INVESTIGADORES
PAZOS gustavo Enrique
artículos
Título:
Epigean tenebrionids (Coleoptera: Tenebrionidae) from Leones and Tova-Tovita islands (Chubut, Argentina): its comparison with the mainland assemblage
Autor/es:
CHELI, GERMÁN H.; MARTÍNEZ, FERNANDO J.; PAZOS, GUSTAVO E.; UDRIZAR SAUTHIER, D.E.; CORONATO, F.; FLORES, GUSTAVO E.
Revista:
ANNALES ZOOLOGICI
Editorial:
POLISH ACAD SCIENCES
Referencias:
Lugar: Bialowieza; Año: 2016 vol. 66 p. 631 - 642
ISSN:
0003-4541
Resumen:
The Parque Interjurisdiccional Marino Costero Patagonia Austral (PIMCPA) protects over 180 km of Patagonian Atlantic coastline of northern San Jorge gulf, including an archipelago that comprises more than 39 islands. In this work, we studied the darkling beetles (Coleoptera: Tenebrionidae) of the two largest islands in the PIMCPA archipelago: Leones and Tova-Tovita. Tenebrionids are reported for first time in these islands, in addition, we described their species assemblage. Likewise, a comparison between the islands and the mainland was also performed. The GLM, MDS, ANOSIM and PCA methods were employed. Islands shares the same tenebrionid species assemblage but they differ from that displayed by the mainland. Considering both islands as a whole, the insular assemblage shows lower species richness and diversity than those seen in the mainland. We identified eight species in the islands  which belong to eight genera and four tribes. We also found that six of these species were shared among islands, while Psectrascelis punctipennis Kulzer was recorded as exclusive to Tova-Tovita island and Platesthes kuscheli Kulzer was only present in Leones island. Although there are no endemic species. The island assemblage is mainly composed of nocturnal or crepuscular species [including Praocis (Hemipraocis) sellata bergi Burmeister, Patagonogenius quadricollis (Fairmaire), Emmallodera crenaticostata crenaticostata Blanchard and Scotobius akidioides akidioidesWaterhouse], while several diurnal species of Nyctelia Berthold are the most common and diverse darkling beetles among mainland fauna. Additionally, we discuss the effects of the mainland distance, paleoclimate, and the origin of insular assembles. Finally, other insular implications of tenebrionid beetles are discussed.