A5084772812- Reproductive biology and impacts on aquatic species
- Marine and fisheries research
- Fish Ecology and Management Studies
- Aquaculture Nutrition and Growth
- Fish Biology and Ecology Studies
- Ichthyology and Marine Biology
- Identification and Quantification in Food
- Isotope Analysis in Ecology
- Cephalopods and Marine Biology
- Bird parasitology and diseases
- Coral and Marine Ecosystems Studies
- Environmental DNA in Biodiversity Studies
- Marine animal studies overview
- Avian ecology and behavior
- Environmental Toxicology and Ecotoxicology
- Animal Ecology and Behavior Studies
- Marine Biology and Ecology Research
- Psychotherapy Techniques and Applications
- Marine Invertebrate Physiology and Ecology
- Aquatic life and conservation
- Personality Disorders and Psychopathology
- Marine Ecology and Invasive Species
- Marine Bivalve and Aquaculture Studies
- Marine and coastal ecosystems
- Conservation, Biodiversity, and Resource Management
The University of Tokyo
2013-2025
Government of Northwest Territories
2024
Nihon University
2014-2022
University of Minnesota Medical Center
2015-2017
Pacific University Oregon
2014
University of Minnesota
2014
State University of New York
2011
The Ohio State University
2011
University of South Florida
2006-2010
Institute of Behavioral Sciences
2009
The natural reproductive ecology of freshwater eels remained a mystery even after some their offshore spawning areas were discovered approximately 100 years ago. In this study, we investigate the for first time using collections eggs, larvae and spawning-condition adults two species in shared area Pacific. Ovaries female Japanese eel giant mottled polycyclic, suggesting that can spawn more than once during season. collection eggs near West Mariana Ridge where newly hatched also caught shows...
Abstract Friedland, K. D., Miller, M. J., and Knights, B. 2007. Oceanic changes in the Sargasso Sea declines recruitment of European eel. – ICES Journal Marine Science, 64: 519–530. Anguillid eel North Atlantic has declined recent decades, raising concerns that climatic may be influencing oceanic reproduction larval survival. There is a significant negative correlation between Oscillation long-term variations catches glass stages Anguilla anguilla recorded by fishery independent Den Oever...
Of more than 800 species of eels the order Anguilliformes, only freshwater (genus Anguilla with 16 plus three subspecies) spend most their lives in during catadromous life cycle. Nevertheless, because spawning areas are located offshore open ocean, they migrate back to specific breeding places often thousands kilometres away. The evolutionary origin such enigmatic behaviour, however, remains elusive uncertain phylogenetic position within principally marine anguilliforms. Here, we show strong...
Sixty-eight individuals were randomised to either six sessions of imaginal desensitisation plus motivational interviewing (IDMI) or Gamblers Anonymous. Individuals assigned IDMI had significantly greater reductions in Yale-Brown Obsessive Compulsive Scale Modified for Pathological Gambling total scores, gambling urges and behaviour. People who failed respond Anonymous reported reduction pathological symptoms following later assignment IDMI. Abstinence was achieved by 63.6% during the acute...
To assist in detection of offshore spawning activities the Japanese eel Anguilla japonica and facilitate interpretation results environmental DNA (eDNA) analysis their area, we examined eDNA concentration released by each life history stage artificially reared eels laboratory using quantitative real-time PCR (qPCR). We also compared concentrations between before after induced activities. was not detected from three 30 L seawater tanks containing single fertilized egg, but found other...
Abstract Anguillid eels are found globally in fresh, transitional and saline waters have played an important role human life for centuries. The population status of several species is now significant concern. threats to populations include direct exploitation at different stages, blockages migratory routes by dams other structures, changes river basin management that impact habitat carrying capacity suitability, pollution, climate change, diseases parasites. While much has been done...
Recent findings and hypotheses about the migration, spawning ecology, phylogenetic relationships, possible mechanisms of speciation anguillid eels are overviewed. The offshore distribution otolith microstructure small leptocephali suggest that Japanese eel Anguilla japonica may spawn at seamounts west Mariana Islands in western North Pacific during new moon each month from April to November. Some temperate have been found remain coastal areas after recruitment without a freshwater growth...
