Page 17 of 51
This article is part of a Supplement: Volume 52 Supplement 1
This is the first report on the leptocephalus catches made during the last 15 years in North-and Central Atlantic during the course of 19 cruises of five different ships from Germany and one from Poland. This ...
The age of glass eels arriving at the European coasts is estimated by different authors to range from 3/4 to 3+years; some of these estimates are based on counts of “daily rings”. The present study reviews pub...
In the western North Atlantic, some shrimps of the genusPericlimenes interact with fishes. Accoring to prevailing wisdom, these shrimps “clean” the fishes (i.e. they remove parasites, diseased tissue, or detritus...
Benthic samplings along the southern temperate coast of Australia yielded stenothoid specimens related to the taxonRaumahara Barnard. ?Raumahara virdurorum sp. n. is described, illustrated, and the systematic pos...
Xantharus renatehaassae sp. nov. is described from a female taken at mesopelagic depth of the Antarctic Sound. This is the second species within the genus to be described and the first record ofX...
In semi-adultSepia officinalis L. (Cephalopoda) from the Bay of Arcachon (France) a congenital malformation of the systemic heart is described by macro-and microscopical methods. It concerns an atypical doubling ...
The marine dinoflagellateGyrodinium undulans was discovered as a feeder on the planktonic diatomOdontella aurita. Every year, during winter and early spring, a certain percentage of cells of this bloom-forming di...
The present paper presents a collection and synthesis of data found in numerous publications on Adriatic Sea nematofauna, as well as unpublished, data mentioned in annotations. For this purpose, a chronologica...
The sea anemoneCereus pedunculatus was artificially UV-irradiated to test the effect of UV-light on the number of endosymbiotic dinoflagellates in its gastrodermis and on their ultrastructure. Anemones were kept ...
Coronate polyps are unique among cnidarians in having a complete peridermal tube, a ring canal, and four radial canals or pores at their oral region. Moreover, most of these species possess tooth whorls that n...
Larvae of an estuarine grapsid crabChasmagnathus granulata Dana 1851, from temperate and subtropical regions of South America, were reared in seawater (32/%.) at five different constant temperatures (12, 15, 18, ...
The density of five major groups of fouling organisms (bacteria, diatoms, choanoflagellates, ciliates, macroorganisms) on seven artificial substrata with surface tensions between 19.0 and 64.5 mN m−1 was studied ...
Bacterial and heterotrophic nanoflagellates (HNF) abundance, as well as bacterial production and chlorophylla levels, were measured at five sites extending from the coastal zone toward the open Adriatic in the pe...
In two laboratory experiments, the effects of temperature and food availability on the growth of 10- to 23-mm high specimens of the bivalveArctica islandica were estimated. Each experimental set-up consisted of 5...
Long-term changes in the macrofauna of the Pomeranian Bay were studied by comparing survey data from the 1950s, 1980s, and 1990s. The study area has undergone significant eutrophication during the period of in...
Consumption by carnivorous birds was estimated for the Sylt-Rømø tidal inlet in the northern part of the Wadden Sea, as well as the subarea Königshafen, a small, tidal bay. The bird community of the Sylt-Rømø ...
Predation by eiders, oystercatchers and herring gulls on natural mussel bedsMytilus edulis was studied in the Königshafen, a sheltered bay in the Wadden Sea. About 15 ha (2.5%) of the Königshafen were covered wit...
The epibenthic fauna dredged in the channels of the Wadden Sea of Schleswig-Holstein is dominated by crustaceans. Mean species richness is lower in a southern region (7.6±2.2 species haul−1) which is part of the ...
Knowledge on the distribution, abundance and species richness of intertidal macroalgae occurring on sandy and muddy flats of the German Wadden Sea is still incomplete. We summarize published and unpublished in...
Factors controlling seasonal variations in benthic metabolism (O2 flux) and dissolved inorganic nitrogen (DIN) fluxes were examined during a 12–14 month period at three intertidal Wadden Sea stations. Since the f...
The fecal pellets ofHeteromastus filiformis andHydrobia ulvae are abundant on the sediment surface of the Sylt-Rømø tidal flats. AlthoughCerastoderma edule is present in most parts of the study area, only small a...
During one tidal period, measurements of the variation of current velocities, suspended sediment concentration and settling velocities of the suspended matter were carried out on a tidal mud flat 1.8 km west o...
A budget for net accumulation of fine-grained sediment (<63 μm) has been set up for the Sylt-Rømø tidal basin. Net accumulation within the basin was computed from210Pb core dating and mapping of the intertidal an...
