Other less abundant groups (<1%) such as siphonophores, medusae, cladocerans, heteropods, appendicularians
and echinoderm larvae showed a negative correlation (-0.
Other notable groups include appendicularians and cladocerans which shows similar trends to these recorded in the zooplankton (Fig.
Other groups like appendicularians and cladocerans contributed strongly to the abundance of the zooplankton community.
The fate of discarded appendicularian
houses: degradation by the copepod, Microsetella norvegica, and other agents.
Early histological studies addressed notochord development to the larval stage in the appendicularians Oikopleura dioica and Oikopleura longicauda (Fol, 1872; Seeliger, 1893; Martini 1909).
The Brachyury (T) gene is essential for notochord development (Cunliffe and Ingham, 1999), and its expression pattern has been studied in both appendicularians (Oikopleura dioica--Bassham and Postlethwait.
2 to 6 [micro]m particles by the appendicularians Oikopleura dioica and Fritillaria borealis.
Here we test the hypothesis that age of a specific developmental stage in the urochordate appendicularian Oikopleura dioica Fol, 1872, can be predicted from the number of endostyle cells and temperature, thus serving as such a reference system.
The 1-2 mm TL size class was represented by copepods (Ctenocalanus vanus, Clausocalanus brevipes, Centropages brachiatus + Calanoida copepodites) and to a lesser extent by appendicularians.
Furthermore, unidentified fish eggs showed high index in the northern sector of the study area (north of 38[degrees]S) while the appendicularians were in the southern part (south of 38[degrees]S) (Fig.
Paffenhofer (1970) described a rotating culture apparatus used very successfully for copepods, appendicularians
, and doliolids, which has been modified to various degrees (e.
are one of the most abundant and frequent zooplankters in coastal tropical environments (Alldredge 1972, 1976, Sato et al.
Even though appendicularians
registered percentages lower than 10%, its numeric contribution has to be pointed out since they are rich in energetic content, although they are considered as accidental or accessory items (Fenaux 1985).
In 1834, Lister first investigated how food particles in the feeding current are trapped in the pharynx of appendicularians
During the sampling period the mesozoo-plankton community was characterized by the presence of different groups, such as copepods, chaetognaths, crustacean larvae, ostracods, cladocerans, icthyoplankton (fish larvae), molluscs, appendicularians
, echinoderms and brachiopods larvae (Table 1).