| a comparative analysis of invaded sequences from group ia phospholipase a(2) genes provides evidence about the divergence period of genes groups and snake families. | two phospholipase a(2) (pla(2)) genes classified into group ia were cloned from the genomic library of the sea snake laticauda semifasciata. eight clones were obtained by pcr cloning procedure from genomic dna of laticauda laticaudata (four clones) and laticauda colubrina (four clones). the genes were 3.6-4.4kbp in length. intron and exon organization of the group ia pla(2) genes was the same as that of naja sputatrix group ia pla(2) genes (four exons and three introns). there were two kinds of ... | 2002 | 12076640 |
| phylogenetic relationships within laticaudine sea snakes (elapidae). | the sea snake subfamily laticaudinae consists of a single genus with eight named species, based on morphological characters. we used microsatellite and mitochondrial dna (mtdna) data to clarify the adaptive radiation of these oviparous sea snakes in the south pacific, with special reference to new caledonia and vanuatu. a mitochondrial dna data set (nd4 gene 793 bp) was obtained from 345 individuals of the five species of laticauda sp. sea snakes endemic to the region. maximum likelihood and bay ... | 2011 | 21414416 |
| occurrence of anisakis (nematoda: anisakidae) larvae in unusual hosts in southern hemisphere. | nematodes belonging to the genus anisakis are important parasites due to their abundance in seafood and health impacts on humans. in the present study anisakis larvae were found in a number of uncommon hosts including the grey petrel, procellaria cinerea, the little penguin, eudyptula minor, blue-lipped sea krait, laticauda laticaudata and spinner shark, carcharhinus brevipinna. morphological examination showed nematodes in these animals are anisakis larval type i. genetic characterisation sugge ... | 2017 | 28797592 |
| effects of oceanic salinity on body condition in sea snakes. | since the transition from terrestrial to marine environments poses strong osmoregulatory and energetic challenges, temporal and spatial fluctuations in oceanic salinity might influence salt and water balance (and hence, body condition) in marine tetrapods. we assessed the effects of salinity on three species of sea snakes studied by mark-recapture in coral-reef habitats in the neo-caledonian lagoon. these three species include one fully aquatic hydrophiine (emydocephalus annulatus), one primaril ... | 2012 | 22710931 |
| comparison of freshwater discrimination ability in three species of sea kraits (laticauda semifasciata, l. laticaudata and l. colubrina). | three species of amphibious sea kraits (laticauda spp.) require drinking freshwater to regulate water balance. the extent of terrestriality is known to differ among them. species with higher extent of terrestriality would drink freshwater accumulated on land, whereas less terrestrial species would rely totally on freshwater that runs into the sea. consequently, we predicted that the latter species might have a better ability to follow the flow of freshwater or lower salinity water in the sea tha ... | 2013 | 23224248 |
| properties and biosynthesis of a neurotoxic protein of the venoms of s snakes laticauda laticaudata and laticauda colubrina. | 1. a neurotoxic protein similar to erabutoxins a and b of laticauda semifasciata was isolated in crystalline form from the venoms of laticauda laticaudata and laticauda colubrina. the name ;laticotoxin a' is proposed. 2. laticotoxin a is homogeneous by cm-cellulose column chromatography, disc electrophoresis and ultracentrifugation and by terminal amino acid analyses. 3. laticotoxin a consists of 62 amino acid residues. the molecular weight by ultracentrifuging is 6520. 4. the minimal 50% lethal ... | 1969 | 5346371 |
| geographic genetic structure in two laticaudine sea kraits, laticauda laticaudata and laticauda semifasciata (serpentes: elapidae), in the ryukyu-taiwan region as inferred from mitochondrial cytochrome b sequences. | the ryukyu-taiwan region is an island arch with intervening waters of varying distances and depths. this study examines the geographic genetic structure of two sympatric sea kraits, laticauda laticaudata and l. semifasciata, in the region, to infer factors affecting the extent of dispersal and other biogeographical traits of these amphibious reptiles. sequence analyses of the mitochondrial cytochrome b gene revealed four and 16 haplotypes for l. laticaudata (136 individuals) and l. semifasciata ... | 2013 | 23915156 |
