Population differentiation supports multiple human-mediated introductions of the transatlantic exotic sponge Paraleucilla magna (Porifera, Calcarea)

Cavalcanti, Fernanda F.; Padua, André; Cunha, Haydée A.; Halasz, Mirna; Nikolić, Vedran; Barreto, Silvia Britto; Klautau, Michelle

doi:10.1007/s10750-020-04368-x

Cited by 9 publications

(5 citation statements)

References 102 publications

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“…Differently from other putative introduced species found close to ports and marinas (e.g., Paraleucilla magna, Klautau et al 2004;Longo et al 2007;Lanna et al 2015;Guardiola et al 2016;Cavalcanti et al 2020), C. aurea was usually found in mildly impacted environments/habitats: (1) underneath boulders in tide pools in Tres Hermanas Beach (San Juan de Marcona) and (2) among macroalgae in the subtidal area of Santa Rosa Island (Paracas Marine National Reserve). Nonetheless, both Peruvian localities are situated in areas that experienced intense maritime traffic during 1840-1860 because of "guano" (organic fertilizer obtained from the faeces of marine birds) extraction and shipping (Maino 1985;Arce 1997).…”

Section: The Occurrence Of Clathrina Aurea In Perumentioning

confidence: 85%

Evolutionary history of the calcareous sponge Clathrina aurea: genetic connectivity in the Western Atlantic and intriguing occurrence in the Eastern Pacific

et al. 2021

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Clathrina aurea was considered endemic to Brazil before being recorded from the Pacific (Peru) and the Caribbean Sea. We assessed the morphological variability, phylogeographic pattern and population genetic structure of the species across its geographic range to understand how habitat fragmentation/reduction can affect a widely distributed species with supposedly low dispersal capability. Samples from 15 localities in the Caribbean Sea (n = 8), Brazil (n = 5), and Peru (n = 2) were studied. Morphological analyses included characterisation of external morphology, skeleton composition, and spicules morphometry. Phylogenetic trees and haplotype network were constructed using rDNA sequences. Population structure was assessed using microsatellite loci (F ST fixation index and Discriminant Analysis of Principal Components). Morphological traits were consistent with C. aurea, although certain differences have been found, possibly due to environmental factors (temperature and pH). Phylogenetic analyses corroborated the conspecificity of the individuals and indicated higher genetic variability in individuals from Brazil and Caribbean, compared to Peru. Phylogeographic analyses indicated that Brazil had the oldest population of C. aurea, suggesting the expansion of this species across the Amazon River to the Caribbean and its connectivity through intermediate populations (e.g., Abrolhos). Population structure analyses also revealed high levels of genetic connectivity between the Caribbean and Northeast Brazil and among Southeast Brazilian localities. All analyses indicated isolation or restricted gene flow between Pacific and Atlantic populations. This, combined with the reduced genetic diversity in Peru and the supposedly limited larval dispersal capability, suggest a possible non-natural dispersion; however, we cannot exclude other hypotheses.

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Section: The Occurrence Of Clathrina Aurea In Perumentioning

confidence: 85%

Evolutionary history of the calcareous sponge Clathrina aurea: genetic connectivity in the Western Atlantic and intriguing occurrence in the Eastern Pacific

et al. 2021

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“…2 and 3 ). Although there is little evidence of sexual reproduction in A. gerardogreeni , it is possible exchange organisms between populations through larval dispersal by currents or by hitchhiking invasive and floating buds [ 8 , 11 , 12 , 54 ]. Under the premise that A. gerardogreeni could develop a type of clavablastula larva like its congeneric ( A. aerophoba ) [ 28 ], it is possible there is limited dispersal.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, the use of Next Generation Sequencing (NGS) platforms in the development of hypervariable markers, such as microsatellites, has increased significantly in population genetic studies of Porifera e.g., [ 15 , 16 ]. These markers have shown to be powerful tools for population studies providing valuable information about their population dynamics e.g., [ 9 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Novel microsatellite markers suggest significant genetic isolation in the Eastern Pacific sponge Aplysina gerardogreeni

