Identifying Sponges

Key to California Porifera (Page 097)

( From page 096 A) Spicule mean > 121 μm.
[A]
Sponge lobate to tubular, may branch or anastomose.
Habitat: intertidal, in bays.
Color: light tan, orange-brown, or cinnamon.
cc097A.jpg
Chalinula loosanoffi (Hartman, 1958)
Sponge: Lobate to tubular the tubes to 6.5 cm high. Oscula: terminal, 3.5-5.0 mm across. Produces gemmules.
Color: Alive: Light tan, orange-brown, cinnamon.
Spicules: Megascleres: (1) Oxeas: 66 -85-156- 185 um. x 2.0 - 10 um. Range and means in any specimen highly variable
Skeleton: Anisotropic reticulation, ladder-like, tracts of 2-6 or more spicules, most commonly multispicular. Cross spicules single and horizontal forming a loose reticulation and with chains of 2-4 spicules fastened end to end. Skeletal structure highly variable.
Distribution: Southern and Central California, in bays and harbors, commonly on floats. Originally reported from the U.S. East Coast.
Depth: Intertidal.
Note: Possibly synonymous with Haliclona sp. B, Hartman, 1975 and Haliclona ecbasis of Fell, 1970. These three species need special attention as identification of them in California is equivocal. It is also possible that we are dealing with a group of sister species which would make identification difficult.
[B]
Sponge encrusting.
Habitat: subtidal, open water.
Color: violet to rose.
Haliclona cf. permollis (Bowerbank, 1866) [of Sim & Bakus, 1986]
Sponge: Encrusting to 4 cm. thick. Oscula: elevated and rather sparsely spaced.
Color: Alive: Violet to rose.
Spicules: Megascleres: (1)Oxeas: 110 -124- 140 um. x 4 -5.5- 7 um.
Skeleton: No information.
Distribution: Southern California, Farnsworth Bank.
Depth: Subtidal, 21 m.
Note: This species was not fully described by Bakus & Green and spicule size does not match that of H. permollis. No illustrations are available. H. permollis (Bowerbank, 1866) was considered a cosmopolitan species by many but. H. permollis is a synonym of H. cineria Grant, 1826 and none of the reports of it from the California coast conform to this North East Atlantic Ocean species.
Note 2: This may be the common Haliclona identified by Hartman, 1975 as Haliclona (Haliclona) sp. A. but the spicule range is higher than that reported for Haliclona (Haliclona) sp. A. See page 98 A and 99A for additional information.
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