Neotropical Monogenoidea. 3. Five new species from South America with the proposal of Tereancistrum gen. n. and Trinibaculum gen. n. (Dactylogyridae: Ancyrocephalinae)

Abstract Five new species of Monogenoidea (Dactylogyridae: Ancyrocephalinae) are described from the gills of freshwater fishes of South America: Jainus amazonensis sp. n., Tereancistrum kerri gen. et sp. n., and Trlnibaculum braziliensis gen. et sp. n. (all) from Brycon melanopterus (Cope), Januacá Lake near Manaus, Amazonas, Brasil; Tereancistrum ornatus sp. n. from Prochilodus reticulatus Steindachner, Rio Cauca, Juanchito, Cali, Valle, Colombia; and T. parvus sp. n. from Leporinus fasciatus (Bloch), Amazon River Basin. Two new genera are proposed. Tereancistrum gen. n. is characterized by having spathulate acessory anchor sclerites associated with the ventral anchors. Trinibaculum gen. n. is proposed for species with a single ventral bar, two widely separated dorsal bars, a dextroventral vagina, confluent intestinal crura, and intercecal gonads.

Download Full-text

Magosternarchus, a New Genus with Two New Species of Electric Fishes (Gymnotiformes: Apteronotidae) from the Amazon River Basin, South America

Copeia ◽

10.2307/1447530 ◽

1996 ◽

Vol 1996 (3) ◽

pp. 657 ◽

Cited By ~ 29

Author(s):

John G. Lundberg ◽

Cristina Cox Fernandes ◽

James Spurling Albert ◽

Marcelo Garcia

Keyword(s):

New Species ◽

South America ◽

River Basin ◽

New Genus ◽

Amazon River ◽

Amazon River Basin ◽

Two New Species ◽

Electric Fishes

Download Full-text

Neotropical Turtle Blood Flukes: Two New Genera and Species from the Amazon River Basin with a Key to Genera and Comments on a Marine-Derived Parasite Lineage in South America

Journal of Parasitology ◽

10.1645/19-27 ◽

2019 ◽

Vol 105 (4) ◽

pp. 497 ◽

Cited By ~ 3

Author(s):

Stephen A. Bullard ◽

Jackson R. Roberts ◽

Micah B. Warren ◽

Haley R. Dutton ◽

Nathan V. Whelan ◽

...

Keyword(s):

South America ◽

River Basin ◽

Amazon River ◽

New Genera ◽

Amazon River Basin ◽

Parasite Lineage ◽

Blood Flukes

Download Full-text

Paypayrola Arenacea(Violaceae), a New Species with an Unusual Life-Form from a White Sand Savanna in the Amazon River Basin of Venezuela

Harvard Papers in Botany ◽

10.3100/hpib.v19iss2.2014.n2 ◽

2014 ◽

Vol 19 (2) ◽

pp. 175-184 ◽

Cited By ~ 1

Author(s):

Gerardo Aymard-C ◽

Lisa M. Campbell ◽

Gustavo A. Romero-González

Keyword(s):

New Species ◽

River Basin ◽

Life Form ◽

Amazon River ◽

Amazon River Basin ◽

White Sand ◽

A New Species

Download Full-text

A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru

Zootaxa ◽

10.11646/zootaxa.4820.2.6 ◽

2020 ◽

Vol 4820 (2) ◽

pp. 323-336

Author(s):

DARIO R. FAUSTINO-FUSTER ◽

HERNÁN ORTEGA

Keyword(s):

New Species ◽

River Basin ◽

Morphological Analysis ◽

Valid Species ◽

Amazon River ◽

Freshwater Species ◽

X Rays ◽

Amazon River Basin ◽

A New Species ◽

Pelvic Fin

Mastiglanis is a genus of heptapterid catfish represented by two valid species. These freshwater species are widely distributed along the Amazon, Orinoco, and Maroni River basins. However, a taxonomic review of specimens collected in the Putumayo and Nanay rivers, Amazon River basin in Peru revealed a new species of Mastiglanis. A morphological analysis was completed for morphometric (36 measurements) and meristic (20 counts) data. Osteological counts and descriptions were made from clear and stained specimens and x-rays images. The new species of Mastiglanis differs from M. asopos and M. durantoni by having a long pelvic fin, short snout, eight branched anal-fin rays, and a higher number of vertebrae and gill rakers. The distribution of the new species is restricted to the upper Amazon River basin.