Salas-Castañeda,

Saavedra-Sotelo,

Cruz-Barraza

et al. 2024

Mol Biol Rep

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Background The Eastern Tropical Pacific (ETP) harbors a great diversity of Porifera. In particular, the Aplysina genus has acquired biotechnological and pharmacological importance. Nevertheless, the ecological aspects of their species and populations have been poorly studied. Aplysina gerardogreeni is the most conspicuous verongid sponge from the ETP, where it is usually found on rocky-coralline ecosystems. We evaluated the polymorphism levels of 18 microsatellites obtained from next-generation sequencing technologies. Furthermore, we tested the null hypothesis of panmixia in A. gerardogreeni population from two Mexican-Pacific localities. Methods and results A total of 6,128,000 paired reads were processed of which primer sets of 18 microsatellites were designed. The loci were tested in 64 specimens from Mazatlan, Sinaloa (N = 32) and Isabel Island, Nayarit (N = 32). The microsatellites developed were moderately polymorphic with a range of alleles between 2 and 11, and Ho between 0.069 and 0.785. Fifteen loci displayed significant deviation from the Hardy–Weinberg equilibrium. No linkage disequilibrium was detected. A strong genetic structure was confirmed between localities using hierarchical Bayesian analyses, principal coordinates analyses, and fixation indices (FST = 0.108*). All the samples were assigned to their locality; however, there was a small sign of mixing between localities. Conclusions Despite the moderate values of diversity in microsatellites, they showed a strong signal of genetic structure between populations. We suggest that these molecular markers can be a relevant tool to evaluate all populations across the ETP. In addition, 17 of these microsatellites were successfully amplified in the species A. fistularis and A. lacunosa, meaning they could also be applied in congeneric sponges from the Caribbean Sea. The use of these molecular markers in population genetic studies will allow assessment of the connectivity patterns in species of the Aplysina genus.

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“…However, contrary to our expectations, populations of P. magna (in which individuals also rely on carrier cells for their fertilization [unpubl. data]) deviated from Hardy-Weinberg equilibrium, possibly due to self-fertilization (Cavalcanti et al, 2020). Future studies on population genetics of different species of Calcarea will be important to help understand how fertilization strategy impacts population structure.…”

Section: Fertilization and The Importance Of The Carrier Cellmentioning

confidence: 99%

Oogenesis and embryogenesis in a cryptogenic species of calcareous sponge (Calcaronea, Heteropiidae) in the southwestern Atlantic

Lanna

Klautau

2022

Invertebrate Biology

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Calcarea is a diverse group of sponges, in which individuals are generally small and found in cryptic habitats. These characteristics hamper the access to them and, consequently, the knowledge about several aspects of their biology, including reproduction. Little is known about many reproductive aspects of these sponges and broad generalizations are made upon few studied species. Therefore, investigations dealing with the oogenesis and embryogenesis of more species are still necessary. Sycettusa hastifera is an alien species in the southwestern Atlantic. Knowledge about its reproduction would not only help to improve our comprehension of reproduction in Calcaronea but would also help to understand the capacity of this exotic species to colonize. Histological and electron microscopy analyses of individuals sampled at Arraial do Cabo (Rio de Janeiro, Brazil) showed that oogenesis in S. hastifera was long (4-6 months) and nutrients were acquired by association with nurse cells and endocytosis of bacteria, yielding heterogeneous and complex yolk inclusions. Cleavage, inversion, and amphiblastula larvae were similar to what has been observed in other calcaroneans, except for the larval cavity lacking amoeboid cells and the relatively long swimming period of the amphiblastula (on average 12 h, but reaching 72 h). Our results indicate that the vitellogenic mechanism characterized as mixed (an ancestral characteristic of Calcaronea) is strongly influenced by autosynthesis; during cleavage, cell fates could be determined from embryo to larva; and inversion of the embryo (which will become the amphiblastula larva) directly into the choanocyte chamber is an ancestral characteristic of Calcaronea. Despite the absence of amoeboid cells or other structures to nourish the larva, the long swimming period suggests that vitellogenesis is sufficient for the maintenance of the embryo and larva until metamorphosis. This characteristic may facilitate the spread of this cryptogenic species to new regions.

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Population differentiation supports multiple human-mediated introductions of the transatlantic exotic sponge Paraleucilla magna (Porifera, Calcarea)

Cited by 9 publications

References 102 publications

Evolutionary history of the calcareous sponge Clathrina aurea: genetic connectivity in the Western Atlantic and intriguing occurrence in the Eastern Pacific

Evolutionary history of the calcareous sponge Clathrina aurea: genetic connectivity in the Western Atlantic and intriguing occurrence in the Eastern Pacific

Novel microsatellite markers suggest significant genetic isolation in the Eastern Pacific sponge Aplysina gerardogreeni

Oogenesis and embryogenesis in a cryptogenic species of calcareous sponge (Calcaronea, Heteropiidae) in the southwestern Atlantic

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