Navigation Links
Male seahorses are nature's Mr. Mom, Texas A&M researchers say
Date:5/1/2008

COLLEGE STATION Male seahorses are natures real-life Mr. Moms they take fathering to a whole new level: Pregnancy.

Although it is common for male fish to play the dominant parenting role, male pregnancy is a complex process unique to the fish family Syngnathidae, which includes pipefish, seahorses and sea dragons. Texas A&M University evolutionary biology researcher Adam Jones and colleagues in his lab are studying the effects of male pregnancy on sex roles and sexual selection of mates and are trying to understand how the novel body structures necessary for male pregnancy evolved. By doing this, the researchers hope to gain a better understanding of the evolutionary mechanisms responsible for changes in the structure of organisms over time.

We are using seahorses and their relatives to address one of the most exciting areas of research in modern evolutionary biology: the origin of complex traits, Jones said. The brood pouch on male seahorses and pipefish where females deposit eggs during mating is a novel trait that has had a huge impact on the biology of the species because the ability for males to become pregnant has completely changed the mating dynamics.

When seahorses mate, the female inserts her ovipositor into the males brood pouch (an external structure that grows on the body of the male) and deposits her unfertilized eggs into the pouch. The male then releases sperm into the pouch to fertilize the eggs. It wouldnt be that interesting if the brood pouch were just a flap of skin where the females put regular fish eggs and they developed in the bag instead of on the sea floor, Jones said. But the male pregnancy in some species of seahorses and pipefish is physiologically much more complex than that.

After the female deposits her unfertilized eggs into the male, the outer shell of the eggs breaks down, and tissue from the male grows up around the eggs in the pouch. After fertilizing the eggs, the male closely contro
'/>"/>

