NDLI: Dietary value of gametophytes and juvenile sporophytes of the brown macroalga Eisenia bicyclis for juvenile abalone Haliotis diversicolor

Content Provider	Springer Nature Link
Author	Onitsuka, Toshihiro Kawamura, Tomohiko Iwanaga, Shunsuke Ohashi, Satoshi Horii, Toyomitsu
Copyright Year	2010
Abstract	The dietary value of juvenile stages (gametophyte and juvenile sporophyte) of the brown macroalga Eisenia bicyclis for post-larval and juvenile abalone Haliotis diversicolor of 2.0–6.5 mm in shell length (SL) was examined and compared with that of a benthic diatom, Nitzschia sp., in laboratory experiments. Most abalone actively fed on these diets, but there were large variations in the growth rate among the diets and among the growth stages of abalone. Growth rates of abalone fed on Nitzschia sp. were highly variable within each growth stage, but showed no clear differences among growth stages. In contrast, in abalone fed gametophytes or juvenile sporophytes, growth rates linearly increased as abalone grew. Growth rates of >60 μm SL/day were observed in juveniles of >3 mm SL fed gametophytes, and juveniles of >5 mm SL fed juvenile sporophytes. These results indicate that the dietary value of the juvenile stages of E. bicyclis for the abalone changes as they grow, and with growth juvenile abalone begin to efficiently utilize gametophytes and juvenile sporophytes in that order.
Starting Page	619
Ending Page	623
Page Count	5
File Format	PDF
ISSN	09199268
Journal	Fisheries Science
Volume Number	76
Issue Number	4
e-ISSN	14442906
Language	English
Publisher	Springer Japan
Publisher Date	2010-06-12
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Abalone Dietary value Gametophyte Juvenile sporophyte Haliotis diversicolor Eisenia bicyclis Food Science Freshwater & Marine Ecology Fish & Wildlife Biology & Management
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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