The ichthyoplankton assemblage structure in the Yangtze Estuary was analyzed based on four springs in 1999, 2001, 2004 and 2007 in order to provide detailed characterizations of the ichthyoplankton assemblage in springs, examine the long-term dynamics of spring ichthyoplankton assemblages, and evaluate the influence of environmental factors on the spatial distribution and inter-annual variation...

We used mitochondrial DNA and microsatellite loci to examine the phylogeographic patterns of the most broadly distributed lizard in eastern North America, the five-lined skink (Eumeces fasciatus). We infer that longitudinal phylogeographic patterns in E. fasciatus are consistent with fragmentation due to refugial and post-glacial dynamics, but that deep divergences within the species imply hist...

PURPOSE To isolate and characterize the rhodopsin cDNA from the fish, Astyanax fasciatus, and to determine the effect of tyrosine 261 on its spectral tuning. METHODS The rhodopsin cDNA was cloned using reverse transcription-polymerase chain reaction amplification and then sequenced. A mutant, Y261F, was generated by site-directed mutagenesis. Both wild type and mutant were transiently express...

Genealogical data are an important source of evidence for delimiting species, yet few statistical methods are available for calculating the probabilities associated with different species delimitations. Bayesian species delimitation uses reversible-jump Markov chain Monte Carlo (rjMCMC) in conjunction with a user-specified guide tree to estimate the posterior distribution for species delimitati...

Because larvae of cerambycid beetles feed within woody plants, they are difficult to detect, and are readily transported in lumber and other wooden products. As a result, increasing numbers of exotic cerambycid species are being introduced into new regions of the world through international commerce, and many of these species pose a threat to woody plants in natural and managed forests. There i...

One hundred and ninety-nine victims of snakebite hospitalized at Maharat Nakhon Ratchasima Hospital between 1898 and 1991 were studied. The male:female ratio was 1.9:1 and their mean age (+/- SD) was 30.0 +/- 18.6 years. The most common of victims were farmers and laborers. Dead snakes were identified as follows: 72 were Trimeresurus sp. (36.2%), 36 were Naja kaouthia (17.6%), 4 were Bungarus f...

The gills of fish have a great external contact surface and are particularly sensitive to chemical and physical changes in the aquatic environment. The aim of this study was to examine the histopathologic alterations in the gills of Astyanax fasciatus and Cyanocharax alburnus and to determine if there is a correlation between the severity of the alterations and environmental degradation and if ...

The shortjawed (SJ) kokopu (Galaxias postvectis ) is rare and listed as category A conservation status by DOC and as indeterminate (status not resolved) by IUCN. It may be in decline given that there is substantial habitat loss and modification. If existence of SJ kokopu is to be maintained, information regarding its presence within whitebait runs both in terms of timing and geography, is essen...