On the feeding of Branchiostoma senegalense (Acrania: Branchiostomidae)

Gosselck, Fritz; Kell, V.; Spittler, P.

doi:10.1007/bf00391534

Cited by 9 publications

(6 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Spencer & Herskovic (1968) reported that after incubation of amphioxus in 10 −5 M beta-alanine-1-14 C, radioactivity was detected in the exterior surface of amphioxus, with some radioactivity in the gut. Gosselck et al (1978) also reported that amphioxus took up dissolved organic carbon through the epithelium.…”

Section: Waterborne Uptake Of CD and Znmentioning

confidence: 95%

Importance of waterborne cadmium and zinc accumulation in the suspension-feeding amphioxus Branchiostoma belcheri

Lü¹,

Cai²,

Wang³

2012

Aquat. Biol.

View full text Add to dashboard Cite

The amphioxus is often used as a model marine animal in biological research because of its special position in evolution. These animals have transparent surfaces and nonrespiratory gills, and whether such specialization plays a role in the accumulation of metals remains unknown. In the present study, we determined the biokinetics of Cd and Zn in the amphioxus Branchiostoma belcheri, including metal assimilation efficiency (AE), the dissolved Cd and Zn uptake rate constants, and the efflux rate constant. Metal AEs were 7.6 to 34.3% for Cd and 8.4 to 42.9% for Zn in amphioxus feeding on 5 different algae, and the AEs of Zn were significantly influenced by the algal con centration. The dissolved uptake rate constants were 0.107 l g Overall, these determined bio kinetics were comparable to those found in other suspension feeders, such as marine bivalves. However, amphioxus had a higher absorption efficiency from the dissolved phase than those found for marine bivalves, largely caused by the unique surface sorption of metals. Such unique surface uptake contributed to the dominance of waterborne Cd accumulation in amphioxus under most environmental conditions. For Zn, dietary exposure appeared to be more important than aqueous uptake due to its relatively high particle reactivity. The predicted trophic transfer factors of Cd and Zn were <1 under most conditions.

show abstract

Section: Waterborne Uptake Of CD and Znmentioning

confidence: 95%

Importance of waterborne cadmium and zinc accumulation in the suspension-feeding amphioxus Branchiostoma belcheri

Lü¹,

Cai²,

Wang³

2012

Aquat. Biol.

View full text Add to dashboard Cite

show abstract

“…B. lanceolatum, B. senegalense, B. floridae ) and the results are quite similar regardless of the species. The size ranges from 0.062 to 100 µm, although in B. senegalense particles up to 300 µm were found ( Gosselck et al, 1978 ; Ruppert et al, 2000 ; Riisgard and Svane, 1999 ). This particle size suggests that the amphioxus diet includes microbes as well as phytoplankton, even if, in addition to phytoplankton, crustaceans have also been found in the gut contents of B. senegalense and B. lanceolatum larvae ( Gosselck and Kuehner, 1973 ; Webb, 1969 ).…”

Section: Habitat and Lifestylementioning

confidence: 99%

Amphioxus as a model to study the evolution of development in chordates

D'Aniello,

Bertrand,

Escriva

2023

eLife

View full text Add to dashboard Cite

Cephalochordates and tunicates represent the only two groups of invertebrate chordates, and extant cephalochordates – commonly known as amphioxus or lancelets – are considered the best proxy for the chordate ancestor, from which they split around 520 million years ago. Amphioxus has been an important organism in the fields of zoology and embryology since the 18th century, and the morphological and genomic simplicity of cephalochordates (compared to vertebrates) makes amphioxus an attractive model for studying chordate biology at the cellular and molecular levels. Here we describe the life cycle of amphioxus, and discuss the natural histories and habitats of the different species of amphioxus. We also describe their use as laboratory animal models, and discuss the techniques that have been developed to study different aspects of amphioxus.

show abstract

“…Subsequently, Gosselck et al (1978) examined the gut contents of Branchiostoma senegalense after feeding in the wild, and after a mixed diet in the laboratory which included submicron activated carbon particles. They concluded that the upper limit for ingestion was 300 μm, and that bacteria (approximately the same size as the carbon particles), could be ingested.…”

Section: Introductionmentioning

confidence: 99%