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46 results for “Anthalona”
FIGURE 29 in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 29. Phylogenetic relationships and evolution in Anthalona gen. n. Parsimony analysis based on 14 morphological characters with Karualona as outgroup. The trees illustrate the hypothesis of a basal position of A. simplex n. sp. and A. brandorffi in Anthalona gen. n. Evolution of four characters plotted next to the tree. A. 50% Majority-rule consensus tree of 4598 trees with bootstrap values at nodes. The separate position of A. simplex n. sp. has high support. B. Strict consensus tree from six most parsimonious trees obtained by heuristic search, with values plotted from the 50% majority rule tree of these six (tree itself not shown). Evolution in the genus shows an increase of specialization/complexity of four synapomorphies, illustrated at the right (pores, IDL armature, sixth scraper of P2 and labral keel). The most primitive condition is found in A. simplex n. sp. Head pores in the genus show an increase of complexity in the lateral cosmaria (from simple unconstricted to involuted and constricted). Limb modifications for scraping, increase in specialization, from fine and similar setules in the basal taxa to strongly modified spines towards the crown taxa. Finally, denticles on the labral keel are absent in A. simplex n. sp. and A. brandorffi and appear in the genus together with stronger specialized scraping mechanisms. Their basal position within the genus is therefore confirmed by more than one character.
FIGURE 9. Alona harti harti ssp.n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 9. Alona harti harti ssp.n. from Southern Africa. Parthenogenetic females from Thalamakani River, Okavango Delta, Botswana. A. First limb, anterior view (ODL and IDL omitted). B. Idem, anterior view to show soft setae. C. Idem, IDL, ODL and accessory seta. D. Second limb. E. Idem, scraper six. F. Third limb, exopodite. G. Idem, setules omitted. H. Idem, endo-
FIGURE 16. Alona obtusa n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 16. Alona obtusa n. sp. Parthenogenetic females from pond at Palangka Raya University Campus, Borneo. A. Habitus. B. Body outline. C. Head shield, posterior margin with head pores. D. Posteroventral corner of valves (with ventral notch);
FIGURE 7 in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 7. Anthalona brandorffi (Sinev & Hollwedel, 2002) comb.nov. Parthenogenetic females from Crooked Tree Sanctuary lagoon, Belize (A–E) and from temporary dune pools at the Lençóis Maranhenses, Brazil (F–G). A. Habitus, lateral view. B. Head shield. C. First limb, inner (IDL) and outer distal lobe (ODL). D. Second limb with reduced scrapers, typical for A. brandorffi. E. Postabdomen, Belize specimen. F. Postabdomen, Lençóis specimen. G. Idem, basal spine on terminal claw.
FIGURE 19. Anthalona simplex n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 19. Anthalona simplex n. sp., parthenogenetic females from Katanga Region, DR Congo. A. First limb, anterior view, ODL and IDL not drawn. B. First limb, ODL, IDL and accessory seta. C. IDL setae and setulation. D. Second limb. E.
FIGURE 6. Anthalona acuta n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 6. Anthalona acuta n. sp., males from the Lençóis Maranhenses, Brazil. Leg. K. Van Damme. A. Habitus. B-C. Postabdomen. D. Detail first limb, with copulatory hook or clasper. Abbreviations: ch, copulatory hook, IDL, inner distal lobe, ODL, outer distal lobe.
FIGURE 8. Alona harti harti ssp.n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 8. Alona harti harti ssp.n. from Southern Africa. Parthenogenetic females from Thalamakani River, Okavango Delta, Botswana. A. Habitus, lateral view. B. Idem, body outline. C. Head pores. D. Head shield. E. Posteroventral valve corner. F.
FIGURE 4. Anthalona acuta n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 4. Anthalona acuta n. sp. from Lençóis Maranhenses, NE-Brazil, SEM. A. Inner (IDL) and outer distal lobe (ODL) setae of first limb. B. Postabdomen with detail of armature (below left). One of the specially modified setae on second antenna of A. acuta n. sp. can be seen here, but is broken off (ans).
FIGURE 3. Anthalona acuta n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 3. Anthalona acuta n. sp. from Lençóis Maranhenses, NE-Brazil (A–E) and Anthalona verrucosa (from same locality) (F), SEM. Carapace ornamentation, headshield of adult parthenogenetic females of. A. Adult parthenogenetic female, typical humpbacked shape for A. acuta n. sp. B. Pattern of tubercles seen dorsally. C. Dorsal detail of tubercles, posterior portion. D. Head shield (rostrum to the right) dorsally, with main head pores (MHp) and lateral pores (Lhp). E. Detail of head shield dorsally, with two connected major head pores in middle, all pores on an elevation. F. Detail of head pores of A. verrucosa ventrally, showing 3D configuration of the peculiar 8-shaped structures under the small pores, called "cosmaria" or "sacks".
