00601nas a2200157   4500008004100000245011800041210006900159300001000228490000700238100001900245700001400264700001600278700001500294700001900309856011500328       2000                        eng d00aMolecular and karyological data on the South Asian genera Indirana, Nyctibatrachus and Nanophrys (Anura: Ranidae)0 aMolecular and karyological data on the South Asian genera Indira  a75-820 v251 aVences, Miguel1 aWanke, S.1 aOdierna, G.1 aKosuch, J.1 aVeith, Michael  ufile://localhost/Users/breda/Desktop/Literature/Need%20to%20Enter%20into%20Endnote/Vences%20et%20al%202000.pdf00500nas a2200121   4500008004100000245011400041210006900155100002100224700001500245700002000260700001900280856007900299       2004                        eng d00aMeasuring and monitoring amphibian diversity in East Africa: Separating global from regional and local causes0 aMeasuring and monitoring amphibian diversity in East Africa Sepa1 aLötters, Stefan1 aKosuch, J.1 aRotich, Damaris1 aVeith, Michael  ufile://localhost/Users/breda/Desktop/Literature/L/Lo%CC%88tters%202004.pdf01230nas a2200169   4500008004100000245014400041210006900185260001500254300001000269490000700279520065700286100002400943700002000967700001900987700001901006856003501025       2003                        eng d00aFirst record of the genus Acanthixalus Laurent, 1944 from the upper Guinean rain forest, West Africa, with the description of a new species0 aFirst record of the genus Acanthixalus Laurent 1944 from the upp  cMarch 2003  a43-520 v373 aWe describe a new species of Acanthixalus from southwestern Ivory Coast Acanthixalus sonjae sp. nov. differs from the Central African Acanthixalus spinosus genetically by 4.6% in the investigated 16S rRNA. Morphologically adult frogs are very similar to A. spinosus. Male A. sonjae have wider heads and probably smaller gular glands than A. spinosus. Tadpoles of A. sonjae differ by much longer tails. Acanthixalus sonjae males are apparently mute. The new species is semiaquatic and lives in large waterfilled cavities of trees in secondary and primary rain forest Tadpoles complete metamorphosis in three months. They are at least partly carnivorous.1 aRödel, Mark-Oliver1 aKosuch, Joachim1 aVeith, Michael1 aErnst, Raffael  u<Go to ISI>://PREV20030058487202313nas a2200205   4500008004100000245004600041210004600087260001500133300001400148490000800162520172000170100001901890700002301909700001601932700002201948700002001970700001901990700001602009856008202025       2003                        eng d00aMultiple overseas dispersal in amphibians0 aMultiple overseas dispersal in amphibians  c7 December  a2435-24420 v2703 aAmphibians are thought to be unable to disperse over ocean barriers because they do not tolerate the osmotic stress of salt water. Their distribution patterns have therefore generally been explained by vicariance biogeography. Here, we present compelling evidence for overseas dispersal of frogs in the Indian Ocean region based on the discovery of two endemic species on Mayotte. This island belongs to the Comoro archipelago, which is entirely volcanic and surrounded by sea depths of more than 3500 m. This constitutes the first observation of endemic amphibians on oceanic islands that did not have any past physical contact to other land masses. The two species of frogs had previously been thought to be non-endemic and introduced from Madagascar, but clearly represent new species based on their morphological and genetic differentiation. They belong to the genera Mantidactylus and Boophis in the family Mantellidae that is otherwise restricted to Madagascar, and are distinguished by morphology and mitochondrial and nuclear DNA sequences from mantellid species occurring in Madagascar. This discovery permits us to update and test molecular clocks for frogs distributed in this region. The new calibrations are in agreement with previous rate estimates and indicate two further Cenozoic transmarine dispersal events that had previously been interpreted as vicariance: hyperoliid frogs from Africa to Madagascar (Heterixalus) and from Madagascar to the Seychelles islands (Tachycnemis). Our results provide the strongest evidence so far that overseas dispersal of amphibians exists and is no rare exception, although vicariance certainly retains much of its importance in explaining amphibian biogeography.1 aVences, Miguel1 aVieites, David, R.1 aGlaw, Frank1 aBrinkmann, Henner1 aKosuch, Joachim1 aVeith, Michael1 aMeyer, Axel  