Male mating posture and courtship coloration of the temperate marine tubesnout, Aulorhynchus flavidus (Gill).
Reproductive strategies have been well documented in the marine realm, including monogamous pairs (Whiteman and Cote 2004), large broadcast breeding aggregations (Coleman et al. 1996, Colin 1996, Carolsfeld et al. 1997), sneak copulation (Pilastro and Bisazza 1999, Hurtado-Gonzales and Uy 2010) and nesting species (Limbaugh 1964, Wiley 1973). Limbaugh (1962) previously described the nesting habitat for the temperate marine tubesnout, Aulorhynchus flavidus (Gill), but male mating behavior has not been characterized. A proposed description of male mating behavior is reported here from observations of A. flavidus on display at the Aquarium of the Pacific (AOP) in Long Beach, California during early May, 2013.
Male A. flavidus pelvic fins are red in color (Fig. 1A) and are thought to remain that way year round (Love 2011). The heads of males are also dark blue to black with a prominent iridescent blue patch on their snout (Fig. 1B). Iridescent blue spots/coloration have also been observed along the full body length of males (Love 2011) while females are a drab brownish color throughout (Fig. 2). Although typically found at depths of 20 m, and as deep as 37 m (Love 2011), the preferred nesting habitat of A. flavidus is the upper blades of the macrophyte Macrocystis pyrifera. While bright coloration is common to tropical waters, it is disfavored in temperate marine habitats due to low light penetration at depth. The conspicuous coloration of males may be apparent only when actively breeding in the upper water column where red light is still present. It appears the pelvic fins are often folded up against the body (Fig. 1B) and covered partially by the pectoral fins when they are not actively displaying them. The anterior underside of male threespine stickleback (Gasterosteus aculeatus), another gasteriform species, are also red (Hagen et al. 1980) and both species breed in shallower water than they are typically found (~20-30 m depth). Similarities in external morphology despite differences in breeding habits perhaps suggest red coloration developed in a shared ancestor and has persisted over evolutionary time despite counter-selective pressures in temperate waters.
Male A. flavidus at AOP were observed flaring their fins in a declined (head-down) position (Fig. 1A) facing a nearby female, an action interpreted as a courtship display. While maintaining this posture, they may undulate their fins lightly with accompanied full body undulations, a behavioral display common among other fishes (Limbaugh 1964, Wiley 1973, Steele and Anderson 2006). A similar posture was observed when con-specific males were present, but were typically followed by a chase to displace the competitor male, actions not taken toward females. Due to the similarity of these interactions, it is difficult to definitively determine whether this is a generic social interaction or whether a true courtship display. A lack of suitable nesting habitat (giant kelp fronds), due the nature of the display aquaria at AOP, might have precluded oviposition by females, although it is questionable whether female spawning response necessitates an established nest (Limbaugh 1962). While the results of this study may not provide a definitive description of male mating behavior, it does offer a cursory characterization of a previously undocumented aspect of the behavior of this species. Further behavioral studies focusing on conspecific interactions would elucidate subtle differences and may provide greater insight to the reproductive behavior of A. flavidus.
Beauchamp, G. and P. Heeb. 2001. Social foraging and the evolution of white plumage. Evolutionary Ecology Research, 3:703-720.
Cairns, W.E. 1982. Biology and Behavior of Breeding Piping Plovers. The Wilson Bulletin, 94(4): 531-545. Carolsfeld, J., M. Tester, H. Kreiberg, and N.M. Sherwood. 1997. Pheromone-Induced Spawning of Pacific Herring. Hormones and Behavior, 31:256-268.
Christy, J.H. 1983. Female Choice in the Resource-Defense Mating System of the Sand Fiddler Crab, Uca pugilator. Behavioral Ecology and Sociobiology, 12:169-180.
Clarke, F.M. and C.G. Faulkes. 1997. Dominance and queen succession in captive colonies of the eusocial naked mole-rat, Heterocephalus glaber. Proceedings of the Royal Society of London B., 264: 993-1000.
Coleman, F.C., C.C. Koenig, and L.A. Collins. 1996. Reproductive styles of shallow-water groups (Pisces: Serranidae) in the eastern Gulf of Mexico and the consequences of fishing spawning aggregations. Environmental Biology of Fishes, 47:129-141.
