MBI Species Classification Request

General

Name:

Matt Pedersen ( mpedersen )

Status:

Evaluating

Date:

06/29/2013

Classification Type:

New

Challenge

Species:

Petrolisthes galathinus

Suggested Class:

Common Name(s):

Porcelain Crab

Species Synonyms:

Fish/Invert/Culture:

Spawn Mode:

Demersal

Fish Base Link:

http://www.sealifebase.org/summary/Petrolisthes-galathinus.html

Breeding Success:

True

Success References:

I cannot view the full article, but this suggests that a "Crab stage" was reached in the lab, 2 years after I was born no less. Ancient success we've probably never known about. Makes me want to retry this. Anyone able to get ahold of the article and send it to me?!

The effect of salinity and temperature on the larval development of the porcellanid crab petrolisthes galathinus reared in the laboratory
Huni A.A.D., 1979: The effect of salinity and temperature on the larval development of the porcellanid crab petrolisthes galathinus reared in the laboratory. Libyan Journal Of Science: 58

Larvae of the porcellanid crab P. galathinus (Bosc, 1802) were reared in 12 different environments comprising 3 levels of salinity (25, 30 and 35.permill.) and 4 levels of temperatures (20, 25, 30 and 35.degree. C). Salinity and temperature as well as combinations of these 2 physical factors affect both the rate of development and the survival of individual larval stages. The rate of development was slightly slower in a salinity of 25.permill. than in salinities of 30 and 35.permill., and very markedly retarded with decreasing temperature from 30-20.degree. C. At 35.degree. C total mortality was observed in the 1st zoeal stage in all salinities. At the experimental temperatures of 20 and 25.degree. C, the larvae developed only to the megalopa. The 1st crab stage was attained at 30.degree. C in all salinities with best survival in the salinity of 30.permill. The optimum culture conditions for the larvae of P. galathinus may be those which utilize a combination of salinity in the range of 25-30.permill. and water temperature of approximately 30.degree. C. Under these conditions P. glathinus can complete its larval development in less than 3 wk.

Journal:

If Challenging Existing Classification
Reasons Species Should be Reclassified:

If Requesting New Classification
Research or Links to information on Species:	http://www.reefhobbyistmagazine.com/archives/vol_3/issue9/pages/issue_9-8.htm - Porcelain crab article showing many species. http://www.sealifebase.org/summary/Petrolisthes-galathinus.html

Other Details
Other Information:	Back when I worked with Porcelain crabs from Florida, the best species ID we could get was Porcellana sayana, which is unfortunately not correct. My reports, filed under that name, actually cover Petrolisthes galathinus, this species I'm now submitting.

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mpedersen
(Matt Pedersen)
6/29/13 11:40 PM ANOTHER success reference - http://triscience.com/General/larval-development-of-the-porcellanid-crab-petrolisthes-galathinus-reared-in-the-laboratory/doculite_view Larvae from western Atlantic specimens of P. galathinus Bosc, 1802, were reared from hatching to the 1st crab stage. Two zoeal stages and the megalopa stage are completely described and illustrated. The zoeae and megalopae of P. galathinus are morphologically similar to those of both Atlantic and Pacific forms of P. armatus Gibbes, but there are several diagnostic differences which enable the larvae of P. galathinus to be easily recognized in the plankton. Zoeae of both forms of P. armatus are smaller, have shorter rostral and posterior carapace spines, fewer setae or slightly different setal arrangements on maxillules, maxillae and maxillepeds, than in zoeae of P. galathinus. The magalopa of P. galathinus is larger than that of P. armatus, and has a significant increase in the setation of its appendages. The pereiopod forms, armature and granulation resemble those of a miniature adult.

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