ufile://localhost/Users/breda/Desktop/Literature/V/Vences%20et%20al%202003.pdf00877nas a2200277   4500008004100000245009700041210006900138653001400207653002000221653001600241100002400257700001500281700001900296700001500315700001500330700001500345700002100360700001700381700001600398700001600414700001800430700001700448700002100465700001900486856009400505       2003                        eng d00aAmphibian diversity and diversity changes in West Africa: global, regional, or local causes?0 aAmphibian diversity and diversity changes in West Africa global 10adiversity10aPhrynobatrachus10aWest Africa1 aRödel, Mark-Oliver1 aKosuch, J.1 aErnst, Raffael1 aRudolf, V.1 aSchorr, G.1 aHarbig, C.1 aFrohschammer, S.1 aLeistner, G.1 aWegmann, M.1 aAdeba, P.J.1 aKouamé, G.N.1 aCudjoe, A.A.1 aLinsenmair, K.E.1 aVeith, Michael  ufile://localhost/Users/breda/Desktop/Literature/R/Ro%CC%88del-Amphibien%20Westafrikas.pdf00735nas a2200217   4500008004100000245014100041210006900182300001200251490000700263653002000270653001600290653001700306653001500323653001600338100001900354700001500373700001300388700001500401700001900416856008200435       2003                        eng d00aMolecular phylogeny of hyperoliid treefrogs: biogeographic origin of Malagasy and Seychellean taxa and re-analysis of familial paraphyly0 aMolecular phylogeny of hyperoliid treefrogs biogeographic origin  a205-2150 v4110aAstylosternidae10aHeterixalus10aHyperoliidae10aLeptopelis10aTachycnemis1 aVences, Miguel1 aKosuch, J.1 aGlaw, F.1 aBöhme, W.1 aVeith, Michael  ufile://localhost/Users/breda/Desktop/Literature/V/Vences%20et%20al%202003.pdf02430nas a2200169   4500008004100000245013700041210006900178260000700247300001000254490000700264520186900271100001902140700002102159700002102180700002402201856003502225       2004                        eng d00aMeasuring and monitoring amphibian diversity in tropical forests. II. Estimating species richness from standardized transect censing0 aMeasuring and monitoring amphibian diversity in tropical forests  c04  a85-990 v103 aIn the face of accelerating declines in amphibian populations, it is crucial to be able to effectively identify conservation priorities, both in terms of species and localities. Rapid assessment of amphibian community structure is therefore essential. Visual encounter Survey (VES) and standardized Visual transect sampling (SVTS) are becoming increasingly important in the measurement and monitoring of tropical anuran communities. In the present paper we compare the performance of SVTS along seven tropical forest transects where frog communities are currently being monitored: Lalut Birai (Borneo, Indonesia), Kakamega Forest National Reserve (Kenya, Africa), Tai National Park (Ivory Coast, Africa; two transects) and Ambolokopatrika-Betaolana Rainforest (Madagascar, three transects). We compared species lists generated from the transects with those from the entire study areas. Species richness was estimated using different incidence- and abundance-based richness estimators: ACE, ICE, Chao1, Chao2, Firsa-order jackknife, Michaelis Menton Estimators (MMMeans and MMRuns). Only, a few transect characteristics had a significant effect on species richness estimate accuracy. Species saturation was significantly enhanced by the number of transect walks (n(counts)). The relative standard deviation of the First-order jackknife estimator significantly decreased with an increasing daily species richness and a combined effect of daily species richness and the overall abundance of frogs. Comparison of transect: and forest: species lists show that terrestrial species are best represented by VES/SVTS. We recommend that a transect census Should be performed on at least 20 independent walks. Different species richness estimators should be applied simultaneously since their behavior/effectiveness under a wide array of transect parameters is still unknown.1 aVeith, Michael1 aLötters, Stefan1 aAndreone, Franco1 aRödel, Mark-Oliver  u<Go to ISI>://PREV20051006714002160nas a2200241   4500008004100000245012100041210006900162260001600231300001200247490000700259520141600266100002101682700002001703700002201723700002001745700002001765700002001785700002001805700001901825700002001844700001901864856003501883       2006                        eng d00aWhat do we know about the amphibians from the Kenyan central and western highlands? A faunistic and taxonomic review0 aWhat do we know about the amphibians from the Kenyan central and  cAug 20 2006  a165-1790 v423 