Contact: Keith Randall
keith-randall@tamu.edu
979-845-4644
Texas A&M University
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Entrust Digital Signatures Help Secure More Than 18 Million U.S. ePassports
2. UTMB inventions win University of Texas System commercialization awards
3. Underwater microscope helps prevent shellfish poisoning along Gulf Coast of Texas
4. Researchers confirm dead zone off Texas coast since 1985
5. Texas A&M scientists say early Americans arrived earlier
6. Texas A&M testing oral contraceptives for animals
7. Texas Hospital nations first to use large-scale cocoon strategy against whooping cough
8. Rices West honored as one of Texas best researchers
9. UT Southwestern scientist honored among best in Texas research
10. Gulf of Mexico dead zone to be studied by University of Texas at Austin marine scientists
11. Ceres and Texas A&M to develop and market high-biomass sorghum for biofuels
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/2/2015)... Sweden , April 2, 2015 ... for Q1 2015 attributed to somewhat higher than 125 ... in the year-end report 2014 that revenues for Q1 ... that the company reported for Q4 2014. The operating ... to be negative. The complete interim report will as ...
(Date:3/31/2015)... March 31, 2015  Elephant Talk Communications Corp. (NYSE ... provider of Software Defined Network Architecture (ET Software DNA® ... revenue of approximately $20.4 million for the year ended ... million for the year ended December 31, 2013. ... Company had completed its multi-year transition away from its ...
(Date:3/24/2015)... and Markets ( http://www.researchandmarkets.com/research/hdgz7h/global_iris ) has announced ... 2015-2019" report to their offering. The ... at a CAGR of 23.5 percent over the period ... and the growth prospects of the Global Iris Recognition ... size, the report considers the revenue generated from sales ...
Breaking Biology News(10 mins):Fingerprint Cards Revises Revenues for Q1 2015 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2
... Researchers at the University of Gothenburg, Sweden, have developed ... them to controlled environmental changes. The unique method, where ... in a microscopic channel system, allows the researchers to ... a constantly changing environment. Studies on how cells ...
... group of vertebrates sometimes assist a more dominant pair ... this has been shown to occur among subordinate female ... PLoS ONE , Dik Heg and colleagues at the ... suggest that rather than engaging in an act of ...
... available in German . , For modern ... is important to generate materials with characteristics that closely emulate ... of traits that are very hard to recreate in synthetic ... of Australian and Korean researchers led by Geoffrey M. Spinks ...
Cached Biology News:Using high-precision laser tweezers to juggle cells 2The importance of being helpful -- Cooperative cichlids boost their own reproductive success 2Progress toward artificial tissue? 2
(Date:4/16/2015)... 2015 Fairleigh Dickinson University ( ... to become the Executive Director of the Rothman ... the kick-off of the Initiative for Patient Centered ... Gulfo, under the Rothman Institute of Innovation and ... in collaboration with FDU’s School of Pharmacy’s Center ...
(Date:4/16/2015)... Washington (PRWEB) April 16, 2015 ... Applied Cancer Science and Resolution Bioscience, Inc. today ... to co-develop a novel, blood-based, clinic ready, Next ... cancer (NSCLC). The collaboration is the first to ... RET, and ROS1 fusions in blinded plasma samples ...
(Date:4/16/2015)... 2015 CCI Global Channel Management, the ... planning management software for major tech and telecom vendors, ... survey of channel vendor programs in software, hardware, and ... How the top IT vendors in each segment ... coming year. , Assessment of the state ...
(Date:4/15/2015)... TAMARAC, Fla. , April 15, 2015  Richard Rubenstein, ... Connelly Media Research Group as one of South ... "best of the best" physicians who exhibit proven leadership in ... and physician assistants at four locations in South ... Delray Beach and Boynton Beach ...
Breaking Biology Technology:Dr. Joseph V. Gulfo Named Executive Director of Fairleigh Dickinson University’s Rothman Institute to Spearhead New Initiative for Patient-Centered Innovation (iPCI) 2Dr. Joseph V. Gulfo Named Executive Director of Fairleigh Dickinson University’s Rothman Institute to Spearhead New Initiative for Patient-Centered Innovation (iPCI) 3Resolution Bioscience announces successful collaboration on a novel, non-invasive, targeted NGS test for lung cancer 2Resolution Bioscience announces successful collaboration on a novel, non-invasive, targeted NGS test for lung cancer 3CCI’s Channel Program Study Reveals 40% of IT Vendor Channel Staff Lack Adequate Access to Program and Partner Data 2CCI’s Channel Program Study Reveals 40% of IT Vendor Channel Staff Lack Adequate Access to Program and Partner Data 3Richard Rubenstein, MD Selected As One Of South Florida's Top Doctors! 2
... 2011 Avantra® Biosciences, a leading innovator in ... Avantra,s new service allows researchers to cost effectively ... assays developed on Avantra,s proven QPDx™ BioChip platform. ... multiplex protein assays using catalog or custom reagents. ...
... EntreMed, Inc. (Nasdaq: ENMD ), a ... cancer today announced the presentation of clinical data for ... cancer patients.   The data were presented by the ... medical director of gynecologic oncology at Dana-Farber Cancer Institute ...
... biopharmaceutical product launches have produced both noteworthy failures and ... a continually evolving launch landscape, organizations are rethinking the ... launch environment. In a new wide-ranging ... failure points facing new product launches, Best Practices, LLC ...
Cached Biology Technology:EntreMed's ENMD-2076 Demonstrates Clinical Activity in Recurrent, Platinum-Resistant Ovarian Cancer Patients 2EntreMed's ENMD-2076 Demonstrates Clinical Activity in Recurrent, Platinum-Resistant Ovarian Cancer Patients 3EntreMed's ENMD-2076 Demonstrates Clinical Activity in Recurrent, Platinum-Resistant Ovarian Cancer Patients 4Creating a Road Map for Successful Cardiovascular New Product Launch 2
WIF-1 (N-20)...
Mouse monoclonal [1.T.4] to WAVE 1 ( Abpromise for all tested applications). Antigen: His6 fusion protein corresponding to full-length rat WAVE1. Entrez Gene ID: 8936...
IgG2b, k APC clone A95-1, Isotype Rat IgG2b, kappa, 0.1 mg ....
...
Biology Products: