The distribution of epizoites on the hydroid <i>Nemertesia antennina</i> (L.)

Hughes, R. G.

doi:10.1017/s0025315400015940

Cited by 52 publications

(50 citation statements)

References 26 publications

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“…Unprompted carnivory was only witnessed in E. punctatus which was once seen to attack and eat prey that happened to be passing the tube entrance. Similar behaviour was also noted for this species by Hughes (1975).…”

Section: Discussion (A) Tubes and Their Utilization By Corophioid Ampsupporting

confidence: 88%

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A comparative study on the tubes and feeding behaviour of eight species of corophioid Amphipoda and their bearing on phylogenetic relationships within the Corophioidea

Dixon¹,

Moore²

1997

Phil. Trans. R. Soc. Lond. B

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SUMMARYObservations are presented on mouthpart functional morphology, and on feeding, grooming and defaecatory behaviour of eight species of corophioid Amphipoda, viz. orophium bonnellii, Lembos ebsteri, Aora gracilis, A. spinicornis, Gammaropsis nitida, Ericthonius punctatus, assa falcata and . marmorata. These data are considered in relation to tube structure and amphipod posture in relation to the tube. All these species occupy double-ended cylindrical tubes made from ' amphipod silk ' secreted by the third and fourth peraeopods, incorporating sediment and other debris to varying degrees. Uniquely among this set of species, however, E. punctatus has a tube that is architecturally distinct. It tapers along its length and has a distinctive oblique main entrance at its widest end. This end is used preferentially. The other species studied use either opening with equal facility. Such a feature is adaptive in facilitating deployment of the antennae and shielding the head of E. punctatus.Two groupings of species are proposed : group A which feed inside their tube using pleopod-induced through-tube currents, and group B which feed outside or at the entrance to their tube using external water currents. Group A includes . bonnellii, L. ebsteri and the Aora spp. Group B includes E. punctatus and the assa spp. Gammaropsis nitida exhibits traits from both groups, adding weight to its perceived status as a genus representative of the stem corophioid. The ischyrocerid habit of externalizing food-gathering may be regarded as the first step along an evolutionary line leading to the rod-building podocerid types and ultimately towards the caprellids. All species examined show a degree of flexibility in their feeding habits which helps to explain the success of this taxon, which has radiated into a great diversity of aquatic biotopes.

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Section: Discussion (A) Tubes and Their Utilization By Corophioid Ampsupporting

confidence: 88%

“…bonnellii ; Lakshmana Rao & Shyamasundari (1963) on . triaenon x ; Hughes (1975) on . sextonae ; Anger (1979 a) on .…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the tubes and feeding behaviour of eight species of corophioid Amphipoda and their bearing on phylogenetic relationships within the Corophioidea

Dixon¹,

Moore²

1997

Phil. Trans. R. Soc. Lond. B

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“…In general, deposit feeders are found in low-shear, depositional environments (Sanders 1958;Hessler and Jumars 1974;Hughes 1975). In the present study, deposit feeders were expected to dominate in zones of relatively slower current and higher deposition on the manganese nodules.…”

Section: Discussionmentioning

confidence: 99%

Vertical distributions of the epifauna on manganese nodules: Implications for settlement and feeding

Mullineaux

1989

Limnology & Oceanography

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Over 65% of the sessile organisms living on manganese nodules from the tropical North Pacific belong to taxa whose abundances are related to vertical position on the nodule. The nodule surface texture and boundary layer flow environment, two factors that also vary vertically, were investigated to determine whether they could account for the observed faunal distributions. The surface texture of nodules from the tropical Pacific is generally rough and knobby at the nodule base and smooth near the summit. Twenty-five taxa, including 68% of the total individuals, were found in significantly different abundances between the rough and smooth surfaces of 34 nodules. These distributions may be due to larval responses to surface texture and can account for much of the observed vertical zonation of the fauna. Boundary layer flows over nodules were characterized from laboratory flume studies and field observations. In flows at the field site, it is expected that mean boundary shear stress and horizontal flux of particles (food or larvae) will increase from the nodule base to the summit, while particle contact rate and deposition will decrease. The observations that suspension feeders persist near the nodule summit and deposit feeders concentrate near the base suggest that vertical distributions of some taxa may be determined by adult feeding requirements. Individuals of most taxa are relatively scarce at the nodule base, indicating that their larvae are not colonizing where they accumulate passively. High abundances of matlike agglutinated foraminifers (of unknown feeding type) at the nodule summit may be due to larval responses to the relatively'higher shear stresses. --

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“…Few studies focus on the phenomenon of either vagile or sessile epizoism on hydroids (Millard 1973;Hughes 1975;Orlov 1997;Bavestrello et al 1996). Hydroid-hydroid associations are most often noted only briefly in taxonomic and/or ecological studies (e.g., Schuchert 2001;Genzano and Rodriguez 1998;Zamponi et al 1998;Henry et al 2008;Genzano et al 2009).…”

Section: Hydroids As Substratementioning

confidence: 99%

“…Hydroid-hydroid associations are most often noted only briefly in taxonomic and/or ecological studies (e.g., Schuchert 2001;Genzano and Rodriguez 1998;Zamponi et al 1998;Henry et al 2008;Genzano et al 2009). Large colonies of hydroids are known to offer refuge and food supply for deposit feeders and carnivores (Hughes 1975). As substrates, hydroids can increase both the diversity and the abundance of benthic fauna in coastal waters (Bradshaw et al 2003), and they constitute the major substrate for epizoic hydrozoan fauna, for example, on the Argentinian continental shelf (Genzano and Zamponi 2003).…”

Section: Hydroids As Substratementioning

confidence: 99%

Hydroid epifaunal communities in Arctic coastal waters (Svalbard): effects of substrate characteristics

2013

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The knowledge of cryptic epifaunal groups in the Arctic is far from complete mostly due to logistic difficulties. Only recently, advances in sample collection using SCUBA diving techniques have enabled to explore delicate hydroid fauna from shallow waters. This study is the first attempt to examine the relationship between substrate property (such as size of rock, morphological characteristics of algal or bryozoan host) and hydroid community composition and diversity in the Arctic. Samples of substrates for hydroid attachment including rocks, algae, bryozoans and other hydrozoans were collected around the Svalbard. Examination revealed no substratespecific species. The substrate property did not have a strong influence on hydroid community. Both species composition and richness were not related to colonized rock surface area and to morphological characteristic of algal host. Therefore, results indicate the opportunistic nature of hydroid fauna in terms of substrate preference. However, the presence or absence of hydroids depended on the surface area of rocky substrate. Hydroids were more often present on rocks of larger surface area. Erect hydroids and bryozoans were important attachment surface for stolonal hydroids.

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The distribution of epizoites on the hydroid Nemertesia antennina (L.)

Cited by 52 publications

References 26 publications

A comparative study on the tubes and feeding behaviour of eight species of corophioid Amphipoda and their bearing on phylogenetic relationships within the Corophioidea

A comparative study on the tubes and feeding behaviour of eight species of corophioid Amphipoda and their bearing on phylogenetic relationships within the Corophioidea

Vertical distributions of the epifauna on manganese nodules: Implications for settlement and feeding

Hydroid epifaunal communities in Arctic coastal waters (Svalbard): effects of substrate characteristics

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