Centrorhynchus nahuelhuapensisn. sp. (Acanthocephala: Centrorhynchidae) from rufous-legged owl (Strix rufipesKing) in Patagonia

Abstract

Centrorynchus nahuelhuapensis n. sp. is described from the intestine of Strix rufipes, the rufous-legged owl, in Patagonia, Argentina. This species is characterized by the presence of 31–33 hook rows with 16–17 hooks per row, distributed as follows: 5 true hooks, 4 transitional hooks with 4 alate processes, more evident in the first three, 7–8 spiniform hooks, and three cement glands. It differs from most members of the genus by having a filiform body, the arrangement and size of the hooks, the number of cement glands, and egg size. Part of the SSU and LSU genes were sequenced and compared to those in GenBank. Sequences are most similar to other species of Centrorhynchus, supporting their placement within this genus. We present the first molecular study for a species of Centrorhynchus from South America. Additionally, it is the second species of the genus described in Argentina, and the first species of a terrestrial acanthocephalan from a bird in Patagonia.

Helminth and ectoparasitic faunas of the Harris’s hawk, Parabuteo unicinctus (Accipitriformes: Accipitridae), in Chile: new data on host-parasite associations for Neotropical raptors

“…There are several species of Centrorhynchus recorded from South American countries, e.g. Argentina (Drago et al, 2015;Steinauer et al, 2019), Brazil and Ecuador (Travassos, 1926;Yamaguti, 1963;Melo et al, 2013), Nicaragua (Schmidt & Neiland, 1966), Paraguay (Smales, 2013), Colombia and Panama (Thatcher & Nickol, 1972), and Chile (Yamaguti, 1963;Grandón-Ojeda et al, 2018, 2019. For the Harris' hawk, Centrorhynchus virius Smales, 2013 has been recorded from Paraguay (Smales, 2013).…”

Description and molecular analysis of an Italian population of Centrorhynchus globo caudatus (Zeder, 1800) Lühe, 1911 (Acanthocephala: Centrorhynchidae) from Falco tinnunculus (Falconidae) and Buteo buteo (Accipitridae)

“…Actually, the SSU gene would be more adequate to address inter-generic or inter-familiar phylogenetic relationships rather than interspecific ones, as is the case. Unfortunately, as already noted by Steinauer et al (2019), the study of the relationships among centrorhynchid taxa based on molecular data is difficult due to the low number of sequences availablein particular, no SSU gene sequences are available for other genera of Centrorhynchidae. Thus, there is a great lack of information on the genus under study and any additional phylogeny that could be provided for Centrorhynchus can be valuable; this is especially true in the present case, in which a new geographical variant characterized by novel morphological aspects is described.…”