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:4/11/2017)... , April 11, 2017 No two ... researchers at the New York University Tandon School ... Engineering have found that partial similarities between prints ... used in mobile phones and other electronic devices ... The vulnerability lies in the fact that ...
(Date:4/5/2017)... , April 5, 2017  The Allen Institute for ... Cell Explorer: a one-of-a-kind portal and dynamic digital window ... imaging data, the first application of deep learning to ... stem cell lines and a growing suite of powerful ... for these and future publicly available resources created and ...
(Date:4/4/2017)... 4, 2017   EyeLock LLC , a leader ... United States Patent and Trademark Office (USPTO) has issued ... linking of an iris image with a face image ... the company,s 45 th issued patent. ... timely given the multi-modal biometric capabilities that have recently ...
Breaking Biology News(10 mins):
(Date:6/22/2017)... ... June 21, 2017 , ... Building on the success of the inaugural ... on the very latest developments in radical life extension. RAADfest combines cutting edge science ... the empowerment of personal development, making it the largest most comprehensive and inclusive super ...
(Date:6/22/2017)... CA (PRWEB) , ... June 22, 2017 , ... ... global health leaders in designating infertility as a disease, bringing new hope for ... week at their 2017 annual meeting to back the World Health Organization’s designation ...
(Date:6/22/2017)... ... June 22, 2017 , ... Tunnell Consulting’s ... and life sciences industries, continue to be in demand for their insights and ... be speaking on “The State of Information Governance in the Biopharmaceutical Industry” at ...
(Date:6/22/2017)... ... June 22, 2017 , ... ... the release of Limfinity® version 6.5, a content-packed update to the Limfinity® framework. ... gain a larger and more diverse base of customers among labs and other ...
Breaking Biology Technology: