scholarly journals Astatotilapia species (Teleostei, Cichlidae) from Malawi, Mozambique and Tanzania, excluding the basin of Lake Victoria.

2021 ◽  
Author(s):  
George Turner ◽  
Benjamin P Ngatunga ◽  
Martin J Genner
Keyword(s):  
Great Lake ◽  
Lake Tanganyika ◽  
Lake Victoria ◽  
River System ◽  
Lake Malawi ◽  
Fish Farm ◽  
Type Locality ◽  
Sister Taxon ◽  
Type Specimens ◽  
Haplochromine Cichlid

The haplochromine cichlid fauna of the rivers and smaller lakes of Tanzania and SE Africa are of key importance in understanding the origins and inter-relationships of the great lake cichlid radiations of Malawi, Tanganyika and Victoria. Prior to formal taxonomic investigations, here we present the results of investigations of the type specimens, identification of type localities and superficial characterisation of freshly-collected material. The type locality of Astatotilapia bloyeti (Sauvage, 1883) is identified as the Mkondowa River, near Kilosa. This species appears to be the only haplochromine found in the Wami system. It is concluded that junior synonyms of A. bloyeti include A. strigigena (Pfeffer, 1893), A. kilossana (Steindachner, 1915) and A. paludinosa Greenwood, 1980. Astatotilapia sparsidens (Hilgendorf, 1905) is closely related and may constitute a junior synonym or a sister taxon. The range of A. bloyeti includes the Pangani system. The type locality for Astatotilapia gigliolii (Pfeffer, 1896) is identified as the Kingani River, or southern Ruvu, where it appears to be the only haplochromine in the river system. Junior synonyms include Astatotilapia vollmeringi (Steindachner, 1915) from the Great Ruaha River at Kidatu and Astatotilapia tweddlei Jackson, 1985 from Lakes Chilwa and Chiuta. The species is also reported from the lower part of the Rufiji system, the Ruvuma system and from other lakes and rivers in between. A few specimens were also collected in and around a fish farm at Songea, in the upper reaches of the Ruhuhu system (Lake Malawi catchment). Apart from this record, the only Astatotilapia species in the Lake Malawi catchment is A. calliptera. Four undescribed Astatotilapia species are identified from the Rufiji system, while other possibly undescribed taxa from the basins of Lake Tanganyika and Rukwa are discussed.

scholarly journals A revision of the genus Astatoreochromis (Teleostei, Cichlidae), East–Africa

2013 ◽  
Author(s):  
Gaspard Bayankimbona ◽  
Emmanuel Vreven ◽  
Jos Snoeks
Keyword(s):  
Lake Tanganyika ◽  
Lake Victoria ◽  
Taxonomic Revision ◽  
Valid Species ◽  
Type Specimens ◽  
Morphometric Measurements ◽  
Lake Victoria Region ◽  
Clear Differentiation ◽  
Pharyngeal Jaw ◽  
Comparable Size

A taxonomic revision of the cichlid genus Astatoreochromis is presented. Eighteen meristic and 23 morphometric measurements were taken on 185 individuals, including type specimens. While fin counts separate populations from the Lake Victoria region (Astatoreochromis alluaudi) from those of the Rusizi and Malagarazi rivers in the Lake Tanganyika basin (A. vanderhorsti and A. straeleni respectively), clear differentiation was not detected between the latter two. Mann-Whitney U-tests on specimens of comparable size from the two Tanganyika populations revealed significant differences in specimens < 75 mm SL, mainly in pharyngeal jaw proportions, but also in some other measurements on the head and body. However, these differences were not detected in specimens > 75 mm SL and Astatoreochromis vanderhorsti is herein considered a junior synonym of A. straeleni. A redescription of the two valid species of Astatoreochromis, A. alluaudi and A.straeleni, is provided.

A new species of Diplotaxodon (Cichliformes: Cichlidae) from Lake Malaŵi

Zootaxa ◽  
2021 ◽  
Vol 4903 (2) ◽  
pp. 275-284
Author(s):  
JAY R JR. STAUFFER ◽  
ADRIANUS F. KONINGS
Keyword(s):  
New Species ◽  
Principal Components Analysis ◽  
Principal Components ◽  
Cichlid Fish ◽  
Lake Malawi ◽  
Type Specimens ◽  
Snout Length ◽  
Haplochromine Cichlid ◽  
Components Analysis ◽  
A New Species

A species of haplochromine cichlid fish of the genus Diplotaxodon Trewavas, endemic to Lake Malaŵi is described: Diplotaxodon dentatus, new species. All eight type specimens were trawled together off Thumbi East Island in the Southeastern arm of the lake at 73 meters in 1985. They were initially identified as D. argenteus because the teeth on the oral jaws were fully exposed with a closed mouth. The shorter snout length of D. dentatus (26.6–29.2 % HL) clearly separates it from D. argenteus (31.7–34.2 % HL). A plot of a principal components analysis further supports the separation of D. dentatus from D. argenteus. 

scholarly journals Back to Tanganyika: a case of recent trans-species-flock dispersal in East African haplochromine cichlid fishes

2015 ◽  
Vol 2 (3) ◽  
pp. 140498 ◽  
Author(s):  
Britta S. Meyer ◽  
Adrian Indermaur ◽  
Xenia Ehrensperger ◽  
Bernd Egger ◽  
Gaspard Banyankimbona ◽  
...  
Keyword(s):  
Lake Tanganyika ◽  
Lake Victoria ◽  
Species Flock ◽  
East African ◽  
Cichlid Species ◽  
African Great Lakes ◽  
Cichlid Fishes ◽  
Haplochromine Cichlid ◽  
Lake Victoria Region ◽  
Adaptive Radiations

The species flocks of cichlid fishes in the East African Great Lakes are the largest vertebrate adaptive radiations in the world and illustrious textbook examples of convergent evolution between independent species assemblages. Although recent studies suggest some degrees of genetic exchange between riverine taxa and the lake faunas, not a single cichlid species is known from Lakes Tanganyika, Malawi and Victoria that is derived from the radiation associated with another of these lakes. Here, we report the discovery of a haplochromine cichlid species in Lake Tanganyika, which belongs genetically to the species flock of haplochromines of the Lake Victoria region. The new species colonized Lake Tanganyika only recently, suggesting that faunal exchange across watersheds and, hence, between isolated ichthyofaunas, is more common than previously thought.

scholarly journals Four new Caribbean Sigambra species (Annelida, Pilargidae), and clarifications of three other Sigambra species

ZooKeys ◽  
2019 ◽  
Vol 893 ◽  
pp. 21-50
Author(s):  
Sergio I. Salazar-Vallejo ◽  
Alexandra E. Rizzo ◽  
J. Ángel de León-González ◽  
Kalina M. Brauco
Keyword(s):  
New Species ◽  
Species Group ◽  
Morphological Features ◽  
Type Locality ◽  
Coastal Environments ◽  
Type Specimens

Sigambra grubii Müller, 1858 has been reported from many different coastal environments in Brazil and the Grand Caribbean. However, more than one species was thought to be included under this species group name. After the study of several subtle and consistent differences in specimens fitting the description S. grubii, a new Grand Caribbean species is herein recognized and described as S. hernandezisp. nov. Further, the study of other Sigambra specimens prompted the examination of type specimens of S. bassi (Hartman, 1947), and of S. wassi Pettibone, 1966 to clarify some morphological features, and three other new species are recognized and newly described: S. diazisp. nov. and S. ligneroisp. nov. from the southeastern Caribbean (Venezuela), and S. olivaisp. nov. from the northwestern Caribbean (México). Morphological features are also clarified for S. grubii by comparison with specimens from the type locality, Florianópolis, Brazil, and with type specimens of S. bassi from Florida (U.S.A.), and non-type specimens of S. wassi from Virginia (USA). A key to identify all species of Sigambra is also included.

Cartographical Quandaries: the Limits of Knowledge Production in Burton's and Speke's Search for the Source of the Nile

2008 ◽  
Vol 35 ◽  
pp. 455-479 ◽  
Author(s):  
Adrian S. Wisnicki
Keyword(s):  
Knowledge Production ◽  
Lake Tanganyika ◽  
Lake Victoria ◽  
Julius Caesar ◽  
East African ◽  
Blue Nile ◽  
Historical Series ◽  
The World ◽  
Limits Of Knowledge ◽  
White Nile

When he sighted the southern end of Lake Victoria on 3 August 1858, John Hanning Speke (1859b:397) realized that he had discovered the “source” of the White Nile, the most important tributary of the Nile proper, and so had “almost, if not entirely, solved a problem which it has been the first geographical desideratum of many thousand years to ascertain, and the ambition of the first monarchs of the world to unravel.” That Speke was an unknown explorer and that he had made his discovery on a solo “flying trip” during the East African Expedition of 1856-59, which, under the command of the renowned explorer Richard Francis Burton, had already also discovered Lake Tanganyika, made Speke's accomplishment all the more remarkable.As contemporaries soon asserted, Speke's discovery culminated a historical series of excursions, real and imagined, into the interior of Africa and placed Speke at the pinnacle of a line of explorers and geographers that ran from Herodotus, Julius Caesar, and Ptolemy to, in more recent times, James Bruce (the Scotsman who “discovered” the source of the Blue Nile, the second most important tributary of the Nile, in 1770), the German missionaries Ludwig Krapf and Johannes Rebmann (who “discovered,” respectively, the snow-capped mountains of Kilimanjaro in 1848 and Kenya in 1849), and noted “armchair geographers” like W.D. Cooley, Charles Beke, and James M'Queen.

