Morphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.

The pouched lamprey, Geotria australis Gray, 1851, has long been considered monotypic in the Geotriidae family with a wide southern temperate distribution across Australasia and South America. Recent studies have provided molecular and morphological evidence for a second Geotria species in South Ame...

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Autores principales:	Cindy F Baker, Carla Riva Rossi, Pamela Quiroga, Emily White, Peter Williams, Jane Kitson, Christopher M Bice, Claude B Renaud, Ian Potter, Francisco J Neira, Claudio Baigún
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/92c71e7d9b0445f18cb60fb65f35e49a
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spelling	oai:doaj.org-article:92c71e7d9b0445f18cb60fb65f35e49a2021-12-02T20:05:42ZMorphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.1932-620310.1371/journal.pone.0250601https://doaj.org/article/92c71e7d9b0445f18cb60fb65f35e49a2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0250601https://doaj.org/toc/1932-6203The pouched lamprey, Geotria australis Gray, 1851, has long been considered monotypic in the Geotriidae family with a wide southern temperate distribution across Australasia and South America. Recent studies have provided molecular and morphological evidence for a second Geotria species in South America; Geotria macrostoma (Burmeister, 1868). The aim of this study was to determine morphometric and physical characteristics of adult G. macrostoma that further differentiate this re-instated species of Geotriidae from G. australis. The diagnostic features discriminating immature adult G. macrostoma from G. australis when entering fresh water, are distinct differences in dentition, oral papillae and fimbriae counts and differences in coloration. In addition, G. macrostoma display greater growth of the prebranchial region and oral disc and has a deeper body depth and higher condition factor. All current ecological knowledge of the genus Geotria is based on Australasian populations, which may not be applicable to G. macrostoma. To ensure the conservation and protection of the Patagonian lamprey as a re-identified species, further investigations are needed to understand its life history, biology and ecology throughout its range.Cindy F BakerCarla Riva RossiPamela QuirogaEmily WhitePeter WilliamsJane KitsonChristopher M BiceClaude B RenaudIan PotterFrancisco J NeiraClaudio BaigúnPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 5, p e0250601 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Cindy F Baker Carla Riva Rossi Pamela Quiroga Emily White Peter Williams Jane Kitson Christopher M Bice Claude B Renaud Ian Potter Francisco J Neira Claudio Baigún Morphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.
description	The pouched lamprey, Geotria australis Gray, 1851, has long been considered monotypic in the Geotriidae family with a wide southern temperate distribution across Australasia and South America. Recent studies have provided molecular and morphological evidence for a second Geotria species in South America; Geotria macrostoma (Burmeister, 1868). The aim of this study was to determine morphometric and physical characteristics of adult G. macrostoma that further differentiate this re-instated species of Geotriidae from G. australis. The diagnostic features discriminating immature adult G. macrostoma from G. australis when entering fresh water, are distinct differences in dentition, oral papillae and fimbriae counts and differences in coloration. In addition, G. macrostoma display greater growth of the prebranchial region and oral disc and has a deeper body depth and higher condition factor. All current ecological knowledge of the genus Geotria is based on Australasian populations, which may not be applicable to G. macrostoma. To ensure the conservation and protection of the Patagonian lamprey as a re-identified species, further investigations are needed to understand its life history, biology and ecology throughout its range.
format	article
author	Cindy F Baker Carla Riva Rossi Pamela Quiroga Emily White Peter Williams Jane Kitson Christopher M Bice Claude B Renaud Ian Potter Francisco J Neira Claudio Baigún
author_facet	Cindy F Baker Carla Riva Rossi Pamela Quiroga Emily White Peter Williams Jane Kitson Christopher M Bice Claude B Renaud Ian Potter Francisco J Neira Claudio Baigún
author_sort	Cindy F Baker
title	Morphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.
title_short	Morphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.
title_full	Morphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.
title_fullStr	Morphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.
title_full_unstemmed	Morphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.
title_sort	morphometric and physical characteristics distinguishing adult patagonian lamprey, geotria macrostoma from the pouched lamprey, geotria australis.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/92c71e7d9b0445f18cb60fb65f35e49a
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Morphometric and physical characteristics distinguishing adult Patagonian lamprey, Geotria macrostoma from the pouched lamprey, Geotria australis.

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