aWe reviewed the pertinent faunistic and taxonomic knowledge available from literature and scientific collections OD the amphibians from the central and western highlands of Kenya. Fifty-four anuran species in 19 genera and 12 families were recognized. Higher taxa are those also found in adjacent African regions. Exceptions are some genera otherwise known from extreme East Africa which, along with the order Gymnophiona, are absent from the central and western highlands of Kenya. The species Ptychadena schillukorum, P taenioscelis and Afrixalus osorioi are reported for the first time from Kenyan territory. The taxonomy of several species is poorly resolved, underlining the need for more alpha-taxonomic effort. This should include the application of modern methods, as molecular markers to uncover cryptic species diversity. We calculated 9.04 +/- 6.11 (1-30) localities per species (n = 54) and 3.98 +/- 2.88 (1-25) species per locality (n = 127), showing that sampling for both species and localities is of different quality and apparently far from complete. Sampling bias due to accessibility may play a role, and more comprehensive field surveys are suggested. It may be considered that certain amphibians reach their geographic range limits just at the periphery of the Kenyan central and western highlands (e.g. "Congolian" forest taxa) or are restricted to a small distribution within that region.1 aLötters, Stefan1 aRotich, Damaris1 aKoester, Timo, E.1 aKosuch, Joachim1 aMuchai, Vincent1 aScheelke, Karin1 aSchick, Susanne1 aTeege, Patrick1 aWasonga, Victor1 aVeith, Michael  u<Go to ISI>://PREV20060062009500943nas a2200181   4500008004100000245010000041210006900141260001300210300001200223490000700235520038400242100001900626700002100645700002000666700001900686700002100705856003500726       2006                        eng d00aA new species of arboreal Leptopelis (Anura : Arthroleptidae) from the forests of western Kenya0 anew species of arboreal Leptopelis Anura Arthroleptidae from the  cApr 2006  a183-1890 v163 aA new species of arboreal Leptopelis is described from Kakamega Forest, western Kenya. It is a small, brown forest species formerly referred to L. modestus, but distinguished by differences in advertisement call and the sequence of the mitochondrial 16S rRNA gene. The specific allocation of certain related populations of Leplopelis in East and West Africa is briefly discussed.1 aKöhler, Jörn1 aBwong, Beryl, A.1 aSchick, Susanne1 aVeith, Michael1 aLötters, Stefan  u<Go to ISI>://PREV20070001340301021nas a2200157   4500008004100000245007200041210006900113260001300182300001200195490000700207520055400214100002000768700001900788700002100807856003500828       2005                        eng d00aDistribution patterns of amphibians from the Kakamega Forest, Kenya0 aDistribution patterns of amphibians from the Kakamega Forest Ken  cDec 2005  a185-1900 v543 aWe discuss generalized geographical range patterns for the 24 anuran species that occur in the Kakamega Forest, western Kenya. Eight distributions are distinguished: from "western Equatorial Rift Valley" to almost entire sub-Saharan. The former may be more common than previously assumed, because some species displaying this geographical range pattern were only recently identified out of species complexes with large distributions. In contrast, continuous distributions of species over the Congo basin may be less common than currently understood.1 aSchick, Susanne1 aVeith, Michael1 aLötters, Stefan  u<Go to ISI>://PREV20060014725601871nas a2200181   4500008004100000245015300041210006900194260001100263300001200274490000700286520126200293100001901555700002001574700002001594700001901614700002101633856003501654       2005                        eng d00aContribution to the taxonomy of hyperoliid frogs (Amphibia: Anura: Hyperoliidae): advertisement calls of twelve species from East and Central Africa0 aContribution to the taxonomy of hyperoliid frogs Amphibia Anura   cApr 05  a127-1420 v403 a<p>Detailed advertisement call descriptions are provided for 12 species of hyperoliid frogs (Afrixalus dorsalis, A. osorioi, A. paradorsalis, A. quadrivittatus, Hyperolius cystocandicans, H. glandicolor H. langi, H. montanus, H. phantasticus, H. puncticulatus, Leptopelis christyi, Phlyctimantis cf. boulengeri) from different localities in East Africa and Gabon. The call of each species is figured in a spectrogram and waveform. East African populations of frogs of the Afrixalus fulvovittatus