No common name

Temnocephala chilensis

ORDER

Rhabdocoela

FAMILY

Temnocephalidae

TAXONOMY

Temnocephala chilensis (Moquin-Tandon, 1846), Santiago, Chile.

OTHER COMMON NAMES

None known.

PHYSICAL CHARACTERISTICS

Body ovoid, extensible with five anterior prehensile tentacles, posterior attachment disc present, body color is uniform orange-brown; epidermis composed of four syncytial plates, epidermal cilia are absent; eyespots with distinctive red pigment; gonopore is mid-ventral in posterior third of body, two testes occur on each side in posterior of body, cirrus on left side; ovary lies on right side at level of genital pore, vitellaria are extensive.

DISTRIBUTION

Follows distribution of its hosts in Chile and Argentina.

HABITAT

Ectosymbiotes of freshwater decapod and isopod crustaceans. Some live on gills, while others occur on carapace and limbs. It associates with species of the anomuran crabs of genus Aegla and species of the crayfish Samastacus.

BEHAVIOR

Can move in leech-like movement using posterior disc and tentacles.

FEEDING ECOLOGY AND DIET

Uses its prehensile tentacles to capture free-living and co-symbiotic invertebrates of suitable size such as protozoans, rotifers, oligochaetes, insect larvae, copepods, or ostrcods.

REPRODUCTIVE BIOLOGY

After mating, it attaches eggs to exoskeleton of host. After eggs are deposited, detritus tends to collect around eggs, which at-

tracts protozoans and other organisms that provide food for newly hatched worms. Development is direct without larval stage.

CONSERVATION STATUS

Not threatened.

SIGNIFICANCE TO HUMANS None known. ♦

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

Get My Free Ebook


Post a comment