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1.
Capparis (Capparaceae) has been used as a medicinal plant since ancient time. Capparis species were divided into Old World and New World taxa as described by the sectional division of Capparis. However, plastid DNA sequence data of Indian Capparis species were not analyzed in previous phylogenetic studies. Here, we have added Indian Capparis data in previous phylogeny and analyzed the relationship of Indian Capparis with Old World and New World taxa. The plastid phylogeny presented here includes Capparis taxa from its major distribution areas, New World and African capparoids. The presented phylogeny is used for the determination of biogeographic history of Capparis and recently segregated genera. Phylogenetic analyses of the combined plastid data revealed that the Indian Capparis are more closely related to Old World taxa and have connections with African, Australian and Eastern Asian species. Sectional classification of Old World and Indian Capparis considered in this study is reflected from the presented plastid phylogeny. The ancestral area reconstruction using Bayesian Binary Markov Chain Monte Carlo method strongly supports for the Africa as the ancestral region for both Old World and New World Capparis. Molecular marker-based genetic diversity studies on Indian Capparis are scarce. This work also includes the genetic diversity study of Indian Capparis species. Utility and efficacy of ISSR markers to study inter- and intraspecies variation in Capparis is evident from the AMOVA results.  相似文献   

2.
Datura (Solanaceae)is a small genus of plants that,for long, was thought to occur naturally in both the New and Old Worlds. However, recent studies indicate that all species in the genus originated in the Americas. This finding has prompted the conclusion that no species of Datura could have been present in the Old World prior to its introduction there by Europeans in the early 16th century CE. Further, the textual evidence traditionally cited in support of a pre-Columbian Old World presence of Datura species is suggested to be due to the misreading of classical Greek and Arabic sources. As a result, botanists generally accept the opinion that Datura species were transferred into the Old World in the post-Columbian period. While the taxonomic and geographic evidence for a New World origin for all the Datura species appears to be well supported, the assertion that Datura species were not known in the Old World prior to the 16th century is based on a limited examination of the pre-Columbian non-Anglo sources.We draw on old Arabic and Indic texts and southern Indian iconographic representations to show that there is conclusive evidence for the pre-Columbian presence of at least one species of Datura in the Old World. Given the systematic evidence for a New World origin of the genus, the most plausible explanation for this presence is a relatively recent but pre-Columbian (probably first millennium CE) transfer of at least one Datura species, D. metel, into the Old World. Because D. metel is a domesticated species with a disjunct distribution,this might represent an instance of human-mediated transport from the New World to the Old World, as in the case of the sweet potato (Ipomoea batatas).  相似文献   

3.
Studies of phylogenetic relationships among cypresses of the Old World (Cupressus; Cupressaceae) have been plagued by unresolved relationships, poor branch support, and conflict between data sets and methods of analysis. In this study, we combined 5.4 kb of aligned DNA sequence and 157 binary characters with previously published data in examining phylogenetic relationships among Cupressus species. Bayesian and parsimony analysis of the combined data or of the nuclear data alone always recovered three principal clades of Cupressus; however, tests of phylogenetic incongruence could not distinguish between competing relationships among the three principal Cupressus lineages. In contrast, incongruence tests often found statistically significant conflict between the nuclear and plastid data, particularly with respect to the placement of C. chengiana. Consistent with previous studies and prevailing taxonomic opinion, we find C. darjeelingensis more closely related to cypresses of the New World (Hesperocyparis). In contrast, we placed accessions of C. assamica and C. tonkinensis, two putatively Old World species suggested to be misidentified New World taxa by some authors, within well-supported Old World clades. Statistical analysis of genetic distances suggests instances in which taxa recognized as distinct species by some authors are identical or nearly so and may best be considered a single taxon. Conversely, we identify instances in which infraspecific taxa are more distantly related to one another than those traditionally recognized as distinct species. Factors confounding cypress taxonomies, including poor morphological differentiation, misidentification, and the use of accessions of questionable provenance, are discussed.  相似文献   

