Hemibranchiate sphaeromatids (Crustacea: Isopoda) from Queensland, Australia, with a world-wide review of the genera discussed

Harrison, K.C.; Holdich, D. M.

doi:10.1111/j.1096-3642.1984.tb01175.x

Cited by 67 publications

(69 citation statements)

References 51 publications

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“…Unlike all other species of the genus, S. terebrans lacks an appendix masculina (Harrison & Holdich, 1984;Harrison & Ellis, 1991). The absence of an appendix masculina, the apparent absence of males in open waters, and the fact that S. terebrans practises precopulatory mate guarding (pers.…”

Section: Introductionmentioning

confidence: 99%

How Can I Mate Without An Appendix Masculina? The Case of Sphaeroma Terebrans Bate, 1866 (isopoda, Sphaeromatidae)

Messana

2004

Crustac

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Several hours mating behaviour of the woodborer isopod, Sphaeroma terebrans were recorded using a video camera. S. terebrans, the only species in the genus to lack an appendix masculina, has a peculiar way of mating that is completely different from that in other Isopoda. Instead of introducing the sperm into the genital opening of the female, the male releases it into the water current created by the beating of the female pleopods. The origin of this adaptation is discussed. RIASSUNTOIl comportamento sessuale dell'isopode Sphaeroma terebrans, è stato filmato per diverse ore, attraverso una telecamera. S. terebrans, l'unica specie del genere ad essere sprovvista di una appendix masculina, ha un modo di accoppiarsi del tutto particolare che è completamente differente da quello degli altri isopodi. Il maschio invece di introdurre lo sperma nella apertura genitale femminile, lo rilascia nella corrente d'acqua creata dal battito dei pleopodi. L'origine di questo adattamento viene discussa.

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Section: Introductionmentioning

confidence: 99%

How Can I Mate Without An Appendix Masculina? The Case of Sphaeroma Terebrans Bate, 1866 (isopoda, Sphaeromatidae)

Messana

2004

Crustac

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“…In the Sphaeromatidae the reportedly polymorphic Paracassidina pectinata (Baker, 1911) (Holdich and Harrison 1981) proved to be six species (Bruce 1994), and a similar swarm of species exists within the genus Oxinasphaera (Bruce 1997). Th e purportedly highly variable Cilicaeopis whiteleggei (Stebbing, 1905) (see Harrison and Holdich 1984), known to occur throughout the Indo-West Pacifi c from East Africa to Fiji, will likely prove to be another such species complex. Within the Cirolanidae Cirolana parva Hansen, 1890 was once considered to be one world-wide species, but is a large swarm of 25 described species that have an extremely uniform morphology (e.g.…”

Section: Species Polymorphism or Cryptic Species?mentioning

confidence: 99%

New genera and species of the marine isopod family Serolidae (Crustacea, Sphaeromatidea) from the southwestern Pacific

Bruce¹

2009

892

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Th e marine isopod family Serolidae is reviewed for the oceanic regions of the tropical and subtropical southwestern Pacifi c, namely from off Lord Howe Island, Norfolk Island, northern Coral Sea, New Caledonia and Fiji. Two new genera are established: Sedorolis gen. n., monotypic, from New Caledonia and Myopiarolis gen. n., a widespread Southern Hemisphere genus with 11 (eight described) species. Th e following new species are described: Heteroserolis pellucida (New Caledonia), Sedorolis simplex (New Caledonia), Myopiarolis koro (Fiji), M. systir (New Caledonia), M. norfanz (Lord Howe Plateau and off Norfolk Island), M. lippa (northern Coral Sea), and Th ysanoserolis orbicula (New Caledonia). Keys are provided to the serolid genera and the species of Myopiarolis from the southwestern Pacifi c. Th e genus Caecoserolis Wägele, 1994 is redefi ned and restricted to the type species.

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“…Populations of Sphaeroma are usually found within the brackish regions of estuaries (Harrison and Holdich 1984, Murata and Wada 2002, Davidson 2008 but are known to tolerate extreme temperatures and a wide range of salinities (Riegel 1959, Jansen 1971). The temperate species S. quoianum is widely distributed throughout the intertidal and most prevalent between salinities of 5-31 PSU in Coos Bay, Oregon, Tamar estuary, Tasmania, and Port Phillip Bay, Australia (Davidson et al 2008b).…”

Section: Estuarine Distributionmentioning

confidence: 99%

“…Burrowing sphaeromatid isopods (native to the Indo and West Pacific; Carlton and Iverson 1981, Harrison and Holdich 1984, Carlton and Ruckelshaus 1997 bore into numerous substrata used in marine structures and facilities in temperate and tropical regions (Chilton 1919, Kofoid and Miller 1927, Carlton 1979. These borers are especially destructive to expanded polystyrene floats (commonly known as Styrofoam) used in many docks.…”

Section: Introductionmentioning

confidence: 99%

Biological Erosion of Marine Habitats and Structures by Burrowing Crustaceans

Davidson¹

2000

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Marine bioeroders, borers, and burrowers can have drastic effects to marine habitats and facilities. By physically altering the structure of marine habitats, these organisms may elicit ecosystem-level effects that cascade through the community. While borer damage is typically restricted to a few substratum types, burrowing isopods in the genus Sphaeroma attack a diversity of substrata in tropical and temperate systems. My dissertation examined how boring sphaeromatid isopods affect coastal habitats (saltmarshes, mangroves) and other estuarine substrata as well as marine structures. I used a combination of lab and mensurative field experiments to quantify the effects of boring by isopods and examine how select factors affect the colonization, hence burrowing damage by isopods. I explored these questions primarily using the temperate To examine the small-scale factors that mediate colonization and boring, I conducted a series of binary choice experiments. I found the presence of conspecifics, biofilm, and shade were important factors influencing colonization. These small scale factors likely explain why isopod attack is focused in some substrata. Finally, to examine the boring effects of tropical isopods in mangroves, I examined the associations between burrowing by S. terebrans and mangrove performance and fecundity. I found negative relationships between boring effects and performance and fecundity in two mangrove species in a restored mangrove stand in Taiwan. Together, these studies elucidate the effects of bioerosive isopods on saltmarshes, mangroves, and marine structures. However, the similar mechanisms involved in bioerosion in other boring species suggest that these results can be used to infer similar effects of other borers. In addition, since many species of sphaeromatid isopods have been introduced, this research shows how the effects of a non-native bioeroder can damage marine facilities and degrade and alter marine habitats.Through biological erosion and thus changing the physical structure of a marine habitat these non-native species can have ecosystem-level effects that cascade throughout the local community.iii Acknowledgements

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Hemibranchiate sphaeromatids (Crustacea: Isopoda) from Queensland, Australia, with a world-wide review of the genera discussed

Cited by 67 publications

References 51 publications

How Can I Mate Without An Appendix Masculina? The Case of Sphaeroma Terebrans Bate, 1866 (isopoda, Sphaeromatidae)

How Can I Mate Without An Appendix Masculina? The Case of Sphaeroma Terebrans Bate, 1866 (isopoda, Sphaeromatidae)

New genera and species of the marine isopod family Serolidae (Crustacea, Sphaeromatidea) from the southwestern Pacific

Biological Erosion of Marine Habitats and Structures by Burrowing Crustaceans

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