| cryptosporidium spp. in pet birds: genetic diversity and potential public health significance. | to characterize the prevalence and assess the zoonotic transmission burden of cryptosporidium species/genotypes in pet birds in henan, china, 434 fecal samples were acquired from 14 families of birds in pet shops. the overall prevalence of cryptopsoridium was 8.1% (35/434) by the sheather's sugar flotation technique. the cryptosporidium-positive samples were analyzed by dna sequence analysis of the small subunit (ssu) rrna gene. three cryptosporidium species and two genotypes were identified, in ... | 2011 | 21557938 |
| the genus biuterina fuhrmann, 1902 (cestoda, paruterinidae) in the old world: redescriptions of three species from palaearctic passeriformes. | the syntypes of biuterina passerina fuhrmann, 1908 from alauda arvensis and galerida cristata (passeriformes, alaudidae) from an unknown locality are redescribed. b. fuhrmanni schmelz, 1941 is redescribed on the basis of its syntypes from emberiza aureola from china; its type-material contains, in addition to a scolex and pre-gravid and gravid fragments of biuterina, fragments of mature proglottides from a dilepidid cestode, which were erroneously used in the original description. specimens, whi ... | 2004 | 14739677 |
| the role of the nasal passages in the water economy of crested larks and desert larks. | condensation of water vapor in the exhaled air stream as it passes over previously cooled membranes of the nasopharynx is thought to be a mechanism that reduces respiratory water loss in mammals and birds. such a mechanism could be important in the overall water economy of these vertebrates, especially those species occupying desert habitats. however, this hypothesis was originally based on measurements of the temperature of exhaled air (tex), which provides an estimate of water recovered from e ... | 2006 | 10068625 |
| global warming and body mass decline in israeli passerine birds. | global warming may affect the physiology, distributions, phenology and adaptations of plants and animals. in israel, minimum summer temperatures increased by an average of 0.26 degrees c per decade during the second half of the 20th century. bergmann's rule predicts that, in warm-blooded animals, races from warm regions are smaller than races from cold regions. numerous studies have reported general correlations between body mass in fossil animals and independently established palaeoclimatic cha ... | 2001 | 11370968 |
| from inter-specific behavioural interactions to species distribution patterns along gradients of habitat heterogeneity. | the strength of the behavioural processes associated with competitor coexistence may vary when different physical environments, and their biotic communities, come into contact, although empirical evidence of how interference varies across gradients of environmental complexity is still scarce in vertebrates. here, i analyse how behavioural interactions and habitat selection regulate the local distribution of steppeland larks (alaudidae) in a gradient from simple to heterogeneous agricultural land ... | 2013 | 22806401 |
| interspecific interactions drive cultural co-evolution and acoustic convergence in syntopic species. | 1. antagonistic interactions have been favourite subjects of studies on species co-evolution, because coexistence among competing species often results in quantifiable character displacement. a common output for competitive interactions is trait divergence, although the opposite phenomenon, convergence, has been proposed to evolve in some instances, for example in the communication behaviour of species that maintain mutually exclusive territories. 2. i use here experimental and observational evi ... | 2012 | 22260650 |
| phenotypic variation in galerida larks in morocco: the role of history and natural selection. | the relative influences of history, natural selection and hybridization in shaping phenotypic variation in closely related taxa is a crucial issue in current evolutionary biology. in this study, we used as a model two sibling but paradoxically highly variable species of larks (galerida theklae and galerida cristata) of morocco to separate the impacts of these evolutionary forces. in the former species, variation is manifested mainly in colouration, while in the latter, variation also encompasses ... | 2005 | 16202098 |
| [intermediate calls in the crested lark (galerida cristata l.). example for the superimposition of behaviour characteristics]. | | 1974 | 4456899 |
| history of the crested lark in the mediterranean region as revealed by mtdna sequences and morphology. | the crested lark has a very complex taxonomy, partly as a result of a strong variation in plumage ground color seemingly linked with environmental factors. however, large variations in body size and bill shape further complicate the situation in the maghreb. in this paper, we first present a set of hypotheses to explain patterns of morphological variation around the mediterranean sea. a phylogeographical analysis covering all major biogeographical areas in the species' range is then performed to ... | 2006 | 16473529 |