Reproductive biology of the rosylip sculpin, an intertidal spawner
| Autor: | C. A. Ruben, K. A. Zarrella, Christopher W. Petersen, Carlotta Mazzoldi |
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| Rok vydání: | 2004 |
| Předmět: |
biology
urogenital system Ecology fungi Filial cannibalism Aquatic Science Mating system biology.organism_classification Reproductive biology behavior and behavior mechanisms Sculpin Ascelichthys rhodorus Mating External fertilization Sperm competition reproductive and urinary physiology Ecology Evolution Behavior and Systematics |
| Zdroj: | Journal of Fish Biology. 64:863-875 |
| ISSN: | 1095-8649 0022-1112 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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