Navigation Links
Researchers identify new catfish family

Editor : A 3D scan of one of the new catfish is available at digimorph

A team of researchers from Mexico and the United States has identified a new family of catfish in the state of Chiapas, Mexico. The paper detailing the discovery has been published in Zootaxa, an online scientific journal.

They've named the new family Lacantuniidae and named the species Lacantunia enigmatica. It becomes the 37th family of catfishes, a diverse group of fish found around the world.

Discovery of new families of living vertebrates is rare; in ichthyology there have been just two new families discovered in the past 60 years: the coelacanth in 1938 and the megamouth shark in 1983.

The researchers are Dr. Rocio Rodiles-Hernandez of the Colegio de la Frontera Sur, Dr. Dean Hendrickson and Dr. Julian Humphries of The University of Texas at Austin and Dr. John Lundberg of the Academy of Natural Sciences of Philadelphia.

Thorough anatomical studies of the fish document its status as a new family and show that the fish is the only member of an ancient group that may have arisen while dinosaurs roamed the Earth.

The fish's skeleton was scanned by high-resolution computer tomographic equipment at The University of Texas at Austin.

"To most people it's just a catfish, and externally it looks a lot like an ictalurid, the family to which all North American freshwater catfishes belong." Hendrickson said. "But once we got into the skeleton, we started seeing all these weird things."

A barbel (the part that resembles a cat's whisker) is articulated differently from that of an ictalurid. There also are differences in the bone structure of the skull and in the shape of the air bladder.

"The ictalurids all have these big jaw muscles that come up over the top and anchor on top of the head" Hendrickson said. "This has a very narrow cranium and the muscles anc hor to the sides of the bone instead of coming up on top. That and a number of other characters clearly indicate it has nothing to do with ictalurids."

The animal and plant life of Mesoamerica is exceptionally diverse with distinct origins from North America, South America and adjacent oceans.

They said Lacantunia enigmatica appears not to fit any of those patterns and thus the name of the species reflects the mystery surrounding its origins and relationships.

The generic name of the fish reflects its distribution in the Río Lacantún drainage, flowing through the Montes Azules and Selva Lacandona Biosphere Reserves in México into that country's largest river, the Río Usumacinta.

The fish is relatively rare in that the researchers have had a hard time finding many specimens. They collected just one specimen in a recent five-day expedition.

The researchers are concerned about the fish's habitat, which is threatened by exploitation of the forests and possible damming of the rivers it lives in.


'"/>

Source:University of Texas at Austin


Related biology news :

1. Researchers discover way to make cells in the eye sensitive to light
2. Researchers find how protein allows insects to detect and respond to pheromones
3. Researchers Uncover Key Step In Manufacture of Memory Protein
4. Researchers reveal the infectious impact of salmon farms on wild salmon
5. Researchers identify target for cancer drugs
6. Researchers discover molecule that causes secondary stroke
7. Researchers find missing genes of ancient organism
8. Researchers trace evolution to relatively simple genetic changes
9. Researchers add new tool to tumor-treatment arsenal
10. UF Researchers Map Bacterial Proteins That Cause Tooth Loss
11. VCU Researchers Identify Networks Of Genes Responding To Alcohol In The Brain
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... , April 4, 2017 KEY FINDINGS ... anticipated to expand at a CAGR of 25.76% during ... diseases is the primary factor for the growth of ... report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The global ... product, technology, application, and geography. The stem cell market ...
(Date:3/30/2017)... HONG KONG , March 30, 2017 ... developed a system for three-dimensional (3D) fingerprint identification by adopting ground ... technology into a new realm of speed and accuracy for use ... applications at an affordable cost. ... ...
(Date:3/27/2017)... , March 27, 2017  Catholic Health Services ... Management Systems Society (HIMSS) Analytics for achieving Stage ... Model sm . In addition, CHS previously earned ... hospitals using an electronic medical record (EMR). ... high level of EMR usage in an outpatient ...
Breaking Biology News(10 mins):
(Date:5/16/2017)... ... May 16, 2017 , ... Seattle-based ... metagenomic deconvolution service. ProxiMeta enables researchers to obtain complete, distinct genomes from ... at lower cost. , “We’re very excited about the commercial launch of ...
(Date:5/16/2017)... 2017 Telehealth has long been a ... that has been kept completely separate from discussions ... to   Logicalis Healthcare Solutions , the healthcare-focused ... and managed services provider ( www.us.logicalis.com ), there ... interrelationship between telehealth, imaging, and EHR optimization that ...
(Date:5/15/2017)... PA (PRWEB) , ... May 15, 2017 , ... ... insights in a presentation of “The Key Role of Specifications in Process Validation,” at ... of Philadelphia . The event will bring together leaders from the pharmaceutical and biotech ...
(Date:5/15/2017)... ... May 15, 2017 , ... Continuing to ... skincare brand has today launched its first-ever cross-medium campaign, #StandFirm, with high-visibility social ... digital and social media channels, emphasizing Algenist’s stance on individuality and disruption: ...
Breaking Biology Technology: