Reproductive biology of the rosylip sculpin, an intertidal spawner

Authors: Petersen, C. W.1; Zarrella, K. A.1; Ruben, C. A.2; Mazzoldi, C.2

Source: Journal of Fish Biology, Volume 64, Number 4, April 2004 , pp. 863-875(13)

Publisher: Wiley-Blackwell

Buy & download fulltext article:

OR

Price: $48.00 plus tax (Refund Policy)

Abstract:

Rosylip sculpin Ascelichthys rhodorus spawned in the intertidal during the winter in the north‐eastern Pacific. Large numbers of males typically congregated at spawning sites, where females deposited clutches. The mating system of this species was external fertilization and group spawning at specific oviposition sites under boulders in the intertidal, and no alternative male mating strategies. Males were abundant at sites while oviposition was occurring, and most abandoned the sites as spawning tapered off seasonally despite the presence of developing clutches. Experimental removal of males from sites suggested that males provided some short‐term benefits to clutches, with catastrophic loss of clutches significantly lower when males were present. The large number of males at an oviposition site and histological evidence indicating high sperm production and storage of sperm prior to release suggest a high level of sperm competition in this species. This spawning pattern appears to differ in substantial ways from any other reported fish mating system.

Keywords: external fertilization; filial cannibalism; reproduction; sculpin; spawning; sperm competition

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1111/j.1095-8649.2004.00355.x

Affiliations: 1: College of the Atlantic, 105 Eden St., Bar Harbor, ME 04 609, U.S.A., 2: Friday Harbor Laboratories, University of Washington, 620 University Road, Friday Harbor, WA 98 250, U.S.A. and

Publication date: April 1, 2004

Related content

Tools

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page