NDLI: The potential biodiversity of Ayu, as evidenced by differences in its early development and growth between Vietnam and Japan

Content Provider	Springer Nature Link
Author	Tran, Hau Duc Kishita, Izumi Azuma, Kensaku Iseki, Tomoaki Yagi, Yuta Nube, Jun ichi Ta, Thuy Thi
Copyright Year	2014
Abstract	To examine regional specific diversity in development and growth of Ayu (Plecoglossus altivelis) larvae, we collected and compared collections from the Kalong estuary in Vietnam, and the Shimanto and Muko estuary, and the Niigata coast in Japan. Among the four areas, most of the morphometrics through ontogeny were similar except that the snout tended to be shorter and the anus hardly migrated in Kalong larvae. The snout length increased gradually with growth in the Vietnamese larvae, while this value increased significantly until ca. 10 mm BL, subsequently being constant up to 30 mm body length (BL) in the Japanese larvae. The water temperature when the larvae were collected was higher in the Kalong than in most of the Japan sites. Growth-rates estimated from otolith increments were from highest to lowest, Niigata (mean = 0.54 mm/day), Kalong (0.47), Shimanto (0.38) and Muko (0.34). The higher growth-rates were obtained not in Niigata of highest latitudinal region, but in Kalong of lowest latitudinal region. This indicates that Ayu could experience their early developmental stages from the cool temperate to tropical regions, implying the potential biodiversity of this fish species in the world.
Starting Page	1387
Ending Page	1396
Page Count	10
File Format	PDF
ISSN	03781909
Journal	Environmental Biology of Fishes
Volume Number	97
Issue Number	12
e-ISSN	15735133
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-01-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ayu larvae Biodiversity Development and growth Vietnam Japan Freshwater & Marine Ecology Zoology Animal Systematics/Taxonomy/Biogeography Environment Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics

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Occurrence of Ayu (Plecoglossus altivelis) larvae in northern Vietnam

Growth and development

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