Re: Atagema intecta from Sydney

May 28, 2007
From: Carol Wallace

Concerning message #18665:

I was just wondering how common the Atagema intecta is around Sydney. I saw one of them today at Bare Island, the water it was in was only about 16 degrees, don't they prefer warm water??

Locality: Bare Island, 7 metres, NSW, Pacific Ocean, 18 January 2007. Length: 40 mm. Photographer: Carol Wallace.

Carol Wallace

geminikitty@yahoo.com.au

Wallace, C.E, 2007 (May 28) Re: Atagema intecta from Sydney. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19269

Dear Carol,
Yes this is A. intecta. It is basically a common tropical species but is not that uncommon at least as far down the east Australian coast as Sydney. During January the water temperature was fluctuating rather crazily down the east coast so this animal probably travelled south as a veliger larva in quite balmy weather. Most of these tropical visitors seem to be able to survive cooler temperatures than they are used to for some time, but I don't know of any studies that have been done to show just how long they can survive and breed in cooler than normal temperatures, or just what are their lower limits.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (May 28). Comment on Re: Atagema intecta from Sydney by Carol Wallace. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19269

Factsheet

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