Trophic ecology and diet of Hydra vulgaris (Cnidaria; Hydrozoa)

Deserti, María Irene; Esquius, Karina Soledad; Escalante, Alicia H.; Acuña, Fabián H.

doi:10.1163/15707563-00002537

Cited by 13 publications

(7 citation statements)

References 31 publications

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“…Aquatic cnidarians and terrestrial insects sharing mutual parasites or viruses appears to be unlikely, given their approximately 600 million year divergence time and different habitats. Terrestrial insect larvae or imagos which fall into the water column may be preyed upon by Hydra , which are known to feed upon dipteran larvae and can engulf prey items in excess of 30mm in length [ 59 ]. As Teleopsis species, as well as members of other diopsid genera, often live over bodies of water [ 29 , 30 , 60 ] opportunistic predation may potentially allow diopsid mariner DNA to be taken up by Hydra cells resulting in horizontal transfer.…”

Section: Discussionmentioning

confidence: 99%

The evolutionary history of mariner elements in stalk-eyed flies reveals the horizontal transfer of transposons from insects into the genome of the cnidarian Hydra vulgaris

Grace

Carr

2020

PLoS ONE

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The stalk-eyed flies (Diopsidae, Diptera) are a family of approximately 100 species of calypterate dipterans, characterised by extended head capsules. Species within the family have previously been shown to possess six subfamilies of mariner transposons, with nucleotide substitution patterns suggesting that at least two subfamilies are currently active. The vertumnana subfamily has been shown to have been involved in a horizontal transfer event involving Diopsidae and a second dipteran family in the Tephritidae. Presented here are cloned and sequenced mariner elements from three further diopsid species, in addition to a bioinformatic analysis of mariner elements identified in transcriptomic and genomic data from the genus Teleopsis . The newly identified mariner elements predominantly fall into previously recognised subfamilies, however the publicly available Teleopsis data also revealed a novel subfamily. Three of the seven identified subfamilies are shown to have undergone horizontal transfer, two of which appear to involve diopsid donor species. One recipient group of a diopsid mariner is the Bactrocera genus of tephritid flies, the transfer of which was previously proposed in an earlier study of diopsid mariner elements. The second horizontal transfer, of the mauritiana subfamily, can be traced from the Teleopsis genus to the cnidarian Hydra vulgaris . The mauritiana elements are shown to be active in the recipient H . vulgaris and transposase expression is observed in all body tissues examined in both species. The increased diversity of diopsid mariner elements points to a minimum of four subfamilies being present in the ancestral genome. Both vertical inheritance and stochastic loss of TEs have subsequently occurred within the diopsid radiation. The TE complement of H . vulgaris contains at least two mariner subfamilies of insect origin. Despite the phylogenetic distance between donor and recipient species, both subfamilies are shown to be active and proliferating within H . vulgaris .

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Section: Discussionmentioning

confidence: 99%

The evolutionary history of mariner elements in stalk-eyed flies reveals the horizontal transfer of transposons from insects into the genome of the cnidarian Hydra vulgaris

Grace

Carr

2020

PLoS ONE

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“…Due to the importance of such research, many studies regarding feeding aspects in Cnidaria have been conducted [21]. For example, several studies have been carried out on feeding and trophic performances in Medusozoa (e.g., [22], [23], [24]), including freshwater species [25], due to their impacts on commercial marine and freshwater species [5].…”

Section: Discussionmentioning

confidence: 99%

Diversity of Feeding in Anthozoa (Cnidaria): A Systematic Review

Santos¹,

Reimer²,

Acuña³

et al. 2020

Preprint

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In this study, we performed a bibliographical review examining the scientific literature on “feeding in Anthozoa” theme for the period from 1890 to 2019, using scientific databases (Google Scholar) supplemented with additional literature. This study categorized published scientific papers on this topic by decade of publication, target taxa, variability of species studied in each order and main themes studied. As a result, 153 studies were found, and based on their content, it was observed that within Anthozoa, there has been a concentration of feeding studies on species in the orders Actiniaria (Hexacorallia), Scleractinia (Hexacorallia), and Alcyonacea (Octocorallia). This indicates that the other remaining orders of the group have been comparatively neglected with regards to their feeding aspects. Therefore, as data on feeding in some groups of Anthozoa are scarce, studies need to be carried out to fill the gaps that permeate this important benthic group, in order to better understand their ecology.

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“…En su papel como predadores en las comunidades bentónicas Schwartz et al (1983) señalan a los crustáceos del plancton como sus presas principales, así como a los gusanos oligoquetos. Deserti et al (2017) recogen la presencia de un amplio espectro de micro-invertebrados, hongos y microalgas en la cavidad gastrovascular de H. vulgaris. El ataque de H. oligactis sobre un oligoqueto se muestra en la Fig.…”

Section: Discussionunclassified

Observaciones ecológicas, corológicas y taxonómicas de hídridos dulceacuícolas (Cnidaria, Hydrozoa: Hydridae) en la Cuenca del Duero

2018

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Se describe la presencia de cuatro taxones de hidras de agua dulce (Cnidaria, Hydrozoa: Hydridae) en zonas someras epicontinentales de la cuenca del Duero (NO de España). En la subcuenca del Tera se encontraron individuos aislados sobre macrófitos sumergidos de tres taxones: Hydra vulgaris Pallas, 1766, Hydra (Pelmatohydra) oligactis Pallas, 1766 e Hydra (Chlorohydra) viridissima Pallas, 1766, y además en el Carrión grupos coloniales sobre bloques de cuarcita de la forma H. vulgaris var. aurantiaca Ehrenberg, 1838. En todos los casos se corresponde con ecosistemas de media montaña de aguas frías, transparentes y oligotróficas, de pH ligeramente ácido y con escasa mineralización. Todas las especies fueron localizadas en simpatría estricta, aunque en el lago de Sanabria se pudo citar tres taxones en diferentes hábitats. Se documenta la predación en cautividad de H. oligactis sobre gusanos oligoquetos y los periodos de formación de pólipos por gemación.

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Trophic ecology and diet of Hydra vulgaris (Cnidaria; Hydrozoa)

Cited by 13 publications

References 31 publications

The evolutionary history of mariner elements in stalk-eyed flies reveals the horizontal transfer of transposons from insects into the genome of the cnidarian Hydra vulgaris

The evolutionary history of mariner elements in stalk-eyed flies reveals the horizontal transfer of transposons from insects into the genome of the cnidarian Hydra vulgaris

Diversity of Feeding in Anthozoa (Cnidaria): A Systematic Review

Observaciones ecológicas, corológicas y taxonómicas de hídridos dulceacuícolas (Cnidaria, Hydrozoa: Hydridae) en la Cuenca del Duero

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