Roles of gonad-inhibiting hormone in the protandric simultaneous hermaphrodite peppermint shrimp†

2020 ◽  
Vol 103 (4) ◽  
pp. 817-827
Author(s):  
Wenyuan Shi ◽  
Fang Liu ◽  
An Liu ◽  
Huiyang Huang ◽  
Qi Lin ◽  
...  
Keyword(s):  
Quantitative Polymerase Chain Reaction ◽  
Gonadal Development ◽  
Simultaneous Hermaphrodite ◽  
Secondary Sexual Characteristic ◽  
Significant Difference ◽  
Peppermint Shrimp ◽  
Gonad Inhibiting Hormone ◽  
Sexual Characteristic ◽  
Secondary Sexual

Abstract To date, the molecular mechanisms of the unique gonadal development mode known as protandric simultaneous hermaphroditism (PSH) are unclear in crustaceans. In this study, cDNA of a gonad-inhibiting hormone (Lv-GIH1) was isolated from the PSH peppermint shrimp Lysmata vittata, and its expression was exclusively found in the eyestalk ganglion. Real-time quantitative polymerase chain reaction (qRT-PCR) revealed that the expression of Lv-GIH1 increased during gonadal development of the functional male stages but decreased significantly at subsequent simultaneous hermaphroditism stage. Further in vitro experiment showed that recombinant GIH1 protein (rGIH1) effectively inhibited Vg expression in the cultured hepatopancreas tissues while the short-term injection of GIH1-dsRNA resulted in reduced expression of Lv-GIH1 and upregulated expression of Vg in the hepatopancreas. Moreover, long-term rGIH1 injection led to significantly reduced expression of Lv-Vg, Lv-VgR, and Lv-CFSH1, subdued growth of oocytes, and feathery setae as a secondary sexual characteristic in females. Interestingly, while germ cells in testicular part were suppressed by rGIH1 injection, the expression of Lv-IAGs showed no significant difference; and long-term GIH1-dsRNA injection results were contrary to those of rGIH1 injection. Taken together, the results of this study indicate that Lv-GIH1 is involved in gonadal development and might also participate in controlling secondary sexual characteristic development in L. vittata by inhibiting Lv-CFSH1 expression.

scholarly journals Hens (Gallus gallus domesticus) with larger spurs have higher faecal testosterone levels; evidence of female to male - like phenotype

2018 ◽  
Author(s):  
John P Kent ◽  
Niamh M Hynes ◽  
Thomas J Hayden ◽  
Kenneth J Murphy ◽  
Laurence O'Dywer
Keyword(s):  
Gallus Gallus ◽  
Sex Reversal ◽  
Gallus Domesticus ◽  
Gallus Gallus Domesticus ◽  
Testosterone Levels ◽  
Secondary Sexual Characteristic ◽  
Male Sex ◽  
Testosterone Metabolites ◽  
Sexual Characteristic ◽  
Secondary Sexual

Spurs are a testosterone-dependent secondary sexual characteristic of male chickens (Gallus gallus domesticus) and are used as ‘weapons’ in intra-sexual fighting. While predominantly a male feature, they are also found in a small number of females. Here we show that faecal testosterone metabolites of adult hens (i.e. females) with large spurs are significantly greater than those of females with smaller spurs. The presence of spurs in hens together with elevated testosterone levels are indicative of a masculinisation process that may increase with age. This is of particular interest in the study of female to male sex-reversal in fowl.

Hobnail haemangioma associated with a secondary sexual characteristic

2009 ◽  
Vol 23 (4) ◽  
pp. 465-466 ◽  
Author(s):  
W-K Hong ◽  
H-J Song ◽  
H-S Lee ◽  
J-H Shin ◽  
G-S Choi
Keyword(s):  
Secondary Sexual Characteristic ◽  
Sexual Characteristic ◽  
Secondary Sexual

A Male-case of Non-secondary Sexual Characteristic Septo-optic Dysplasia with Carbamazepine-induced Syndrome of Inappropriate Secretion of Antidiuretic Hormone

2011 ◽  
Vol 28 (3) ◽  
pp. 409-415
Author(s):  
Tsunenori Hirayama ◽  
Yoshiko Takeda ◽  
Harumi Saijo ◽  
Mayumi Iwata-Okada ◽  
Takanori Ezoe ◽  
...  
Keyword(s):  
Antidiuretic Hormone ◽  
Secondary Sexual Characteristic ◽  
Inappropriate Secretion ◽  
Sexual Characteristic ◽  
Secondary Sexual

Is it useful to view the brain as a secondary sexual characteristic?

2014 ◽  
Vol 46 ◽  
pp. 628-638 ◽  
Author(s):  
Gregory F. Ball ◽  
Jacques Balthazart ◽  
Margaret M. McCarthy
Keyword(s):  
Secondary Sexual Characteristic ◽  
The Brain ◽  
Sexual Characteristic ◽  
Secondary Sexual

Secondary Sexual Characteristic

2017 ◽  
Author(s):  
John H. Duffus ◽  
Michael Schwenk ◽  
Douglas M. Templeton
Keyword(s):  
Secondary Sexual Characteristic ◽  
Sexual Characteristic ◽  
Secondary Sexual

scholarly journals ANALISIS MORFOMETRIK DAN POLA PERTUMBUHAN IKAN JUARO (Pangasius polyuranodon) DI PERAIRAN SUNGAI KAMPAR DAN SUNGAI SIAK PROVINSI RIAU

