MARCUS V. DOMINGUESARFANG DIAMANKAANTOINE PARISELLE
19页
查看更多>>摘要：Neodiplectanum Mizelle & Blatz, 1941 is resurrected and emended for monogenoids from the gills of gerreid hosts from Western Atlantic: Neodiplectanum wenningeri from Eucinostomus gula (Quoy & Gaimard) [type-host] and Gerres cire-neus (Walbaum); N. magnodiscatum (Fuentes Zambrano, 1997) n. comb. (syn. Diplectanum magnodiscatum Fuentes Zambrano, 1997) from Eugerres plumieri (Cuvier); Neodiplectanum gatunense (Mendoza Franco, Roche & Torchin, 2008) n. comb. (syn. D. gatunense Mendoza Franco, Roche & Torchin, 2008) from Eugerres brasilianus (Cuvier); N. mexicanum (Mendoza Franco, Roche & Torchin, 2008) n. comb. (syn. D. mexicanum Mendoza Franco, Roche & Torchin, 2008) from Diapterus rhombeus (Cuvier). Neodiplectanum is characterized for diplectanids with male copulatory organ and accessory piece non-articulated, heavily sclerotised vaginal atrium, ventral anchors with deep root twice as long as superficial root, dorsal anchors with conspicuous superficial and deep roots and squamodiscs with spinelike rodlets in the posterior rows. Darwinoplectanum n. gen. is proposed for species with male copulatory organ articulated to the accessory piece, vaginal opening sinistral, marginal or submarginal; non-sclerotised vagina atrium; and egg ovate with short filament. Here, we described three new species of Darwinoplectanum n. gen. from the gills of gerreid hosts from the Eastern and/or Western Atlantic: Darwinoplectanum figueiredoi n. gen. n. sp. [type species] from Eucinostomus argenteus Baird & Girard; D. amphiatlanticus n. gen. n. sp. from Eucinostomus melanopterus (Bleecker)[Type host] from Africa, and E. argenteus from Brazil; and D. pilittae n. gen. n. sp. from G. cireneus.
查看更多>>摘要：Ongoing surveys and systematic work focused on the Pilbara region in Western Australia have revealed the existence of numerous unrecognized species of reptiles. Here we describe Underwoodisaurus seorsus sp. nov., a new species similar to U. milii, butdiffering in its relatively plain dorsal and head patterns with only sparsely scattered pale tubercles, a much more gracile build, including longer snout, limbs and digits, smaller and more numerous fine scales on the dorsum, and the enlarged tubercleson the tail tending not to form transverse rows. The new species is known from few specimens and has only been encountered at mid elevations in the Hamersley Ranges, widely separated from the closest populations of U. milii in the northern Goldfields andShark Bay in Western Australia. Given its rarity and small (potentially relictual) distribution this species may be of conservation concern.
LORENA ELIZABETH MARTINEZLUCIANO JAVIER AVILACRISTIAN HERMAN FULVIO PEREZDANIEL ROBERTO PEREZ...
16页
查看更多>>摘要：We describe a new species of the Liolaemus bibronii complex. The new species differs from other members of the bi-bronii-alticolor group in color pattern, coloration and squamation. Liolaemus cyaneinotatus is endemic to the Auca Mahuida volcano in northwestern Patagonia.
查看更多>>摘要：The taxonomic status of the species Lepus melainus, the Manchurian black hare, is intensely debated. It is considered either as a valid species or a black color morph of L. mandshuricus, the Manchurian hare. Herein, we evaluate the validity of L. melainus using 24 morphological traits and two nuclear DNA loci (TG=466bp; MGF=592bp) from newly collected specimens. Except for winter pelage, we fail to discover significant morphological differences between L. melainus and/,, mandshuricus. Analysis of thenuclear DNA sequences reveals lack of reciprocal monophyly between L. mandshuricus and L. melainus, as they form one single clade with high bootstrap support; in addition, morphometric and morphological analyses found no specific differentiation betweenforms corresponding to L. mandshuricus or L. melainus. Together with the fact that the range of L. melainus is completely within that of L. mandshuricus, our study supports the recognition of L. melainus as a melanistic morph and junior synonym of L. mandshuricus.
PAUL D. TAYLORANDREA WAESCHENBACHWAYNE K. FLORENCE
11页
查看更多>>摘要：Cyclostomes are an ancient order of marine bryozoans with a fossil record extending back over 450 million years into the Ordovician. The current taxonomy of both fossil and modern cyclostomes is based almost entirely on skeletal characters but newly available sequence data are beginning to reveal rampant convergence of some of them. An unusual combination of skeletal characters in the South African cyclostome Tennysonia stellata Busk, 1867 has made this genus difficult to classify. After revising thetaxonomy of Tennysonia, we use almost complete small and large ribosomal subunits (ssrDNA and IsrDNA) to demonstrate its close phylogenetic affinity with the tubuliporine genus Idmidronea (family Tubuliporidae) with which it shares a similar colony form, despite the presence of skeletally open kenozooids between the autozooids, reminiscent of cerioporine cyclostomes such as Favosipora. The spaces between the transverse rows of autozooidal apertures, occupied by exterior autozooidal frontal walls in Idmidronea, are occupied by kenozooids in Tennysonia, thereby maintaining the spacing between lophophores necessary for efficient suspension feeding. Sympatric colonies of T. stellata with narrow and broad branches are identical or almost identical on the basis of ssrDNA and IsrDNA sequences, respectively, suggesting within-species ecophenotypic plasticity in this aspect of colony form.
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