Larval description of the sympatric species, Craterocephalus stercusmuscarum stercusmuscarum(Pisces: Atherinidae) and Mogurnda adspersa(Pisces: Eleotridae) from tropical streams of north‐east Queensland, Australia

$48.00 plus tax (Refund Policy)

Download / Buy Article:

Abstract:

Descriptions and illustrations of stages in the larval development of two common sympatric freshwater fishes in streams of tropical north‐east Queensland, the fly‐specked hardyhead Craterocephalus stercusmuscarum stercusmuscarum and the purple‐spotted gudgeon Mogurnda adspersa are presented. Larval development is described in terms of ontogenetic changes in gross morphology, notochord morphology, pigmentation, finfold morphology and fin structure. Developmental changes during the larval period of C. s. stercusmuscarum are similar to other atheriniformes, especially the genus Melanotaenia. The highly variable development and advanced state at hatching of M. adspersa in tropical streams contrasts with larval development of disjunct populations of the same species in southern Australia and also with other closely related species of the Eleotridae described elsewhere. Larvae of M. adspersa can be distinguished from C. s. stercusmuscarum on the basis of six key characters: pigmentation, presence of a pre‐anal ventral finfold, general body form and shape, number of post‐anal myomeres, notochord morphology at hatching and timing of swimbladder inflation. Characters that allow for the accurate discrimination between both of these species and other sympatric atheriniformes are identified.

Keywords: Atherinidae; Eleotridae; larval development; ontogeny; tropical streams

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1111/j.0022-1112.2005.00632.x

Affiliations: Centre for Riverine Landscapes, Griffith University, Nathan, Queensland 4111, Australia

Publication date: March 1, 2005

Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more