Optimum temperature and salinity conditions for viable hatch were studied for turbot (Scophthalmus maximus L.) from the North Sea. Temperatures ranging from 6 to 22°C and salinities from 5 to 35‰ were used. Optim...
The Mauritanian Province, which comprises the area from the NW-African shelf to about 20°W and from Cape Timiris to Cape Verde, is redefined on the basis of fish larvae distribution patterns, direct and indire...
Habitat choice by juvenile cod (Gadus morhua L.) on sandy bottoms with different vegetation types was studied in laboratory. The experiment was conducted day and night in flow-through tanks on two different size-...
Field surveys have shown a limited distribution ofL. branchialis in Baltic waters due to heterogenic salinity. The parasite is not suited as “natural” tagging of the cod population in these waters.
Predation by herring gullsLarus argentatus and oystercatchersHaematopus ostralegus was evaluated on a newly established musselMytilus edulis bed on tidal flats of the German Wadden Sea. The mussel bed covered an ...
This work is the first of a series in which the distribution patterns and the importance of the Tintinnina in the trophic chain of the North Sea are evaluated. In agreement with Foissner (1994), who stated “Mo...
Changes with time in aLithophaga lithophaga population, spatial distribution, size-frequency distribution and recruitment were studied. The population was homogenous, without statistically significant differences...
Spermatogenesis and sperm structure of the nemertine wormProcephalothrix sp. were studied by transmission electron microscopy. It is shown that a flagellum and proacrosomal vesicles are common in spermatogonia an...
The EuropeanMytilus galloprovincialis Lmk. andM. edulis L. coexist and hybridize in different proportions in extended areas of the British and Atlantic French coasts.M. galloprovincialis typical allozymes seem to...
The effects of formaldehyde preservation on biometrical characters, biomass and biochemical composition of the marine copepodAcartia clausi were studied using the relevant values of fresh unpreserved animals as r...
A combination of characters, not individually unique, possessed by the corystid,Corystes cassivelaunus, and the two cancrids,Platepistoma nanum andCancer pagurus, defines a corystoid-type of spermatozoon: the bas...
The horizontal and vertical distribution and the abundance of ostracods, hyperiids (amphipods) and euphausiids in the Greenland Sea along a transect parallel 74°45′N (from 15°45′E to 08°30′W) are described. Th...
Eleven species of the genusVemakylindrus Bacescu, 1961 are known at present. A hitherto unknown species is described herein asV. cantabricus, sp. nov., and is compared with the more closely related congeneric spe...
The present light microscopic lectin, histochemical study suggests for the first time that the vertebrate gonadotropin-like substance in the basal part of the epithelial cells of Hatschek's pit is a sialic aci...
The seasonal changes in the population structure of dab were observed in intervals of four to six weeks from January 1993 to November 1994 at a fixed station northwest of Helgoland. The sex distribution was ch...
In the late 1980s, recruitment failures of the musselMytilus edulis led to economic problems in the mussel fishing and cultivation industries of northwestern Europe. As part of a collaborative study to gain a bet...
Temporal changes in the zoobenthos of southwest Mecklenburg Bay were studied using routine survey data collected in 1980–94. Earlier studies suggested that long-term oxygen deficiency on the scale of several m...
In July 1993, the car carrier “Faust” entered Bremerhaven after a voyage from the North-American Atlantic coast to Europe. In a dockyard, five living specimens of the order Polycladida were collected from the ...
The complete larval development is described forPorcellana platycheles (Pennant) reared under laboratory conditions. The development consists of two zoeal stages and one megalopa. At 20°C and 35‰ salinity, the me...
During three cruises, carried out in March 1991, October 1991, and January 1992 off the Iberian Peninsula and Morocco, the abundant calanoid copepodCalanus helgolandicus (Claus) was collected from a depth of 1000...
A new benthic sled is described.Favourable features of the sled include: simple operation, broad runners, balanced towing position, simple height adjustment of the sediment cutting edge and quick exchange of t...
The sublittoral macrofauna of the Steingrund, a stony area east-northeast of Helgoland, was investigated from May till October 1991 using a van Veen grab and a small dredge. The diverse endo- and epifauna of t...
A redescription of the genusDelectona is provided, based on information gained by the finding of a new species,D. alboransis, from the Alboran Sea (southwestern Mediterranean Sea). Up to now, this genus contained...
Not applicable