Colin, P.L. 1996. Longevity of Some Coral Reef Fish Spawning Aggregations. Copeia, 1996(1): 189-192. DeMartini, E.E. and P.C. Sikkel. 2006. Reproduction. In: Allen, L.G., D.J. Pondella, and M.H. Horn, editors. The Ecology of Marine Fishes. California and Adjacent Waters. University of California Press, Berkeley and Los Angeles, California. University of California Press Ltd., London, England. Pp. 483-523.
Gibson, R.M. 1989. Field Playback of Male Display Attracts Females in Lek Breeding Sage Grouse. Behavioral Ecology and Sociobiology, 24:439-443.
Godin, J. and M.J. Morgan. 1985. Predator avoidance and school size in a cyprinodontid fish, the banded killifish (Fundulus diaphanous Lesueur). Behavioral Ecology and Sociobiology, 16:105-110.
Hagen, D.W., G.E.E. Moodie, and P.F. Moodie. 1980. Polymorphism for Breeding Colors in Gasterosteus aculeatus II. Reproductive success as a Result of Convergence for Threat Display. Evolution, 34(6): 1050-1059.
Hurtado-Gonzales, J.L. and J.A.C. Uy. 2010. Intrasexual competition facilitates evolution of alternative mating strategies in a colour polymorphic fish. BMC Evolutionary Biology, 10:391-401.
Limbaugh, C. 1962. Life History and Ecological Notes on the Tubenose, Aulorhynchus flavidus, a Hemibranch fish of Western North America. Copeia, 1962(3): 549-555.
--. 1964. Notes on the Life History of Two Californian Pomacentrids: Garibaldis, Hypsypops rubicunda (Girard), and Blacksmiths Chromis punctipinnis (Cooper). Pacific Science, 28:41-50.
Love, M.S. 2011. Certainly more than you want to know about the fishes of the pacific coast. Santa Barbara California, Really Big Press. Pp. 208-209.
Peterson, R.O., A.K. Jacobs, T.D. Drummer, L.D. Mech, and D.W. Smith. 2002. Leadership behavior in relation to dominance and reproductive status in gray wolves, Canis lupus. Canadian Journal of Zoology, 80:1405-1412.
Pilastro, A. and A. Bisazza. 1999. Insemination efficiency of two alternative male mating tactics in the guppy Poecilia reticulata. Proceedings of the Royal Society of London B., 266:1887-1891.
Roux, A.L., M.I. Cherry, and M.B. Manser. 2009. The vocal repertoire in a solitary foraging carnivore, Cynistic penicillata, may reflect facultative sociality. Naturwissenschaften., 96:575-584.
Steele, M.A. and T.W. Anderson. 2006. Predation. In: Allen, L.G., D.J. Pondella, and M.H. Horn, editors. The Ecology of Marine Fishes. California and Adjacent Waters. University of California Press, Berkeley and Los Angeles, California. University of California Press Ltd., London, England. Pp. 428-448.
Townsend, S.W., M. Zottl, and M.B. Manser. 2011. All Clear? Meerkats attend to contextual information in close calls to coordinate vigilance. Behavioral Ecology and Sociobiology., 65:927-1934.
Warner, R.R. 1975. The reproductive biology of the protogynous hermaphrodite Pimelopton pulchrum (pisces: labridae). Fisheries Bulletin, 73(2): 262-283.
Whiteman, E.A. and I.M. Cote. 2004. Monogamy in Marine Fishes. Biol. Rev., 79:351-375.
Wiley, J.W. 1973. Life history of the western north American goby, Coryphoterus nicholsii (bean). San Diego Soceity of Natural History, Transactions, 17(14): 187-208.
Michael J. Schram
California State University, Northridge, Michael.Schram.firstname.lastname@example.org
Larry G. Allen
California State University Northridge, email@example.com
Michael J. Schram and Larry G. Allen
Department of Biology, 18111 Nordhoff Street, California State University,
Northridge, California 91330-8303
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|Author:||Schram, Michael J.; Allen, Larry G.|
|Publication:||Bulletin (Southern California Academy of Sciences)|
|Date:||Dec 1, 2014|
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