alexa Immunocytochemical study of the somatolactin cells in the pituitary of Pacific salmon, Oncorhynchus nerka, and O keta at some stages of the reproductive cycle.
Agri and Aquaculture

Agri and Aquaculture

Fisheries and Aquaculture Journal

Author(s): Olivereau M, RandWeaver M

Abstract Share this page

Abstract Cells of the intermediate lobe of salmonids, homologous to the PAS-positive cells of other teleost species, cannot be differentiated by normal staining techniques, but can be immunostained with an antiserum against cod somatolactin (SL). Immunocytochemical techniques were applied to pituitary sections of two Pacific salmon, Oncorhynchus nerka and O. keta. Samples of immature or early maturing fish were collected in the Pacific Ocean and from mature spawning fish from hatcheries near Seattle and Willard (Washington). SL cells were rather small and moderately immunoreactive in immature fish. They were slightly enlarged in the early stages of gonadal development and more often contacted the basal lamina through processes with terminal swellings, suggesting granule release into perivascular spaces. In spawning fish, cells were enlarged and frequently more granulated, showing a wide contact with the basal lamina and a proximodistal transport of granules. In addition, large and more or less degranulated cells were noted, also indicating an active release of SL granules. Spawning females tended to have more SL cells than equivalent males. The gradual stimulation of SL synthesis and release during sexual maturation suggests that SL may be involved in the control of some steps of reproduction as previously shown by the increase in SL plasma levels in maturing coho salmon.
This article was published in Gen Comp Endocrinol and referenced in Fisheries and Aquaculture Journal

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

agrifoodaquavet@omicsonline.com

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

clinical_biochem@omicsonline.com

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

business@omicsonline.com

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

chemicaleng_chemistry@omicsonline.com

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

environmentalsci@omicsonline.com

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

engineering@omicsonline.com

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

generalsci_healthcare@omicsonline.com

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

genetics_molbio@omicsonline.com

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

immuno_microbio@omicsonline.com

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

omics@omicsonline.com

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

materialsci@omicsonline.com

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

mathematics_physics@omicsonline.com

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

medical@omicsonline.com

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

neuro_psychology@omicsonline.com

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

pharma@omicsonline.com

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

social_politicalsci@omicsonline.com

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version