A review of Caribbean Copepoda associated with reef-dwelling cnidarians, echinoderms and sponges

Korzhavina, Oksana A.; Hoeksema, Bert W.; Ivanenko, Viatcheslav N.

doi:10.1163/18759866-20191411

Cited by 15 publications

(17 citation statements)

References 78 publications

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“…Overall, a certain degree of host specificity can be detected, mostly at the family level, even if with some exceptions. Host specificity has recently been demonstrated for several other coral‐reef invertebrates associated with a variety of benthic organisms, such as parasitic gastropods (Gittenberger and Gittenberger, 2011; Gittenberger and Hoeksema, 2013; Potkamp et al., 2017; Fritts‐Penniman et al., 2020), coral‐dwelling barnacles (Malay and Michonneau, 2014; Tsang et al., 2014), commensal shrimps (Horká et al., 2016), copepods (Korzhavina et al., 2019), benthic ctenophores (Alamaru et al., 2017), coral gall‐crabs (García‐Hernández et al., 2020), acoel flatworms (Kunihiro et al., 2019), and hydrozoans (Maggioni et al., 2020b, c). Host‐specificity of associated species can be very weak as observed in various coral‐dwelling copepods living on mushroom corals (Ivanenko et al., 2018) and in one serpulid worm living on a wide range of Caribbean scleractinians (Hoeksema and Hove, 2017).…”

Section: Discussionmentioning

confidence: 99%

Diversity, host specificity and biogeography in the Cladocorynidae (Hydrozoa, Capitata), with description of a new genus

et al. 2021

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The hydrozoan family Cladocorynidae inhabits tropical to temperate waters and comprises the two genera Pteroclava and Cladocoryne. Pteroclava lives in association with some octocorals and hydrozoans, whereas Cladocoryne is more generalist in terms of substrate choice. This work provides a thorough morpho-molecular reassessment of the Cladocorynidae by presenting the first well-supported phylogeny of the family based on the analyses of three mitochondrial and four nuclear markers. Notably, the two nominal genera were confirmed to be monophyletic and both morphological and genetic data led to the formal description of a new genus exclusively associated with octocorals, Pseudozanclea gen. nov. Maggioni & Montano. Accordingly, the diagnosis of the family was updated. The ancestral state reconstruction of selected characters revealed that the symbiosis with octocorals likely appeared in the most recent common ancestor of Pteroclava and Pseudozanclea. Additionally, the presence of euryteles aggregation in the polyp stage and the exumbrellar nematocyst pouches with euryteles represent synapomorphies of all cladocorynid taxa and probably emerged in their most recent common ancestor. The analysis of several Pteroclava krempfi colonies from Indo-Pacific and Caribbean localities associated with several host octocorals revealed a high intra-specific genetic variability. Single-and multi-locus species delimitations resulted in three to five species hypotheses, but the statistical analysis of morphometric data showed only limited distinction among the clades of P. krempfi. However, P. krempfi clades showed differences in both host specificity, mostly at the octocoral family level, and geographic distribution, with one clade found exclusively in the Caribbean Sea and the others found in the Indo-Pacific.

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Section: Discussionmentioning

confidence: 99%

Diversity, host specificity and biogeography in the Cladocorynidae (Hydrozoa, Capitata), with description of a new genus

et al. 2021

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“…Opecarcinus hypostegus was previously reported from 60 m depth in association with A. lamarcki (van der Meij et al 2015a). If mesophotic zones are potential refugia for coral reef fauna (Rooney et al 2010;Slattery et al 2011;Semmler et al 2017;Baldwin et al 2018), future surveys of mesophotic reefs should not only focus on the occurrence of deep-living corals but also on the occurrence of other coral-associated organisms (Hoeksema et al 2017c;Veglia et al 2018;Korzhavina et al 2019).…”

Section: Discussionmentioning

confidence: 99%

The scleractinian Agaricia undata as a new host for the coral-gall crab Opecarcinus hypostegus at Bonaire, southern Caribbean

