Results 41 to 50 of about 1,395 (186)

Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae) Diferenciación morfológica y genética entre poblaciones chilenas de Bufo spinulosus (Anura: Bufonidae)

Revista Chilena de Historia Natural, 2004
Bufo spinulosus has a wide and fragmented range distribution in Chile (18° to 33° S) along altitudinal and latitudinal gradients. Genetic variation was estimated using RAPD (Random Amplified Polymorphic DNA) markers in 10 populations from ...
Marco A. Méndez, Eduardo R. Soto, Claudio Correa, Alberto Veloso, Eliseo Vergara, Michel Sallaberry, Patricia Iturra   +6 more
doaj  

Lack of genetic differentiation among size groups of jumbo squid (Dosidicus gigas)

Ciencias Marinas, 2009
The population structure of the jumbo squid (Dosidicus gigas) is complex, containing several cohorts and three groups defined by their size (small, medium, and large) and by differences in maturation, growth, and life span.
E Sandoval-Castellanos, M Uribe-Alcocer, P Díaz-Jaimes   +2 more
doaj   +1 more source

First Assessment of Genetic Diversity, Phylogeographic Relationships, and Population Structure of the Brown Seaweed Ericaria amentacea From Italian Coasts Using Cytochrome Oxidase Subunit I (COI) Gene

Ecology and Evolution, Volume 16, Issue 7, July 2026.
First assessment of genetic diversity, phylogeographic relationships, and population structure of the brown seaweed Ericaria amentacea from Italian. ABSTRACT Ericaria amentacea is an endemic key seaweed species in the coastal ecosystem of the Mediterranean basin. Given its ecological role and sensitivity to environmental conditions decline, it has been
Maha Moussa, Sarra Choulak, Valentina Asnaghi, Daniele Grech, Gareth Anthony Pearson, Khaled Said, Mariachiara Chiantore, Sonia Scarfi   +7 more
wiley   +1 more source

Variabilidad y diferenciación genética en cuatro poblaciones de la planta medicinal Psychotria acuminata en Costa Rica

Agronomía Costarricense, 2003
Un total de 51 accesiones de Psychotria acuminata, provenientes de 4 poblaciones en Costa Rica, fueron evaluadas con los marcadores moleculares RAPD (Random Amplified Polymorphic DNA) e ISSR (Inter-Simple Sequence Repeat DNA).
Alfonso Lara, Roberto Valverde, Oscar Rocha, Luis Gómez   +3 more
doaj  

Flowcytometric and Allozymic Studies on the Korean Dandelion (Taraxacum, Asteraceae), With Special Reference to the Hybrid Origin of Taraxacum coreanum Nakai

Plant Species Biology, Volume 41, Issue 4, July 2026.
We found that the Korean tetraploid Taraxacum coreanum (Co) shows fixed heterozygosity at two dimeric enzyme loci, sod‐1 (aaab) and mdh‐1 (bddd). Allele‐specific comparisons indicate that sod‐1 ‘a’ and mdh‐1 ‘d’ are characteristic of the triploid T. mongolicum (Mo) whereas the ‘b’ alleles at both loci match Korean diploids (e.g., T. hallaisanense, Ha).
Tatsuyoshi Morita, Mie Toyama, Fumie Yokoyama, Takako Nishino, Hiroyuki Shibaike, Motomi Ito, Jae‐Hong Pak   +6 more
wiley   +1 more source

Diversidad genética de accesiones de la familia Caricaceae en el sur de Ecuador

Maskana, 2017
Se estudió la diversidad genética de 78 accesiones de la familia Caricaceae recolectadas en las provincias de Azuay, Cañar, Loja, Zamora Chinchipe y El Oro, al sur de Ecuador, de las especies Vasconcellea candicans, V. goudotiana, V.
Denisse F. Peña T., Paulina G. Villena O., Ángel J. Aguirre, Carlos Jiménez M.   +3 more
doaj   +1 more source

Peer review of the pesticide risk assessment of the active substance Trichoderma harzianum T78

