Clock Worm

Product Information

Clark S (1987) Long term biological rhythmicity and reproduction: an experimental study of Harmothoe imbicata (L.) (Polychaeta: Polynoidae). Ph.D. thesis, University of Newcastle, Newcastle upon Tyne It’s evening at the northern tip of the Red Sea, in the Gulf of Aqaba, and Tom Shlesinger readies to take a dive. During the day, the seafloor is full of life and color; at night it looks much more alien. Shlesinger is waiting for a phenomenon that occurs once a year for a plethora of coral species, often several nights after the full moon.

Bollens SM, Frost BW, Thoreson DS, Watts SJ (1992) Diel vertical migration in zooplankton: field evidence in support of the predator avoidance hypothesis. Hydrobiologia 234:33–39 If the boiler timer isn’t working correctly, you could be experiencing a range of problems, such as:

What to Do If Your Boiler Timer Still Isn’t Working

In a separate study, the researchers used cameras in the lab to record the burst of swimming activity (the worm’s “nuptial dance”) that occurs when a worm sets out to spawn, and followed it up with genetic experiments. And they confirmed that another molecule is key for the worm to spawn during the right one- to two-hour window — the dark portion of that night between sunset and moonrise — on the designated spawning nights. However, this is actually the temperature of the water going through the radiators , not the temperature of the room itself. It was an easy fix of turning the control knob to the radiators to 65 -70 degrees . 5. Call a professional Riisgard HU, Vedel A, Boye H, Larsen PS (1992) Filter-net structure and pumping activity in the polychaete Nereis diversicolor: effects of temperature and pump modeling. Mar Ecol Prog Ser 83:79–89

Olive PJW (1980) Control of the reproductive cycle in female Eulalia viridis (Polychaeta: Phyllodocidae). J Mar Biol Assoc UK 61:941–958 Last KS, Bailhache T, Kramer C, Kyriacou CP, Rosato E, Olive PJ (2009) Tidal, daily, and lunar-day activity cycles in the marine polychaete Nereis virens. Chronobiol Int 26:167–183 Garwood PR, Olive PJW (1982) The influence of photoperiod on oocyte growth and its role in the control of the reproductive cycle of the polychaete Harmothoe imbricata (L.). Int J Invertebr Reprod 5:161–165 Another potential problem is the location of the thermostat. If it’s too close to a heat source (radiator), it will think the room is hotter than it is and turn the boiler off. Garwood PR (1981) Observations on the cytology of the developing female germ-cell in the polychaete Harmothoe imbricata (L). Int J Invertebr Reprod 3:333–345

Your Boiler Timer Should Work Like This

Based on his underwater observations to date, Shlesinger believes that about 10 of the 50-odd species he has looked at may be asynchronizing in the Red Sea, the northern portion of which is considered a climate-change refuge for corals and has not experienced mass bleaching events. “I suspect,” he says, “that we will hear of more issues like that in other places in the world, and in more species.”