Fisheries Science

http://link.springer.com/journal/12562

List of Papers (Total 61)

Modeling the coastal ecosystem complex: present situation and challenges

To enhance numerical modeling of the coastal ecosystem complex (CEC), we reviewed the CEC and related concepts along with the current coastal ecosystem model framework in this study. We identified two model implementation paths from the initial objectives to numerical models: specific model building, and the use of existing model frameworks. As the CEC is still at the conceptual...

Effects of a long-term rearing system for deep-sea vesicomyid clams on host survival and endosymbiont retention

Deep-sea vesicomyid clams, including the genus Phreagena, harbor obligate sulfur-oxidizing symbiotic bacteria in gill epithelial cells. Difficulty in maintaining Phreagena clams in rearing tanks has been a major obstacle to achieving a better understanding of their unique biology. To improve the method of rearing Phreagena clams, here we reared them in an artificial...

Development of gene-associated single nucleotide polymorphisms for Japanese anchovy Engraulis japonicus through cross-species amplification

Cross-species amplification is a fast and cost-effective approach for the discovery of genetic markers in non-model species that have a phylogenetically close species with developed markers. The present study employed this method to discover new single nucleotide polymorphism (SNP) markers in the Japanese anchovy Engraulis japonicus. We selected 482 mitochondrial and nuclear SNPs...

A transdisciplinary research of coastal fisheries co-management: the case of the hairtail Trichiurus japonicus trolling line fishery around the Bungo Channel, Japan

Under the coastal fisheries co-management regime in Japan, local fishers play important roles in deciding on and implementing local management measures. Therefore, using the case study of a hairtail trolling line fishery, we conducted a transdisciplinary research with fishers, processors, government officers, etc. Taking social and biological factors into account, we defined...

Stock structure and resource management of hairtail Trichiurus japonicus based on seasonal broods around the Bungo Channel, Japan

Declines in landings of the hairtail Trichiurus japonicas indicate the need for more effective management of this species. Hairtail spawning peaks occur twice yearly in the Bungo Channel, in spring and autumn. Relationships between hairtail stock and brood seasonality were examined to determine if an association between either and a decline in landings existed. Stock assessments...

Conservation of small hairtail Trichiurus japonicas by using hooks with large artificial bait: effect on the trolling line fishery

Overfishing has reduced the stock of hairtail Trichiurus japonicus around the Bungo Channel, Japan. To determine whether using larger bait in the trolling line fishery could avoid catching small/undersize hairtail, we developed and trialled a new large artificial bait (a soft plastic bait, 6 inches long). A traditional lure with natural bait (type-1), a new lure of the new...

Reputational damage and the Fukushima disaster: an analysis of seafood in Japan

As the levels of radioactivity in seafood have fallen back into the safe range, Fukushima fisheries are considering reopening. However, even if seafood from the Fukushima area were sufficiently safe to distribute to seafood markets, its value may be undermined because of the damage done to its reputation by the Fukushima disaster. We quantified consumers’ preferences for seafood...

Estimation of the abundance of the sei whale Balaenoptera borealis in the central and eastern North Pacific in summer using sighting data from 2010 to 2012

The abundance of the sei whale Balaenoptera borealis in the central and eastern North Pacific (north of 40°N, south of the Alaskan coast including both the US and Canadian Exclusive Economic Zones between 170°E and 135°W), from July to August, was estimated by the line transect method using sighting data obtained during the 2010–2012 International Whaling Commission-Pacific Ocean...

Age estimation of Antarctic minke whales Balaenoptera bonaerensis based on aspartic acid racemization technique

Counting of the growth layers in the earplugs is the most accepted technique for determining chronological age of Antarctic minke whales; however, unreadable growth layers form in some individuals, especially in young animals. In this study, aspartic acid racemization (AAR) technique was developed for estimating ages in this species with the aim of complementing the age estimated...

Distribution of small plastic fragments floating in the western Pacific Ocean from 2000 to 2001

Sampling was conducted at 31 sites in the western Pacific Ocean from 2000 to 2001 with the aim of collecting plastic fragments with a neuston net (mesh size 1.00 mm × 1.64 mm). Small plastic fragments including microplastics (small fragments in the size range of 1.1–41.8 mm) were collected at multiple survey sites. Waters with high densities of small fragments were observed...

Recreational fisheries in the UK: natural capital, ecosystem services, threats, and management

The island nature of the UK has led to its long history of commercial marine fisheries, with associated recreational fisheries along and near to its extensive shoreline. In addition, an abundance of fresh waters provides extensive recreational fisheries, but few commercial fisheries, on rivers and lakes where catch-and-release is prevalent. Here, an overview is presented of these...

Vitellogenesis and choriogenesis in fishes

In studies of sex discrimination in fish in the early 1900s, a specific antigen in the blood of gravid females was identified using immunological methods. At present, this specific antigen is known as vitellogenin, the major precursor of egg yolk protein that is synthesized in the female liver and is secreted into the blood to be incorporated into the egg. Recently, protein and...

Narrowed temperature adaptability in non-natal osmotic environments of two euryhaline wanderers, dace and black porgy: implications for seasonal habitat changes

Many euryhaline wanderer species exhibit seasonal habitat changes, and temperature is suggested to play a key role in this phenomenon. To examine this possibility, we tested the hypothesis that adaptable temperature ranges of euryhaline wanderers are narrower in a non-natal osmotic environment than in their natal osmotic environment using dace Tribolodon hakonensis, a freshwater...

Comparison of olfactometrically detected compounds and aroma properties of four different edible parts of Chinese mitten crab

Chinese mitten crab Eriocheir sinensis from the Songjiang district in Shanghai is popular among Chinese consumers due to its unique pleasant aroma. In this study, volatile compounds in four edible parts of steamed male E. sinensis were extracted by the monolithic material sorptive extraction method and analyzed by gas chromatography-mass spectrometry/olfactometry, the E-Nose...

Characterization of important odorants in four steamed Coilia ectenes from China by gas chromatography–mass spectrometry–olfactometry

Odorants were extracted from four Coilia ectenes (Yangtze River-Coilia, East China sea-Coilia, Chao Lake-Coilia and Yellow River-Coilia) by MonoTrap™ and analyzed by the headspace-monolithic material sorptive extraction technique combined with gas chromatography–mass spectrometry–olfactometry (GC–MS–O). A total of 63 volatile compounds were identified. The results of GC–MS–O...