RESUMO
Corallium rubrum taxonomy is based on morphologic criteria; little is known about its genome. We set up a rapid, easy method based on amplified fragment length polymorphism to characterize the genetic patterns of C. rubrum in an attempt to understand better the evolutionary relations between species from diverse geographic areas and to help define migration patterns. Applying this procedure to C. rubrum specimens from Spain and Italy, we identified 6 AFLP amplification fragments common to the 4 coral populations studied and 4 fragments that differentiated between these populations. Using this characterization we were able to plot a "genetic identity card" of this commercially harvested species, which is also a marker of pollution.
Assuntos
Antozoários/genética , Demografia , Filogenia , Animais , Antozoários/classificação , Eletroforese Capilar , Geografia , Itália , Técnicas de Amplificação de Ácido Nucleico , Polimorfismo de Fragmento de Restrição , EspanhaRESUMO
Tanto las personas que van al litoral marítimo con fines recreativos (bañistas o buceadores) como los que trabajan en el mar (pescadores y pescaderos, transportistas de mercancías, militares, etc.), están expuestas a la toxicidad producida por la picadura o contacto con diversas especies animales que habitan en el mar.En esta revisión se presentan aspectos biológicos y toxicológicos de las especies que, en nuestro medio, son causa frecuente de este tipo de accidentes, como son las medusas, el pez-araña, las anémonas y actinias, los escorpénidos, las rayas y torpedos, y el erizo de mar. (AU)
Assuntos
Animais , Humanos , Mordeduras e Picadas , Fauna Marinha , Toxinas Marinhas/envenenamento , Mordeduras e Picadas/terapia , Venenos de Aranha/envenenamento , Torpedo , Ouriços-do-Mar , Espanha , Venenos de Cnidários/envenenamentoRESUMO
In recent years, particular attention has been paid to coupling and energy transfer between benthos and plankton. Because of their abundance, certain benthic suspension feeders have been shown to have a major impact in marine ecosystems. They capture large quantities of particles and might directly regulate primary production and indirectly regulate secondary production in littoral food chains. Suspension feeders develop dense, three-dimensional communities whose structural complexity depends on flow speed. It has been postulated that these communities can self-organize to enhance food capture and thus establish boundary systems capable of successfully exploiting a less structured system, namely, the plankton.