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Lauura Hermala Yunita ◽  
Windarti Windarti ◽  
Muhammad Fauzi
Keyword(s):  
Water Quality ◽  
Morphological Characteristic ◽  
B Value ◽  
Secondary Sexual Characteristic ◽  
Weight Relationship ◽  
Laboratory Results ◽  
Sexual Characteristic ◽  
Secondary Sexual

Pangasius polyuranodon commonly inhabit rivers in Riau such as Kampar and Siak Rivers. Evironmental condition of those rivers, however, are different. The Siak River has bad water quality, while that of the Kampar River is better and thus affects the morphological characteristic of the fish in general. To understand the morphological charateristic of fish from both rivers, a study has been conducted in March – June 2019. Fish was sampling once and they were analyzed in the laboratory. Results shown that general characteristics of the fish from both sampling areas are similar. The length-weight relationship, however, shoun that fish from the Siak River was smaller than that of the Kampar River. There was 170 – 360 mm TL, 41 – 474 gr BW and b value was 3,00 (isometric) for the fish of the Kampar River and there was 160 - 290 mm TL, 23 – 100 gr BW and b value was 1,83 (negative allometric). Secondary sexual characteristic of the fish from the Kampar River occured at around 250 mm TL, while that of the Siak River was 190 mm TL. Based on data obtained it can be concluded fish from the Kampar River growing faster than fish from the Siak River.

scholarly journals Hens (Gallus gallus domesticus) with larger spurs have higher faecal testosterone levels; evidence of female to male - like phenotype

2018 ◽  
Author(s):  
John P Kent ◽  
Niamh M Hynes ◽  
Thomas J Hayden ◽  
Kenneth J Murphy ◽  
Laurence O'Dywer
Keyword(s):  
Gallus Gallus ◽  
Sex Reversal ◽  
Gallus Domesticus ◽  
Gallus Gallus Domesticus ◽  
Testosterone Levels ◽  
Secondary Sexual Characteristic ◽  
Male Sex ◽  
Testosterone Metabolites ◽  
Sexual Characteristic ◽  
Secondary Sexual

Spurs are a testosterone-dependent secondary sexual characteristic of male chickens (Gallus gallus domesticus) and are used as ‘weapons’ in intra-sexual fighting. While predominantly a male feature, they are also found in a small number of females. Here we show that faecal testosterone metabolites of adult hens (i.e. females) with large spurs are significantly greater than those of females with smaller spurs. The presence of spurs in hens together with elevated testosterone levels are indicative of a masculinisation process that may increase with age. This is of particular interest in the study of female to male sex-reversal in fowl.

scholarly journals Secondary Sexual Characteristics in the Galerucinae (Sensu Stricto) (Coleoptera: Chrysomelidae)

ISRN Zoology ◽  
2011 ◽  
Vol 2011 ◽  
pp. 1-60 ◽  
Author(s):  
M. S. Mohamedsaid ◽  
D. G. Furth
Keyword(s):  
Sensu Stricto ◽  
The Body ◽  
Line Drawings ◽  
Secondary Sexual Characteristics ◽  
Secondary Sexual Characteristic ◽  
The Family ◽  
Sexual Characteristics ◽  
Species Specific ◽  
Sexual Characteristic ◽  
Secondary Sexual

A list of 1298 species and 172 genera of Chrysomelidae from the subfamily Galerucinae (sensu stricto) with the males having at least one form of secondary sexual characteristic (SSC) is presented. The number of species amounts to 24% of the total Galerucinae presently known from all over the world—a very significant amount. The SSCs comprise various types of modified structures found on all parts of the body—head, thorax, and abdomen. They are not variable but species specific. Illustrations from selected 87 species that include 84 images and 15 line drawings showing various types of SSC are provided. The amazing array of SSCs from the Galerucinae offers a large and taxonomically diverse set of data that are not comparable with other subfamilies in the Chrysomelidae and may be useful in phylogenetic analysis of the family.

scholarly journals Roles of Crustacean Female Sex Hormone 1a in a Protandric Simultaneous Hermaphrodite Shrimp

2021 ◽  
Vol 8 ◽  
Author(s):  
Fang Liu ◽  
Wenyuan Shi ◽  
Lin Huang ◽  
Guizhong Wang ◽  
Zhihuang Zhu ◽  
...  
Keyword(s):  
Sex Hormone ◽  
Individual Growth ◽  
Sex Characteristics ◽  
Simultaneous Hermaphrodite ◽  
Short Term ◽  
Female Sex ◽  
Secondary Sex Characteristics ◽  
Peppermint Shrimp ◽  
Injection Experiment

Crustacean female sex hormone (CFSH) plays a pivotal role in the development of secondary sex characteristics in dioecious crustaceans. However, until now the knowledge concerning its functions in hermaphroditic species is scanty. Herein, we explored the function of CFSH (Lvit-CFSH1a) in the peppermint shrimp Lysmata vittata, a species characterized by a rare reproductive system of protandric simultaneous hermaphroditism (PSH). Lvit-CFSH1a cDNA was 1,220-bp in length with a 720-bp ORF encoded a polypeptide of 239-aa. RT-PCR showed that Lvit-CFSH1a was exclusively expressed in the eyestalk ganglion. For female physiology, it was found that Lvit-CFSH1a was indispensable for the development of female gonopores, but it might not involve vitellogenesis of the species. For male physiology, Lvit-CFSH1a suppressed Lvit-IAG2 expression in short-term silencing experiment and recombinant protein injection experiment, but did not affect male sexual differentiation in long-term silencing experiment. In addition, silencing the Lvit-CFSH1a gene impeded individual growth in L. vittata.

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