Breeding Season
provided by Egg Characteristics and Breeding Season for Woods Hole Species
Woods Hole, Maine
- bibliographic citation
- Costello, D.P. and C. Henley (1971). Methods for obtaining and handling marine eggs and embryos. Marine Biological Laboratory, Woods Hole, MA (Second Edition)
- author
- Costello, D.P.
- author
- C. Henley
Cleavage
provided by Egg Characteristics and Breeding Season for Woods Hole Species
Woods Hole, Maine
- bibliographic citation
- Costello, D.P. and C. Henley (1971). Methods for obtaining and handling marine eggs and embryos. Marine Biological Laboratory, Woods Hole, MA (Second Edition)
- author
- Costello, D.P.
- author
- C. Henley
Living Material
provided by Egg Characteristics and Breeding Season for Woods Hole Species
Woods Hole, Maine
- bibliographic citation
- Costello, D.P. and C. Henley (1971). Methods for obtaining and handling marine eggs and embryos. Marine Biological Laboratory, Woods Hole, MA (Second Edition)
- author
- Costello, D.P.
- author
- C. Henley
Living Material
provided by Egg Characteristics and Breeding Season for Woods Hole Species
Woods Hole, Maine
- bibliographic citation
- Costello, D.P. and C. Henley (1971). Methods for obtaining and handling marine eggs and embryos. Marine Biological Laboratory, Woods Hole, MA (Second Edition)
- author
- Costello, D.P.
- author
- C. Henley
Rate of Development
provided by Egg Characteristics and Breeding Season for Woods Hole Species
Woods Hole, Maine
- bibliographic citation
- Costello, D.P. and C. Henley (1971). Methods for obtaining and handling marine eggs and embryos. Marine Biological Laboratory, Woods Hole, MA (Second Edition)
- author
- Costello, D.P.
- author
- C. Henley
The Unfertilized Ovum
provided by Egg Characteristics and Breeding Season for Woods Hole Species
Woods Hole, Maine
- bibliographic citation
- Costello, D.P. and C. Henley (1971). Methods for obtaining and handling marine eggs and embryos. Marine Biological Laboratory, Woods Hole, MA (Second Edition)
- author
- Costello, D.P.
- author
- C. Henley
Time Table of Development
provided by Egg Characteristics and Breeding Season for Woods Hole Species
Woods Hole, Maine
- Bumpus, H. C., 1898. The breeding of animals at Woods Holl during the month of May, 1898. Science, 8: 58-61.
- Mcintosh W. C., 1900 1923. A monograph of the British Annelids, Pt. Ii. Polychaeta. Dulau & Co., Ltd., London. (Eight volumes.).
- Sars, M., 1845. Zur Entwicklung der Anneliden. Arch. f. Naturgesch., 11 Jahrg., 1: 11-19.
- Thorson, G., 1946. Reproduction and larval development of Danish marine bottom invertebrates, with special reference to the planktonic larvae in the Sound (0resund). Medd. f. Komm. Danmarks Fiskeri. og Havunders., Ser. Plankton, 4: (Nr. 1) 1-523.
- bibliographic citation
- Costello, D.P. and C. Henley (1971). Methods for obtaining and handling marine eggs and embryos. Marine Biological Laboratory, Woods Hole, MA (Second Edition)
- author
- Costello, D.P.
- author
- C. Henley
Look Alikes
provided by Invertebrates of the Salish Sea
How to Distinguish from Similar Species: Several other species of Harmothoe have anterior eyes that are visible dorsally. Other Polynoids may have other numbers of elytra.
- license
- cc-by-nc-sa
- copyright
- Rosario Beach Marine Laboratory
Comprehensive Description
provided by Invertebrates of the Salish Sea
Biology/Natural History: This scaleworm is very common in some parts of its range, such as California and SE Alaska. It is an active swimmer and can live in a wide range of salinities. The species is a predator which lies in wait, then pounces on its prey, using its large, jawed proboscis to subdue them. Amphipods are common prey. It also eats some algae. The pink eggs are released from the nephridiopores. In some areas, females of this species brood their eggs under the elytra; in other places they do not seem to do so. Brooding in our area usually takes place in summer. Larvae may have a long pelagic period or direct development. Polychaetes this species may live commensally with include Thelepus crispus, Neoamphitrite robusta, and Diopatra ornata.
- license
- cc-by-nc-sa
- copyright
- Rosario Beach Marine Laboratory
Habitat
provided by Invertebrates of the Salish Sea
Lives in a wide variety of habitats: Freeliving intertidally under rocks and in eelgrass; subtidally in kelp holdfasts or mussel beds. May live commensally with echinoderms or other polychaetes.
- license
- cc-by-nc-sa
- copyright
- Rosario Beach Marine Laboratory
Distribution
provided by Invertebrates of the Salish Sea
Geographical Range: A very widely distributed species. Found throughout the northern hemisphere. Point Barrow, Alaska to s California on our coast.
- license
- cc-by-nc-sa
- copyright
- Rosario Beach Marine Laboratory
Habitat
provided by Invertebrates of the Salish Sea
Depth Range: Low intertidal to 3710 m
- license
- cc-by-nc-sa
- copyright
- Rosario Beach Marine Laboratory
Comprehensive Description
provided by Invertebrates of the Salish Sea
As with other members of Family Polynoidae, the dorsal side of this species is covered with a series of platelike elytra. Harmothoe imbricata has 15 pairs of elytra which cover nearly all the segments. The elytra have a light fringe of papillae around the edge. There is only one basic kind of notoseta and one kind of neuroseta on any given segment. Most of the neurosetae fork at the tip. The notosetae are thicker than the neurosetae. One pair of eyes is visible dorsally, but the anterior pair of eyes cannot be seen except from the side. The lateral prostomial antennae are inserted ventrally to the medial antenna. Color highly variable, though brown is common.
- license
- cc-by-nc-sa
- copyright
- Rosario Beach Marine Laboratory
Distribution
provided by World Register of Marine Species
Arctic; Labrador to New Jersey; Bering Sea to s. California; Japan, Yellow Sea, Indian Ocean; Iceland and Norway to Mediterranean and Adriatic
North-West Atlantic Ocean species (NWARMS)
- license
- cc-by-4.0
- copyright
- WoRMS Editorial Board
Habitat
provided by World Register of Marine Species
intertidal, bathyal, infralittoral and circalittoral of the Gulf and estuary
North-West Atlantic Ocean species (NWARMS)
- license
- cc-by-4.0
- copyright
- WoRMS Editorial Board
