Migratory history of wild and released ayu (Plecoglossus altivelis) in the Kurobe River, Japan
スポンサーリンク
概要
- 論文の詳細を見る
In order to discuss the influence of dam discharge on the movement of ayu Plecoglossus altivelis in a river and the stocking effectiveness of released ayu, the migratory history of 83 juveniles of ayu (standard length=67.9-142.4mm sL) collected in the Kurobe River, Japan during 25 June-23 August 2004 was determined by otolith microchemistry, and the origin of fish was identified as being either native amphidromous ayu or released amphidromous or landlocked fish. Except for otoliths with abnormal morphology (N=10), most specimens (96%, N=70) had inner layers (radius:>400μm) of higher Sr: Ca ratios and outer ones of low values. These specimens were identified as native amphidromous fish that migrated upstream from the sea. Only 4% (N=3) were released ayu (reared fish), which were further divided into two origins, amphidromous fish (N=2) with smaller inner layers (radius:<400μm) of high Sr: Ca ratios, and landlocked fish (N=1) with constantly low values over the whole otolith. There were no specimens with an increase in Sr: Ca ratios in the outer layers of the low Sr: Ca region of the otolith after their upstream migration in spring, suggesting that it is unlikely that any of these ayu had been washed-out from the river by cold and turbulent river water.
- 東京大学の論文
- 2006-06-25
著者
-
TSUKAMOTO Katsumi
Ocean Research Institute, The University of Tokyo
-
KUROKI Mari
Ocean Research Institute, The University of Tokyo
-
Kuroki Mari
Ocean Research Institute The University Of Tokyo
-
MA TAO
Ocean Research Institute, The University of Tokyo
-
Tsukamoto Katsumi
Ocean Research Institute The University Of Tokyo
-
Ma Tao
Ocean Research Institute The University Of Tokyo
-
ISHIDA Rikizo
Fisheries Environment Institute
関連論文
- A new species of freshwater eel Anguilla luzonensis (Teleostei : Anguillidae) from Luzon Island of the Philippines
- Genetic identification of two types of Ariosoma leptocephali
- Genetic diversity of Sicyopterus japonicus as revealed by mitochondrial DNA sequencing
- Age and growth of Anguilla interioris leptocephali collected in Indonesian waters
- Evidence for migration of metamorphosing larvae of Anguilla japonica in the Kuroshio
- Evidence of a local spawning site of marine eels along northeastern Japan, based on the distribution of small leptocephali
- Correspondence between otolith microstructual changes and early life history events in Anguilla marmorata leptocephali and glass eels
- Genetic evidence for multiple geographic populations of the giant mottled eel Anguilla marmorata in the Pacific and Indian oceans
- Complete mitochondrial DNA sequence of the Japanese anchovy Engraulis japonicus
- Molecular approach to species identification of eggs with respect to determination of the spawning site of the Japanese eel Anguilla japonica
- Complete mitochondrial DNA sequence of the Japanese eel Anguilla japonica
- Are morphological characters distinctive enough to discriminate between two species of freshwater eels, Anguilla celebesensis and A. interioris?
- First record of Anguilla japonica Glass Eel Collected in the Kuroshio Current
- Shorter telomere length with age in the loggerhead turtle : a new hope for live sea turtle age estimation
- Onset and development of aggressive behavior in the early life stage of Japanese flounder
- The Effect of Vitamin C Intake on Schooling Behavior of Amphidromous Fish, Ayu Plecoglossus altivelis
- Effects of Water Temperature and Light Intensity on Aggressive Behavior in the Juvenile Yellowtails
- Age Composition in the Schools of Juvenile Yellowtail Seriola quinqueradiata Associated with Drifting Seaweeds in the East China Sea
- Genetic identification of Conger myriaster leptocephali in East China Sea
- A Quick Method for Species Identification of Japanese Eel (Anguilla japonica) Using Real-Time PCR : An Onboard Application for Use During Sampling Surveys
- Molecular phylogeny of the rotifers with two Indonesian Brachionus lineages
- Complete mitochondrial DNA sequence of the Japanese sardine Sardinops melanostictus
- Diel vertical distribution of Anguilla japonica leptocephali
- Discovery of mature freshwater eels in the open ocean
- Migratory history and habitat use of Japanese eel Anguilla japonica in the Sanriku Coast of Japan
- Migratory history and habitat use by New Zealand freshwater eels Anguilla dieffenbachii and A. australis, as revealed by otolith microchemistry
- Environmental history of Japanese eel, Anguilla japonica collected in Miyako Bay, northeastern Japan
- Occurrence of sea eels of Anguilla japonica along the Sanriku Coast of Japan
- The Role of Optical and Chemical Stimuli in the Feeding Behavior Striped Jack Pseudocaranx dentex
- Changes in expression patterns of stress protein genes during population growth of the rotifer Brachionus plicatilis
- Effect of periodical starvation on the survival of offspring in the rotifer Brachionus plicatilis
- Otolith microstructural analysis of reared larvae of the Japanese eel Anguilla japonica
- Determination of the Requirement of Larval Striped Jack for Eicosapentaenoic Acid and Docosahexaenoic Acid Using Enriched Artemia Nauplii
- Extrabranchial chloride cells in early life stages of the Japanese eel, Anguilla japonica
- Application of otolith Sr:Ca ratios to estimate the migratory history of masu salmon, Oncorhynchus masou
- Synchronized spawning of Anguilla japonica inferred from daily otolith increments in leptocephali
- Studies on eels and leptocephali in Southeast Asia : A new research frontier
- Cloning of estrogen receptor-β cDNA of common Japanese conger Conger myriaster and expression of the gene during oocyte development
- Migratory history of wild and released ayu (Plecoglossus altivelis) in the Kurobe River, Japan
- Rod cells proliferate in the eel retinal throughout life
- First record of a leptocephalus larva ingested by a chaetognath
- Inshore migration of a tropical eel, Anguilla marmorata, from Taiwanese and Japanese coasts
- Laboratory Observation on the Nocturnal Activity of Hatchery-reared Juvenile Japanese Flounder Paralichthys olivaceus
- Alkaline earth metal and Mn distribution in otoliths of Anguilla spp. glass eels and elvers
- Immunocytochemical Detection of Prolactin and Growth Hormone Cells in the Pituitary during Early Development of the Japanese Eel, Anguilla japonica(Endocrinology)
- Why Fishes Migrate : Behavioral Drive and Evolutional Process(Symposium on Perception System and Migration Mechanism of Marine Animals,Symposium,PROCEEDING OF THE 75^ ANNUAL MEETING OF THE ZOOLOGICAL SOCIETY OF JAPAN)