An annotated catalog of types of Neotropical Pierinae (Lepidoptera: Pieridae) in the collection of the National Museum of Natural History, Smithsonian Institution, Washington DC

Zootaxa ◽  
2005 ◽  
Vol 1022 (1) ◽  
pp. 1 ◽  
Author(s):  
STANISLAV P. ABADJIEV
Keyword(s):  
Natural History ◽  
Taxonomic Status ◽  
Smithsonian Institution ◽  
Species Group ◽  
Type Locality ◽  
Washington Dc ◽  
National Museum ◽  
Original Publication ◽  
Type Specimens ◽  
New Synonym

A catalog of the type material of 59 taxa of Neotropical Pierinae housed in the National Museum of Natural History, Smithsonian Institution, Washington, DC, is presented. Each entry includes the species-group name, the original combination quoted from the original publication, the type locality, the type specimens with their labels, and notes about current taxonomic status. One new synonym has been established, Euterpe dysoni Doubleday, 1847 = Leodonta marginata Schaus, 1902. Lectotypes are designated for 5 species group taxa: Archonias intermedia Schaus, 1913, Hesperocharis jaliscana Schaus, 1898, H. paranensis Schaus, 1898, Pieris sublineata Schaus, 1902, and P. limona Schaus, 1913.

scholarly journals Molecular conformation of then published Ziziphus budhensis and its religious and economic values

2017 ◽  
Vol 27 (1) ◽  
pp. 55-59
Author(s):  
M. L. Pathak ◽  
H. C. Li ◽  
B. Xu ◽  
X. F. Gao ◽  
K. K. Pokharel ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Conformation ◽  
The Other ◽  
Type Locality ◽  
Type Specimens ◽  
Economic Values ◽  
Molecular Analyses ◽  
Dna Analyses ◽  
Morphological Differences ◽  
A New Species

  The newly described species, Ziziphus budhensis was confirmed as Chinese Jujuba, Z. xiangchengensis on the basis of their DNA analyses. Z. budhensis was explained as a new species on the basis of some morphological differences in 2015. In the Year 2016, the DNA samples were collected from the type locality of Nepal, and the molecular analyses were carried out. The type specimens and the other available images from the different herbariums were examined. Besides, the protologue and the type images were studied carefully. The result showed that though there were some differences in the habit and the habitat of the plant, the previously described new species, Z. budhensis was found to be same as the Chinese species, Z. xiangchengensis. This study also showed the importance of the molecular work of Z. budhensis and confirmed it morphologically distinct although it was very close to the Chinese species.Banko Janakari, Vol. 27, No. 1, page: 55-59

The type specimens of Trichomycterus alternatus (Eigenmann, 1917) and Trichomycterus zonatus (Eigenmann, 1918), with elements for future revisionary work (Teleostei: Siluriformes: Trichomycteridae)

Zootaxa ◽  
2019 ◽  
Vol 4585 (1) ◽  
pp. 100 ◽  
Author(s):  
VINÍCIUS J. C. REIS ◽  
MÁRIO DE PINNA
Keyword(s):  
Data Acquisition ◽  
High Elevation ◽  
External Morphology ◽  
Type Locality ◽  
Type Material ◽  
Southeastern Brazil ◽  
Type Specimens ◽  
New Information ◽  
Coastal Streams ◽  
Respective Species

The trichomycterid catfish species Trichomycterus alternatus (Eigenmann, 1917) and Trichomycterus zonatus (Eigenmann, 1918) are reportedly among the most pervasive species in mid- to high-elevation coastal streams of Southeastern Brazil. Despite their apparent abundance and ecological ubiquity, the applicability of their names is still uncertain. Examination of the type material of the two species reveals that part of the confusion stems from a mixing of species in the T. zonatus type series. Other issues relate to reports of character conditions in the respective species that do not actually correspond to the situation in their type specimens. Such situation triggered a long-lasting chain of taxonomic misinterpretations and erroneous identification protocols and traditions so that even the taxonomic distinctiveness of the two species is nebulous. That situation is disentangled in detail on the basis of new information on the holotypes and remaining type specimens of each species by classical and new (stereo triplet radiography) morphology analyses for data acquisition. Results show that the type specimens of T. alternatus and T. zonatus differ pronouncedly in several traits of internal and external morphology and represent markedly distinct taxa. The latter species does not correspond to most identifications in the literature and is, in fact, endemic to the region of its type locality. We also clarify and map the reported localities of the type material and offer comments on the validity of T. alternatus and T. zonatus, along with that of possibly related forms. 

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