Navigation Links
Hormone in crab eyes makes it possible for females to mate and care for their young
Date:2/3/2014

BALTIMORE, MD (February 3, 2014) Those two crooked beady eyes peeking out of a the shell do more than just help blue crabs spot food in the murky waters of the Chesapeake Bay. They also produce important hormones responsible for the growth and development of a crab from an adolescent into a full-fledged adult. Scientists at the Institute of Marine and Environmental Technology in Maryland recently discovered a new hormone in those eyestalks responsible for forming body parts that make it possible for female crabs to mate and raise young.

"This is the first definitive evidence for the presence of a female-specific hormone in crabs that regulates the development of structures essential for mating and caring for their eggs," said author J. Sook Chung, an associate professor with the University of Maryland Center for Environmental Science. "This hormone is required for maternal care."

Scientists found that this crustacean female sex hormone (CSFH), present in the eyestalk of female blue crabs, or Calinectes sapidus, is integral to the maturation of the crab and development of reproductive structures needed for brooding and mating.

"For the first time in crustaceans, a substance that is critically involved in the control of expression of relevant adult anatomic features in females has been identified," said Russell Hill, Director of the Institute of Marine and Environmental Technology. "This is very significant basic research on a molecular level that also may have practical application in the future, as with most of the important research at IMET".

Female crabs mate only once in their lives, at the very moment that they molt for the final time and reach maturity. The female sex hormones trigger the development of a pair of special receptacles, called spemathecae, that store microscopic packets of sperm, or spermatophores, from the male crab. After mating, the sperm lives in these sacs for up to two years and will be used by the female crab several times to produce more fertilized eggs.

The hormone also triggers the development of hair-like external structures that hold fertilized eggs outside the female's body. The female crab extrudes more than two million eggs into a sponge-like mass that remains attached to her abdomen until the larvae emerge.


'/>"/>
Contact: Amy Pelsinsky
apelsinsky@umces.edu
410-330-1389
University of Maryland Center for Environmental Science
Source:Eurekalert  

Related biology news :

1. Biomarker for stress hormones in polar bears, wildlife affected by global climate change
2. Maternal stress hormones and maternal smoking increase daughters risk of nicotine dependence
3. A*STAR scientists discover novel hormone essential for heart development
4. Hormone therapy could enhance the therapeutic effect of head and facial bone grafts
5. Hormones impact stress, memories, and understanding social cues
6. Gut hormone test predicts individual efficacy of gastric bypass
7. Study reveals potential role of love hormone oxytocin in brain function
8. Arg-Phe-amide-related peptides influence gonadotropin-releasing hormone neurons
9. Prohormonesdirect.com Offers in Depth OxyELITE Pro Reviews
10. Prohormonesdirect.com Discusses the Man of Steel Workout Plan
11. Calcium and vitamin D help hormones help bones
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Hormone in crab eyes makes it possible for females to mate and care for their young
(Date:2/8/2017)... AWRE ), a leading supplier of biometrics software ... year ended December 31, 2016. Revenue for ... $6.9 million in the same quarter last year. Operating income ... to $2.6 million in the fourth quarter of 2015. Net ... or $0.02 per diluted share, which compares to $1.8 million, ...
(Date:2/8/2017)... 7, 2017 The biometrics market has ... confluence of organizations, desires to better authenticate or ... (password and challenge questions), biometrics is quickly working ... The market is driven by use cases, though ... and enterprise uses cases, with consumer-facing use cases ...
(Date:2/7/2017)...   MedNet Solutions , an innovative SaaS-based eClinical ... research, is pleased to announce that the latest release ... flexible and award winning eClinical solution, is now available ... is a proven Software-as-a-Service (SaaS) clinical research technology platform ... also delivers an entire suite of eClinical tools to ...
Breaking Biology News(10 mins):
(Date:3/22/2017)... York , March 22, 2017 ... largely fragmented, states a research report by Transparency Market ... Pfizer Inc., Amgen Inc., and AbbVie Inc., accounted for ... 2015. The prominent players in this market are focusing ... their product portfolio, which is likely to lead to ...
(Date:3/22/2017)...   Boston Biomedical , an industry leader in ... cancer stemness pathways, today announced its Board of Directors ... Executive Officer, effective April 24, 2017. ... M.D., FACP, who has led Boston Biomedical since he ... Boston Biomedical has grown from a "garage startup" without ...
(Date:3/22/2017)... ... March 21, 2017 , ... Okyanos Cell Therapy has ... part of their live events series, “Stem Cell Therapy: The Next Phase in the ... the 2013 Stem Cell Research and Therapy Act, Okyanos maintains a mission ...
(Date:3/22/2017)... ... March 21, 2017 , ... Aqua Design Innovations ... goal and raising over $30,000 in the first 40 minutes of crowdfunding. EcoQube ... herbs fast, easy, and affordably, anywhere. , “Simply add fertilized water and in ...
Breaking Biology Technology: