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Post by another specialist on May 20, 2005 14:44:18 GMT
Emerald seaslug
Phyllaplysia smaragda
The emerald seaslug (Phyllaplysia smaragda) was discovered in the early 1970s where it was
relatively common in the Indian River lagoon system on Florida's Atlantic coast [158, 159].
It may have specialized on the epiphytic algae growing on the basal stems of the seagrass
Syringodium. This habitat was extirpated from the species type locality, but remains
widespread elsewhere in Florida and the Caribbean. It was last seen in 1981.
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Post by another specialist on Aug 12, 2005 5:45:18 GMT
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Post by Melanie on May 7, 2006 11:25:34 GMT
Clark (24, 25, and personal communication 1996) noted that the anaspidean seaslug Phyllaplysia smaragda was “possibly extinct.” It was first described in 1977 and last collected in 1981, and only known from portions of the Indian River Lagoon system on the east coast of Florida. It may have specialized on the epiphytic algae growing on the basal stems of the seagrass Syringodium; this habitat was extirpated from the type locality of the slug, but remains widespread elsewhere in Florida and the Caribbean. Mikkelsen et al (89) reported specimens collected in 1980 from the seagrass Thalassia in the Indian River Lagoon, but Clark, in Mikkelsen et al (89), felt that these may have been misidentified specimens of the related slug P. engeli. Clark (24, 25, and personal communication 1996) further noted that the sacoglossan seaslug Stiliger vossi, described in 1960 and known only from Biscayne Bay, in southeast Florida, has never been collected again, despite extensive searching, and he speculated that it was also extinct. Given the relatively recent discovery of these two seaslugs in the latter half of the twentieth century, and given that much of the Caribbean has not been thoroughly explored for rare opisthobranchs, we note these here as possible extinctions but do not formally admit them to Table 4 at this time. web.macam98.ac.il/~biology/courses/aquat_biol/historical%20extintions.pdfPhyllaplysia smaragda K.B. Clark, 1977 or Emerald Leaf Slug Distribution : along Florida's Atlantic Coast Description : feeds on algae growing on the seagrass Syringodium. Discovered in 1970 and not been seen since 1982. It is now reported [extinct]], even if it was never listed on the Endangered Species Act. en.wikipedia.org/wiki/Phyllaplysia |
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Post by another specialist on May 7, 2006 21:57:03 GMT
Note: I suspect this animal is Phyllaplysia engeli which is widespread in the warm water western Atlantic from Brazil to the Caribbean. However Kerry Clark (1977) described a second species from Florida, Phyllaplysia smaragda which may be this animal. Clark notes a number of anatomical differences which I obviously can't compare, and a few external differences. In particular he described P. engeli as having a rounded body while P. smaragda was elongated. He also described the oral tentacles of P. engeli to be flattened and distinctly separated while those of P. smaragda were rounded and joined at the base. Unfortunately in this photo the animal seems to be rounded as in P. engeli but has oral tentacles that fit the description of P. smaragda. References: • Clark, K.B. (1977) Phyllaplysia smaragda (Opisthobranchia: Notarchidae), a new anaspidean from Florida. Bulletin of Marine Science, 27(4): 651-657. • Marcus, Er. (1955) Opisthobranchia from Brazil. Boletim da Faculdade de Filosofia, Ciencias e Letras. Universidade de Sao Paulo, Zoologia, 20: 89-261. (Pls. 1-30) • Marcus, Ev. (1972) On the Anaspidea (Gastropoda: Opisthobranchia) of the warm waters of the western Atlantic. Bulletin of Marine Science, 22(4): 841-874. • Marcus, Ev. & Hughes, H.P.I. (1974) Opisthobranch mollusks from Barbados. Bulletin of Marine Science, 24(3): 498-532. • Redfern. C., 2001. Bahamian Seashells: a Thousand Species from Abaco, Bahamas. www.seaslugforum.net/showall.cfm?base=phylenge |
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Post by another specialist on May 7, 2006 21:57:53 GMT
Phyllaplysia smaragda Clark, 1977 Range: 28.6°N to 28°N; 81°W to 0°W Synonymy Phyllaplysia cymodocea Ev. Marcus, 1977 Phyllaplysia smaragda Clark, 1977 Details Phyllaplysia smaragda Clark, 1977, Range: 28.6°N to 28°N; 81°W to 80°W Distribution: USA: Florida: East Florida References: Clark (1995) NW Phyllaplysia cymodacea sic, [Not available] Comments: Error for cymodocea by Turgeon et al. (1988). Phyllaplysia cymodocea Ev. Marcus, 1977, [Not available] Attributed to: K. B. Clark MS Range: 28°N Comments: Nude name. data.acnatsci.org/wasp/search.php/10235 |
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Deleted
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Post by Deleted on Dec 6, 2009 20:00:16 GMT
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Post by Melanie on Dec 6, 2009 20:35:53 GMT
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Post by Sebbe on Oct 24, 2024 17:52:25 GMT
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