A new species of Aspidoras (Siluriformes: Callichthyidae) from a small coastal drainage in northeastern Brazil

Oliveira, Lívia M. A.; Zanata, Angela M.; Tencatt, Luiz Fernando Caserta; Britto, Marcelo R.

doi:10.1590/1982-0224-20160118

Cited by 3 publications

(8 citation statements)

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“…After exhaustive collection effort, Aspidoras kiriri was found only in a few tributaries of the rio da Dona, in locations that are known to be impacted by farms according to Poelking et al (2015). This species has been classified as Least Concern (LC, IUCN criteria) by Oliveira et al (2017), but the potential population fragmentation and the degree of soil occupation in main tributaries of the upper course of the rio da Dona are alarming to the current the current conservation status of A. kiriri. In the present study, we expanded the distribution of this species to the rio Pancada (a tributary of the rio da Dona basin), at the waterfall Cachoeira do Everaldo.…”

Section: Resultsmentioning

confidence: 99%

“…The headwaters of the rio da Dona are located on the eastern slope of the Serra da Jibóia (Oliveira et al, 2017), between the municipalities of Castro Alves and Elisio Medrado, Bahia, Brazil. This river comprises a drainage area of 776.31 km² and its main channel covers 116.23 km along of the Mata Atlântica (Atlantic Forest) domain, up to the estuary formed with the rio Jaguaripe, near to the Jaguaripe municipality and Itaparica's channel ( Fig.…”

Section: Study Areamentioning

confidence: 99%

“…The fish specimens were identified to the lowest possible taxonomic level, based on identification keys and original descriptions (e.g., Burger et al, 2011;Oliveira et al, 2017), considering the relevant morphological characteristics for each group. For some particular species, specialists were also consulted.…”

Section: Sampling and Taxonomic Analysesmentioning

confidence: 99%

“…The knowledge about the ichthyofauna of the Recôncavo Sul basin is scarce (Burger et al, 2011). Besides these authors, only a few studies involving the fishes from Recôncavo Sul basin have been recently conducted (Birindelli et al, 2013;Oliveira et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Fishes from the rio da Dona, a threatened environment in the Recôncavo Sul basin, Bahia, Brazil

et al. 2020

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The rio da Dona is an important water body in the Recôncavo Sul basin used as a water supply for the neighboring towns and for agriculture, recreation and subsistence fishing. The knowledge about the ichthyofauna of this river is scarce. In this paper, an inventory of the fish fauna from rio da Dona basin and an identification key for the species recorded are presented. Additionally, taxonomic and conservationist issues are discussed. The specimens were collected in different sites along the upper, middle and lower courses of the rio da Dona. The fishes were anesthetized, fixed in formalin, conserved in ethanol, and identified. In addition to the material collected, specimens previously deposited in the ichthyological collection of the Museu de História Natural da Bahia were also analyzed. Twenty species, distributed into 16 genera, ten families, and four orders were recorded. One of these species, Aspidoras kiriri, is endemic to the rio da Dona. Four species, Cichla pinima, Coptodon rendalli, Poecilia reticulata and Serrasalmus brandtii, have been introduced into the river. Higher richness of native species has been recorded in the upper course of the rio da Dona, while in the middle and lower parts non-native species were also representative. Along the river, a series of anthropic impacts were observed, such as deforestation of native forest including the riparian vegetation, silting and dams, which can probably compromised the resident ichthyofauna.

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Section: Resultsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Sampling and Taxonomic Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fishes from the rio da Dona, a threatened environment in the Recôncavo Sul basin, Bahia, Brazil

et al. 2020

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“…systematics of Aspidoras published since its description (e.g., Gosline, 1940;Miranda Ribeiro, 1949;Nijssen & Isbrücker, 1976, 1980Britto, 1998Britto, , 2000Britto, , 2003Lima & Britto, 2001;Britto et al, 2002Britto et al, , 2005Shimabukuro-Dias et al, 2004;Alexandrou et al, 2011;Wosiacki et al, 2014;Leão et al, 2015;Oliveira et al, 2017;Tencatt & Bichuette, 2017), the identity of the genus itself and also of its species is still unclear.…”

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confidence: 99%

A journey through the Amazon Middle Earth reveals Aspidoras azaghal (Siluriformes: Callichthyidae), a new species of armoured catfish from the rio Xingu basin, Brazil

Tencatt

Muriel‐Cunha

Zuanon

et al. 2020

Journal of Fish Biology

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Aspidoras azaghal n. sp. was discovered during a multitaxonomic scientific expedition to the remote Amazon Terra do Meio region in tributaries to the rio Xingu basin, Pará, Brazil. The new species can be promptly distinguished from its congeners by the following combination of features: (a) absence of the first dorsal-fin element; (b) parieto-supraoccipital fontanel located medially on bone; (c) absence of a longitudinal dark-brown or black stripe along flank midline; (d) ventral surface of trunk covered by clearly smaller, irregular and/or roundish platelets; (e) inner laminar expansion of infraorbital 1 well developed; (f) relatively wide frontal bone, with width equal to half of entire length; (g) absence of a thick, longitudinal conspicuous darkbrown stripe along dorsal portion of flank; and (h) poorly developed serrations on posterior margin of the pectoral-fin spine. Besides morphological evidence, the molecular analyses indicated significant differences between the new species and its congeners, with A. albater and A. raimundi as its closest species, showing 6.53% of genetic differentiation in both cases. The intraspecific molecular data revealed gene flow (peer fixation index, FST = 0.05249, P > 0.05, for the cytochrome oxidase I (COI) marker and FST =-0.01466, P > 0.05, for the control region) between specimens upstream and downstream from a 30-m height waterfall at the type-locality, which therefore represent a single population. Furthermore, it was possible to observe a unidirectional gene flow pattern, with genetic diversity increasing in the downstream direction.

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Freshwater fishes of the Bahia State, Northeastern Brazil

et al. 2020

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This work was carried out from the assessment of the conservation status of the freshwater ichthyofauna from Bahia State. The inventory data and species distribution were obtained from the specialized scientific literature and representative ichthyological collections. A total of 281 native species was recorded in Bahia State, distributed in the Northeastern Mata Atlantica (NMA) and São Francisco (SFR) freshwater ecoregions. There was a larger number of species in the NMA (187 spp.), composed by several coastal basins, than in the SFR (134 spp.), composed by São Francisco river basin. Among the 30 families recorded, Characidae and Rivulidae were the most representative, with 53 and 48 species, respectively. The conservation status of 214 species was assessed and 33 of them (15%) were included in the IUCN threat categories. Of these, 11 species were classified as vulnerable (VU), 12 as endangered (EN), and 10 as critically endangered (CR). Most threatened species (n = 14) belongs to the family Rivulidae. The larger number of threatened species in the NMA: (n = 23) is mainly related to the high endemism of restricted-range species associated with the human occupation impacts along the coastal regions. In the SFR, most of threatened species are annual killifishes, which are locally disappearing due to increasing degradation of their temporary habitats.

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A new species of Aspidoras (Siluriformes: Callichthyidae) from a small coastal drainage in northeastern Brazil

Cited by 3 publications

References 14 publications

Fishes from the rio da Dona, a threatened environment in the Recôncavo Sul basin, Bahia, Brazil

Fishes from the rio da Dona, a threatened environment in the Recôncavo Sul basin, Bahia, Brazil

A journey through the Amazon Middle Earth reveals Aspidoras azaghal (Siluriformes: Callichthyidae), a new species of armoured catfish from the rio Xingu basin, Brazil

Freshwater fishes of the Bahia State, Northeastern Brazil

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