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Diversity ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 56
Author(s):  
Claudia Andrade ◽  
Cristóbal Rivera ◽  
Erik Daza ◽  
Eduardo Almonacid ◽  
Fernanda Ovando ◽  
...  

The southern king crab Lithodes santolla is one of the most economically important fishery species in the southern waters of the Atlantic and Pacific Oceans. A combination of stomach content and stable isotope analyses was used to reveal the potential dietary characteristics, isotopic niche, overlap among maturity stages and sexes, and trophic relationships of an L. santolla population in the Nassau Bay, Cape Horn region. Stable isotope analyses indicated that L. santolla assimilated energy from a basal carbon source, the giant kelp Macrocystis pyrifera, forming the trophic baseline of the benthic food web. Moreover, the trophic position of L. santolla varied among late juveniles and adults, suggesting that the southern king crab does undergo an ontogenetic diet shift. L. santolla exhibited intraspecific isotopic niche variation, reflecting niche differentiation which allows the species to partition resources. The trophic relationships of L. santolla with the associated fauna suggested some potential interactions for food resources/habitat use when they are limited. This study is the first attempt to characterize the trophic dynamics of the southern king crab in the Cape Horn area and, by generating more data, contributes to the conservation of the king crab population and the long-term management of local fisheries that rely on this resource.


2021 ◽  
Author(s):  
Gustavo Blanco-Wells ◽  
Macarena Libuy ◽  
Alberto Harambour ◽  
Karina Rodríguez
Keyword(s):  

Nauplius ◽  
2021 ◽  
Vol 29 ◽  
Author(s):  
Ivan Cañete ◽  
Alan M. Friedlander ◽  
Enric Sala ◽  
Tania Figueroa
Keyword(s):  

2020 ◽  
Vol 726 ◽  
pp. 83-101
Author(s):  
Ricardo Garilleti ◽  
Belén Albertos ◽  
Isabel Draper ◽  
Juan Antonio Calleja ◽  
Francisco Lara

In 1842, J.D. Hooker collected a number of mosses on Hermite Island (Cape Horn region). From one of those gatherings, Hooker 141, four species of Ulota have been described: U. luteola, U. fuegiana, U. glabella, and U. eremitensis. The first two species are widely accepted, whereas the identity of the latter two has been recently discussed, and the names are now synonymized under U. fuegiana, the more widely distributed species in the Tierra del Fuego archipelago. Our studies, based on recent collections of Orthotrichaceae from Patagonia, show that specimens different from those of U. fuegiana and agreeing with the protologues of both U. glabella and U. eremitensis are common in Patagonia. Comparisons with type material of all four names demonstrate that the type for U. glabella is in such bad condition that it cannot be used, and an epitype should be selected. In this paper, we comment on the whereabouts of the collection Hooker 141 and the species described from it, discuss the distinct identity of U. glabella and its relationship with U. eremitensis as well as its differentiation from other species, present a diagnostic description of U. glabella and, finally, select an epitype to fix the application of this name.


2020 ◽  
Vol 96 (6) ◽  
pp. 1495-1500 ◽  
Author(s):  
Alan Maldonado‐Márquez ◽  
Tamara Contador ◽  
Javier Rendoll‐Cárcamo ◽  
Sabrina Moore ◽  
Carolina Pérez‐Troncoso ◽  
...  

2020 ◽  
pp. 189-194
Author(s):  
Irving Johnson
Keyword(s):  

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