| calbindin d28k in mammalian intestinal absorptive cells: immunohistochemical evidence. | calbindin d28k and d9k are two cytosolic calcium-binding proteins abundant in intestinal absorptive cells which appear to play a role in calcium translocation. until today, calbindin d28k was found in avian and reptilian absorptive cells but not in mammalian ones. we have described the presence of calbindin d28k-immunoreactivity in intestinal absorptive cells of pig and jerboa (jaculus jaculus). pig calbindin d28k-immunoreactive absorptive cells were prominent in duodenum, they were scattered al ... | 1990 | 2085694 |
| studies on zoonotic cutaneous leishmaniasis among a group of temporary workers in north sinai governorate, egypt. | leishmaniasis (cutaneous, cl. and visceral, vl.) is an increasing public health problem in the mediterranean region. from a practical point of view, zcl is the most important and distributed form in egypt. consequently, it was aimed to study the status of zcl among a group of temporary workers in north sinai governorate. the results showed that (i) rodent populations are more or less common in al arish city (rattus rattus and r. norvegicus), bir lehfan (gerbillus pyramidum) and abo oegela (g. py ... | 1995 | 7602176 |
| babesia infection in rodents trapped in riyadh region, saudi arabia, with a general discussion. | species of babesia are intraerythrocytic protozoal parasites of many species of mammalians in all parts of the world where the tick-vectors are found. babesiosis or piroplasmosis causes considerable damage to the livestock and other animals. human babesiosis has been documented in many countries. consequently, babesiosis is a zoonotic disease of medical, veterinary and economic importance. in this study, a total of 310 rodents of different species were trapped from different areas in riyadh regi ... | 1994 | 8169440 |
| studies on the interrelation between rodents and their ectoparasitic acarines in riyadh region, saudi arabia. | the ectoparasitic acarines of commensal and wild rodents collected from various areas in riyadh region were four species of mites (laelaps nutalli, ornythonyssus bacoti, cheyletus eruditus and articholaelaps glasgowi), and two species of ticks. (immature stages) rhipicephalus spp. and hyalomma spp. in urban areas the highest infestation rate by mites was 49.9% on rattus rattus followed by 18.5% on rattus norvegicus. the highest rat-mite index was 2.3 on r. rattus followed by 1.3 on r. norvegicus ... | 1993 | 8308342 |
| studies on the ectoparasites (fleas and lice) on rodents in riyadh and its surroundings, saudi arabia. | a survey was conducted on rodents from the riyadh city and surroundings. two species of fleas, xenopsylla cheopis and ctenocephalides felis felis together with polyplax spinulosa were collected. the highest infestation rate by both fleas occurred on rattus rattus followed by rattus norvegicus and mus musculus. females of r. rattus and r. norvegicus were more infested by fleas than males. on the other hand, meriones spp., gerbillus spp., jaculus jaculus and acomys dimidiatus were infested with x. ... | 1993 | 8308348 |
| zoonotic cutaneous leishmaniasis: reservoir host and insect vector in north sinai, egypt. | cutaneous leishmaniasis (zcl) is a protozoan disease well documented not only in egypt, but in nearly all the east mediterranean countries. sinai peninsula was a sparsely populated area where sporadic cases of zcl were reported with the reconstruction of sinai and people coming in and out, it was indicated to study the status of zcl in north sinai governorate, the reservoir host(s) and insect vector(s) in sinai. in the present study, the six species of rodents were trapped from areas or nearby a ... | 2007 | 18383786 |
| the lesser egyptian jerboa, jaculus jaculus: a unique rodent model for evolution and development. | tetrapods that have evolved the ability to run or bound at great speeds over long distances have repeatedly converged on specific morphological limb adaptations, including the loss of lateral digits, elongation of limb segments, and fusion of individual elements. many of the more familiar cursorial animals, such as horses and deer, are large and do not lend themselves well to experimental embryonic analyses. however, a group of lesser-known bipedal rodents, the three-toed jerboas, has become an ... | 2011 | 22135653 |
| histochemical distribution of acid mucopolysaccharides and some active transport enzymes in the lingual glands of jaculus jaculus l. (dipodidae, mammalia). | from examination of the structural data obtained for the tongue of rodent jaculus jaculus, it has been possible to deduce that it is lined with filiform papillae in the dorsal epithelium and that it has a rich glandular apparatus consisting of anterior serous glands which are located immediately after the apex and composed of epithelial cells arranged in a single synctitial layer, and both nucous and seromucous acini (weber's glands) in the posterior portion of the tongue on the lateral sides an ... | 2001 | 93383 |
| c-banding karyotype and relationship of the dipodids allactaga and jaculus (mammalia: rodentia) in egypt. | the c-banding karyotype of the jerboas allactaga tetradactyla, jaculus jaculus jaculus, and jaculus orientalis was described and interspecific relationships were discussed. despite the conservation of a relatively small amount of c-heterochromatin located at the centromeric region of some chromosomes in all karyotypes, a striking loss of c-heterochromatin was clearly observed in j. orientalis. c-bands were totally absent in 33 of the 48 chromosomes of j. orientalis, compared to only 7 for j.j.ja ... | 2004 | 15521644 |