Download Full-text

Revision of Tympanopleura Eigenmann (Siluriformes: Auchenipteridae) with description of two new species

Neotropical Ichthyology ◽

10.1590/1982-0224-20130220 ◽

2015 ◽

Vol 13 (1) ◽

pp. 1-46 ◽

Cited By ~ 8

Author(s):

Stephen J. Walsh ◽

Frank Raynner Vasconcelos Ribeiro ◽

Lúcia Helena Rapp Py-Daniel

Keyword(s):

New Species ◽

River Basin ◽

The Body ◽

Junior Synonym ◽

Amazon River ◽

Middle Portion ◽

Amazon River Basin ◽

Two New Species ◽

Gas Bladder ◽

Adult Body

The Neotropical catfish genus Tympanopleura, previously synonymized within Ageneiosus, is revalidated and included species are reviewed. Six species are recognized, two of which are described as new. Tympanopleura is distinguished from Ageneiosus by having an enlarged gas bladder not strongly encapsulated in bone; a prominent pseudotympanum consisting of an area on the side of the body devoid of epaxial musculature where the gas bladder contacts the internal coelomic wall; short, blunt head without greatly elongated jaws; and smaller adult body size. Species of Tympanopleura are distinguished from each other on the basis of unique meristic, morphometric, and pigmentation differences. Ageneiosus melanopogon and Tympanopleura nigricollis are junior synonyms of Tympanopleura atronasus. Tympanopleura alta is a junior synonym of Tympanopleura brevis. A lectotype is designated for T. brevis. Ageneiosus madeirensis is a junior synonym of Tympanopleura rondoni. Tympanopleura atronasus, T. brevis, T. longipinna, and T. rondoni are relatively widespread in the middle and upper Amazon River basin. Tympanopleura cryptica is described from relatively few specimens collected in the upper portion of the Amazon River basin in Peru and the middle portion of that basin in Brazil. Tympanopleura piperata is distributed in the upper and middle Amazon River basin, as well as in the Essequibo River drainage of Guyana.

Download Full-text

Three new species of Tovomita (Clusiaceae) from the Amazon River basin and first record of papillae for Tovomita

Plant Systematics and Evolution ◽

10.1007/s00606-016-1321-7 ◽

2016 ◽

Vol 302 (8) ◽

pp. 1121-1134 ◽

Cited By ~ 3

Author(s):

Lucas C. Marinho ◽

Pedro Fiaschi ◽

Francisco de Assis R. dos Santos ◽

André M. Amorim

Keyword(s):

New Species ◽

River Basin ◽

First Record ◽

Amazon River ◽

Amazon River Basin ◽

Three New Species

Download Full-text

A new phreatic catfish of the genus Phreatobius Goeldi 1905 from groundwaters of the Iténez River, Bolivia (Siluriformes: Heptapteridae)

Zootaxa ◽

10.11646/zootaxa.1626.1.4 ◽

2007 ◽

Vol 1626 (1) ◽

pp. 51-58 ◽

Cited By ~ 4

Author(s):

LUIS FERNANDEZ ◽

LISANDRO J. SAUCEDO ◽

FERNANDO M. CARVAJAL-VALLEJOS ◽

SCOTT A. SCHAEFER

Keyword(s):

