Linked Life Data

17172051

Source:http://linkedlifedata.com/resource/pubmed/id/17172051

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2006-12-18
pubmed:abstractText
The histological and ultra-structure of the pituitary in diploid red crucian carp (Carassius auratus red var.), triploid crucian carp and allotetraploid hybrids within and after the breeding season were comparatively studied. The result showed that there were six endocrine cell types in the pituitary of these three kinds of fishes, and there was an obvious difference in cell size among different ploidy level fishes. As for the same type of pituitary cells, the cell size was increased gradually with the increasing ploidy level. In the breeding season, the allotetraploid hybrids had higher proportion of gonadotropin cells (GTH) than triploids, and the triploids had higher proportion of GTH than diploids. The results were related to the earlier sexual maturity of allotetraploid hybrids and sterility of triploid crucian carp. On the other hand, among the three kinds of fishes, the proportion of somatotropin (STH) cells in triploids crucian carp was the highest, whereas that in allotetraploid hybrids was the lowest. The results might be connected with the faster growth rate of triploids and slower growth rate of allotetraploid hybrids. In addition, in GTH cells of meso-adenohypophysis after the breeding season, there were many endocrine particles in triploids, while those endocrine particles were released from the cells in allotetraploids and diploids. This result showed that the sterility of triploid crucian carp might be related to the hormone which was not released from the GTH cells. In a word, the present study indicated that the differences in the structure of pituitary among different ploidy level fishes contributed to their difference in the growth rate and gonadal development.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1006-9305
pubmed:author
pubmed:issnType
Print
pubmed:volume
49
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
446-53
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Comparative studies on histological and ultra-structure of the pituitary of different ploidy level fishes.
pubmed:affiliation
College of Life Sciences, Hunan Normal University, Changsha 410081, China.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't