Results 61 to 70 of about 1,269 (171)

Fine‐Scale Bioregionalization in a Complex Island System: A Freshwater Perspective From the Greater Antilles

Journal of Biogeography, Volume 53, Issue 1, January 2026.
ABSTRACT Aim The isolated nature of islands makes them particularly vulnerable to climate change. The freshwater fishes of the Greater Antilles remain understudied and are further threatened by habitat fragmentation and the introduction of exotic invasive species.
Sheila Rodríguez‐Machado, Diego J. Elías, Patricia Torres‐Pineda, Daniel Fromm, Prosanta Chakrabarty   +4 more
wiley   +1 more source

Using Noninvasive Magnetic Resonance Imaging for the Visualization of Embryos of the Viviparous Goodeidae (Pisces; Cyprinodontiformes) at Different Developmental Stages

International Journal of Zoology, Volume 2026, Issue 1, 2026.
The study of prenatal interactions of embryonic viviparous Cyprinodontidae (Pisces) can illuminate the evolution of this reproductive mode. Yet the small size, relative scarcity, and conservation status severely limit this potential. Magnetic resonance imaging (MRI) can solve or palliate these limitations.
Claudia Olivera-Tlahuel, Paulina Rocha-Martínez, Constantino Macías Garcia, Lipi Buch   +3 more
wiley   +1 more source

Anthropogenic Factors Drive the Depletion of Fish Functional Β Diversity Within and Outside Two National Reserves in the Peruvian Amazon

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 12, December 2025.
ABSTRACT Understanding the impact of human activities on fish communities is critical for the effective conservation of Amazonian ecosystems. In this study, we sampled environmental DNA (eDNA) from 17 sites (lakes and rivers) in two Peruvian national reserves, Pacaya‐Samiria and Allpahuayo‐Mishana, using a metabarcoding approach with four genetic ...
B. Prat, C. Mariac, J.‐F. Renno, C. García‐Dávila, C. Angulo, G. Estivals, F. Duponchelle   +6 more
wiley   +1 more source

Karyosystematics of Kol tooth-carp, Aphanius darabensis (Teleostei: Cyprinodontidae)

International Journal of Aquatic Biology, 2016
The karyological and cytological characteristics of an endemic cyprinodont fish of Iran, Aphanius darabensis Esmaeili, Teimori, Gholami & Reichenbacher, 2014 have been investigated for the first time by examining metaphase chromosomes spreads obtained ...
Azam Mansoori, Mehregan Ebrahimi, Ali Gholamhosseini, Hamid Reza Esmaeili   +3 more
doaj  

Assessing Current Fish Diversity in the Yellow River Basin by Integrating Large‐Scale Barcoding and Morphological Data

Ecology and Evolution, Volume 15, Issue 12, December 2025.
In this study, 127 sampling points were sampled in the Yellow River Basin, and a DNA barcode database of 3011 sequences and 110 species was constructed. We found that diversity of fish species in the Yellow River Basin has been seriously underestimated.
Chuanjiang Zhou, Ke Ma, Tai Wang, Yongtao Tang, Meng Zhang, Jinhui Yu, Ruyao Liu, Qiqi Ding, Shangjin Qiu, Yikai Li, Zhigang Ma, Guoxing Nie   +11 more
wiley   +1 more source

Pseudobrânquia do guaru Poecilia reticulata (Peter, 1859): análise estrutural, morfométrica e histoquímica para detecção de glicoconjugados

Pesquisa Veterinária Brasileira, 2013
A morfologia, os parâmetros citomorfométricos e os glicoconjugados presentes na pseudobrânquia de guaru, Poecilia reticulata Peter, 1859 (Cyprinodontiformes: Poeciliidae), foram investigados por microscopia de luz acoplada ao sistema de captura e análise
Thiago L. Rocha, Ana P.R. Santos, Simone M.T. Sabóia-Morais   +2 more
doaj   +1 more source

Ictiofauna dulceacuícola y estuarina de la cuenca del golfo de Paria, Venezuela: composición y relaciones biogeográficas con la cuenca del Orinoco

Biota Colombiana, 2010
The Paria Gulf Basin ichthyofauna comprises 218 species arranged in 14 orders and 50 families. Among these, 155 species are considered strictly freshwater and 63 species are euryhaline.
Carlos A. Lasso, Francisco Provenzano, Oscar M. Lasso-Alcalá   +2 more
doaj   +1 more source

A new species of Profundulus (Cyprinodontiformes: Profundulidae) from southeastern Mexico [PDF]

Neotropical Ichthyology
A new species of Profundulus is described from several localities in the Grijalva river basin and rivers of the Isthmus of Tehuantepec, in southern Mexico, using a combination of morphological and molecular data.
Sara Elizabeth Domínguez-Cisneros, Ernesto Velázquez-Velázquez, Omar Domínguez-Domínguez, Rosa Gabriela Beltrán-López   +3 more
doaj   +1 more source

Phylogenetic analysis and taxonomy of the poecilioid fishes (Teleostei: Cyprinodontiformes) [PDF]

Zoological Journal of the Linnean Society, 2000
Abstract Evidence from morphology is used to infer the phylogeny of the superfamily Poecilioidea using other cyprinodontoid fishes as outgroups. The three equally most parsimonious trees resulting from the phylogenetic analysis support the monophyly of the families Anablepidae and Poeciliidae with respect to each other, but the previous taxonomy ...
openaire   +1 more source

Parí­¢metros populacionais de poecilí­­neo em riachos sul-mato-grossenses, Brasil

Boletim do Instituto de Pesca, 2018
Este trabalho objetivou descrever e comparar a estrutura das populações de Phalloceros harpagos nos riachos Perobão e Água Boa, MS, através de parí­¢metros populacionais quantitativos.
Angélica MENDONÇA, Milza Celi Fedatto ABELHA, Valéria Flávia BATISTA-SILVA, Elaine Antoniassi Luiz KASHIWAQUI, Dayani BAILLY, Carlos Alexandre FERNANDES   +5 more
doaj