Journal Title
Title of Journal: Fish Physiol Biochem
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Abbravation: Fish Physiology and Biochemistry
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Publisher
Kluwer Academic Publishers
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Authors: A Shimizu T Sakai K Nashida H Honda
Publish Date: 2005/06/02
Volume: 29, Issue: 4, Pages: 275-287
Abstract
Pituitaries of various teleosts belonging to 25 orders were immunostained with antisera raised against synthetic fragment peptides corresponding to conservative regions of gonadotropinβ subunits mummichog FSHβ 5060 and mummichog LHβ 91106 Both immunoreactive FSH cells and immunoreactive LH cells were successfully identified in the fishes of almost every order of the superorder Acanthopterygii and several species of the superorders Paracanthopterygii and Polymixiomorpha such as mullet alfonsino flyingfish mackerel flounder cod beardfish etc These antisera are therefore considered as universal antisera for immunocytochemical application to acanthopterygian fishes Extensive diversity in the abundance of the FSH cells and the LH cells among species was noted even in fishes with similar gonadal stages indicating the possibility that the respective roles of FSH and LH may vary considerably among species in advanced teleostsEvident but generally weak immunoreactivities to antimummichog LHβ 91106 were observed in the fishes of the superorder Cyclosquamata and slight or weak immunoreactivities to the antiserum were observed in the fishes of several more primitive taxa superorder Stenopterygii Protacanthopterygii Ostariophysi subdivision Clupeomorpha and subdivision Elopomorpha No immunoreactivity to antimummichog FSHβ 5060 was observed in these fishes These results are consistent with the phylogenetic status of the fishes and the degree of conservativeness in the amino acid sequences of the antigen regions
Keywords:
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