Examination: Examination of the external genitalia shall include gonads
, if palpable and symmetrical or not.
In the same way functional hermaphroditism was observed in Strongylocentrotus purpuratus with gonads
predominantly female and areas of each gonad
containing some tubules with stages of spermatogenesis and mature sperm as well as mature ova (Gonor, 1973).
This study determined spawn timing of Parastichopus californicus in SEAK over three annual cycles based on GI, and then compared GI with gonad
lipid content and histological observations of egg development to determine whether GI presents an accurate indication of gonad
These results indicated that eyestalk ablation promoted food consumption, feeding intensity, gonad
development, and energy conversion efficiency of P.
Histological analysis was performed on 31 gonads
that represent the different phases of development: 3 gonads
for the immature phase, 12 gonads
for the early developing subphase, 6 gonads
for the developing phase, 4 gonads
for the spawning-capable phase, 2 gonads
for the regressing phase, and 1 gonad
for the regenerating phase.
It is very likely that the determination and consequent differentiation of sturgeon gonads
take place during the first year of life, studies showing gonad
surface differentiation at 4 months for A.
(2013)  reported that the liver appeared to be the main heavy metal storage tissue, while the gonad
had the lowest levels of analysed metals.
GW is gonad
weight and BW is body weight or soft body tissue.
Informative predictive parameters for the development of gonadal type 2 germ cell tumours are the anatomical position of the gonad
, gonadal differentiation, and the presence of a specific part of the Y chromosome (14).
Asymmetric expression of ER in male embryonic gonads
was noticed since ER is expressed only in the left male gonad
but not the right side.
About total lipids, although these can also accumulate in the gonad
and muscle the high levels found in the hepatopancreas of males and females in comparison to the other analyzed tissues, confirm this organ as the main lipid storage place in C.
Thus, the objective of this study was to evaluate the quality and shelf life of the gonad
of whole lion's paw scallops during refrigerated transport and storage, as a possible alternative for exporting the product to international markets, when this organ attached to the muscle and/or other organ, depending on the type of product being handled.