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Issue: Vol. 5133 No. 4: 6 May 2022
Type: Article
Published: 2022-05-06
DOI: 10.11646/zootaxa.5133.4.5
Page range: 543-554
Abstract views: 380
PDF downloaded: 26

Redescription of the goby Glossogobius tenuiformis Fowler, 1934 (Teleostei: Gobiidae) and assignment of Oman Glossogobius populations: a morpho-molecular approach

Department of Marine Science and Fisheries, Sultan Qaboos University, Muscat, Oman.
Ichthyology and Molecular Systematics Research Laboratory, Department of Biology, School of Science, Shiraz University, Shiraz, Iran.
Department of Biology, Faculty of Sciences, Lorestan University, 6815144316 Khorramabad, Iran.
Ichthyology and Molecular Systematics Research Laboratory, Department of Biology, School of Science, Shiraz University, Shiraz, Iran.
Museum and Art Gallery of the Northern Territory, P.O. Box 4646, Darwin, Northern Territory 0801, Australia; Museum of Tropical Queensland, 102 Flinders Street, Townsville, Queensland 4810, Australia.
Pisces Glossogobius giuris species complex DNA barcoding Freshwater gobies Biodiversity South Africa Oman

Abstract

Glossogobius giuris was originally described as Gobius giuris from the Ganges River, India. However, based on the uncertainty of its type locality and its apparent widespread distribution, a comprehensive study is being carried out to define the correct taxonomic status of this taxon. The South African population of the Glossogobius from St. Lucia Lake, KwaZulu-Natal was described as Glossogobius tenuiformis by Fowler in 1934. It has usually been considered as Glossogobius giuris but Hoese and Hammer indicated that it was a distinct species (2021: 83). Here, based on morphological characters and a molecular data set, we redescribe Glossogobius tenuiformis and assign the Oman populations of Glossogobius to this species. Glossogobius tenuiformis is distinguished from G. giuris by the absence or very short (and often only a few papillae long) sensory papilla line 6; presence of single rows of the sensory papillae in each cheek line, 12–16 pre-dorsal scale counts, and 1+1+9–11, usually 1+1+10, gill rakers on outer face of first arch. Glossogobius tenuiformis is also distinguished by molecular characters. Glossogobius tenuiformis shows 16% genetic distance with other members of this species complex, that includes G. laticeps from Vietnam, Bangladesh and China, G. giuris from South Africa and India and “giuris C” from India, Myanmar, Nepal, Bangladesh and Vietnam, and the highest genetic distance (24%) with G. circumspectus.

 

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