FRED PARKERTIM HAWKESIAN MORRISSTEPHEN J. RICHARDS...
50页
查看更多>>摘要：Embryonic development in fifteen Australopapuan microhylid frogs of the genera Austrochaperina, Cophixalus and Oreophryne is described. These frogs have direct development during which the embryo develops to a minute froglet within the jelly capsule.Development of the operculum, presence of external gills, tail structure, gut development and timing of forelimb emergence are described and compared with the direct-developing eleutherodactylid Eleutherodactylus coqui from Puerto Rico and three Australian myobatrachid genera with direct development (Arenophryne, Metacrinia and Myobatrachus). We comment on those differences that likely reflect examples of convergent and divergent evolution and heterochrony.
查看更多>>摘要：The xanthid subfamily Polydectinae Dana, 1851, is recorded for the first time in the Philippines, being represented by four species: Polydectus cupulifer (Latreille, in Milbert, 1812), Lybia tessellata (Latreille, in Milbert, 1812), L. leptochelis (Zehntner, 1894), and L, hatagumoana Sakai, 1961. The taxonomy of L. hatagumoana is discussed at length, and a new genus, Tunebia gen. nov., established for it and the allied L. tutelina Tan &Ng, 1994, from New Caledonia. The new genus is diagnosed and compared with other polydectine genera.
查看更多>>摘要：Tonlesapia amnica, a new species of dragonet lacking a first dorsal fin, is described from the Mekong River delta in southern Vietnam. It can be distinguished from its sole congener, T. tsukawakii, in having the infraorbital canal extending beyond (vs. not reaching) ventral margin of orbit, a more slender body (7.2-13.5% SL vs. 14.3-15.0) and caudal peduncle (4.4-5.2% SL vs. 5.1-6.3), a smaller eye (6.5-8.3% SL vs. 8.7-9.2) and more dorsal-fin rays (9-10 vs. 8).
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