 and 11.
Fig. 5. Karyotype from a Northern Site L. spenceri unsexed adult. A representative karyotype demonstrates the L. spenceri 2n in The critically endangered species Litoria spenceri demonstrates subpopulation karyotype diversity
Fig. 5. Karyotype from a Northern Site L. spenceri unsexed adult. A representative karyotype demonstrates the L. spenceri 2n = 26 karyotype and a DAPI negative area in the long arm of chromosome 9.
Fig. 4. Chromosomes 9 and 11 from different L. spenceri populations. Three representative chromosomes from each animal demonstrate a in The critically endangered species Litoria spenceri demonstrates subpopulation karyotype diversity
Fig. 4. Chromosomes 9 and 11 from different L. spenceri populations. Three representative chromosomes from each animal demonstrate a highly conserved DAPI negative region in the long arms of chromosome 9. A DAPI negative region is observed in the long arm of chromosome 11, but only in the Central Site juveniles and in only one matched chromosome of the Northern Site x Central Site tadpole hybrid. Arrows indicate the chromosome 11 DAPI negative region. Asterisks indicate the paired submetacentric chromosome 11 matched pair of the Northern Site x Central Site tadpole hybrid.
Fig. 3. Karyotype from a Southern Site L. spenceri adult male. A representative karyotype demonstrates the L. spenceri 2n in The critically endangered species Litoria spenceri demonstrates subpopulation karyotype diversity
Fig. 3. Karyotype from a Southern Site L. spenceri adult male. A representative karyotype demonstrates the L. spenceri 2n = 26 karyotype and a DAPI negative area in the long arm of chromosome 9.
Fig. 2. Karyotype from a Southern Site L. spenceri adult female. A representative karyotype demonstrates the L. spenceri 2n in The critically endangered species Litoria spenceri demonstrates subpopulation karyotype diversity
Fig. 2. Karyotype from a Southern Site L. spenceri adult female. A representative karyotype demonstrates the L. spenceri 2n = 26 karyotype and a DAPI negative area in the long arm of chromosome 9.
Fig. 1 in The critically endangered species Litoria spenceri demonstrates subpopulation karyotype diversity
Fig. 1. Phenotypes of L. spenceri frogs and site location. (A) Adult frog from the South Site (1). (B) Adult frog from the North Site (2). (C) A juvenile frog from the Central Site (3). (D) Site identification within the L. spenceri population range. N = north. Phenotypes are only examples and not necessarily representative.
FIGURE 4 in Chromosome analysis in Saccodon wagneri (Characiformes) and insights into the karyotype evolution of Parodontidae
FIGURE 4 | Saccodon wagneri metaphase plates after A. Double FISH with 5S rDNA (green-thin arrows) and 18S rDNA (red-thick arrows) probes; B. FISH using telomeric probes showing positive signals in the terminal positions of all chromosomes.
FIGURE 3 in Chromosome analysis in Saccodon wagneri (Characiformes) and insights into the karyotype evolution of Parodontidae
FIGURE 3 | Saccodon wagneri C-banded metaphases. A. Female; B. Male. The arrows indicate the sex chromosomes.
FIGURE 2 in Chromosome analysis in Saccodon wagneri (Characiformes) and insights into the karyotype evolution of Parodontidae
FIGURE 2 | Saccodon wagneri Giemsa karyotypes. A. Female; B. Male. Sex chromosomes are indicated. The NOR-carrying chromosomes, after silver staining, are boxed.
Figure 1 in Belostoma estevezaeRibeiro and Alecrim (Heteroptera: Belostomatidae) reveals a new karyotype complement inBelostoma Latreille from mitotic metaphases
Figure 1. Belostoma estevezae and chromosomes. (A) Male of B. estevezae with eggs laid on its back. (B) Metaphase with conventional staining (2% Giemsa). (C) Male karyotype of B. estevezae with pairs 14 and 15 formed by microchromosomes. (D) C-banding in metaphase. (E) C-banding in chromosomes of B. estevezae. In (B) and (D) the arrows indicate the sex chromosomes X and Y and the arrow heads indicate the microchromosomes. Scale bar: 20 mm (A); 0,005 mm (B), (C), (D) and (E).