EFSA Journal, Volume 24, Issue 7, July 2026.
Abstract The conclusions of the European Food Safety Authority (EFSA) following the peer review of the initial risk assessments carried out by the competent authority of the rapporteur Member State, The Netherlands, for the pesticide active substance Trichoderma harzianum T78 and the considerations as regards the inclusion of the substance in Annex IV ...
European Food Safety Authority (EFSA), Fernando Álvarez, Maria Arena, Domenica Auteri, Sofia Batista Leite, Marco Binaglia, Anna Federica Castoldi, Arianna Chiusolo, Angelo Colagiorgi, Mathilde Colas, Federica Crivellente, Chloe De Lentdecker, Isabella De Magistris, Mark Egsmose, Gabriella Fait, Franco Ferilli, German Giner Santonja, Varvara Gouliarmou, Alessio Ippolito, Frederique Istace, Dimitra Kardassi, Aude Kienzler, Anna Lanzoni, Roberto Lava, Renata Leuschner, Alberto Linguadoca, Mariano Lopez Romano, Jochem Louisse, Christopher Lythgo, Oriol Magrans, Iris Mangas, Silvia Mazzega, Andrea Mioč, Ileana Miron, Tunde Molnar, Laura Padovani, Vincenzo Padricello, Martina Panzarea, Juan Manuel Parra Morte, Simone Rizzuto, Miguel Santos, Adriana Scattareggia Marchese, Rositsa Serafimova, Rachel Sharp, Csaba Szentes, Anne Theobald, Manuela Tiramani, Giorgia Vianello, Laura Villamar‐Bouza   +48 more
wiley   +1 more source

Peer review of the pesticide risk assessment of the active substance Trichoderma asperellum T34

EFSA Journal, Volume 24, Issue 7, July 2026.
Abstract The conclusions of the European Food Safety Authority (EFSA) following the peer review of the initial risk assessments carried out by the competent authorities of the rapporteur Member State Sweden and co‐rapporteur Member State Italy for the pesticide active substance Trichoderma asperellum T34 are reported. The context of the peer review was
European Food Safety Authority (EFSA), Fernando Álvarez, Maria Arena, Domenica Auteri, Sofia Batista Leite, Marco Binaglia, Anna Federica Castoldi, Arianna Chiusolo, Angelo Colagiorgi, Mathilde Colas, Federica Crivellente, Chloe De Lentdecker, Isabella De Magistris, Mark Egsmose, Gabriella Fait, Franco Ferilli, German Giner Santonja, Varvara Gouliarmou, Alessio Ippolito, Frederique Istace, Dimitra Kardassi, Aude Kienzler, Anna Lanzoni, Roberto Lava, Renata Leuschner, Alberto Linguadoca, Mariano Lopez Romano, Jochem Louisse, Christopher Lythgo, Oriol Magrans, Iris Mangas, Silvia Mazzega, Andrea Mioč, Ileana Miron, Tunde Molnar, Laura Padovani, Vincenzo Padricello, Martina Panzarea, Juan Manuel Parra Morte, Simone Rizzuto, Miguel Santos, Adriana Scattareggia Marchese, Rositsa Serafimova, Rachel Sharp, Csaba Szentes, Anne Theobald, Manuela Tiramani, Giorgia Vianello, Laura Villamar‐Bouza   +48 more
wiley   +1 more source

Caracterización molecular y germinación de semillas de maíces criollos azules con envejecimiento acelerado.

Agronomía Mesoamericana, 2011
El objetivo del presente estudio fue determinar el efecto del envejecimie nto acelerado en semillas de varie dades criollas de maíz azul. En los laboratorios de la Universidad Nacional Autónoma de México y del Instituto Politécnico Nacional, semillas
Dagoberto Durán-Hernández, Germán Fernando Gutiérrez-Hernández, José Luis Arellano-Vázquez, Elpidio García-Ramírez, Juan Virgen-Vargas   +4 more
doaj   +1 more source

Genetic Structure and Conservation Strategies for the Endangered Catfish Steindachneridion melanodermatum (Siluriformes, Pimelodidae) in the Iguaçu River, Brazil

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT The endemic catfish Steindachneridion melanodermatum from the Iguaçu River basin, southern Brazil, is one of the most threatened pimelodid species. Comprehension of its genetic structure is imperative to the formulation of long‐term efficacious conservation strategies. A genetic analysis was conducted on three populations from the lower Iguaçu
Jesús Hernández‐Gómez, Caio Felipe da Silva, Carolina de Oliveira Magalhães, Bruno Henrique Mattiello, Juliano Tupan Coragem, Ricardo Utsunomia, Fabio Porto‐Foresti, Fernanda Dotti do Prado, Roberto Ferreira Artoni   +8 more
wiley   +1 more source