complex are considered to represent A. quadrivittatus (formerly a junior synonym of A. fulvovittatus). Its advertisement call differs significantly from West African populations reported as A. vittiger. The allocation of green and golden colour morphs from Mount Kenya to the species H. cystocandicans is confirmed by bioacoustics. The presence of H. kuligae in East Africa (Uganda) is doubted. Based on morphological comparisons with type specimens, calls of Phlyctimantis recorded in Gabon are tentatively referred to R boulengeri. The species is supposed to occur in Cameroon, Equatorial Guinea, Gabon and the Republic of Congo according to advertisement call comparisons. West African populations of Phlyctimantis may represent an undescribed species.</p>
1 aKöhler, Jörn1 aScheelke, Karin1 aSchick, Susanne1 aVeith, Michael1 aLötters, Stefan  u<Go to ISI>://PREV20051010670601883nas a2200193   4500008004100000245012300041210006900164260001300233300001200246490000800258520126800266100001901534700002101553700002101574700001701595700002301612700001901635856003501654       2007                        eng d00aLarval morphology of reed frogs, Hyperolius kivuensis and H. viridiflavus, from western Kenya (Amphibia, Hyperoliidae)0 aLarval morphology of reed frogs Hyperolius kivuensis and H virid  cDec 2007  a825-8370 v1143 aWe describe external characters, oral disc and oral cavity structures of larval Hyperolius kivuensis and H. viridiflavus, i.e. exotrophous lentic benthic type IV tadpoles. External morphology of both is comparable and matches descriptions of other Hyperolius species. Differences among the two taxa were noted in the keratinized labial teeth. In H. kivuensis, the spoon-shaped cusped tooth type is frequent and represented by two different subtypes: (i) "cusped" with four cusps, the two distal of which only slightly larger than the lateral cusps; (ii) "pointed" with the two distal cusps larger than the two lateral cusps forming a bifurcation. The latter subtype is rare in H. kivuensis, while most frequent in H. viridiflavus. In this species, also another type occurs, characterized by two long distal cusps, forming a bifurcation, and two small lateral cusps; the cusped type with cusps of the same size as in H. kivuensis is rare. Both species show similar oral cavity structures except for the choanae position, i.e. arranged in a V that is opened posteriorly in H. kivuensis versus a V opened anteriorly in H. viridiflavus. Choanae position and keratinized labial teeth structure may provide diagnostic features for these and other species of Hyperolius.1 aViertel, Bruno1 aLötters, Stefan1 aBaumgart, Andrea1 aOberst, Marc1 aEisenbeis, Gerhard1 aVeith, Michael  u<Go to ISI>://PREV20080012036501777nas a2200157   4500008004100000245009400041210006900135260001300204300001200217490000700229520128500236100002001521700001901541700002401560856003501584       2008                        eng d00aEffects of forest fragmentation and habitat degradation on west African leaf-litter frogs0 aEffects of forest fragmentation and habitat degradation on west   cJun 2008  a762-7720 v223 aHabitat degradation alters the dynamics and composition of anuran assemblages in tropical forests. The effects of forest fragmentation on the composition of anuran assemblages are so far poorly known. We studied the joint influence of forest fragmentation and degradation on leaf-litter frogs. We specifically asked whether the processes structuring leaf-litter anuran assemblages in fragmented forests are the same as those in continuous forests. We analyzed anuran assemblages with respect to habitat characteristics, including fragmentation and degradation parameters. In comparison with continuous forests, species richness and diversity were lower and assemblage composition was altered in forest fragments. These changes seemed to be mainly caused by habitat degradation rather than forest fragmentation. Availability of aquatic sites for breeding, vegetation structure (including those variables indicating degradation), and leaf-litter cover bad the most influence on the presence of single species. The comparatively small impact of fragmentation on anurans might be due to the location of the study area; it still possessed large tracts of continuous forest. These forest blocks may stabilize the regional rainforest climate and thus weaken the effects of fragmentation.1 aHillers, Annika1 aVeith, Michael1 aRödel, Mark-Oliver  u<Go to ISI>://PREV200800447588