A revision of the genus Mycale (Poecilosclerida: Mycalidae) from the Mexican Pacific Ocean

Carballo, José Luís; Cruz‐Barraza, José Antonio

doi:10.1163/18759866-07904003

Cited by 18 publications

(8 citation statements)

References 33 publications

(33 reference statements)

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“…nov., in one locality from the south of Gulf of Mexico). Contemporary authors also have discussed the importance of the Isthmus of Panama (raised about 3.5 MA ago) for Atlantic and Pacific sponge fauna, and the possible absence of connectivity of putative conspecific sponge populations from both sides of the Isthmus (Boury-Esnault et al ., 1999), preferring to keep separated names for related species (see Hajdu & Rützler, 1998; Carballo & Cruz-Barraza, 2010).…”

Section: Resultsmentioning

confidence: 99%

Morphological and molecular taxonomy of Timea (Porifera: Timeidae) from the Gulf of Mexico with the description of a new species and re-description of T. hechteli

Cruz‐Barraza

Vega²,

Rützler

et al. 2020

J. Mar. Biol. Ass.

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We present the description of a new species of genus Timea and the re-description of T. hechteli from cryptic habitats in the Gulf of Mexico. Timea alcoladoi sp. nov. is an encrusting, pale orange sponge, with megascleres ranging from styles to subtylostyles (185–990 μm long) and a single category of microscleres, spherostrongilaster characterized by a prominent rounded centre (5–15 μm in diameter). Timea hechteli was established by Lehnert & Heimler, based on the description of a very small specimen, previously recorded as Halicometes stellata by Little, and transferred to the genus Timea by Hechtel. However, because the name ‘stellata’ was preoccupied by the type species, T. stellata, the species was renamed T. hechteli, to honour George Hechtel. After the revision of Little's material and new material, we present the re-description of T. hechteli. For both species, partial sequences of COI mtDNA and ITS1-5.8S-ITS2 rDNA region were obtained in order to complement our morphological taxonomy and establish their molecular systematic position among tethyids. Tree topologies for both loci were congruent by grouping together our species as a sister group of the main Tethyida clade, which is according to the current systematics of the group. The COI fragment showed Timea as polyphyletic due to two sequences of Timea (from GenBank) that were clustered with other sponge groups. The species described here are the first record of the genus Timea from the Mexican coast of the Gulf of Mexico. A taxonomic key for West Atlantic Timea species is also presented.

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Section: Resultsmentioning

confidence: 99%

Morphological and molecular taxonomy of Timea (Porifera: Timeidae) from the Gulf of Mexico with the description of a new species and re-description of T. hechteli

Cruz‐Barraza

Vega²,

Rützler

et al. 2020

J. Mar. Biol. Ass.

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“…Consequently, two years ago we started an intensive study of diverse non-verongiid marine demosponges with the aim to purify and identify chitin from other taxa of marine sponges. Especially, we have taken advantage of the worldwide distribution of the members of the genus Mycale [ 37 ] (Demospongiae: Heteroscleromorpha: Poecilosclerida: Mycalidae) living in a considerable depth range from intertidal to abyssal depth [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ]. About 251 valid species belong to the genus Mycale are currently accepted from a pool of more than 500 nominal names [ 49 , 51 , 52 ].…”

Section: Introductionmentioning

confidence: 99%

First Report on Chitin in a Non-Verongiid Marine Demosponge: The Mycale euplectellioides Case

Żółtowska-Aksamitowska

Shaala

Youssef

et al. 2018

Marine Drugs

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Sponges (Porifera) are recognized as aquatic multicellular organisms which developed an effective biochemical pathway over millions of years of evolution to produce both biologically active secondary metabolites and biopolymer-based skeletal structures. Among marine demosponges, only representatives of the Verongiida order are known to synthetize biologically active substances as well as skeletons made of structural polysaccharide chitin. The unique three-dimensional (3D) architecture of such chitinous skeletons opens the widow for their recent applications as adsorbents, as well as scaffolds for tissue engineering and biomimetics. This study has the ambitious goal of monitoring other orders beyond Verongiida demosponges and finding alternative sources of naturally prestructured chitinous scaffolds; especially in those demosponge species which can be cultivated at large scales using marine farming conditions. Special attention has been paid to the demosponge Mycale euplectellioides (Heteroscleromorpha: Poecilosclerida: Mycalidae) collected in the Red Sea. For the first time, we present here a detailed study of the isolation of chitin from the skeleton of this sponge, as well as its identification using diverse bioanalytical tools. Calcofluor white staining, Fourier-transform Infrared Spcetcroscopy (FTIR), electrospray ionization mass spectrometry (ESI-MS), scanning electron microscopy (SEM), and fluorescence microscopy, as well as a chitinase digestion assay were applied in order to confirm with strong evidence the finding of a-chitin in the skeleton of M. euplectellioides. We suggest that the discovery of chitin within representatives of the Mycale genus is a promising step in their evaluation of these globally distributed sponges as new renewable sources for both biologically active metabolites and chitin, which are of prospective use for pharmacology and biomaterials oriented biomedicine, respectively.

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“…The molecular evidence (ITS) did not match the morphological data according to Nichols & Barnes () and so this amphi‐American clade remains unnamed. Another suspected amphi‐American sponge was recently reported by Carballo & Cruz‐Barraza (), who found the former Tropical West Atlantic endemic Mycale aff. magnirhaphidifera van Soest, in the Mexican Pacific.…”

Section: Discussionmentioning

confidence: 83%

Integrative taxonomy of calcareous sponges (subclass Calcinea) from the Peruvian coast: morphology, molecules, and biogeography

et al. 2015

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Understanding of evolution and systematics of Calcarea (Porifera) have not yet met a corresponding increase in the knowledge of diversity and distribution of these sponges in several parts of the world. Peru is an emblematic example of this lack of taxonomic knowledge, as only three shallow-water species of sponges have hitherto been reported from its 3000 km coast. With the aim of studying sponges of Peru, an integrative taxonomy approach (morphology, molecules, and biogeography) was used in order to achieve sound species identifications. The first findings of Peruvian calcareous sponges are presented here. Eight species are described in the subclass Calcinea, of which five are new to science. The retrieved biogeographical patterns are either locally endemic, widespread, or discontinuous over large areas. Clathrina antofagastensis was previously known from Chile, while C. aurea and Ernstia tetractina had been reported from the Atlantic (Brazil), and thus represent the first genetically confirmed tropical amphi-American distributions of species not yet found on both sides of the Isthmus of Panama. Our results reveal a richer Tropical East Pacific sponge fauna than the Warm Temperate South-Eastern Pacific one.

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A revision of the genus Mycale (Poecilosclerida: Mycalidae) from the Mexican Pacific Ocean

Cited by 18 publications

References 33 publications

Morphological and molecular taxonomy of Timea (Porifera: Timeidae) from the Gulf of Mexico with the description of a new species and re-description of T. hechteli

Morphological and molecular taxonomy of Timea (Porifera: Timeidae) from the Gulf of Mexico with the description of a new species and re-description of T. hechteli

First Report on Chitin in a Non-Verongiid Marine Demosponge: The Mycale euplectellioides Case

Integrative taxonomy of calcareous sponges (subclass Calcinea) from the Peruvian coast: morphology, molecules, and biogeography

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