Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from southeastern Australia

Cohen, Brian F.; Poore, Gary C. B.

doi:10.24199/j.mmv.1994.54.13

Cited by 86 publications

(107 citation statements)

References 9 publications

(16 reference statements)

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“…Gnathiids have 3 juvenile stages (Wägele 1988); hence the above differences may be due to variation in emergence patterns among juvenile stages, with younger stages emerging during the day and older stages emerging at night; alternatively they may be due to variation in emergence patterns among species. Currently, gnathiids are identified from adult males only (Cohen & Poore 1994). A method of identifying juvenile gnathiids using rDNA has been developed (Grutter et al 2000).…”

Section: Discussionmentioning

confidence: 99%

Emergence rates from the benthos of the parasitic juveniles of gnathiid isopods

Grutter¹,

Lester²,

Greenwood³

2000

Mar. Ecol. Prog. Ser.

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Variation in the rate at which parasitic gnathiid isopod juveniles emerged from the benthos at Lizard Island, Great Barrier Reef, Australia, was examined (1) every 4 or 8 h throughout the day and night over a 24 h period, (2) over a 12 h period during the day or night, and (3) during different lunar phases (weeks). The number of gnathiids sampled per 4 or 8 h was low, with only 30% of the traps containing gnathiids and the abundance ranging from 0 to 3 gnathiids m . During the third and fifth weeks sampled, more gnathiids emerged during the day than at night. This coincided with the full moon and new moon. Most gnathiids that emerged from the reef during the day (98%) had not fed, in contrast to those sampled at night (71%). Of the gnathiids with no engorged gut, most (97%) of those collected during the day were small (≤1 mm) compared to those collected at night (19%), the latter being mostly >1 mm. Of the gnathiids with an engorged gut, most were sampled at night (83%) and 97% were >1 mm in size. These percentages suggest differences in the emergence behaviour among life stages or species of gnathiids. This study, which shows that gnathiids do emerge during the day and supports other studies showing that gnathiids also attack fishes during the day, has important implications for understanding the role of cleaner fish and their main food source, gnathiids, as it shows there is a constant source of gnathiids emerging from the reef during the day and night in search of hosts.

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Section: Discussionmentioning

confidence: 99%

Emergence rates from the benthos of the parasitic juveniles of gnathiid isopods

Grutter¹,

Lester²,

Greenwood³

2000

Mar. Ecol. Prog. Ser.

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“…5. Lizard Island, Great Barrier Reef, (records taken from Bruce 1986, Cohen andPoore 1994;Holdich 1982a, b, 1984;Kensley 1982;Poore 1975Poore , 1978Poore and Kensley 1981;and Poore and Lew Ton 1985, 1986, 1988a, b, c, d, 1990, as well as unpublished records from two collecting trips by the author). 6.…”

Section: Methodsmentioning

confidence: 99%

Estimates of species diversity of free-living marine isopod crustaceans on coral reefs

Kensley

1998

Coral Reefs

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A core group of isopod crustacean genera appears to be present at many coral reef sites. Within these genera, however, species show high local endemicity. Based on the estimated percentage of endemism for the Atlantic (19% for individual sites, 90% for the tropical western Atlantic as a unit), the Indian Ocean (50%), the eastern-central Pacific (80%), and the western Pacific (40%), it is estimated that there are some 5,000 to 13,000 isopod species in the world's coral reefs, and that some 2,000 to 6,000 of these are endemics. (At present, approximately 4,400 species of marine and 560 species of freshwater isopods have been described.) Based on the crudely estimated relative abundances of other peracaridan crustaceans in coral reefs (compared to isopods), the total diversity of reef amphipods, tanaidaceans, cumaceans, and mysidaceans is approximately 54,500 species.

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“…Anthura gracilis Montagu, 1808 has a typical anthuroid uropod, swollen pereopod 1 propodus with a toothed palm, and long pleotelson (Wägele 1980). Th e fl attened uropodal peduncle and its almost cylindrical rami that characterise the new genus are unique within Anthuroidea and must be regarded as a reversal to the form seen in Gnathiidae, the probable sister taxon of Anthuroidea (Brandt and Poore 2003;Cohen and Poore 1994 Etymology. Casuarina, from the type locality and continuing the convention initiated by Poore and Lew Ton (1985) of naming Australian anthuroids after Australian plant genera (noun in apposition).…”

Section: Anthuridae Leach 1814mentioning

confidence: 99%

Leipanthura casuarina, new genus and species of anthurid isopod from Australian coral reefs without a "five-petalled" tail (Isopoda, Cymothoida, Anthuroidea)

Poore¹

2009

762

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Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from southeastern Australia

Cited by 86 publications

References 9 publications

Emergence rates from the benthos of the parasitic juveniles of gnathiid isopods

Emergence rates from the benthos of the parasitic juveniles of gnathiid isopods

Estimates of species diversity of free-living marine isopod crustaceans on coral reefs

Leipanthura casuarina, new genus and species of anthurid isopod from Australian coral reefs without a "five-petalled" tail (Isopoda, Cymothoida, Anthuroidea)

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