Neotropical Ichthyology最新文献_第3页

Filling in a biogeographic gap: the first Trichomycteridae from the Parnaíba River basin (Siluriformes: Trichomycteridae) 填补生物地理空白:Parnaíba河流域第一毛滴虫科(志龙目:毛滴虫科)

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-05-12 DOI: 10.1590/1982-0224-2023-0018

L. Donin, M. Pinna, W. Severi, T. Ramos

{"title":"Filling in a biogeographic gap: the first Trichomycteridae from the Parnaíba River basin (Siluriformes: Trichomycteridae)","authors":"L. Donin, M. Pinna, W. Severi, T. Ramos","doi":"10.1590/1982-0224-2023-0018","DOIUrl":"https://doi.org/10.1590/1982-0224-2023-0018","url":null,"abstract":"Abstract Trichomycterid catfishes have long been considered as absent in the Parnaíba River basin, Northeastern Brazil, in what constitutes their most conspicuous gap in geographic distribution. Herein we report on the first occurrence of the family in that basin. The new species is described from the riacho da Volta, right tributary to the upper rio Parnaíba, Piauí State. It is distinguished from its congeners by the combination of two or three pairs of ribs; 36–38 post Weberian vertebrae; a color pattern composed of round, similar-sized, non-coalescent spots; I,5 pectoral-fin rays; the first haemal arch on the 5th or 6th vertebrae; and the first completely fused (to the tip) haemal spine on the 15th vertebra. A putative autapomorphy is the partial (minimally 50% of their length) or total fusion between the anterior arms of the basipterygium. Preliminary evidence suggests that the new species can be related to northern South American forms, a pattern that fits the general Amazonian relationships of the fishes in the Parnaíba River drainage. Although the new species fills in an important qualitative gap in trichomycterid continental distribution, the taxon is apparently rare and extremely restricted in distribution, with the type series being its only record so far. The paucity of trichomycterids in the Parnaíba remains a puzzling biogeographical phenomenon.","PeriodicalId":19103,"journal":{"name":"Neotropical Ichthyology","volume":"8 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67200620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic connectivity in the spotted rose snapper Lutjanus guttatus (Lutjaniformes: Lutjanidae) between Mexico and Panama throughout the Tropical Eastern Pacific 墨西哥和巴拿马之间横跨热带东太平洋的斑点玫瑰鲷的遗传连通性(Lutjanus guttatus)

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-05-08 DOI: 10.1590/1982-0224-2022-0113

N. Díaz-Viloria, Adriana Max-Aguilar, Mailin I. Rivera-Lucero, E. Espino-Barr, Nicole Reguera-Rouzaud, Andrea Casaucao-Aguilar, R. Pérez-Enríquez

{"title":"Genetic connectivity in the spotted rose snapper Lutjanus guttatus (Lutjaniformes: Lutjanidae) between Mexico and Panama throughout the Tropical Eastern Pacific","authors":"N. Díaz-Viloria, Adriana Max-Aguilar, Mailin I. Rivera-Lucero, E. Espino-Barr, Nicole Reguera-Rouzaud, Andrea Casaucao-Aguilar, R. Pérez-Enríquez","doi":"10.1590/1982-0224-2022-0113","DOIUrl":"https://doi.org/10.1590/1982-0224-2022-0113","url":null,"abstract":"Abstract The spotted rose snapper, Lutjanus guttatus, is an important fishery species with high potential for aquaculture. Genetic characterization of its natural populations is necessary to avoid stock collapse and loss of genetic diversity. Previous studies carried out in the Tropical Eastern Pacific (TEP), however, have shown contrasting results in the genetic structure of fish populations, particularly in species of Lutjanidae. Therefore, to understand the genetic structure of spotted rose snapper in the TEP, twelve microsatellite loci were used to assess the genetic diversity and explore the hypothesis of population genetic structure in samples of the species collected throughout the TEP. Fin clips from 186 sampled individuals (27 to 49 per site) were analyzed from five sites in the three regional biogeographic provinces, delimited by shoreline reef habitat breaks: La Paz (Cortez province), Colima and Oaxaca (Mexican province), Chiriqui and Port of Panama (Panamic province). Results of global Analysis of Molecular Variance (AMOVA), population pairwise FST, hierarchical AMOVA, and a discriminant analysis of principal components (DAPC) reflected a panmictic population involving the entire set of sampled sites. The role of larval dispersal, post-recruitment migration, and marine current dynamics as drivers of genetic connectivity in this species is discussed.","PeriodicalId":19103,"journal":{"name":"Neotropical Ichthyology","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67200375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new species of Corydoras (Siluriformes: Callichthyidae) from the rio Madre de Dios basin, Peruvian Amazon, with comments on Corydoras aeneus identity 秘鲁亚马逊河流域里约热内卢Madre de Dios盆地一新种(siluriforma: Callichthyidae科)及其身份的评议

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-05-01 DOI: 10.1590/1982-0224-2023-0023