| kleptothermy: an additional category of thermoregulation, and a possible example in sea kraits (laticauda laticaudata, serpentes). | lacking the capacity for thermogenesis, most ectotherms inhabiting thermally heterogeneous environments rely instead upon exploiting that ambient heterogeneity. in many cases they maintain body temperatures within a narrow range despite massive spatial and temporal variation in ambient conditions. reliance on diverse thermal opportunities is reflected in specific terms for organisms that bask in sunlight to regulate their temperature (heliotherms), or that press their bodies against warm substra ... | 2009 | 19656862 |
| microsatellite loci for laticaudine sea kraits. | we report the development of 11 polymorphic microsatellite loci (three dinucleotides, one trinucleotide and seven tetranucleotides) that are useful for the detection of population subdivision and the study of philopatry, migration and mating biology in laticaudine sea kraits laticauda saintgironsi and laticauda laticaudata. five loci are highly polymorphic and amplify reliably in both l. saintgironsi and l. laticaudata. an additional three are useful in l. saintgironsi and another three in l. la ... | 2008 | 21586002 |
| molecular evolution and diversification of snake toxin genes, revealed by analysis of intron sequences. | the genes encoding erabutoxin (short chain neurotoxin) isoforms (ea, eb, and ec), lsiii (long chain neurotoxin) and a novel long chain neurotoxin pseudogene were cloned from a laticauda semifasciata genomic library. short and long chain neurotoxin genes were also cloned from the genome of laticauda laticaudata, a closely related species of l. semifasciata, by pcr. a putative matrix attached region (mar) sequence was found in the intron i of the lsiii gene. comparative analysis of 11 structurally ... | 2003 | 12957382 |
| amino acid sequence of the alpha- and beta-globin chains of the hiroo sea snake (laticauda laticaudata). | we determined the hemoglobin complete amino acid sequences of the hiroo sea snake (laticaudia laticuada) from the intact globin chain, enzymatically digested fragments, and chemical cleavage fragments to analyze molecular evolution for classification of the sea snake. the hiroo sea snake has two hemoglobin components, hb-i and hb-ii, which contain different alpha- and beta-chains, respectively. this is the first report of the complete primary structure of a snake hemoglobin. the sequences were c ... | 2002 | 12018623 |
| population history and genomic admixture of sea snakes of the genus laticauda in the west pacific. | speciation in the open ocean has long been studied, but it remains largely elusive what factors promote or inhibit speciation in such an open environment. marine amniotes, which evolved from terrestrial ancestors, provide valuable opportunities for studying speciation in the ocean because of their evident aquatic origins. sea snakes are phylogenetically related to terrestrial elapid snakes and consist of two monophyletic groups (hydrophiini and laticaudini). these two groups migrated from land t ... | 2020 | 33160037 |
| demographic analyses of marine and terrestrial snakes (elapidae) using whole genome sequences. | the question of whether spatial aspects of evolution differ in marine versus terrestrial realms has endured since ernst mayr's 1954 essay on marine speciation. marine systems are often suggested to support larger and more highly connected populations, but quantitative comparisons with terrestrial systems have been lacking. here, we compared the population histories of marine and terrestrial elapid snakes using the pairwise sequentially markovian coalescent (psmc) model to track historical fluctu ... | 2020 | 33170980 |
| correction to: development of 21 polymorphic microsatellite markers for the black-banded sea krait, laticauda semifasciata (elapidae: laticaudinae), and cross-species amplification for two other congeneric species. | unfortunately, one of the co-author's family name has been incorrectly published in the original online publication. the correct family name should be tsai. | 2018 | 29934805 |
| development of 21 polymorphic microsatellite markers for the black-banded sea krait, laticauda semifasciata (elapidae: laticaudinae), and cross-species amplification for two other congeneric species. | the genus laticauda (reptilia: elapidae), commonly known as sea kraits, is venomous marine amphibious snakes distributed throughout the south and southeast asian islands and mostly found in coastal waters. to facilitate genetic studies, we have developed microsatellite loci for l. semifasciata using the 454 gs-flx pyrosequencing technique. a total of 65,680 sequences containing a minimum of five repeat motifs were identified from 451,659 reads. among 80 loci containing more than nine repeat unit ... | 2018 | 29892836 |