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Article
Onset of estivation in western sand lance Ammodytes japonicus is not solely triggered by elevating water temperature
Western sand lance Ammodytes japonicus exhibits dormancy in summer known as estivation, a distinctive ecology among teleosts. Estivation starts in early summer and continues until winter even water temperature lo...
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Article
A genome-wide screening of the 70 kDa heat shock protein (HSP70) genes in the rotifer Brachionus plicatilis sensu stricto with a characterization of two heat-inducible HSP70 genes
The 70 kDa heat shock proteins (HSP70s) and the constitutive members of the HSP70 family (heat shock cognates; HSC70s) play essential roles in various biological processes. The number of hsp70/hsc70 in the databa...
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Circulation
The freshwater eel genus Anguilla consists of 19 species/subspecies that inhabit brackish and freshwater habitats worldwide. The distribution of the genus is mainly in the tropics, however its exact distribution ...
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Article
Reproductive behavior and alternative reproductive strategy in the deep-sea snailfish, Careproctus pellucidus
The reproductive biology of deep-sea fishes is largely unknown because of the difficulty of behavioral observations in this environment. In this study, the reproductive behavior of the deep-sea snailfish, Carepro...
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Article
Open AccessThe complex evolution of the metazoan HSP70 gene family
The metazoan 70-kDa heat shock protein (HSP70) family contains several members localized in different subcellular compartments. The cytosolic members have been classified into inducible HSP70s and constitutive...
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Article
Native and introduced Far Eastern daces, genus Tribolodon, in the Tama River system, Japan, inferred from mitochondrial DNA analysis
To investigate the species composition and genetic characteristics of Far Eastern daces, genus Tribolodon, in the Tama River, Japan, partial DNA sequences of the mitochondrial DNA control region were compared amo...
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Article
HaCeD-Seq: a Novel Method for Reliable and Easy Estimation About the Fish Population Using Haplotype Count from eDNA
It is common to count the numbers of specified fish in the field after speciation of captured fish according to their morphology and to subject these counts to appropriate statistical analyses. In recent years...
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Article
Discovering the dominance of the non-native European eel in the upper reaches of the Tone River system, Japan
To investigate the presence of non-native anguillid eels in Japanese waters, 141 eels were collected from seven sampling sites throughout the Tone River system. Genetic species identification showed an extraor...
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Chapter
Aging and Lifespan in the Rotifer
Rotifers have been used as a model in aging studies due to their several advantages such as short lifespan, ease of culture, and asexual reproduction that enables clonal culture. Recent molecular phylogenetic ...
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Article
Species composition of anguillid glass eels recruited at southern Mindanao Island, the Philippines
Commercial exploitation of tropical Anguilla species has been expanding rapidly in Southeast Asia, even though their ecological status is unknown. In the present study, we investigated the species composition of ...
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Article
Molecular genetic identification of Japanese sand lances using mitochondrial DNA cytochrome c oxidase subunit 1 restriction fragment length polymorphisms
We developed a novel molecular genetic method using restriction fragment length polymorphisms (RFLPs) to identify the taxonomically debatable Japanese sand lances of the genus Ammodytes. Partial nucleotide sequen...
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Article
Skin mucus C-type lectin genes from all 19 Anguilla species/subspecies
Fish skin and its corresponding mucus are important defenses against infections from pathogenic organisms, and several types of defensive molecules, particularly lectins, are often found in mucus. Freshwater e...
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Article
Open AccessGenetic identification method for two subspecies of the Indonesian short-finned eel, Anguilla bicolor, using an allelic discrimination technique
There is an increasing pressure on tropical species of the freshwater eel genus Anguilla for use in aquaculture, so species identification methods are needed to monitor these activities and to facilitate conserva...
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Article
Molecular cytogenetic study in Octopus (Amphioctopus) areolatus from Japan
Octopus (Amphioctopus) areolatus is an important marine cephalopod in Japan. We examined its diploid chromosome number, karyotype, and genome size (C value), and performed fluorescence in situ hy...
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Article
Open AccessOccurrence and biological characteristics of glass eels of the Japanese eel Anguilla japonica at the Cagayan River of Luzon Island, Philippines in 2009
The Japanese eel Anguilla japonica spawns in the North Equatorial Current in the Philippine Sea and their larvae are transported to their freshwater growth habitats in East Asia. Here we report the occurrence and...
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Article
Open AccessAriosoma-type Leptocephali (Congridae: Bathymyrinae) in the Mentawai Islands region off western Sumatra, Indonesia
Ariosoma-type leptocephali of the congrid subfamily Bathymyrinae are typically present in tropical and subtropical regions where they reach large sizes and are often abundant compared to other taxa. Different mo...
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Article
Late arrival of Anguilla japonica glass eels at the Sagami River estuary in two recent consecutive year classes: ecology and socio-economic impacts
To determine the actual status of the recruiting glass eel stock of Anguilla japonica, we conducted a continuous monthly monitoring program for 2 years between November 2009 and October 2011 at the Sagami River e...
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Article
Genetic identification and morphology of naturally spawned eggs of the Japanese eel Anguilla japonica collected in the western North Pacific
Eggs of the Japanese eel Anguilla japonica collected in the western North Pacific were identified by onboard species-specific polymerase chain reaction (PCR) and DNA nucleotide sequencing after the cruise. Fish e...
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Article
Evaluation of the larval distribution and migration of the Japanese eel in the western North Pacific
The distribution of all larval stages of the Japanese eel, Anguilla japonica, were examined using historical catch records and original data in the western North Pacific (WNP) to evaluate existing information abo...
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Article
Offshore spawning of Conger myriaster in the western North Pacific: evidence for convergent migration strategies of anguilliform eels in the Atlantic and Pacific
The spawning area of the common Japanese conger, Conger myriaster, had remained unknown because spawning adults or its newly hatched larvae were never collected. Using genetic identification, we determined that C...