Figure 7 in Comparison of natural histories and karyotypes of two closely related ant-eating spiders, Zodarion hamatum and Z. italicum (Araneae, Zodariidae)
Figure 7. Behaviour of sex chromosome during spermatogonial mitosis and meiosis. (A, F) Zodarion italicum; (B– E, G–I) Z. hamatum. (A) Early spermatogonial prophase; (B) premeiotic interphase (two prominent heteropycnotic bodies represent segments of chromosome X); (C) pachytene (note that sex chromosome does not exhibit heteropycnosis); (D) late pachytene; (E) diplotene (*ring bivalent with two chiasmata); (F) metaphase I (*bivalent exhibiting precocious division); (G) anaphase I; (H) prometaphase II; (I) anaphase II. Arrow identifies sex chromosome. Scale bars: 10 mm.
Figure 4 in Comparison of natural histories and karyotypes of two closely related ant-eating spiders, Zodarion hamatum and Z. italicum (Araneae, Zodariidae)
Figure 4. Number of attacks for four ant species (pooled for females and juveniles of Zodarion italicum and Z. hamatum). For description see Figure 3.
Figure 5 in Comparison of natural histories and karyotypes of two closely related ant-eating spiders, Zodarion hamatum and Z. italicum (Araneae, Zodariidae)
Figure 5. Mimics and the putative model (from left to right): Zodarion hamatum, Lasius emarginatus and Z. italicum. Scale bar: 1 mm.
Figure 2 in Comparison of natural histories and karyotypes of two closely related ant-eating spiders, Zodarion hamatum and Z. italicum (Araneae, Zodariidae)
Figure 2. Phenology of study species. (A) Seasonal activity of adult individuals of Zodarion italicum (pitfall-trap data, n56266); (B) proportion of adults in Z. hamatum (grey bar) and Z. italicum (empty bar) during season (hand collections, n5121),? represents missing data; (C) seasonal variability in proportion of males (grey bar) and females (empty bar) of Z. italicum (pitfall-trap data, n56266).
Figure 1 in Comparison of natural histories and karyotypes of two closely related ant-eating spiders, Zodarion hamatum and Z. italicum (Araneae, Zodariidae)
Figure 1. Distribution of Zodarion hamatum and Z. italicum in Europe. Distribution of Z. italicum in southern Italy is not shown.
FIGURE 1. Snake chromosomes. A in Karyotypes of Coralsnakes (Reptilia: Elapidae) from the Western Hemisphere, with Comments on Intraspecific Variation and Centric Fission of Chromosomes
FIGURE 1. Snake chromosomes. A. Karyotype of Micruroides euryxanthus (2n = 34, with 14 macrochromosomes and 20 microchromosomes), AMNH R-109413, male. B. Karyotype of Micrurus tener (2n = 32 in males, 33 in females, with 16 macrochromosomes and 16 microchromosomes in males, 17 microchromosomes in females), AMNH R-110075, female illustrated with ZW1W2 sex chromosome heteromorphism. Scale bar = 10 µm.
Fig. 4 in Karyotypes Of The Snorkel Snail Genera Pterocyclos And Rhiostoma (Prosobranchia: Cyclophoridae)
Fig. 4. Karyotype of Pterocyclos sp., P. blandi, Rhiostoma asiphon, R. chupingense, R. hainesi, R. housei (from central Thailand, localities 14 to 17), R. housei (from southern Thailand, locality 18), R. jalorensis, and R. samuiense (as indicated in Fig. 3), showing the metacentric (not labelled), submetacentric (sm), subtelocentric (st), telocentric (t), and acentric (a) chromosomes.
Fig. 1. A in Karyotypes Of The Snorkel Snail Genera Pterocyclos And Rhiostoma (Prosobranchia: Cyclophoridae)
Fig. 1. A map of Thailand showing the collection localities of the Pterocyclos and Rhiostoma specimens used in this study. Locations for each indicated number are given in Table 2.
Fig. 3 in Karyotypes Of The Snorkel Snail Genera Pterocyclos And Rhiostoma (Prosobranchia: Cyclophoridae)
Fig. 3. Mitotic chromosomes of: A, Pterocyclos sp.; B, P. blandi; C, Rhiostoma asiphon; D, R. chupingense; E, R. hainesi; F, R. housei (from central Thailand, localities 14–17); G, R. housei (from southern Thailand, locality 18); H, R. jalorensis; and I, R. samuiense.
Fig. 2 in Karyotypes Of The Snorkel Snail Genera Pterocyclos And Rhiostoma (Prosobranchia: Cyclophoridae)
Fig. 2. Shell characteristics of: A, Pterocyclos sp.; B, P. blandi; C, Rhiostoma asiphon; D, R. chupingense; E, R. hainesi; F, R. housei (from central Thailand, localities 14–17); G, R. housei (from southern Thailand, locality 18); H, R. jalorensis; and I, R. samuiense.
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