| a comparative analysis of the rate of meiosis, chiasma frequency and terminalization in the jerboas allactaga and jaculus (rodentia: dipodidae) in egypt. | the rate of seven meiotic stages (zygotene-pachytene, diplotene-diakinesis, metaphase i, anaphase i, metaphase ii, anaphase ii, and quartet) was studied in the jerboas jaculus jaculus jaculus, jaculus orientalis, and allactaga tetradactyla, chiasma frequency and terminalization being examined only in j. jaculus and j. orientalis, and compared with the previous data concerning a. tetradactyla. significant differences in the rate of meiosis, frequency of bivalent types, and frequency of interstiti ... | 2001 | 11987448 |
| molecular assessment of hepatozoon (apicomplexa: adeleorina) infections in wild canids and rodents from north africa, with implications for transmission dynamics across taxonomic groups. | parasites play a major role in ecosystems, and understanding of host-parasite interactions is important for predicting parasite transmission dynamics and epidemiology. however, there is still a lack of knowledge about the distribution, diversity, and impact of parasites in wildlife, especially from remote areas. hepatozoon is a genus of apicomplexan parasites that is transmitted by ingestion of infected arthropod vectors. however, alternative modes of transmission have been identified such as tr ... | 2014 | 25050803 |
| phylogenetic analysis of dipus sagitta and euchoreutes naso (rodentia: dipodidae) based on the mitochondrial genomes. | dipus sagitta and euchoreutes naso are both monotypic genus, both of them belong to the family of dipodidae, and e. naso is an endangered species (en) defined by the world conservation union. the length of its complete mitochondrial sequence of d. sagitta and e. naso is 16,664 bp and 16,705 bp, respectively. phylogenetic analysis displayed that d. sagitta, jaculus jaculus, and e. naso were classified into the same cluster. this result was consistent with that of primary morphological taxonomy. ... | 2016 | 26029878 |
| monthly abundance of rodent and their ectoparasites in newly settled areas, east of lakes, ismailia governorate, egypt. | rodents and their ectoparasites were studied inside and outside houses in the newly settled areas, east of lakes, ismailia governorate, egypt. forty traps per month in each of the two sides were used for collecting rodent during 2009. from 221 rodent were collected from inside houses; mus musculus n=115 (52.04%), rattus rattus. frugivorous n=54 (24.43%), r. r. alexandrinus n=40 (18.10%) and r. norvegicus n=12 (5.43%). from 177 rodent were collected from outside houses; m musculus n=4 (2.3%), r. ... | 2013 | 24260816 |
| vertical leaping mechanics of the lesser egyptian jerboa reveal specialization for maneuverability rather than elastic energy storage. | numerous historical descriptions of the lesser egyptian jerboa, jaculus jaculus, a small bipedal mammal with elongate hindlimbs, make special note of their extraordinary leaping ability. we observed jerboa locomotion in a laboratory setting and performed inverse dynamics analysis to understand how this small rodent generates such impressive leaps. we combined kinematic data from video, kinetic data from a force platform, and morphometric data from dissections to calculate the relative contributi ... | 2017 | 28680452 |
| the comparative gastrointestinal morphology of jaculus jaculus (rodentia) and paraechinus aethiopicus (erinaceomorpha). | jaculus jaculus (lesser egyptian jerboa) and paraechinus aethiopicus (desert hedgehog) are small mammals which thrive in desert conditions and are found, among others, in the arabian peninsula. jaculus jaculus is omnivorous while p. aethiopicus is described as being insectivorous. the study aims to describe the gastrointestinal tract (git) morphology of these animals which differ in diet and phylogeny. the gits of j. jaculus (n = 8) and p. aethiopicus (n = 7) were weighed, photographed, and the ... | 2016 | 26968578 |
| the complete mitochondrial genome of stylodipus telum (rodentia: dipodidae) and its phylogenetic analysis. | stylodipus telum belongs to the genus stylodipus in the subfamily of dipodinae. we got its complete genome first and it is 16,696 bp in length, the heavy strand contains 31.0% a, 13.8% g, 27.3% c, 27.9% t. among them, protein-coding genes take up approximately 67.90% of the complete sequence. trees constructed through phylogenetic analysis showed s. telum and jaculus jaculus were clustered in one branch belonging to the family dipodinae. this conclusion was identical to the former result by the ... | 2016 | 26024139 |
| large spatial scale of the phenotype-environment color matching in two cryptic species of african desert jerboas (dipodidae: jaculus). | we tested the camouflage hypothesis, or the linkage between animal (saharan rodent) and habitat coloration, on the largest geographical scale yet conducted. we aimed to determine whether phenotypic variation is explained by micro-habitat variation and/or genetic polymorphism to determine 1) the strength of linkage between fur color and local substrate color, and 2) the divergence in fur coloration between two genetic clades, representing cryptic species, throughout the complete range of the afri ... | 2014 | 24714509 |
