ABSTRACT. The genus Leocrates is currently made up of 11 nominal species, of which Leocrates chinensis Kinberg, 1866 is the type species. Kinberg’s original description is brief, and the diagnostic morphological characters are poorly defined. Therefore, numerous subsequent records in different world regions have been considered doubtful. Numerous specimens of Leocrates collected by SCUBA diving in various locations of Robinson Crusoe Island (33°37’S, 78°51’W) in the Juan Fernández Archipelago, between 4 and 10 m depth were examined and determined as a new species herein named Leocrates ernstehlersi n. sp. It is characterized by the size of anterior and posterior eyes, the median chaetigers with scarce notochaetae and neurochaetae per bundle; neurochaetal blades are 4-14 times longer than wide and neuracicular lobes slightly longer than wide. A key to identifying species of Leocrates having large anterior eyes and anterior eyes/prostomial width ratio between 1/4 to 1/8 is also included.Leocrates 2022
Los poliquetos constituyen el grupo faunístico dominante, tanto en fondos blandos como duros, y están ampliamente distribuidos en todas las comunidades marinas, tanto de fondos blandos como también de fondos duros, y están ampliamente distribuidos en todos los ecosistemas marinos; son dominantes, tanto en número de especies, como de individuos y biomasa. En las últimas …
1996 Rozbaczylo et al Micronereis antarctica
1980 Rozbaczylo & Bolados Nereidos de Iquique
1975 Rozbaczylo Namanereis quadraticeps
1973 Rozbaczylo & Castilla Genero Perinereis
Rozbaczylo et al 2004 Poliquetos pelágicos Pacífico suroriental frente a Chile e islas oceánicas RESUMEN. Durante los cruceros de investigación Cimar 5 y Cimar 6, en aguas del Pacífico suroriental frente a Chile e islas oceánicas (isla de Pascua, San Félix, San Ambrosio y archipiélago de Juan Fernández), se recolectaron mediante una red de arrastre …
Neill_et_al_2020_peerj-8560_ ABSTRACT Background. Studies of biological invasions focus on negative interactions between exotic and native biotas, emphasizing niche overlap between species and competitive exclusion. However, the effects of positive interactions and coexistence are poorly known. In this study we evaluate the importance of positive, negative, or random species associations in explaining the coexistence of native …
Native_and_non_indigenous_boring_polycha
PoliquetosdeSudamrica01_04 En este libro se presenta el estado del conocimiento de los poliquetos bentónicos de los países sudamericanos con plataforma continental