Diapause, quiescence, hatching requirements: what we can learn from large freshwater branchiopods
(Crustacea: Branchiopoda: Anostraca, Notostraca, Conchostraca).
Multispecies coexistence of branchiopods
(Anostraca, Notostraca & Spinicaudata) in temporary ponds of Chaouia plain (western Morocco): sympatry or syntopy between usually allopatric species.
And I realized that this brain actually comprises three successive neuropils in the optic regions, which is a trait of malacostracans, not branchiopods
," he said.
The study authors argue that the fossil supports the belief that branchiopod
brains evolved from complex organisms into simpler ones.
All the shrimp-like branchiopods
feed themselves by filtering algae and detritus out of the water.
Denton Belk graciously identified all the large branchiopod
specimens from my field work and provided guidance and technical information during the preparation of this work.
The new information generated by the upgraded analysis of cladocerans, which includes examination of all thoracic limbs and not only the general appearance of the valves and the postabdomen, has yielded evidence to weaken the idea of cosmopolitanism in anomopod branchiopods
(Frey 1980, 1988, Ciros & Elias-Gutierrez 1997).
Co-occurrence of branchiopods
in ephemeral pools is not unusual.
dominated by Cyclestheria hislopi (Baird, 1859), Leydigiopsis curvirostris Sars, 1901, Alona ossiani Sinev, 1998 in main water (S1A).
The mechanics of swimming in ostracodes has received relatively little attention compared with that of other aquatic microcrustaceans such as copepods (Buskey, 1998; Lenz and Hartline, 1999; Titelman, 2001; Buskey et al., 2002), isopods (Alexander, 1988; Hessler, 1993), branchiopods
(Williams, 1994), and cladocerans (Zaret and Kerfoot, 1980; Kirk, 1985; Lagergren et al., 1997).
The zooplankton of the tundra waters (here taken to include all the heterotrophic organisms that live in lakes and pools in the tundra, whether in suspension or fixed to the substrate) is highly varied and includes representatives of the same taxonomic groups as the waters of temperate areas; protoctists, rotifers, and some groups of crustaceans, such as filter-feeding branchiopods
(fairy shrimps and water fleas), peracarids, and copepods.
We have also obtained partial sequences of phenoloxidases from the branchiopods
Triops longicaudatus and Artemia franciscana, crustaceans that synthesize extracellular hemoglobin for oxygen transport.
The heartbeat of branchiopods
, one of the lower orders within the Crustacea, is said to be myogenic (reviewed by Krijgsman, 1952; Maynard, 1960).
are primitive crustaceans that are often prominent in ephemeral systems (Hessler et al., 1982).
4B); and cirripeds, branchiopods
, and malacostracans represent a more advanced stage, with the triads restricted to the periphery of the myofibrils (Fig.