Rotifers are microscopic aquatic animals of the phylum Rotifera. Rotifers can be found in many freshwater environments and in moist soil, where they inhabit the. Phylum Rotifera. 1. PHYLUM ROTIFERA Philodina; 2. PHYLUM ROTIFERA Rotifera- Latin word meaning “wheel-bearer” (rota =wheel. Tujuan Instruksional Khusus: Menjelaskan morfologi, anatomi, reproduksi dan daur hidup dan klasifikasi serta arti ekonomis dari jenis Filum Rotifera. ROTIFERA.

Author: Akinoshicage Zologor
Country: El Salvador
Language: English (Spanish)
Genre: Music
Published (Last): 3 January 2012
Pages: 476
PDF File Size: 5.18 Mb
ePub File Size: 7.84 Mb
ISBN: 743-8-99025-707-2
Downloads: 10032
Price: Free* [*Free Regsitration Required]
Uploader: Moogugami

Savannas are grasslands with scattered individual trees that do not form a closed canopy. The Cambridge Natural History. Other marine rotifers are mainly littoral, but have been found at depths of m and greater. Rotifers typically feed on protozoa, algae, bacteria, phytoplankton, nannoplankton, and detritus or other organic matter.

Brusca and Brusca, ; Wallace, Filum rotifera can be cold or warm and daily temperates typically fluctuate. Plant diversity is typically low and the growing season is short. When present, males are short-lived and have a greatly reduced gut. In sedentary species, pedal gland secretions cement the rotifer in place. When they are present, male rotifers tend to be much smaller, shorter lived, and less complex than females.

The polyps live only on the reef surface. It is the second largest ocean in the world after the Pacific Ocean. In other words, India and southeast Asia. If conditions are unfavorable, mictic ova with thick shells are more likely to be produced.


Rotifers may be sessile or sedentary and some species are colonial. Yolked eggs pass through an oviduct to the cloaca. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Fire and grazing are important in the long-term maintenance of grasslands. Depending on environmental conditions, eggs may be mictic or amictic.

Phylogenetic relationships among Syndermata inferred from nuclear and mitochondrial gene sequences. Found on all continents except maybe Antarctica and in all biogeographic provinces; or in all the major oceans Atlantic, Indian, and Pacific.


These ova undergo a period of diapause and do not hatch until conditions are more favorable. Found on all continents except maybe Antarctica and in all biogeographic provinces; or rotifra all the major oceans Atlantic, Indian, and Pacific.

Depending on the species, they filter feed or actively hunt and capture prey. Waste, gases and nutrients are all diffused directly to the exterior environment through organ tissues and blastocoelomic fluid.

Atlantic Ocean the filym of water between Africa, Europe, the southern ocean above 60 degrees south latitudeand the western hemisphere. In South America it includes the scrub ecotone between forest and paramo. Once eggs are fertilized, they develop a multi-layered membranous shell and are either attached to substrate, or carried externally or internally by the female.



Referring to an animal that lives on or near the bottom of a body of water. Within the body are the flum and reproductive organs.

Some rotifers feed by trapping prey; these have a funnel-shaped corona lined with long immotile bristles or spines rather than cilia. When sucking decreases as the young begins rorifera eat other food and to leave the pouch, or if the young is lost from the pouch, the quiescent blastocyst resumes development, the embryo is born, and the cycle begins again. The area of the head anterior to this ring is known as the apical field.

Referring to something living or located adjacent to a waterbody usually, but not always, a river or stream. The anterior portion of the digestive system consists of the corona, a muscular pharynx mastaxand trophi chitinous jaws. Vegetation is typically sparse, though spectacular blooms may occur following rain.

Rotifers are considered broadly cosmopolitan, and are found in marine, brackish, and fresh waters throughout the world, excluding Antarctic. In dune areas gotifera is also sparse filum rotifera conditions are dry. Phylum Rotifera is comprised of two classes, Eurotatoria which includes orders Monogononta and Bdelloidea and Seisonideawith over 2, currently known species.