García-Hernández

Gier

Moorsel³

et al. 2020

Symbiosis

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The Caribbean scleractinian reef coral Agaricia undata (Agariciidae) is recorded for the first time as a host of the coral-gall crab Opecarcinus hypostegus (Cryptochiridae). The identity of the crab was confirmed with the help of DNA barcoding. The association has been documented with photographs taken in situ at 25 m depth and in the laboratory. The predominantly mesophotic depth range of the host species suggests this association to be present also at greater depths. With this record, all seven Agaricia species are now listed as gall-crab hosts, together with the agariciid Helioseris cucullata. Within the phylogeny of Agariciidae, Helioseris is not closely related to Agaricia. Therefore, the association between Caribbean agariciids and their gallcrab symbionts may either have originated early in their shared evolutionary history or later as a result of host range expansion. New information on coral-associated fauna, such as what is presented here, leads to a better insight on the diversity, evolution, and ecology of coral reef biota, particularly in the Caribbean, where cryptochirids have rarely been studied.

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“…The majority of Hemicyclops spp. has a symbiotic (commensal, parasitic) lifestyle and occurs on the body surface or in burrows of benthic invertebrates in the intertidal and subtidal zone all over the world except for polar regions (Humes, 1984;Itoh and Nishida, 2008;Korzhavina et al, 2019).…”

Section: Mesozooplankton Dynamicsmentioning

confidence: 99%

Zooplankton community succession and trophic links during a mesocosm experiment in the coastal upwelling off Callao Bay (Peru)

Dejo

Arteaga

Schukat

et al. 2022

Preprint

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Abstract. The Humboldt Current Upwelling System (HUS) is the most productive eastern boundary upwelling system (EBU) in terms of fisheries yield on the planet. EBUs are considered hotspots of climate change with predicted expansion of mesopelagic oxygen minimum zones (OMZs) and related changes in frequency and intensity of upwelling of nutrient-rich/oxygen-low deep-water. To increase our mechanistic understanding of how upwelling impacts on plankton communities and trophic links, we investigated mesozooplankton community succession as well as gut fluorescence, fatty acid and elemental compositions (C, N, O, P), and stable isotope (δ13C, δ15N) ratios of dominant meso- and microzooplankton representatives in a mesocosm setup off Callao (Peru) after simulated upwelling with OMZ water from two different locations and N:P signatures. An oxycline between 5 and 15 m with hypoxic conditions below ~10 m (<50 μL-1) persisted in the mesocosms throughout the experiment. No treatment effects became apparent in the mesozooplankton community composition, but differences in nutrient concentrations established through OMZ water additions were negligible. Copepods and polychaete larvae dominated in terms of abundance and biomass. Development and reproduction of the dominant copepod genera Paracalanus spp., Hemicyclops sp., Acartia sp., and Oncaea sp. was hindered as evident from accumulation of adult copepodids but largely missing nauplii. Failed hatching of nauplii in the hypoxic bottom layer of the mesocosms and poor nutritional condition of copepods suggested from very low gut fluorescence and fatty acid compositions most likely explains the retarded copepod development. Correlation analysis revealed no particular trophic relations between dominant copepods and phytoplankton groups. Possibly particulate organic matter with relatively high C:N ratio was a major diet of copepods. C:N ratios of copepods (pooled and species-specific for Paracalanus spp., Hemicyclops sp.) and polychaetes ranged between 4.8–5.8 and 4.2–4.3, respectively. Stable isotope signatures of copepods varied over time but not between treatments. δ15N was comparatively high (~13–17 ‰) potentially because the injected OMZ source water was enriched in δ15N as a result of anoxic conditions. Elemental ratios of dinoflagellates deviated strongly from the Redfield ratio. We conclude, that intensification and increased frequency of upwelling and expanding/shoaling OMZs could severely impact population dynamics and reproductive success of zooplankton communities and, thus, the pelagic food web of the HUS.

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A review of Caribbean Copepoda associated with reef-dwelling cnidarians, echinoderms and sponges

Cited by 15 publications

References 78 publications

Diversity, host specificity and biogeography in the Cladocorynidae (Hydrozoa, Capitata), with description of a new genus

Diversity, host specificity and biogeography in the Cladocorynidae (Hydrozoa, Capitata), with description of a new genus

The scleractinian Agaricia undata as a new host for the coral-gall crab Opecarcinus hypostegus at Bonaire, southern Caribbean

Zooplankton community succession and trophic links during a mesocosm experiment in the coastal upwelling off Callao Bay (Peru)

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