8 resultados para Magnolia

em Deakin Research Online - Australia


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Egg cases from nine skate species occurring in Tasmanian waters were examined and measured. A species-specific identification key is provided for eight of these species. The key was developed primarily from fresh egg cases dissected from the oviduct, although specimens collected from the ocean floor or found dried on the beach were also used to test the key. Egg cases for the ninth species could not be included because the only egg case pair recovered was partially fomled. A diagnosis of the posterior end of this egg case is provided.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

B. K. Nadeau in 1955 identified as Thaumatocypris ostracodes from the middle Miocene Glenample Clay of Victoria, southeastern Australia. Nadeau's collection of Ostracoda from the Glenample Clay was located in the collections of the Museum of Victoria, Melbourne. Examination of that material indicates that the Glenample Clay specimens attributed by Nadeau to Thaumatocypris belong to Polycope sanctacatherinae Whatley & Downing 1983. As a result, it is concluded that Thaumatocypris has not been collected in the Miocene of Australia. Furthermore, in a broader  biostratigraphic/palaeobiogeographic context, the result confirms that no member of the Suborder Halocypridina has been reported so far from the Tertiary Period.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Recent molecular genetic work, combined with morphological comparisons, of Malagasy members of the bat genus Miniopterus (Family Miniopteridae), has revealed several cryptic species. Based on new specimens and associated tissues, we examine patterns of variation in the recently described species M. petersoni, the holotype of which comes from extreme southeastern Madagascar, and for which specimens from more northerly portions of eastern Madagascar were noted to show some morphological divergence from typical M. petersoni. On the basis of morphological and genetic (cytochrome b) characters we described a new species, M. egeri sp. nov. This taxon also shows bioacoustical differences from M. petersoni. Miniopterus egeri is widely distributed in the eastern portion of Madagascar across an elevational range from near sea level to 550 m. The specific status of moderately small Miniopterus from Montagne d'Ambre in the far north remains to be determined.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Subfossil head capsules of Simuliidae larvae have been recovered from swamps on Tubuai and Raivavae of the Austral Islands, and Atiu and Mangaia of the southern Cook Islands. For Tubuai and Raivavae it is likely that the simuliids are extinct, but a single simuliid species is extant on nearby Rurutu. For Atiu and Mangaia, extant simuliids have not been reported, but are known on Rarotonga. Well-preserved head capsules indicate that the Cook Islands subfossils are those of Simulium (Inseliellum) teruamanga Craig and Craig, 1986. For the Austral Islands, the simuliid from Tubuai is considered a variant of Simulium (Inseliellum) rurutuense Craig and Joy, 2000. That from Raivavae is morphologically distinct and is described here as a new species, Simulium (Inseliellum) raivavaense Craig and Porch. Humans arrived in Eastern Polynesia ca. 1,000 years ago resulting in the widespread destruction of lowland forest and conversion of wetlands to agriculture with implied consequences for the indigenous biota of these habitats. Here we consider that one such result was loss of freshwater aquatic biodiversity.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

A new species of penicillate millipede, from genus Monographis (Diplopoda: Polyxenidae), was collected from Trang Bom and Dinh Quan, within the Dong Nai province, southern Vietnam. Taxonomic characteristics of the genus Monographis Attems, 1907, were used to formally describe this new species. Sensilla of the 6th antennal article and claw structures of Monographis dongnaiensis were compared with those of M. tamoyoensis, M. yunnanensis and M. queenslandicus. Genomic DNA of M. dongnaiensis was compared with the DNA of other species within the genus Monographis. Monographis dongnaiensis is confirmed as the ninth member of the genus Monographis and named Monographis dongnaiensis after the collection site Dong Nai province in Vietnam.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Recent molecular genetic work, combined with morphological comparisons, on Malagasy members of the bat genus Miniopterus (Family Miniopteridae), has uncovered a number of cryptic species. Based on recently collected specimens and associated tissues, we examine patterns of variation in M. aelleni, the holotype of which comes from Ankarana in northern Madagascar. Using molecular genetic (mitochondrial cytochrome b) and morphological characters we describe a new species, M. ambohitrensis sp. nov. In northern Madagascar, M. ambohitrensis and M. aelleni are allopatric, but occur in relatively close geographical contact (approximately 40 km direct line distance) with M. ambohitrensis found at Montagne d'Ambre in montane humid forest and M. aelleni sensu stricto at Ankarana in dry deciduous forest. Morphologically, this new taxon is differentiated from M. aelleni based on pelage coloration, external measurements, craniodental differences, and tragus shape. Comparisons using 725 bp of cytochrome b found a divergence of 1.1% within M. aelleni sensu stricto, 0.8% within M. ambohitrensis, and 3.3% between these two clades. The two sister species do not demonstrate acoustical differences based on recordings made in a flight cage. Miniopterus ambohitrensis is known from four localities in the northern and central portions of Madagascar, all from montane regions and across an elevational range from about 800 to 1600 m; its calculated "Extent of occurrence" is 15,143 km2. It is possible that this species is at least partially migratory.