Results 61 to 70 of about 1,289 (172)

Sexual differences in the dentition of the dog salmon, Oncorhynchus keta.

Japanese Journal of Oral Biology, 1986
サケ科魚類の口腔および咽頭には多数の歯が植立し, その分布状況は骨の形態や配置と共に属や種の重要な分類形質として認められている。一方, サケ科魚類数種においては成熟期に達すると口部の骨格系および歯系に著るしい性差が生ずると報告されている。しかし, その詳細については不明なことが多い。そこでサケ科サケ属サケ, Oncorhynchus keta, の産卵期成魚の口部骨格系および歯系に関してその大きさや歯胚率等について測定し雌雄間で比較した。サケ雄成魚の口部を構成する骨は同年齢・同体長の雌成魚に比べて大きく, それら骨上に植立する歯の長さも大きい。この傾向は口部両顎を構成する骨や歯においてより顕著であった。さらに, 雄成魚の顎骨上の歯の数は雌成魚より少ないが, 機能歯の割合は高く, 脱落歯の数も多い ...
openaire   +2 more sources

On the Distribution of Vitamine A in the various Organs of Freezing Salmon (Oncorhynchus keta)

NIPPON SUISAN GAKKAISHI, 1944
魚類の肝臟以外の部分、特に諸肝臟器に於けるビタミンAの分布に就いてはEDISBURY等(1),(2)、SHORLAND(3),吉田(4)、嵯峨・進藤(5)、LOVERN等(6),(7)、坂本(8)、PUGSLEY(9),東(10)等の諸研究がある.それ等に依ると、或る種の魚類に於いては、腸及び幽門垂に相當量のビタミンAが存在し、油に対するビタミンA濃度は屡々肝油のそれを凌駕して居る. 著者等は冷凍サケの諸臟器、即ち胃・腸・幽門垂・心臟・脾臟・腎臟・生殖巣及び筋肉に於けるビタミンAの分布竝びにそれ等の油に於けるビタミンA濃度に関し研究を行つたので、其の結果を茲に報告する.
YAMADA, K., SUZUKI, M.
openaire   +2 more sources

Integrating Sr isotopes, microchemistry, and genetics to reconstruct Salmonidae species and life history

Archaeometry, Volume 68, Issue S2, Page S104-S129, May 2026.
Abstract Recent approaches to fisheries research emphasize the importance of the coproduction of knowledge in building resilient and culturally mindful fisheries management frameworks. Despite widespread recognition of the need for Indigenous knowledge and historical reference points as baseline data, archaeological data are rarely included in ...
Ross Salerno, Remi Murdoch, Joanna Elmore, Taylor Wilcox, Jens Hegg, Catherine S. Austin, Michael LeMoine, Jade Luckhurst, Alexandra K. Fraik, Molly Carney   +9 more
wiley   +1 more source

Features of functioning for plankton communities and feeding for pacific salmon in the deep-water areas of Bering and Okhotsk Seas (comparative analysis)

Известия ТИНРО
Species composition, functional structure and production of plankton communities is considered on the long-term data collected in 1986–2022 together with diet and ration for two species of pacific salmon (Oncorhynchus gorbuscha and Oncorhynchus keta ...
Е. Р. Dulepova, V. V. Napazakov
doaj   +1 more source

eDNA Metabarcoding Identifies Fish Conservation Priorities in Deep‐Water Fjords of British Columbia, Canada

Conservation Letters, Volume 19, Issue 3, May/June 2026.
ABSTRACT Fjords are deep‐water estuaries that support a wide range of marine habitats for pelagic fish. Yet, knowledge gaps in fish distribution and habitat use limit the implementation of efficient marine conservation strategies within fjords. Using five British Columbia fjords as a case study, we demonstrated that eDNA metabarcoding combined with ...
Loïc Jacquemot, Andreas Novotny, Clare I. M. Adams, Rute B. G. Clemente‐Carvalho, Drew Jordison, Colleen T. E. Kellogg, Matthew A. Lemay, Brian P. V. Hunt   +7 more
wiley   +1 more source

A Review of a Decade of Anadromous Salmonid Hatchery (And Stocking) Research: Insights for Policy, Management and a Changing Climate

Fish and Fisheries, Volume 27, Issue 3, Page 431-450, May 2026.
ABSTRACT Hatcheries and stocking programmes have long been a cornerstone of fisheries management, seen as tools for fisheries enhancement and/or conservation of threatened populations. Their use draws controversy, however, from a growing body of research over the last 50 years suggesting that stocking can have negative consequences for wild stocks, and
Hannah L. Harrison, Øystein Aas, Valerie Berseth, Tom Chance, Katherine L. Dalby, Shelley Denny, Michael T. Fabiano, Norm Johnson, Tor Kitching, Lian E. Kwong, Polina Orlov, Adrian P. Spidle, Alan Walker, Kyle Wellband, Lorna Wilson, Kurt Samways   +15 more
wiley   +1 more source

Opening a can of worms: Archived canned fish fillets reveal 40 years of change in parasite burden for four Alaskan salmon species

Ecology and Evolution
How has parasitism changed for Alaskan salmon over the past several decades? Parasitological assessments of salmon are inconsistent across time, and though parasite data are sometimes noted when processing fillets for the market, those data are not ...
Natalie Mastick, Rachel Welicky, Aspen Katla, Bruce Odegaard, Virginia Ng, Chelsea L. Wood   +5 more
doaj   +1 more source

A century of vitamin E research: The innovative journey from basic biology to synthetic bio‐manufacturing

Journal of Integrative Plant Biology, Volume 68, Issue 4, Page 985-1012, April 2026.
For a century, Vitamin E has been studied for its health benefits. This review traces its journey from basic biological discovery, and the recent identification of its link to chlorophyll degradation, to the modern era of sustainable microbial manufacturing, highlighting the innovative technologies that define its future production.
Ruiqi Zhang, Yuqing Ren, Yuehe Zhao, Hongyan Zheng, Yanzhong Luo, Yuan Liu, Lei Wang, Lan Zhang   +7 more
wiley   +1 more source

Fish Diversity of East Sea Streams in Han River Region [PDF]

Geo Data
Fish surveys were conducted near artificial structures installed in nine streams flowing from the Han River region to the east coast of Korea. As a result of the survey, a total of 33,488 individuals belonging to 11 orders, 16 families, and 48 species ...
Jeong Ho Hwang, Jong-Hak Yun
doaj   +1 more source

Polydeoxyribonucleotide in Female Pattern Hair Loss: Current Evidence and Knowledge Gaps

Journal of Cosmetic Dermatology, Volume 25, Issue 7, July 2026.
Nika Bakshi, Andrea Dai, Elham T. Tabatabaei, Steven Daveluy   +3 more
wiley   +1 more source