The Hoosier Cavefish, a new and endangered species from the caves of southern Indiana

May 29, 2014
This is the Hoosier cavefish, a new eyeless cavefish is described from Indiana. Credit: Matthew Niemiller

A new eyeless cavefish is described from Indiana and named after the Indiana Hoosiers. It is the first new cavefish species described from the U.S. in 40 years. Notably, it has an anus right behind its head, and the females brood their young in their gill chamber. The new species was described in the open access journal ZooKeys.

The new , Amblyopsis hoosieri, is the closest relative of a species (A. spelaea) from the longest cave system in the world, Mammoth Cave in Kentucky. These two species are separated by the Ohio River, which also separates the states of Indiana and Kentucky.

The species from south of the Ohio River, A. spelaea, has a knockout mutation in the genetic sequence of rhodopsin, a gene important in vision. The new species, on the other hand, lacks this mutation and maintains a functional rhodopsin gene, despite lacking eyes and vision. The new species shows distinct morphological differences compared to its southern congener. It has a plumper, Bibendum-like body and shorter fins. It also has smaller mechanosensory neuromasts on papillae, which allow them to sense movement in the dark waters of the caves they are found in.

The authors decided to name the new species, A. hoosieri, the Hoosier Cavefish, not only after the Indiana Hoosiers team, but mainly to honor the proximity of the to Indiana University and several famed ichthyologists who worked there. "The senior author of the manuscript is a fervent fan of Indiana Hoosier basketball, but the first author is an alumni of the University of Michigan and is not. Also notable is that the middle author of the publication is currently an undergraduate at Louisiana State University." explain the authors.

Indiana University used to be the Mecca of North American Ichthyology but unfortunately it no longer has an ichthyology department. David Starr Jordan (1851–1931), The Father of North American Ichthyology, spent much of his distinguished career at Indiana University, later going on to be the first Chancellor of Stanford University. It is said that all living North American ichthyologists can trace their lineage of graduate training back to Jordan (e.g., Chakrabarty - Fink - Weitzman - Myers - Jordan).

Carl Eigenmann (1863–1927) was also one of the greatest ichthyologists and studied many blind vertebrates, while at Indiana University. It was very likely that he was actually the first person to have collected what we now recognize as Amblyopsis hoosieri. Notably, Eigenmann's wife Rosa (1858–1947) is considered by many to be the first female ichthyologist. She and her husband described more than 100 species together.

Explore further: Lurking in the darkness of Chinese caves five new species of armored spiders come to light

More information: Chakrabarty P, Prejean JA, Niemiller ML (2014) The Hoosier cavefish, a new and endangered species (Amblyopsidae, Amblyopsis) from the caves of southern Indiana. ZooKeys 412: 41–57. DOI: 10.3897/zookeys.412.7245

add to favorites email to friend print save as pdf

Related Stories

New horned lizard species found in southern Mexico

May 15, 2014

An article published in the current issue of the journal Herpetologica describes a new horned lizard species that lives in Mexico. Body size, tail length, and scale texture and layout distinguish this new species, which ...

Ancient ancestor of tulip tree line identified

Sep 12, 2013

The modern-day tulip tree, state tree of Indiana as well as Kentucky and Tennessee, can trace its lineage back to the time of the dinosaurs, according to newly published research by an Indiana University ...

Recommended for you

A vegetarian carnivorous plant

Dec 19, 2014

Carnivorous plants catch and digest tiny animals in order and derive benefits for their nutrition. Interestingly the trend towards vegetarianism seems to overcome carnivorous plants as well. The aquatic carnivorous bladderwort, ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.