Nesting territory characteristics of a migratory South American forest hawk, the White-throated Hawk (Buteo albigula) (Aves: Accipitridae), in temperate rainforest remnants of Araucanía, southern Chile

2013 ◽  
Vol 47 (15-16) ◽  
pp. 1129-1142 ◽  
Author(s):  
Tomás Rivas-Fuenzalida ◽  
Javier Medel H. ◽  
Ricardo Figueroa R.
Zootaxa ◽  
2021 ◽  
Vol 4966 (5) ◽  
pp. 550-562
Author(s):  
JORGE PÉREZ-SCHULTHEISS ◽  
GEORGE D. F. WILSON

A new asellotan isopod of the family Protojaniridae Fresi, Idato & Scipione, 1980 is described from freshwater springs in the Osorno province, Los Lagos region, southern Chile. Wiyufiloides osornoensis gen. & sp. n. is the third South American protojanirid species and the first known groundwater isopod in Chile. The new genus and species is principally characterized by the presence of a vestigial antennal scale, a strongly subchelate pereiopod I and the absence of an apical lobe on the protopod of pleopod II. The new taxon is described in detail and figures are given. 


2018 ◽  
Vol 94 ◽  
Author(s):  
M.T. González ◽  
Z. López ◽  
J.J. Nuñez ◽  
K.I. Calderón-Mayo ◽  
C. Ramírez ◽  
...  

AbstractHookworms of the genus Uncinaria parasitize pinniped pups in various locations worldwide. Four species have been described, two of which parasitize pinniped pups in the southern hemisphere: Uncinaria hamiltoni parasitizes Otaria flavescens and Arctocephalus australis from the South American coast, and Uncinaria sanguinis parasitizes Neophoca cinerea from the Australian coast. However, their geographical ranges and host specificity are unknown. Uncinaria spp. are morphologically similar, but molecular analyses have allowed the recognition of new species in the genus Uncinaria. We used nuclear genetic markers (internal transcribed spacer (ITS) and large subunit (LSU) rDNA) and a mitochondrial genetic marker (cytochrome c oxidase subunit I (COI)) to evaluate the phylogenetic relationships of Uncinaria spp. parasitizing A. australis and O. flavescens from South American coasts (Atlantic and Pacific coasts). We compared our sequences with published Uncinaria sequences. A Generalized Mixed Yule Coalescent (GMYC) analysis was also used to delimit species, and principal component analysis was used to compare morphometry among Uncinaria specimens. Parasites were sampled from A. australis from Peru (12°S), southern Chile (42°S), and the Uruguayan coast, and from O. flavescens from northern Chile (24°S) and the Uruguayan coast. Morphometric differences were observed between Uncinaria specimens from both South American coasts and between Uncinaria specimens from A. australis in Peru and southern Chile. Phylogenetic and GMYC analyses suggest that south-eastern Pacific otariid species harbour U. hamiltoni and an undescribed putative species of Uncinaria. However, more samples from A. australis and O. flavescens are necessary to understand the phylogenetic patterns of Uncinaria spp. across the South Pacific.


2015 ◽  
Vol 80 (4) ◽  
pp. 290-297 ◽  
Author(s):  
Maximiliano Sepúlveda ◽  
Katherine Pelican ◽  
Paul Cross ◽  
Antonieta Eguren ◽  
Randall Singer

2009 ◽  
Vol 67 (3) ◽  
pp. 475-482 ◽  
Author(s):  
Juan Vilata ◽  
Doris Oliva ◽  
Maritza Sepúlveda

Abstract Vilata, J., Oliva, D., and Sepúlveda, M. 2010. The predation of farmed salmon by South American sea lions (Otaria flavescens) in southern Chile. – ICES Journal of Marine Science, 67: 475–482. The South American sea lion Otaria flavescens is abundant off southern Chile. Because Chilean salmon farming has experienced an explosive growth in the past two decades, interactions between O. flavescens and this industry have increased. Fieldwork, including in situ behavioural observations, was carried out at three salmon farms off southern Chile from May to July 2008. The aim was to analyse possible patterns in the interactions and to evaluate whether they were influenced by the endogenous circa-rhythms of the species, prey size, tidal flux, and the use of an acoustic harassment device (AHD). The results showed that the attacks by O. flavescens followed seasonal patterns, with salmon predated more in autumn and winter, and daily patterns, with more interactions at night. In addition, attacks were more frequent on larger salmon, suggesting the existence of a prey-size preference. More sea lions were sighted at the ebb and flow tide peaks, when currents are stronger, suggesting that currents linked to tidal flux might facilitate the access of the sea lions to the farmed salmon. Although the use of AHDs appeared positive at one site, there is a strong suspicion that their efficacy may be site-specific.


2012 ◽  
Vol 47 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Ricardo A. Figueroa R. ◽  
Rodrigo Cádiz ◽  
Rodolfo Figueroa ◽  
E. Soraya Corales ◽  
Roberto Murúa

1989 ◽  
Vol 45 (4) ◽  
pp. 461-488 ◽  
Author(s):  
Barbara Ganson

The Evueví (commonly known as the “Payaguá”), a Guaycuruan tribe in southern South America, dominated the Paraguay and Paraná rivers for more than three centuries. Non-sedentary, similar in nature to the Chichimecas of northern Mexico and the Araucanians of southern Chile, the Evueví were riverine Indians whose life was seriously disrupted by the westward expansion of the Spanish and Portuguese in the Gran Chaco and Mato Grosso regions. This study will identify Evueví strategies for survival and analyze the nature of intercultural contact between the Indian and Spanish cultures. A study of the ethnohistory of the Evueví contributes to an understanding of the cultural adaptation of a non-sedentary indigenous tribe on the Spanish frontier whose salient features were prolonged Indian wars, Indian slavery, and missions. Such an analysis also provides an opportunity to analyze European attitudes and perceptions of a South American indigenous culture. Unlike other Amerindians, the unique characteristic of the Evueví was that Europeans perceived them as river pirates during the colonial era.


PLoS ONE ◽  
2015 ◽  
Vol 10 (12) ◽  
pp. e0145475 ◽  
Author(s):  
María José Parra ◽  
Karina I. Acuña ◽  
Angela Sierra-Almeida ◽  
Camila Sanfuentes ◽  
Alfredo Saldaña ◽  
...  

2019 ◽  
Vol 108 (3) ◽  
pp. 1019-1029 ◽  
Author(s):  
Marcia González‐Teuber ◽  
Claudia Vilo ◽  
María José Guevara‐Araya ◽  
Cristian Salgado‐Luarte ◽  
Ernesto Gianoli

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