L. F. C. Tencatt, Vandergleison de Carvalho Gomes, Hans-Georg Evers

引用次数: 1

Population level genetic divergence and phylogenetic placement of Mexican shortfin mollies (Mollienesia: Poecilia: Poeciliidae) 墨西哥短鳍鳉的种群水平遗传分化及系统发育定位(鳉亚目:鳉科)

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-05-01 DOI: 10.1590/1982-0224-2022-0101

Maura Palacios, A. A. González-Díaz, Lenin Arias Rodriguez, M. Mateos, R. Rodiles‐Hernández, M. Tobler, G. Voelker

{"title":"Population level genetic divergence and phylogenetic placement of Mexican shortfin mollies (Mollienesia: Poecilia: Poeciliidae)","authors":"Maura Palacios, A. A. González-Díaz, Lenin Arias Rodriguez, M. Mateos, R. Rodiles‐Hernández, M. Tobler, G. Voelker","doi":"10.1590/1982-0224-2022-0101","DOIUrl":"https://doi.org/10.1590/1982-0224-2022-0101","url":null,"abstract":"Abstract Mexico is a megadiverse region with a complex geological history, but it remains unclear to what extent the distribution of freshwater fish has been influenced by geographic barriers. This study examines the population level genetic divergence and phylogenetic relationships of species in the shortfin group of the subgenus Mollienesia (genus Poecilia), a group of live-bearing fishes that are widely distributed across Mexico, with sampling at a small geographic scale. Samples from over 50 locations were analyzed for six species by using phylogenetic and haplotype network approaches to assess genetic diversity across geographic ranges and to refine the distributions of species in this group. The results indicate that Mexican species have diversified following multiple, independent invasions from Middle America. Two species found north of the Trans-Mexican Volcanic Belt (TMVB) and one transversal species exhibited weak phylogenetic structure, likely due to the lack of physiographic barriers, recent colonization, and high dispersal rates among regions. In contrast, three species found south of the TMVB exhibited strong phylogenetic structure, reflecting a longer presence in the area and multiple physiographic barriers that isolated populations. This study identified mechanisms driving divergence and speciation, expanded the known range of several species, and resolved taxonomic uncertainties of populations.","PeriodicalId":19103,"journal":{"name":"Neotropical Ichthyology","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67200314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A new Poptella from the rio Xingu basin, Brazil (Characiformes: Characidae) 巴西新古盆地一新Poptella(特征:特征科)

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-04-28 DOI: 10.1590/1982-0224-2022-0086

James R. Garcia-Ayala, R. C. Benine

引用次数: 0

New species of Farlowella (Siluriformes: Loricariidae) from the rio Tapajós basin, Pará, Brazil 巴西par<e:1>里约热内卢Tapajós盆地法蝇属新种(siluriforma: Loricariidae)

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-04-28 DOI: 10.1590/1982-0224-2022-0097

Manuela Dopazo, W. B. Wosiacki, M. R. Britto

引用次数: 0

Early life history of two Neotropical Triportheidae fish (Characiformes) 两种新热带三鱼科鱼类的早期生活史(特征)

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-04-14 DOI: 10.1590/1982-0224-2022-0102

R. Cajado, F. Silva, L. Oliveira, Zaqueu Santos, A. Bialetzki, D. Zacardi

{"title":"Early life history of two Neotropical Triportheidae fish (Characiformes)","authors":"R. Cajado, F. Silva, L. Oliveira, Zaqueu Santos, A. Bialetzki, D. Zacardi","doi":"10.1590/1982-0224-2022-0102","DOIUrl":"https://doi.org/10.1590/1982-0224-2022-0102","url":null,"abstract":"Abstract The early ontogeny of Triportheus albus and T. angulatus, two fish species of Triportheidae, is described using morphological, meristic, and morphometric characters. These species are exploited by subsistence fisheries and have potential as an alternative source of fish, given the decline in the natural stocks of other commercially important fish species in the Amazon. The specimens were collected in the open water limnetic zone, under of the macrophyte stands, and in subsurface areas near sandbars in the Amazon basin. Intra and interspecific morphometric analyzes were performed to evaluate growth models between species. The combination of color pattern, body morphology, morphometric proportions and myomeres number distinguishes the species from each other and from other congeners. Some morphometric relationships related to head as snout length and eye diameter as well as length from the snout to the origins of anal and length from the snout to the origins of pelvic, related with standard length were different between the two species of Triportheus, reflecting different growth models between them. An identification key for larvae and juveniles of some species of Triportheus from the Eastern Amazon is presented.","PeriodicalId":19103,"journal":{"name":"Neotropical Ichthyology","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67200324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new species of barred Sternopygus (Gymnotiformes: Sternopygidae) from the Orinoco River 文章标题奥里诺科河斑胸蟹一新种(裸子目:胸蟹科)

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-04-14 DOI: 10.1590/1982-0224-2022-0088

