The Sea Slug Forum - Bursatella leachii. May 3. 0, 2. 00. 0From: Richard Willan. Dear Bill,I have unravelled the mystery of the opisthobranchs eating . You are right it is part of a natural process. In late summer every year, larvae of the woolly sea hare Bursatella leachii settle from the plankton onto the filamentous blue- green alga Microcoleus lyngbyaceus (formerly Lyngbya majuscula) throughout harbours and estuaries in northern New Zealand. They grow very rapidly on this diet to about 9. So they soon become highly conspicuous and form aggregations centered around patches of their food and they crawl from patch to patch in groups or lines elephant- file. Stylocheilus longicauda can be present in these feeding/breeding aggregations too, but they are always less abundant than Bursatella leachii. I studied this natural cycle in Auckland Harbour for my Ph. D thesis some years ago (reference below). This autumn the water has been warmer than usual in New Zealand (like Australia) and the aggregations larger, so the mass deaths following spawning have been very noticeable and caught the attention of the media. The matter of these sea hares eating . Formerly Microcoleus lyngbaceus was classified as a member of the Cyanophyta, but that higher classification has now changed (to Cyanobacteria) to reflect the fact that this . Obviously someone in the media picked up the bacteria part of Cyanobacteria, and wrongly concluded the Sea Hares were eating bacteria. Like you, I know of no opisthobranch that eats bacteria proper. Reference: Willan, R. C. Unpublished Ph. D thesis, University of Auckland, 2. Best wishes,Richard Willan. Rubric For Bursatella Leachii Ap. Willan, R., 2. 00. May 3. 0) Re: Bursatella leachii & sewage. Australian Museum, Sydney. As you will see from John Buckeridge's message a couple of days ago, the media appear to have unfortunately misinterpreted the information they were provided with. I note you are using the name Stylocheilus longicauda for the lined Stylocheilus sometimes occurring in northern New Zealand. Could I refer you to the page in the Forum where I discuss why this is a misidentification, and the name we should use is Stylocheilus striata. Best wishes,Bill Rudman. Comment on Re: Bursatella leachii & sewage by Richard Willan . Australian Museum, Sydney. Cavas, November 2. Bursatella washing ashore East Florida. From: Jon Moore, November 1. Bursatella leachii at Sanibel Island, Florida. From: Camilla Cheatham, November 1. Slug or not? From: Gary Jackson, August 1. Sea Slug Mating Season? The ragged sea hare, Bursatella leachii De Blainville, 1817, is a medium to large-sized (usu-ally from 50 to 100 mm, up to 150 mm) benthic opisthobranch mollusc (Voss. Rubric For Bursatella Leachii Ap Essay Answer Download Rubric For Bursatella Leachii Ap Essay Answer in pdf, reading online Rubric For.
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