Biology and Ecology
The barbeled houndshark seems to be an active swimmer, based on its strong musculature, long tail, short trunk, and small liver. It feeds on a wide variety of bottom and shore-dwelling organisms. Crustaceans (including crabs, lobsters, and shrimp) are a favored prey item, while small bony fishes (including sardines, anchovies, snake eels, blennies, gobies, and flatfish), skate and flyingfish eggs, octopus, and sponges are also eaten; miscellaneous objects such as feathers, vegetable scraps, and flowers have also been recovered from its stomach. Known parasites of this species include the copepods Eudactylina leptochariae and Thamnocephalus cerebrinoxius.
The enlarged anterior teeth of male barbeled houndsharks may function in mating behaviors. This species is viviparous; once the embryos exhaust their supply of yolk, they are nourished through a placental connection formed from the depleted yolk sac. Unlike any other shark, the yolk-sac placenta is globular or spherical. Off Senegal, females bear litters of 7 pups around October, after a gestation period of at least four months. The largest fetuses on record measured 20 cm (7.9 in) long, which is presumably close to the birth size. Males reach sexual maturity at 55–60 cm (22–24 in) long, and females at 52–58 cm (20–23 in) long.
Read more about this topic: Barbeled Houndshark
Other articles related to "biology and ecology, ecology, biology, biology and":
... Eggs raised in captivity hatch in 5–6 months, while those in the wild may take up to 12 months to hatch, depending on temperature ... While inside the case, the embryos have a whip-like extension on the tail believed to be used for circulating water ...
... Rees (Ph.D.) – Ecologist, professor of ecology at the University of British Columbia, origininated the ecological footprint concept and co-developed the method Helen Rodd (M.Sc ...
... These are the main branches of biology Aerobiology – the study of airborne organic particles Agriculture – the study of producing crops from the land, with an emphasis ... of anatomy Ichthyology – the study of fish Integrative biology – the study of whole organisms Limnology – the study of inland waters Mammalogy – the study of mammals Marine biology (or ...
... Its average size is 30–70 cm ... The largest specimen in Slovenia was a 117 cm and 24 kg female (found dead), largest living specimen caught was 120 cm and 22.5 kg ...
... revolutionized the understanding of signal transduction Sara Shettleworth (professor of ecology, evolutionary biology and psychology) – Zoologist and psychologist, Guggenheim Fellow, American ...
Famous quotes containing the words biology and, ecology and/or biology:
“The “control of nature” is a phrase conceived in arrogance, born of the Neanderthal age of biology and the convenience of man.”
—Rachel Carson (1907–1964)
“... the fundamental principles of ecology govern our lives wherever we live, and ... we must wake up to this fact or be lost.”
—Karin Sheldon (b. c. 1945)
“The “control of nature” is a phrase conceived in arrogance, born of the Neanderthal age of biology and the convenience of man.”
—Rachel Carson (1907–1964)