New Leucettidae de Laubenfels, 1936 (Porifera, Calcarea) from Western Australia

Leocorny, Pedro; Alencar, Aline; Fromont, Jane; Klautau, Michelle

doi:10.11646/zootaxa.4175.4.2

Cited by 622 publications

(1 citation statement)

References 14 publications

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“…More study is necessary to differentiate the species. Leocorny et al (2016) recently studied the Leucetta species from (sub-)tropical Australian waters: Leucetta prolifera (Carter, 1878) (originally as Teichonella), L. insignis Row & Hozawa, 1931, L. infrequens Row & Hôzawa, 1931, L. expansa Row & Hôzawa, 1931, L. villosa Wörheide & Hooper, 1999, L. foliata Leocorny et al, 2016and L. purpurea Leocorny et al, 2016. Of these species, two are slightly similar to the new species in having a folded habitus, L. prolifera and L. foliata, but the former has the folds broadly bladed with rows of oscules on the upper surface of the folds, whereas the latter has the folds sharply and thinly bladed.…”

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confidence: 99%

Calcareous sponges of the Western Indian Ocean and Red Sea

Soest

Voogd

2018

Zootaxa

942

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Past taxonomic studies of Western Indian Ocean and Red Sea Calcarea have been few and sporadic (e.g. Schuffner 1877, Jenkin 1908, Row 1909, Dendy 1913, 1916, Voigt et al. 2017, 2018). Nevertheless, approximately 70 species are known from these studies for the considered region, but the descriptions of the older records often lack sufficient details for reliable identification. We studied the Western Indian Ocean Calcarea collection kept in the Naturalis Biodiversity Center. Available specimens numbered 145, collected in the Red Sea, Seychelles, Maldives, Mayotte and Rodrigues, in addition to incidental samples from Oman, the Lakshadweep Islands, the Mozambique Channel, and Eastern South Africa. Using a combination of techniques (in situ and ‘on deck’ photography, detailed field notes, light microscopic studies and measurements, SEM microscopy, and selected DNA sequencing) we identified 45 species, divided over the two main classes Calcinea (24 spp.) and Calcaronea (21 spp.). Not all species could be definitely assigned to an already described or a new species, as seven remained qualified as ‘spec.’ or ‘aff.’ for reasons of insufficient material or lack of details of in situ habitus. Sixteen species appeared to be new to science: Borojevia voigti sp.nov., Borojevia tubulata sp.nov., Borojevia pirella sp.nov., Clathrina rodriguesensis sp.nov., Clathrina maremeccae sp.nov., Clathrina repens sp.nov., Leucascus schleyeri sp.nov., Leucetta sulcata sp.nov., Ute insulagemmae sp.nov., Leucandra pilula sp.nov., Leucandra mozambiquensis sp.nov., Grantessa woerheidei sp.nov., Sycettusa hirsutissima sp.nov., Vosmaeropsis glebula sp.nov., Paraleucilla erpenbecki sp.nov., and Kebira tetractinifera sp.nov. For a selection of the identified species from the Western Indian Ocean and the Red Sea (30 spp.), as well as from Indonesian material (22 spp.) published previously (see Van Soest & De Voogd 2015) we obtained sequences of the partial 28S gene of nuclear rDNA (C2–D2 region, cf. Voigt & Wörheide 2016). The sequences of the Western Indian Ocean and Red Sea species were used to assign these to genera and families based on a phylogenetic analysis using MEGA pack vs. 06.6 for Mac of the available dataset. The Indonesian sequences supplemented by partial 28S sequences taken from the Sponge Barcode Project website and the NCBI website were included in the phylogenetic analysis to confirm the assignments. The results were compared and discussed with additional information on regional Calcarea not represented in our material. The latter chapter yielded the discovery of a preoccupied name leading to Sycon oscari nom.nov. for a species described from Mauritius.

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Section: Figures 6a-d 7a-dmentioning

confidence: 99%

Calcareous sponges of the Western Indian Ocean and Red Sea

Soest

Voogd

2018

Zootaxa

942

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Integrative systematics of clathrinid sponges: morphological, reproductive and phylogenetic characterisation of a new species of Leucetta from Antarctica (Porifera, Calcarea, Calcinea) with notes on the occurrence of flagellated sperm

Riesgo

Cavalcanti

Kenny

et al. 2018

Invert. Systematics

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Our study reports on the occurrence of a new species of Leucetta (Calcinea, Calcarea) from the Southern Ocean, Leucetta giribeti, sp. nov., collected in the shallow waters (15m depth) of Deception Island, South Shetland Islands. This new taxon is described based on a combination of morphological and molecular data, including the description of oocytes, embryos, larvae and sperm found in the choanosome. While female reproductive elements showed great similarities with those of other calcineans, sperm is reported here for the first time in the whole Calcinea subclass. Sperm cells are flagellated and possess a typical spermatic mid-piece, which is usually observed in cnidarians. In our phylogenetic analyses, we recovered Leucetta giribeti, sp. nov. as sister species of a clade formed by species of the genera Leucetta, Pericharax and Leucettusa. Although the clade in which Leucetta giribeti, sp. nov. is placed is supported by molecular and morphological features, we cannot propose a new genus due to uncertainties regarding the type species of the genus, Leucetta primigenia Haeckel, 1872. Our study reinforces the relevance of integrative approaches in the description of new taxa and contributes to resolving the poorly known reproductive patterns of Antarctic sponge species.

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2021

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New Leucettidae de Laubenfels, 1936 (Porifera, Calcarea) from Western Australia

Cited by 622 publications

References 14 publications

Calcareous sponges of the Western Indian Ocean and Red Sea

Calcareous sponges of the Western Indian Ocean and Red Sea

Integrative systematics of clathrinid sponges: morphological, reproductive and phylogenetic characterisation of a new species of Leucetta from Antarctica (Porifera, Calcarea, Calcinea) with notes on the occurrence of flagellated sperm

GBIF custom download for research into locational uncertainty in the world's preserved specimens collections

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