Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Mais filtros










Base de dados
Assunto principal
Intervalo de ano de publicação
2.
Zootaxa ; 5194(4): 497-518, 2022 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-37045318

RESUMO

The taxonomic status of the keeled back mullets (Teleostei: Mugilidae) has been reinvestigated. Two nominal mugilid species having keeled backs from East Asia: Mugil lauvergnii Eydoux & Souleyet, 1850 and Mugil affinis Günther, 1861 have been re-evaluated through examination of the holotypes and fresh specimens. Comparison of morpho-meristic characters of the holotypes shows that both species are identical. Phylogenetic analysis based on mitochondrial cytochrome c oxidase 1 (CO1) confirmed morphological data by highlighting presence of a single clade from East Asia. Mugil lauvergnii (=Planiliza lauvergnii) is thus the sole keeled back mullet from East Asia and a senior synonym of Mugil affinis (=Planiliza affinis). The taxonomic status of two other keeled back mullets, Planiliza carinata and P. klunzingeri, is also contentious due to their similar morphology. Meristic and morphometric variation as well as sequence divergence between the two species are limited but phylogenetic analyses delineate well-supported clades consistent with biogeography and currently accepted taxonomy. Planiliza carinata and P. klunzingeri share a recent common ancestor in a Maximum Likelihood tree, with separate distribution ranges while P. lauvergnii formed a paraphyletic lineage. Based on present findings, we suggest maintenance of the taxonomic distinction of P. klunzingeri and P. carinata and discuss its evolutionary significance.


Assuntos
Smegmamorpha , Animais , Filogenia , Peixes/genética , Evolução Biológica , Mitocôndrias
3.
Zootaxa ; 4881(1): zootaxa.4881.1.8, 2020 Nov 18.
Artigo em Inglês | MEDLINE | ID: mdl-33311133

RESUMO

This is the first thorough taxonomic study on the identification and description of mullets based on their morphometric and meristic characters distributed in the coastal waters of Pakistan. The samples were collected monthly for two years from different localities of Pakistan. Forty eight parameters including thirty nine morphometric and nine meristic characters were determined. In this study 13 species belongs to seven genera are briefly described including one new record and taxonomic key for these species is developed.


Assuntos
Smegmamorpha , Animais , Família , Paquistão
4.
Front Public Health ; 4: 44, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27047912

RESUMO

INTRODUCTION: The objectives of this study were to identify and assess the impact of capacity-building biosafety initiatives and programs that have taken place in the broader Middle East and North Africa (BMENA) region between 2001 and 2013, to highlight gaps that require further development, and to suggest sustainable ways to build cooperative regional biosafety opportunities. METHODS: A cross-sectional study was conducted with two aspects (1) thorough desktop review of literature for all biosafety/biosecurity-related activities in the study countries, such as seminars, conferences, workshops, policy documents, technology transfer, sustained scientific endeavors between countries, etc. and (2) an online survey of scientists in countries in the region to get first-hand information about biosafety and biosecurity initiatives and gaps in their country. RESULTS: A total of 1832 initiatives of biosafety/biosecurity were recorded from 97 web links; 70.68% (n = 1295) initiatives were focused on raising general awareness among the scientific community about biosafety/biosecurity/biocontainment. The most frequent areas of interest were biorisk management in biomedical and biotechnology laboratories 13% (n = 239), followed by living modified organisms (LMOs) 9.17% (n = 168). Hands-on training accounted for 2.67% (n = 49) of initiatives. Online survey results confirmed desktop review findings; however, the response rate was 11%.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...