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1

A simple trap for the capture new-emergent salmonid fry in streams

100%
Radtke G.
Archives of Polish Fisheries
|
2008
|
tom 16
|
nr 1
2
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Content available

Trehalose synthesis in Cystidicola farionis (Nematoda: Cystidicolidae): a preliminary study

86%
Dmitryjuk M., Dziekonska-Rynko J.
Annals of Parasitology
|
2016
|
tom 62
|
nr Suppl.
3

Histological structure of the skin of Arctic charr, Salvelinus alpinus [L.] from Spitsbergen

72%
Witkowski A., Kaleta K., Kuryszko J., Kusznierz J.
Acta Ichthyologica et Piscatoria
|
2004
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tom 34
|
nr 2
Background. Like in most salmonids, females of Artic charr dig nests, while spawning, to deposit their eggs, while the role of males is most often limited to the territorial defence. The aim of this study was to examine the histological structure of skin in both sexes, in the body parts which are particularly exposed to mechanical damage during spawning. Materials and Methods. Based on material representing three forms (anadromous, land-locked (lake), and dwarf/riverine), collected in the pre-spawning and spawning periods, histological structure of the skin was analysed for three body areas: dorsum (back), side, and venter (belly). Results. In females of all the forms the skin in analysed body areas was thicker and contained more mucous cells, compared to males. In the ventral region it was the thickest, on the dorsum-the thinnest. A comparison of the skin structure in the three forms showed that, in the land-locked form (both sexes), the skin in all the body parts was thicker and richer in mucous cells, compared to the anadromous form. Conclusion. The skin of Arctic charr females plays a protective role, preventing mechanical damage during nest digging and egg burying, because of its substantial thickness and the abundance of mucous cells especially in the ventral region.
4

Spawning site selection and redd gravel characteristics of sea trout Salmo trutta in the lowland streams of Lithuania

58%
Nika N., Virbickas T., Kontautas A.
Oceanological and Hydrobiological Studies
|
2011
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tom 40
|
nr 1
5

Induced gynogenesis as potential tool for detection of receive deleterious mutations carriers in salmonids fishery

58%
Zyczynski A.
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
|
2017
|
tom 56[2]
Induced gynogenesis as potential tool for detection of receive deleterious mutations carriers salmonids fishery . 8 rainbow trout females were tripped and the eggs were subjected to induced gynogenesis procedure. Approximately half of 3 female’s progeny showed type of malformations occasionally observed in rainbow trout stock kept in Rutki Station. The case study describes the potential usefulness of gynogenesis as breeding test to reveal carriers of harmful recessive alleles.
6

Serological variation among Polish isolates of Yersinia ruckeri

58%
Pekala A., Kozinska A., Antychowicz J.
Bulletin of the Veterinary Institute in Puławy
|
2010
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tom 54
|
nr 3
One hundred and twenty-six isolates of Yersinia ruckeri originating from different species of fish were collected: 122 from rainbow trout (Oncorhynchus mykiss; Walbaum), three from pike (Esox lucius L.), and one from carp (Cyprinus carpio L.). The O- serotyping of the isolates were carried out for the first time in Poland by microplate agglutination assays according to the Davies procedure. Three O-serotypes were determined: O1, O5, and O7. Serotypes O2 and O6 have not been recognised. Almost all isolates were represented by serotype O1, which originated only from rainbow trout showing classical clinical signs of enteric redmouth disease. The strains representing serotype O5 were only collected from pike and serotype O7 from carp and rainbow trout showing no clinical signs of the diseases.
7

Possibilities of using the length differentiation of hatchery sea trout, Salmo trutta m. trutta L., parr to predict numbers of one-year smolts

58%
Debowski P., Dobosz S., Grudniewska J., Kuzminski H.
Archives of Polish Fisheries
|
2010
|
tom 18
|
nr 1
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