Results 81 to 90 of about 53,919 (205)

Description of two new actinosporean types from a brook of Fuji Mountain, Honshu, and from Chitose River, Hokkaido, Japan [PDF]

open access: yes, 2003
Actinospore infection of oligochaetes living in the mud of 3 freshwater biotopes in Japan was studied. Using the cell-well plate method, a new aurantiactinomyxon type was found in 0.77 % of the examined Tubifex tubifex oligochaete specimens from a brook ...
Ogawa, K.   +4 more
core   +1 more source

Electrophysiological recording of hypothalamic brain regions in vivo using the transpharyngeal surgical approach in the rat

open access: yesJournal of Neuroendocrinology, Volume 38, Issue 4, April 2026.
Abstract Transpharyngeal (ventral) surgery in urethane‐anaesthetised rats allows in vivo electrophysiological recording and/or imaging from superficial hypothalamic brain regions and from the pituitary gland. This surgical approach leaves the whole brain intact, providing a stable platform to study single or multiple identified cells over several hours
Mike Ludwig, Gareth Leng, Colin H. Brown
wiley   +1 more source

Freshwater fish and crayfish communities of the tributaries of the Margaret River [PDF]

open access: yes, 2009
Tributaries and headwaters of major rivers are known to be important spawning and nursery habitats of freshwater endemic fishes in south-western Australia (see for example the Collie River in Pen & Potter 1990, and the Blackwood River in Beatty et al ...
Allen, M., Beatty, S., Morgan, D.
core   +1 more source

Comparative analysis of morphology, growth performance and gonadal development between the hybrid crab (Scylla serrata ♀ × S. paramamosian ♂) and S. serrata

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 2, April 2026.
Abstract Interspecific hybridization, through integrating genetic resources across distinct species, serves as a pivotal strategy for improving yield, stress resistance, and quality in aquacultural species. To evaluate the performance of hybrid crab (Scylla serrata ♀ × S.
Huanyu Zhang   +7 more
wiley   +1 more source

Ecological studies and histopathological alterations caused by Argulus japonicus among goldfish in Mosul, Iraq [PDF]

open access: yesThe Iranian Journal of Veterinary Science and Technology
Argulus japonicus (fish lice) is one of the the is one of the most economically significant ectoparasites infesting cultured and wild fish, predisposing hosts to secondary infections.
Shahbaa AL-Taee   +4 more
doaj   +1 more source

Goldfishing by gauge theory

open access: yes, 2006
A new solvable many-body problem of goldfish type is identified and used to revisit the connection among two different approaches to solvable dynamical systems. An isochronous variant of this model is identified and investigated.
E. Langmann   +3 more
core   +1 more source

Optimal dietary protein level for juvenile Hefang crucian carp (Carassius auratus): Balancing growth performance and hepatic health

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 2, April 2026.
Abstract A 54‐day feeding trial was conducted to investigate the effects of dietary protein levels on growth performance, digestive capacity, plasma biochemical indexes, and gene expression in Hefang crucian carp (Carassius auratus). Six experimental diets were prepared with protein levels of 21.7%, 24.0%, 29.4%, 34.0%, 38.0%, and 43.2%, respectively ...
Jie Zhang   +11 more
wiley   +1 more source

FAKTOR-FAKTOR YANG MEMPENGARUHI PINJAMAN MODAL PETANI IKAN MAS KE PT.BPR DIAN SINARTA DAN PERBANDINGAN PENDAPATAN ANTARA PEMINJAM DAN NON PEMINJAM MODAL

open access: yesJurnal Agrisep, 2006
A condition which is often find where farmers incapable to providing the capital because weakening of farmer fund which also result in weaken   source of farmer's own capital. The effect of this condition, farmers seldom have to use capital from outside
Romyanti Romyanti   +2 more
doaj   +1 more source

The valvula cerebelli of the spiny eel, Macrognathus aculeatus, receives primary lateral-line afferents from the rostrum of the upper jaw [PDF]

open access: yes, 1991
In the spiny eel, Macrognathus aculeatus, anterodorsal and (to a lesser degree) anteroventral lateralline nerves project massively to the granular layer of the valvula cerebelli, throughout its rostrocaudal extent.
Hofmann, M. H.   +2 more
core   +1 more source

Preservation of stable isotope niche dynamics in squamate museum specimens

open access: yesJournal of Animal Ecology, Volume 95, Issue 3, Page 509-520, March 2026.
This paper presents the first research on the effects of fluid specimen preservation in a community context, demonstrating the recovery of metrics of niche dynamics across a diverse array of squamate taxa. Abstract Natural history museums are invaluable resources for large‐scale ecological and evolutionary studies, but certain ecological traits can be ...
Maggie R. Grundler, Erica Bree Rosenblum
wiley   +1 more source

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