Results 61 to 70 of about 448 (153)

Ecological Studies of the Pond Smelt, Hypomesus olidns (PALLAS)-II

open access: yesNIPPON SUISAN GAKKAISHI, 1953
The scale of pond smelt, Hypomesus olidus (PALLAS), shows no definite annual-ring in such a manner as the scale of salmon or herring. Two different zones, one of which grows in summer and the other in winter, are recognized on the scale of the fish in Lake Kasumigaura by F. MATSUZAKI (1916), while, according to H.
openaire   +3 more sources

Length–weight relationships of 12 fish species (Actinopterygii) from nearshore and coastal Alaskan waters of the eastern Bering, Chukchi, and Beaufort seas [PDF]

open access: yesActa Ichthyologica et Piscatoria
Changing ocean conditions in higher latitude ecosystems and the potential impact on marine fish underscores the need for baseline information on their biology and growth.
Edward Hu   +2 more
doaj   +3 more sources

Use of affinity analysis to guide habitat restoration and enhancement for the imperiled delta smelt

open access: yesEndangered Species Research, 2020
Habitat restoration efforts in the upper San Francisco Estuary, including the Sacramento-San Joaquin Delta, California, move forward, despite a paucity of information on the environmental requirements of many targeted species.
Hamilton, SA, Murphy, DD
doaj   +1 more source

Surf smelt accelerate usage of endogenous energy reserves under climate change.

open access: yesPLoS ONE, 2022
Surf smelt (Hypomesus pretiosus) are ecologically critical forage fish in the North Pacific ecosystem. As obligate beach spawners, surf smelt embryos are exposed to wide-ranging marine and terrestrial environmental conditions. Despite this fact, very few
Megan Russell   +2 more
doaj   +1 more source

Characterization of salmon‐foraging harbor seals (Phoca vitulina) in the Erimo region, Hokkaido, Japan, using finite mixture models

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 2, February 2026.
Finite mixture models revealed that older, larger harbor seals specialize in salmon predation at setnets in Hokkaido, Japan, suggesting targeted management strategies focusing on these specialist individuals could effectively reduce fishery conflicts while protecting the broader seal population.
Takahito Masubuchi, Mari Kobayashi
wiley   +1 more source

The transcriptome-wide effects of exposure to a pyrethroid pesticide on the Critically Endangered delta smelt Hypomesus transpacificus

open access: yesEndangered Species Research, 2015
Research into the effects of contaminants on fishes is often conducted on well-studied model test species, whose responses may be different than those of endangered species.
KM Jeffries   +7 more
doaj   +1 more source

Molecular Identification of the Nematode Eustrongylides ignotus in Mandarin Fish, Siniperca chuatsi

open access: yesAquaculture, Fish and Fisheries, Volume 5, Issue 6, December 2025.
ABSTRACT Mandarin fish (Siniperca chuatsi) is a high‐value economic freshwater fish in China; however, the frequent occurrence of diseases threatens its production. To this end, we explored the impact of a nematode parasite newly found in the abdomen of mandarin fish collected from Pudong, Shanghai, China.
Jin‐hua Gao   +8 more
wiley   +1 more source

Age and repeated collection interval effects on sperm motility in the endangered delta smelt Hypomesus transpacificus

open access: yesEndangered Species Research
Understanding the reproductive dynamics of endangered species is crucial for effective conservation strategies. This study examines the impact of age and repeated collection interval on sperm motility in the Critically Endangered delta smelt Hypomesus ...
MM Rahman, T Hung
doaj   +1 more source

The Content of Ca in the Muscle of a Teleost, Hypomesus olidus, in Relation to its Environment

open access: yesNIPPON SUISAN GAKKAISHI, 1937
Of the two lakes, Hinuma and Kasumigaura, located close to the coast of the Ibaraki Prefecture, the former is much more subject to invasion of sea-water. The chemical analysis has shown (Table 2) that 0·922 mg. of Ca and 57·31 mg. af Cl are present on average in the water of Lake Hinuma, whereas 0·716 mg. of Ca and 2·178 mg. Cl are present in the water
USUI, Yohei   +2 more
openaire   +2 more sources

A Covered Cod-End and Tow-Path Evaluation of Midwater Trawl Gear Efficiency for Catching Delta Smelt (Hypomesus transpacificus)

open access: yesSan Francisco Estuary and Watershed Science, 2017
https://doi.org/10.15447/sfews.2017v15iss4art3For nearly 50 years, the California Department of Fish and Wildlife has used a midwater trawl to intensively monitor fish populations in the San Francisco Estuary during the fall, sampling over 100 locations
Lara Mitchell   +2 more
doaj  

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