| prevalence of campylobacter species in corncrakes (crex crex) in a reintroduction programme in the uk. | | 2008 | 18757906 |
| morphological and molecular characterization of eimeria paludosa coccidian parasite (apicomplexa:eimeriidae) in a dusky moorhen (gallinula tenebrosa, gould, 1846) in australia. | an eimeria species is described from a dusky moorhen (gallinula tenebrosa). sporulated oocysts (n = 40) are ovoid, with a pitted single-layered oocyst wall in young oocysts and a relatively smooth wall in the mature oocysts. oocyst wall was 1.0 µm thick, oocysts measured 17.3 × 13.3 (16.3-17.9 × 12.7-13.9) µm, oocyst length/width (l/w) ratio, 1.3. oocyst residuum was absent. a large polar granule was always observed in the centre of the micropyle and many small polar granules were observed when ... | 2014 | 25448356 |
| continental-scale patterns of pathogen prevalence: a case study on the corncrake. | pathogen infections can represent a substantial threat to wild populations, especially those already limited in size. to determine how much variation in the pathogens observed among fragmented populations is caused by ecological factors, one needs to examine systems where host genetic diversity is consistent among the populations, thus controlling for any potentially confounding genetic effects. here, we report geographic variation in haemosporidian infection among european populations of corncr ... | 2014 | 25553066 |
| do aggressive signals evolve towards higher reliability or lower costs of assessment? | it has been suggested that the evolution of signals must be a wasteful process for the signaller, aimed at the maximization of signal honesty. however, the reliability of communication depends not only on the costs paid by signallers but also on the costs paid by receivers during assessment, and less attention has been given to the interaction between these two types of costs during the evolution of signalling systems. a signaller and receiver may accept some level of signal dishonesty by choosi ... | 2014 | 25290527 |
| individually specific call feature is not used to neighbour-stranger discrimination: the corncrake case. | in various contexts, animals rely on acoustic signals to differentiate between conspecifics. currently, studies examining vocal signatures use two main approaches. in the first approach, researchers search for acoustic characteristics that have the potential to be individual specific. this approach yields information on variation in signal parameters both within and between individuals and generates practical tools that can be used in population monitoring. in the second approach, playback exper ... | 2014 | 25090457 |
| acoustic location of conspecifics in a nocturnal bird: the corncrake crex crex. | although the use of sounds in spatial orientation is widespread among animals, only a few groups advanced such specific adaptations as echolocation. in contrast, practically all animals and night-active species in particular, must occasionally orient themselves relative to invisible but audible objects such as a hidden rival or predator. in this study, i would like to determine the impact of locating which involves the use of acoustic parameters of sender's vocalisations by receivers and changes ... | 2014 | 24563580 |
| soft calls and broadcast calls in the corncrake as adaptations to short and long range communication. | because birds' acoustic signals function in antagonistic interactions between males and in female attraction, a majority of vocalisations are loud. in contrast, some birds, additionally produce soft vocalisations in escalated agonistic and sexual contexts. nevertheless, the relationship between the acoustic parameters of such signals and their function is not clear. here i investigate the sound transmission degradation properties of soft and broadcast (loud) calls in the corncrake using calls wi ... | 2013 | 23876392 |
| two new eimeria species parasitic in corncrakes (crex crex) (gruiformes: rallidae) in the united kingdom. | in this study we describe 2 new species of coccidia (apicomplexa: eimeriidae) parasites isolated from the feces of corncrake (crex crex) (gruiformes: rallidae), bred in captivity in the u.k. oocysts of eimeria crecis n. sp. were approximately spherical and measured 15.3 μm (13-18) × 14.3 (12-16), providing an oocyst shape index of 1.1. a micropyle and oocyst residuum were absent, but a polar granule was present. oocysts of eimeria nenei n. sp. were ellipsoidal and measured 23.6 (21-26) × 18.1 (1 ... | 2013 | 23347228 |
| functionally similar acoustic signals in the corncrake (crex crex) transmit information about different states of the sender during aggressive interactions. | we combined playback experiments with hormonal manipulations to study the information content of acoustic signals during aggressive interactions between male corncrakes. during territorial conflicts, fights are uncommon, but the intensity of signaling usually increases. such signals can be temporally and contextually associated with many aggressive behaviors and most likely function as threats or as indicators of the sender's quality or motivation. however, such correlational data are unsatisfac ... | 2011 | 21983228 |
| [ganguleterakis kuchtai sp. nova (nematoda) from the host crex crex in slovakia (czechoslovakia)]. | | 1968 | 5666261 |
| [plagiorchis elegans (rud., 1802) occurring in a new host crex crex l]. | | 1965 | 5856646 |
| a nocturnal rail with a simple territorial call eavesdrops on interactions between rivals. | the behaviour of most animals has evolved in a communication network environment, in which signals produced by senders are perceived by many intended and unintended receivers. in this study, we tested whether the corncrake (crex crex), a nocturnal rail species with innate (non-learned) calls, is able to eavesdrop on the interactions of conspecific males and how this eavesdropping affects subsequent responses by the eavesdropper to territorial intrusion. in the first step, simulated aggressive or ... | 2018 | 29775465 |
| eimeria spp. in captive-reared corncrakes (crex crex): results of a genescan assay consistent with high prevalence of infection and extra-intestinal life stages. | eimeria crecis and eimeria nenei have been detected in association with enteric disease ("coccidiosis") in the corncrake (crex crex: family rallidae, order gruiformes). both parasite species are common in apparently healthy free-living corncrakes, but captive-bred juvenile birds reared for reintroduction appeared particularly susceptible to clinical coccidiosis. we investigated the occurrence and relative pathogenicity of these eimeria species in this juvenile corncrake population and developed ... | 2018 | 29532683 |