4.
We anatomically characterized the aerial stems of the genus Dioscorea and evaluated the use of these anatomical characteristics to better understand the taxonomy, systematics, and diversity of the component species in the neotropics. Fragments of the aerial stems of 23 species were collected for anatomical analyses utilizing conventional cytohistological techniques. Stem anatomy did not support the subgenera and neotropical sections of Dioscorea, although D. sect. Monadelpha demonstrated similar anatomical characteristics with the representatives analyzed in the present work, supporting the possible monophyletism of that section. Some New World species demonstrated characteristics described earlier for Old World species, such as two phloem units internal to the large-diameter vessels. New characters to the vascularization of new world species are described, as a single ring of vascular bundles, intercalating common and cauline bundles. Tylosoids and actinocytic stomata were the first time reported in Dioscorea, and the vascular patterns are revisited with a systematic approach.  相似文献   

5.
Tayassuidae is a family of pig-like Artiodactyla restricted to the New World. Despite its rich fossil history, they have received less attention from a taxonomic and phylogenetic perspective when compared to the Old World pigs, Suidae. In this study, we performed a computer assisted phylogenetic analysis using morphological and molecular data including fossil and extant Tayassuidae, using parsimony and Bayesian approaches. We recovered the monophyly of the family Tayassuidae, confirming previous proposals, as well as the monophyly of the subfamilies Hesperhyinae and Tayassuinae, and the genus Platygonus, which we placed in a new taxon of tribe level. The three living peccaries and a number of fossil species belong to a new, tribe level, monophyletic group. The genus Catagonus comes out as paraphyletic, leading us to propose to restrict the generic name to the type species, C. metropolitanus, and a new taxonomic arrangement for the remaining species previously included in it, revalidating the genera Brasiliochoerus and Parachoerus, and describing a new genus, Protherohyus, gen. nov.  相似文献   

6.
The review contains a key to females of the species of the genus Leptomastidea Mercet, 1926 of the World fauna and annotated synopsis of 25 species with data on their distribution, hosts, plants, and use in biological control [for L. abnormis (Girault)]. L. ljubodragi sp. n. is described from Montenegro. A new genus Proleptomastidea gen. n. is erected for Leptanusia enigmatica Trjapitzin, 1971 from Turkmenistan. Leptanusia turkmenica Myartseva, 1978 is transferred to the genus Anagyrus Howard, 1896 and, thus, a new combination, Anagyrus turkmenicus (Myartseva, 1978), comb. n., is formed.  相似文献   

7.
8.
Maranthes, a genus well known in Africa and Asia, has not been recorded previously in the New World.Couepia panamensis, thought to be endemic to Panama, was found to be synonymous withMaranthes corymbosa, a widespread Asiatic species, and it is reduced into synonymy, making the first American record ofMaranthes. The relationship ofMaranthes toCouepia, and the unusual distribution ofM. corymbosa are discussed.  相似文献   

9.
The genus Myotis is unique among mammals in its high taxonomic diversity and global distribution. Their phylogenetic relationships reflect biogeographic affinities rather than phenotypes. Myotis diverged from other bats in the early Miocene, with a subsequent split between Old and New World lineages about 19 million years ago. Similar ecomorphs (‘Leuconoe’ [near-water hunters], ‘Myotis’ [gleaners], ‘Selysius’ [aerial hawkers]) emerged independently in different lineages of Myotis. We retrieved the probable ancestral ecomorph for each lineage. Phenetic diversity was estimated from the analysis of body and skull traits. It seems that evolution of Myotis fluctuated between ‘Leuconoe’, ‘Selysius’, and larger ‘Myotis’.  相似文献   

10.
Physella acuta (Draparnaud, 1805) is an aquatic pulmonate snail notorious for its high invasive potential. Of New World origin, this species now occurs on all continents. The aim of this study was to trace P. acuta dispersal through the Western Palearctic starting from its first arrival in the Old World and to determine possible drivers of this process. A range of literary sources as well as some rich European malacological collections have been consulted to ascertain the dates of the first finding of P. acuta in the countries of Europe, Transcaucasia, and Central Asia and to map the most significant localities. The shell characteristics of this species are so distinctive that they almost preclude misidentification and confusion with any native species. This allows one to rely on historical records, including older sources (18th to the first half of the 19th centuries). The earliest reliable records of P. acuta in the Old World can be dated to 1742, which implies an earlier date for the first arrival of the species in Europe, possibly in the 17th century. Its introduction may be explained either by accidental dispersal mediated by humans (for example, during transport of exotic plants to European botanical gardens) or by natural causes (long-distance dispersal from the Americas to Europe). Three successive phases leading to the current invasive range of P. acuta in the Western Palearctic can be identified. The species’ current Old World range can be viewed as a result of the interaction of natural and anthropogenic factors. The human-mediated drivers of dispersal include canal building, the aquarium trade and, more recently, alteration of natural freshwater habitats.  相似文献   