Kevin T. Torgersen, Aleidy M. Galindo-Cuervo, R. Reis, J. Albert

{"title":"A new species of barred Sternopygus (Gymnotiformes: Sternopygidae) from the Orinoco River","authors":"Kevin T. Torgersen, Aleidy M. Galindo-Cuervo, R. Reis, J. Albert","doi":"10.1590/1982-0224-2022-0088","DOIUrl":"https://doi.org/10.1590/1982-0224-2022-0088","url":null,"abstract":"Abstract A new species of Sternopygus is described from the Orinoco River of Venezuela using traditional methods of morphometrics and meristics, and micro-computed tomography (micro-CT) imaging for osteological analysis. The new species is readily separated from all congeners in having broad, vertical pigment bars that extend from the mid-dorsum to the ventral margin of the pterygiophores. A similar color pattern, characterized by subtle differences in the densities and sizes of chromatophores, is also present in juveniles of S. obtusirostris from the Amazon River, juveniles of S. sabaji from rivers of the Guiana Shield, and S. astrabes from clearwater and blackwater terra firme streams of lowlands around the Guiana Shield. The new species further differs from other congeners in the Orinoco basin by having a reduced humeral pigment blotch with poorly defined margins, a proportionally smaller head, a longer body cavity, a more slender body shape in lateral profile, and in having vertical pigment bars that extend ventrally to the pterygiophores (vs. pigment saddles not reaching the pterygiophores). The description of this species raises to three the number of Sternopygus species in the Orinoco basin, and to 11 the total number of Sternopygus species.","PeriodicalId":19103,"journal":{"name":"Neotropical Ichthyology","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67200660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A new species of Rineloricaria (Siluriformes: Loricariidae) from coastal drainages of Rio de Janeiro, southeastern Brazil 文章标题巴西东南部里约热内卢沿海流域蛭形蝇属一新种(蛭形目:蛭形蝇科)

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-04-07 DOI: 10.1590/1982-0224-2022-0083

{"title":"A new species of Rineloricaria (Siluriformes: Loricariidae) from coastal drainages of Rio de Janeiro, southeastern Brazil","authors":"","doi":"10.1590/1982-0224-2022-0083","DOIUrl":"https://doi.org/10.1590/1982-0224-2022-0083","url":null,"abstract":"Abstract A new species of Rineloricaria is described from the Iguaçu, Magé, Saracuruna, Guapiaçu, Macacu, Macaé, and Paraíba do Sul River basins in southeastern Brazil based on morphological and molecular data. The new species is diagnosed among congeners by the combination of the following characters: absence of plates in most of the ventral surface of pectoral girdle; snout tip with elliptical naked area reaching posteriorly the anteriormost pore of the infraorbital ramus of sensory canal; dorsal-fin spinelet present; supraoccipital and predorsal plates with smooth keels; five series of lateral plates below the dorsal fin; median and mid-ventral series of plates with well-developed keels. The new species is distinguished from congeners that inhabit the rivers draining the Serra do Mar in Rio de Janeiro state by the partial plate coverage of the ventral surface of the pectoral girdle and the abdomen (vs. pectoral girdle and abdomen completely covered by plates in Rineloricaria nigricauda, R. steindachneri, and R. zawadzkii). The new species shares the absence of plates on the abdominal surface with other species from the Paraná, Uruguay, and other Brazilian coastal river basins.","PeriodicalId":19103,"journal":{"name":"Neotropical Ichthyology","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67200602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Dynamics of fish larvae recruitment in the hydrographic basin of the Paraguay River in western Brazil 巴西西部巴拉圭河流域鱼类幼鱼补充的动态

IF 1.7 4区生物学

Neotropical Ichthyology Pub Date : 2023-04-03 DOI: 10.1590/1982-0224-2022-0034

T. P. D. Sousa, A. Bialetzki, L. Mateus

{"title":"Dynamics of fish larvae recruitment in the hydrographic basin of the Paraguay River in western Brazil","authors":"T. P. D. Sousa, A. Bialetzki, L. Mateus","doi":"10.1590/1982-0224-2022-0034","DOIUrl":"https://doi.org/10.1590/1982-0224-2022-0034","url":null,"abstract":"Abstract The conservation of fish assemblages depends on the longitudinal and lateral connectivity between riverine habitats, in particular during the breeding season and the initial development. This study investigated the composition and spatio-temporal structure in the ichthyoplankton of the hydrographic basin of the Paraguay River in western Brazil to identify the local spawning grounds and the importance of the longitudinal connectivity of economically valuable migratory species. Data were collected at 10 sites between two breeding seasons (2017/2018 and 2018/2019). Were collected 8,635 larvae, representing 55 taxa in 25 families, including the migratory species Brycon hilarii, Hemisorubim platyrhynchos, Piaractus mesopotamicus, Prochilodus lineatus, Pseudoplatystoma spp., Salminus brasiliensis, Sorubim lima, and Zungaro jahu, which are important fishery resources, with the highest larval densities being recorded between November and January. The Sepotuba, Paraguay, Jauru, and Cabaçal rivers were the areas of greatest connectance, and should thus be considered critical for the conservation of the longitudinal connectivity of this fluvial system, indicating that the migratory species spawn upriver. More efficient fisheries management mechanisms are needed, respecting the spawning period of migratory species, maintaining quality and longitudinal connectivity between habitats, and characteristics necessary for successful larval recruitment.","PeriodicalId":19103,"journal":{"name":"Neotropical Ichthyology","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67200184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0