FIGURE 2 in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 2. Comparison of head shields and head pores of sympatric Anthalona acuta n. sp. from type locality (F–I) and Anthalona verrucosa verrucosa (Sars, 1901) (A–E). Parthenogenetic females of A. verrucosa verrucosa were raised from dried mud from temporary dune pool at the Lençóis Maranhenses, Brazil. A, F. Complete head shields. B–E., G–I. Variation in head pore morphology. Note the differences in distances between large and small pores, especially in A. verrucosa (B–E).
FIGURE 5. Anthalona acuta n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 5. Anthalona acuta n. sp. Parthenogenetic females from temporary dune pools at the Lençóis Maranhenses, Brazil. A. First limb, anterior view, IDL and ODL omitted. B. IDL and ODL. C. Idem. D. Second limb. E. Idem, scraper eight
FIGURE 1. Anthalona acuta n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 1. Anthalona acuta n. sp. Parthenogenetic females from temporary dune pools at the Lençóis Maranhenses, Brazil. A. Habitus. B. Idem. C. General body outline. D. Front of head. E. Labral keel, lateral view. F. First antenna. G. Second
FIGURE 23 in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 23. Anthalona verrucosa verrucosa (Sars, 1901) = Alona verrucosa Sars, 1901, males (A–C) from the Lençóis Maranhenses, Brazil, Leg. K. Van Damme (from culture) and type series of "true (?)" Anthalona verrucosa verrucosa (Sars, 1901) = Alona verrucosa Sars, 1901, paralectotypes (D–L) from G.O. Sars Collection, F12337, Zool. Mus. Oslo (selected by Valdivia- Villar). A. Habitus male. B. Postabdomen male. C. Detail on first limb, with copulatory hook or clasper. D. Paralectotype, habitus parthenogenetic female. E.–F. Postabdomen. G. Labral keel. H. Second antenna. I. Head pores. J. First limb, ODL seta and IDL setae. K. Scrapers of second limb. L. Second limb, sixth scraper. Abbreviations: ch, copulatory hook, IDL, inner distal lobe, ODL, outer distal lobe.
FIGURE 15 in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 15. Anthalona mediterranea (Yalim, 2005) comb. nov. = Alona mediterranea Yalim, 2005. Males from Socotra Island, Yemen, Leg. K. Van Damme. A. Habitus. B. Postabdomen from river in Haghier Mountains. C. Postabdomen from Homhill. D. First antenna. E. First limb, copulatory hook. F. First limb, copulatory brush, IDL and ODL. G. First limb with frontal part and setules. H. Second limb. Abbreviations: ch, copulatory hook, gn, gnathobase, IDL, inner distal lobe, ODL, outer distal lobe.
FIGURE 18. Anthalona simplex n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 18. Anthalona simplex n. sp., parthenogenetic females from Katanga Region, DR Congo. A.–B. Habitus, lateral view (antennal setae not drawn). C. Body outline, lateral view. D. Posterior margin of head shield, including head pores. E. Labral
FIGURE 22 in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 22. Anthalona verrucosa verrucosa (Sars, 1901) comb. nov. = Alona verrucosa Sars, 1901. Parthenogenetic females from temporary dune pools at the Lençóis Maranhenses, Brazil, culture from dried mud. A. First maxilla. B. First limb, anterior
FIGURE 26. Anthalona gen. n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 26. Anthalona gen. n. pictorial key (adult parthenogenetic females). General characters of the genus are shown on
FIGURE 30 in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 30. Distribution of type localities of available names (A) and species in Anthalona gen. n. (B) considered valid after this study. Only confirmed records are shown. Horizontal line in B delimits distribution of Anthalona to the north, at 40°N. The genus is common in the Southern Hemisphere; most records have been regarded as Alona verrucosa and should now be evaluated.
FIGURE 28 in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines
FIGURE 28. Asian and African species of Anthalona gen. n., compared to Anthalona verrucosa (Sars, 1901). A. Anthalona verrucosa verrucosa (Sars, 1901), Lençóis Maranhenses, NE-Brazil, from culture, Leg. K. Van Damme. B. Anthalona obtusa n. sp., Borneo, Palangka Raya University Campus, Leg. H.J. Dumont. C. Anthalona harti harti n. ssp., Maun, Okavango Delta, Botswana, Leg. H.J. Dumont. D. Anthalona harti occidentalis n. ssp., Lake Télé, Mali, Leg. H.J. Dumont. E. Anthalona simplex n. sp. from Katanga, DR Congo, Leg. K. Martens. F. Anthalona mediterranea from Wadi Shawqah, Sharjah, UAE, raised from culture, Leg. K. Van Damme.
FIGURE 3 in Anthalona vandammei sp. nov. from Thailand, a sibling species of Neotropical Anthalona brandorffi (Sinev & Holwedell, 2002) (Cladocera: Anomopoda: Chydoridae)
FIGURE 3. Anthalona vandammei sp. nov. from Lake Kud-Thing, Bueng Kan Province, Thailand (type locality). Parthenogenetic female. A, setae of posterior portion of valves. B, posteroventral angle of valves. C, labrum and antennae. D, head shield. E, ventral side of head. F, head pores. G, posterior dorsal head pore. H, antenna.
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