hydroid

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hydroid

a member of the COELENTERATE class Hydrozoa. Most are colonial forms which grow in the marine environment on rocks and seaweeds, such as Obelia. Usually, there is an ALTERNATION OF GENERATIONS (not in HYDRA) in which the MEDUSA (free-swimming) stage carries the sex organs. The sedentary, nonsexual stage of this life cycle is itself referred to as the POLYP or (less commonly) hydroid stage.

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Amiloride appeared to be weakly inductive to larvae of the hydroid Hydractinia echinata: a 600 [micro]mol [l.

Transcriptomic Basis of Metamorphic Competence in the Salt-Marsh-Dwelling Polychaete Capitella teleta

Studies on southwestern Atlantic intertidal hydroid communities are rare, but include distributional inferences for the Brazilian tropical-subtropical coast (Rosso & Marques, 1997), and ecological assessments of seasonal richness, abundance, zonation and substrata for southern temperate waters (Genzano, 1994; Genzano & Rodriguez, 1998).

Faunal assemblages of intertidal hydroids (Hydrozoa, Cnidaria) from Argentinean Patagonia (Southwestern Atlantic Ocean)

Doto form A is the most common Doto in the southern California bight and is commonly observed subtidally on campanularid hydroids growing on kelp and other macroalgae.

Nudibranch range shifts associated with the 2014 warm anomaly in the Northeast Pacific

Clearly, the hydroid habitat offers a form of shelter and protection from abrasion and grazers.

The Boulder Patch (North Alaska, Beaufort Sea) and its benthic algal flora

Kongsberg's REMUS family of AUVs built by its subsidiary Hydroid can also perform visual pipeline inspections and pipeline surveys when equipped with high-frequency sidescan sonar, a multi-beam and camera.

Record-setting AUV pipeline inspection in Norway. (Tech Notes: Product Development)

The Norwegian company entered the contract via its subsidiary Hydroid Inc, USA.

-Kongsberg Gruppen lands USD8.4m weapons order in USA

The bottle brush hydroid occurs in these chalk reefs.

Our blue planet; sponsored by Environment Agency NATURAL ENGLAND

In January 2002, various species of algae, sponge, hydroid and tunicate colonies were scraped from the south jetty during an extremely low tide.

A new distribution record and notes on the biology of the brittle star Ophiactis simplex (Echinodermata: Ophiuroidea) in Texas

In the summer and fall, the shallow, well-lit portion of the jetty is dominated by brown seaweeds like Sargassum, Padina, and Dictyota, whereas the deeper portions are dominated by colonial invertebrates, including the scleractinian coral Oculina arbuscula, the upright bryozoan Bugula neritina, the hydroid Eudendrium carneum, several species of tunicates, and a few sponges.

MUTUALISM AND CORAL PERSISTENCE: THE ROLE OF HERBIVORE RESISTANCE TO ALGAL CHEMICAL DEFENSE

Katrina was searching the tidepools for a hydroid that she had discovered several years ago: Samuraia tabuarasa.

Songs of the Seri

Evolutionary genetics of allorecognition in the colonial hydroid Hydractinia symbiolongicarpus.

Evolution of allorecognition in botryllid ascidians inferred from a molecular phylogeny

This dichotomy between the palatability of larval and adult extracts was not apparent for the hydroid Eudendrium or the sponges Calyx or Ectyoplasia, for which extracts from both adults and larvae strongly deterred feeding (P [less than] 0.