11.
Species of the genus Oxymetopon of the fauna of Vietnam are revisited. New species O. curticauda sp. n. is described. New synonymy of O. compressum Chan, 1966 = O. formosum Fourmanoir, 1967 is established. New traits for the species identification are revealed. A key to the species was compiled.  相似文献   

12.
The European Miocene records a wide diversity of hyaenid ecomorphotypes represented by multiple genera. Among these, Hyaenictis Gaudry, 1861, is one of the least known. This genus includes four species from the late Miocene and Pliocene of the Old World, but in Europe Hyaenictis is only represented by two species, recorded by scarce and fragmentary remains: Hyaenictis graeca Gaudry, 1861, from Pikermi (MN12; Greece) and Hyaenictis almerai Villalta Comella and Crusafont Pairó, 1948, from Sant Miquel de Toudell (MN10; Vallès-Penedès Basin, NE Iberia). Here, we describe a new skull of Hyaenictis aff. almerai from the Vallès-Penedès site of Ronda Oest Sabadell Sector D (MN10), representing the most complete European specimen of the genus. In the presence of m2 and virtual lack of m1 metaconid, the described cranium more closely resembles Hyaenictis rather than any other medium- to large-sized European hyaenid. However, the new skull does not fit well with previously known Hyaenictis species, more closely resembling the bone-cracking Adcrocuta Kretzoi, 1938, in the development of premolar accessory cuspids and the possession of relatively broad cheek teeth. These and other features (strong mandibular muscular insertions and enamel microstructure) denote more durophagous adaptations than previously documented in Hyaenictis (considered a cursorial/dog-like hyaena), and favor the inclusion of H. aff. almerai in the transitional bone-cracking hyaenid ecomorphotype.  相似文献   

13.
The subgenus Pocusogetus Rtt. of the genus Otiorhynchus Germ. is revised. The subgenus includes O. rosti Strl., O. shapovalovi Davidian et Yunakov, O. obsulcatus Strl., O. fischtensis Rtt., and O. gusakovi sp. n. closely related to O. fischtensis (both from Mt. Fisht, the Western Caucasus). O. fischtensis is transferred from the subgenus Vicoranius Rtt., its lectotype is designated. A key to species of Pocusogetus is given. The systematic position of the subgenera Pocusogetus and Vicoranius in the genus Otiorhynchus is discussed. New data on the geographical distribution and ecology of the little-known species of the subgenera Obvoderus Rtt., Pseudoprovadilus Magnano, and Clypeorhynchus Yunakov et Arzanov are given. Some features of ecological differentiation between Otiorhynchus species in the alpine and subalpine zones of the Caucasus are discussed.  相似文献   

14.
15.
Mites of the genus Tyrophagus (Acari: Acaridae) are among the most widespread and common mites, inhabiting diverse natural and anthropogenic habitats. Some species are pests of agricultural products and stored food and/or live in house dust, causing allergies to humans. We sequenced 1.2 kb of the mitochondrial COI gene for 38 individuals belonging to seven species of Tyrophagus, including T. curvipenis, T. putrescentiae, T. fanetzhangorum, T. longior, T. perniciosus, and T. cf. similis. Molecular phylogenetic analyses (1) recovered two major clades corresponding to the presence or absence of eyespots, and (2) separated all included morphological species. Tyrophagus curvipenis and T. putrescentiae had the lowest between-species genetic distances (range, mean?±?SD): 14.20–16.30, 15.17?±?0.40 (K2P). The highest within-species variation was found in T. putrescentiae 0.00–4.33, 1.78?±?1.44 (K2P). In this species, we recovered two distinct groups; however, no geographical or ecological dissimilarities were observed between them. Based on our analyses, we document important morphological differences between T. curvipenis and T. putrescentiae. For the first time, we record the occurrence of T. curvipenis in the New World and suggest that it may be an emerging pest as it is currently spreading in agricultural produce.  相似文献   