| husbandry and breeding of the lesser egyptian jerboa, jaculus jaculus. | the lesser egyptian jerboa, jaculus jaculus, is the ideal jerboa species for use as a laboratory model system. as a member of the most derived clade of three-toed jerboas, it shows all of the specialized characteristics for bipedalism, including loss of the lateral digits and fusion and elongation of the metatarsals. it is a small rodent, weighing ∼55 g as an adult, and it does not hibernate through the winter as is common with many other jerboa species. it is the first dipodoid rodent whose gen ... | 2011 | 22135654 |
| karyotypic variation in two species of jerboas jaculus jaculus and jaculus orientalis (rodentia, dipodidae) from tunisia. | the karyotypes of the lesser egyptian jerboa jaculus jaculus and the greater egyptian jerboa jaculus orientalis from tunisia are described and compared with available data particularly from egypt. the species examined have a similar karyotype consisting of 2n = 48 chromosomes and a fundamental number of autosomes (nfa) varying from 88 to 90 in j. jaculus and from 84 to 88 in j. orientalis. the x chromosome is submetacentric in both species, while the y is submetacentric in j. orientalis and acro ... | 2010 | 20968190 |
| congruent mammalian trees from mitochondrial and nuclear genes using bayesian methods. | analyses of mitochondrial and nuclear gene sequences have often produced different mammalian tree topologies, undermining confidence in the merit of molecular approaches with respect to "traditional" morphological classification. the recent sequencing of the complete mitochondrial genomes of two additional rodents (spalax judaei and jaculus jaculus) and one lagomorph (ochotona princeps) has prompted us to reinvestigate the issue. using bayesian phylogenetics, we found phylogenetic relationships ... | 2004 | 14660685 |
| the effect of hypnotics on brain acetylcholine level in jaculus jaculus. | | 1977 | 590719 |
| climate and seasonal variations in the breeding of the desert jerboa, jaculus jaculus, in the sudan. | | 1973 | 4522375 |
| systematics, distribution and ecological analysis of rodents in jordan. | distributional and ecological data were given to all rodents of jordan. the rodent fauna of jordan consists of 28 species with 20 genera in eight families (cricetidae, dipodidae, gliridae, hystricidae, muridae, myocastoridae, sciuridae,and spalacidae), including four introduced species.keys for families and species were provided, along with diagnosis for each species and cranial illustrations for most species. habitat preference and zoogeographic affinities of rodents in jordan wereanalyzed, as ... | 2018 | 29690341 |
| evolutionary history of two cryptic species of northern african jerboas. | climatic variation and geologic change both play significant roles in shaping species distributions, thus affecting their evolutionary history. in sahara-sahel, climatic oscillations shifted the desert extent during the pliocene-pleistocene interval, triggering the diversification of several species. here, we investigated how these biogeographical and ecological events have shaped patterns of genetic diversity and divergence in african jerboas, desert specialist rodents. we focused on two sister ... | 2020 | 32054437 |
| convergent metatarsal fusion in jerboas and chickens is mediated by similarities and differences in the patterns of osteoblast and osteoclast activities. | in many vertebrate animals that run or leap, the metatarsals and/or metacarpals of the distal limb are fused into a single larger element, likely to resist fracture due to high ground-reaction forces during locomotion. although metapodial fusion evolved independently in modern birds, ungulates, and jerboas, the developmental basis has only been explored in chickens, which diverged from the mammalian lineage approximately 300 million years ago. here, we use a bipedal rodent, the lesser egyptian j ... | 2019 | 31631508 |
| evolutionary loss of foot muscle during development with characteristics of atrophy and no evidence of cell death. | many species that run or leap across sparsely vegetated habitats, including horses and deer, evolved the severe reduction or complete loss of foot muscles as skeletal elements elongated and digits were lost, and yet the developmental mechanisms remain unknown. here, we report the natural loss of foot muscles in the bipedal jerboa, jaculus jaculus. although adults have no muscles in their feet, newborn animals have muscles that rapidly disappear soon after birth. we were surprised to find no evid ... | 2019 | 31612857 |
| a survey of mammal diversity in the turaif province, kingdom of saudi arabia. | one hundred and forty mammals of fifteen different species belonging to nine families, collected during one-year survey period in turaif province of saudi arabia, are reported. collections were made during studying the diversity of land vertebrate fauna of turaif area at the northern province of saudi arabia. cricetidae (n = 64) was the most common family. jaculus jaculus vocator (n = 34) was recorded the highest number of events for any mammal in the surveyed area followed by gerbillus nanus (n ... | 2018 | 29686525 |