Propagación clonal: Embriogénesis somática y enraizamiento de estaquillas, dos aliados para la producción de cacao en San Martín

El libro titulado “Propagación clonal: Embriogénesis somática y enraizamiento de estaquillas, dos aliados para la producción de cacao en San Martín”, en el cual se pone en manifiesto la descripción secuencial y objetiva de etapas generadas desde el momento de la colecta de explantes (estaminoides de la flor de cacao) hasta la obtención de embriones somáticos primarios durante el proceso de embriogénesis somática. Además, se explica de manera secuencial la metodología y etapas de la técnica de propagación basada en el enraizamiento de estaquillas, proceso que se inicia desde la selección e identificación de plantas madre donadoras, hasta la obtención de plantones aclimatados a nivel de vivero

Morphological and molecular support for Amphithrax verrucosus (H. Milne Edwards, 1832) and Amphithrax aculeatus (Herbst, 1790) (Crustacea, Decapoda, Brachyura) as valid species

The large degree of morphological variations, particularly amongst juveniles, has led to inconsistencies in the literature regarding the taxonomic status of Amphithrax aculeatus (Herbst, 1790) and Amphithrax verrucosus (H. Milne Edwards, 1832). As a result of recent biodiversity sampling initiatives in Barbados, West Indies, multiple specimens of Amphithrax aculeatus and A. verrucosus have been collected. This has prompted us to undertake a thorough reassessment of their morphological and molecular characteristics. Moreover, morphological differences in the carapace, antennae, chelipeds, pereopods and the male first gonopod (G1) supports A. aculeatus and A. verrucosus as separate species. Molecular phylogenetic analysis, based on newly-generated sequences of the 12S rRNA, 16S rRNA and ITS-1 genes also shows that A. verrucosus is a separate species and sister taxa to A. aculeatus. The total number of species within the genus Amphithrax is now brought to eleven. However, our molecular analysis also shows that the taxonomic placement of Amphithrax armatus (Saussure, 1853) within Amphithrax is questionable

Morphological and molecular support for Amphithrax verrucosus (H. Milne Edwards, 1832) and Amphithrax aculeatus (Herbst, 1790) (Crustacea, Decapoda, Brachyura) as valid species

The large degree of morphological variations, particularly amongst juveniles, has led to inconsistencies in the literature regarding the taxonomic status of Amphithrax aculeatus (Herbst, 1790) and Amphithrax verrucosus (H. Milne Edwards, 1832). As a result of recent biodiversity sampling initiatives in Barbados, West Indies, multiple specimens of Amphithrax aculeatus and A. verrucosus have been collected. This has prompted us to undertake a thorough reassessment of their morphological and molecular characteristics. Moreover, morphological differences in the carapace, antennae, chelipeds, pereopods and the male first gonopod (G1) supports A. aculeatus and A. verrucosus as separate species. Molecular phylogenetic analysis, based on newly-generated sequences of the 12S rRNA, 16S rRNA and ITS-1 genes also shows that A. verrucosus is a separate species and sister taxa to A. aculeatus. The total number of species within the genus Amphithrax is now brought to eleven. However, our molecular analysis also shows that the taxonomic placement of Amphithrax armatus (Saussure, 1853) within Amphithrax is questionable

Recruit young scientists and local talent to safeguard coral reefs

Coral reefs are again in the spotlight, having suffered mass mortality over the past two years from global bleaching events. Before reef resilience runs out, researchers must move beyond lamenting corals’ lost pristine state and develop pragmatic solutions. In our view, these are likely to stem from a more diverse set of stakeholders than have participated so far