16.
The world’s sole ‘parasitic’ gymnosperm Parasitaxus usta (Podocarpaceae) is endemic to the island of Grande Terre, New Caledonia. It is a threatened species because of its limited geographic range and progressing habitat fragmentation. Here, we report a novel scale insect outbreak on a Parasitaxus sub-population from Monts Dzumac in the southern part of Grande Terre. The identity of the scale insect was determined through combining morphological and molecular methods. The field collection of scale insects and their secretions from infested Parasitaxus specimens allowed morphological identification of the superfamily Coccoidea. Subsequent genetic sequencing using CO1 markers allowed phylogenetic placement of the wax scale insects to the genus Ceroplastes (Coccoidea, Coccidae), a widespread pest genus. The identified species, C. pseudoceriferus, has not been previously recorded from New Caledonia. As Parasitaxus is already vulnerable to extinction, this new threat to its long-term survival needs to be monitored. Other New Caledonian endemic plant species are potentially at risk of this new species, although it was not observed on Falcatifolium taxoides, the host of Parasitaxus.  相似文献   

17.
The taxonomic composition of the genus Plinthus Germar, 1817 is considered. The procedure of dissection of the weevil genitalia, variations in the endophallus armature, proventriculus, and crop in Plinthus species are described, and the terminology for these structures is explained. The taxonomic significance of the morphological characters of the endophallus, proventriculus, and crop, as well as the phylogenetic relationships of the genus Plinthus and its subgenera are discussed. New data on the taxonomy, morphology, and distribution of species from the subgenera Plinthomeleus Reitter, 1913 and Plinthus s. str. are presented. Keys to the subgenera of Plinthus and to species groups of the subgenus Plinthomeleus are given. Plinthus squalidus is recorded from the Caucasus and Russia for the first time.  相似文献   

18.
Coccodiella is a genus of plant-parasitic species in the family Phyllachoraceae (Phyllachorales, Ascomycota), i.e., tropical tar spot fungi. Members of the genus Coccodiella are tropical in distribution and are host-specific, growing on plant species belonging to nine host plant families. Most of the known species occur on various genera and species of the Melastomataceae in tropical America. In this study, we describe the new species C. calatheae from Panama, growing on Calathea crotalifera (Marantaceae). We obtained ITS, nrLSU, and nrSSU sequence data from this new species and from other freshly collected specimens of five species of Coccodiella on members of Melastomataceae from Ecuador and Panama. Phylogenetic analyses allowed us to confirm the placement of Coccodiella within Phyllachoraceae, as well as the monophyly of the genus. The phylogeny of representative species within the family Phyllachoraceae, including Coccodiella spp., graminicolous species of Phyllachora and taxa with erumpent to superficial stroma from several host families, suggests that the genus Phyllachora might be polyphyletic. Furthermore, tar spot fungi with superficial or erumpent perithecia seem to be restricted to the family Phyllachoraceae, independently of the host plant. We also discuss the biodiversity and host-plant patterns of species of Coccodiella worldwide.  相似文献   

19.
The merkli group of the weevil genus Plinthus is revised. Plinthus navarsati Davidian et Savitsky, sp. n. is described from Northeastern Turkey. New data on the morphology and geographical distribution of P. merkli Frivaldszki, 1894, P. cavazzutii Meregalli, 1985, and P. latipennis Meregalli, 1985 are given, with a key to all the four species of the merkli group.  相似文献   

20.
Eight nonhuman primate species were compared in three experiments utilizing the oddity paradigm. The sample included 4 lemurs (Lemur catta), 26 Old World Monkeys (Macaca mulatta, M. nemestrina, M. speciosa, andCercopithecus nictitans) and 21 New World Monkeys (Cebus apella, Lagothrix humboldti andSaimiri sciurea). EveryS was first trained 60 days on “outside oddity” problems. Next,Ss solved “outside” oddity problems constituted from two short and two tall cylinders, and were tested for their perception of oddity withDavis andMcDonald's (1962) technique of varying the height of the centerplaced but nonreinforced stimulus. In the final experiment,Ss were given ambiguous oddity problems that could be solved either for form or color cues, andEs recorded preference. Cebus and woolly monkeys formed oddity learning sets as well as or better than any of the Macaque monkeys, but relatively poor performances were made by squirrel monkeys, spotnose monkeys, and lemurs. Woolly monkeys were outstandingly accurate in their perception of oddity based on changing stimulus height, no other species approaching them in this skill. Old World Monkeys were much more likely than New World Monkeys to use color as a cue.  相似文献   

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