New Species ◽

River Basin ◽

River Mouth ◽

Amazon River ◽

Neural Spine ◽

Amazon River Basin ◽

Caudal Fin ◽

Near Surface ◽

Fin Ray ◽

Fin Rays

Phreatobius sanguijuela, new species, is described from an artificial well located within the Río Paraguá drainage, a tributary of the Río Iténez, Bolivia. The new species is distinguished from its sole congener, P. cisternarum, by the absence of eyes, presence of 25–34 (versus 42–50) dorsal procurrent caudal-fin rays, 14–16 (versus 22–26) ventral procurrent caudal-fin rays, and 45–46 (versus 54–59) vertebrae. Both Phreatobius species are phreatic and known only from artificial wells penetrating near-surface aquifers of the Amazon River basin. Material of the new species represents the first records of Phreatobius from the upper Amazon, some 2000 km from reported locations of P. cisternarum near the Amazon River mouth. Phreatobius can be readily distinguished among siluriforms by the following combination of characters: dorsal and ventral procurrent caudal-fin rays extended rostrally, continuous with anal fin ventrally; caudal fin round; anal-fin rays unbranched; mouth prognathous, with jaws displaced dorsally on head; adductor mandibulae muscle hypertrophied, covering most of skull and posteriorly inserting onto first neural spine; first pectoral-fin ray soft, not spinous; bright red in life. This species is under severe threat from overexploitation by local people, who routinely capture and destroy it on the presumption that it represents a dangerous parasite.

Download Full-text

Genetic Diversity and Potential Paths of Transmission of Mycobacterium bovis in the Amazon: The Discovery of M. bovis Lineage Lb1 Circulating in South America

Frontiers in Veterinary Science ◽

10.3389/fvets.2021.630989 ◽

2021 ◽

Vol 8 ◽

Author(s):

Paulo Alex Carneiro ◽

Cristina Kraemer Zimpel ◽

Taynara Nunes Pasquatti ◽

Taiana T. Silva-Pereira ◽

Haruo Takatani ◽

...

Keyword(s):

Genetic Diversity ◽

South America ◽

River Basin ◽

Mycobacterium Bovis ◽

Genomic Diversity ◽

Amazon River ◽

Amazon River Basin ◽

River Region ◽

Significant Difference ◽

Marajó Island

Bovine tuberculosis (bTB) has yet to be eradicated in Brazil. Herds of cattle and buffalo are important sources of revenue to people living in the banks of the Amazon River basin. A better understanding of Mycobacterium bovis (M. bovis) populational structure and transmission dynamics affecting these animals can significantly contribute in efforts to improve their sanitary status. Herein, we sequenced the whole genome of 22 M. bovis isolates (15 from buffalo and 7 from cattle) from 10 municipalities in the region of the Lower Amazon River Basin in Brazil and performed phylogenomic analysis and Single Nucleotide Polymorphism (SNP)-based transmission inference to evaluate population structure and transmission networks. Additionally, we compared these genomes to others obtained in unrelated studies in the Marajó Island (n = 15) and worldwide (n = 128) to understand strain diversity in the Amazon and to infer M. bovis lineages. Our results show a higher genomic diversity of M. bovis genomes obtained in the Lower Amazon River region when compared to the Marajó Island, while no significant difference was observed between M. bovis genomes obtained from cattle and buffalo (p ≥ 0.05). This high genetic diversity is reflected by the weak phylogenetic clustering of M. bovis from the Lower Amazon River region based on geographic proximity and in the detection of only two putative transmission clusters in the region. One of these clusters is the first description of inter-species transmission between cattle and buffalo in the Amazon, bringing implications to the bTB control program. Surprisingly, two M. bovis lineages were detected in our dataset, namely Lb1 and Lb3, constituting the first description of Lb1 in South America. Most of the strains of this study (13/22) and all 15 strains of the Marajó Island carried no clonal complex marker, suggesting that the recent lineage classification better describe the diversity of M. bovis in the Amazon.

Download Full-text