Abstract Diazinon and chlorpyrifos are two organophosphorous pesticides widely found in municipal, agricultural, urban storm water discharges. Because they often concurrently, their relationship with respect to joint toxicity is of interest, particularly regard interpreting the results identification evaluations (TIEs) that point metabolically activated pesticide(s) as causes toxicity. Joint was evaluated using static tests incorporated 48- 96-h exposure periods laboratory water, natural...
What eel larvae feed on in the surface layer of ocean has remained mysterious. Gut contents and bulk nitrogen stable isotope studies suggested that these unusual larvae, called leptocephali, at a low level oceanic food web, whereas other types evidence have small zooplankton are eaten. In this study, we determined isotopic composition amino acids both natural laboratory-reared Japanese to estimate trophic position (TP) leptocephali. We observed mean TP 2.4 for which is consistent with...
Extensive collections were made of the larvae temperate Japanese eel Anguilla japonica and tropical giant mottled marmorata in an overlapping area North Equatorial Current region western Pacific Ocean. Collections 189 A. > 2500 during nine surveys from 1991 to 2007 showed that these two anguillid eels have similar spawning areas just west southern West Mariana Ridge. In July August 2006 2007, morphologically genetically identified preleptocephali mainly collected between 14·5–15° N...
Abstract The three northern hemisphere anguillid eel species experienced recruitment declines at similar times beginning in the 1970s and 1980s, but exact causes of have remained unclear. Attention focused on two categories possible that included (i) anthropogenic impacts growth habitats, such as dam construction, degradation pollution introduction parasites, overfishing (ii) changes ocean-atmospheric conditions affecting their marine life-history stages. cumulative effects reaching peaks...
The Japanese eel, Anguilla japonica, spawns within the North Equatorial Current that bifurcates into both northward and southward flows in its westward region, so spawning location larval transport dynamics seem important for understanding fluctuations recruitment to East Asia. Intensive research efforts determined eels spawn along western side of West Mariana Ridge during new moon periods, where all oceanic life history stages have been collected, including eggs adults. However, how decide...
It has been known for about a century that European eels have unique life history includes offshore spawning in the Sargasso Sea 5000–7000 km away from their juvenile and adult habitats Europe northern Africa. Recently hatched eel larvae were historically collected during Danish, German American surveys specific areas southern Sea. During 31 day period of March April 2014, Danish research ships sampled along 15 alternating transects stations across The collection recently (≤12 mm) 70° W...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 266:213-225 (2004) - doi:10.3354/meps266213 Evidence of different habitat use by New Zealand freshwater eels Anguilla australis and A. dieffenbachii, as revealed otolith microchemistry Takaomi Arai1,*, Aya Kotake2, P. Mark Lokman3, Michael J. Miller2, Katsumi Tsukamoto2 1International Coastal Research Center,...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 318:187-201 (2006) - doi:10.3354/meps318187 Zooplankton response storm runoff in a tropical estuary: bottom-up and top-down controls R. S. Hoover1, 3,*,**, D. M. Miller1, Landry2, E. H. DeCarlo1, F. T. Mackenzie1 1Department of Oceanography, University Hawaii at Manoa, Honolulu, 96822, USA 2Integrative...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 437:229-240 (2011) - DOI: https://doi.org/10.3354/meps09266 First observations of oceanic migration Japanese eel, from pop-up archival transmitting tags Ryotaro Manabe1,*, Jun Aoyama1, Kunihiro Watanabe2, Miho Kawai3, Michael J. Miller1, Katsumi Tsukamoto1 1Atmosphere and Ocean Research Institute, University...
Recruitment declines of anguillid eels are difficult to understand because both anthropogenic impacts on juveniles and adults oceanic changes affecting larval survival or dispersal may be contributing. Anguillid larvae passively disperse widely from offshore spawning areas but late-stage glass apparently must swim directionally reach recruitment habitats. Their long durations vary among tropical (∼3–4 months) temperate species (5 months >1 year). The bodies leptocephali filled with...