Habitat structure and reproductive success in the beaugregory damselfish

Itzkowitz, Murray; Makie, D.

doi:10.1016/0022-0981(86)90248-0

Cited by 49 publications

(50 citation statements)

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“…This fish has commonly been used in studies on breeding success (Itzkowitz & Makie 1986;Itzkowitz 1991;Itzkowitz & Haley 1998) and is known to perform partial filial cannibalism (Itzkowitz & Makie 1986), as are many congeners (S. dorsopunicans (Petersen 1990;Petersen & Hess 1991); S. partitus (Knapp & Kovach 1991;Knapp & Warner 1991); S. rectifraenum (Hoelzer 1988(Hoelzer , 1992Petersen & Marchetti 1989)). Males are territorial and use their territory for both feeding and reproduction (Ebersole 1977;Itzkowitz 1977Itzkowitz , 1985Itzkowitz , 1990Itzkowitz & Makie 1986;Itzkowitz & Slocum 1995). Parental care consists solely of guarding, and males do not fan developing embryos (Breder & Rosen 1966;Thresher 1984;Itzkowitz & Makie 1986).…”

Section: Introductionmentioning

confidence: 99%

Filial cannibalism improves survival and development of beaugregory damselfish embryos

Payne

Smith

Campbell

2002

Proc. R. Soc. Lond. B

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Cannibalism of small numbers of offspring by a parent has been proposed as an adaptive parental strategy, by providing energy to support parental care. However, there are few empirical studies to support this hypothesis. We conducted field and laboratory experiments to investigate partial filial cannibalism in Stegastes leucostictus, a coral reef fish with paternal care. Partial cannibalism was shown to be common, and males were found to remove developing embryos from throughout a clutch in a random pattern, rather than in the more aggregated pattern seen during embryo predation. Males that received a diet supplement grew faster than control males, but did not engage in less cannibalism. Also, males did not concentrate cannibalism on early embryonic stages with the highest energetic value. Experimental reduction of embryo densities was found to significantly increase embryo development rate and survival from egg deposition to hatching, and experimental reduction of oxygen levels significantly increased rates of partial filial cannibalism by males. Artificial spawning sites with low oxygen levels were avoided by spawning females, and cannibalism rates by males were higher. We propose that partial filial cannibalism serves as an adaptive parental strategy to low oxygen levels in S. leucostictus by increasing the hatching success of embryos.

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Section: Introductionmentioning

confidence: 99%

Filial cannibalism improves survival and development of beaugregory damselfish embryos

Payne

Smith

Campbell

2002

Proc. R. Soc. Lond. B

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“…Male size is positively correlated with male reproductive success in some fishes Thresher and Moyer 1983;Cote and Hunte 1989;Reynolds and Gross 1992), but there are also many fishes for which this does not hold (Thresher and Moyer 1983;Itzkowitz and Makie 1986;Petersen 1989;Knapp and Warner 1991;, or where the relationship is the result of differences in territory quality associated with male size (Hoelzer 1990). The reproductive success of males was examined to determine the pattern for Dascyllus albisella.…”

Section: Discussionmentioning

confidence: 99%

Bioacoustics and reproductive ecology of the damselfish Dascyllus albisella

Mann¹

1995

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While many fishes are known to produce sounds during courtship and aggression, the information contained in the sounds and their role in reproduction is not well understood. This thesis is an intensive investigation of the sounds produced by the damselfish Dascyllus albisella, the effect of the environment on their acoustic signals, and how the sounds relate to reproduction.D. albisella males produce pulsed sounds during the signal jump, visiting by females, mating, aggression to heterospecifics and conspecifics, and nest preparation. Females make only aggressive sounds. The pulse period of aggressive sounds was shorter than courtship sounds. There was no difference between visiting and mating sounds, except in pulse duration. Two types of aggressive sounds were produced, pops and chirps. Pops were more commonly made towards heterospecifics than conspecifics. There were no differences in courtship sounds made by males from Johnston Atoll and Hawaii, except in pulse duration, which are likely due to differences in the recording environment.The pulsed sounds produced during the signal jump of D. albisella were analyzed to determine what information they contain about the signal jump and how they change with propagation. There was no relationship between signal jump speed or distance with the number of pulses or pulse period of the sound. There was no consistent change in the peak frequency of pulses in a call. If echoes were present in the sound, the change in echo delay would likely have been too small for damselfish to detect. Sounds attenuated with distance such that the signal to noise ratio decreased from 17-25 dB at 1-2m to 5-10 dB at 11-12 m. It is unlikely that D. albisella can detect sounds at or beyond 11-12m from the sound source, based on noise masking data from other fishes. Pulse period is least affected by propagation when compared to peak frequency, pulse duration, inter-pulse interval, and coefficient of variation of pulse amplitudes within a call. These results suggest that the sound produced during the signal jump acts over short distances and that the pulse period provides the most reliable basis for signal detection.A passive acoustic detection system was developed to continuously record sound production activity of individual males in the field. The rate of sound production could be used to determine the timing of spawning. The daily rate of sound production increased until the day of spawning, after which it decreased by over half. Additionally, the amount of sound production at night was highest just before spawning. The passive acoustic detector also revealed that 12.. albisella had regular peaks of calling at dawn, similar to the dawn chorus in birds.Patterns of male reproductive success varied for individual males over successive reproductive cycles and was not correlated to male size. The variation in reproductive success suggests that females choose males based on characters that vary from cycle to cycle. Data from the passive acoustic detector showed rates of courtship were po...

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“…Nests with smaller numbers of eggs are more likely to disappear before hatching in all species for which data were available. The occurrence of filial cannibalism in these species has often been directly observed (Table 2) or suggested (Morris, 1958;Ochi, 1985), although egg predation by nonparental individuals has also been observed in at least one study (Itzkowitz and Mackie, 1986). In Hypsopops rubicunda, termination of single clutches occurs after an initial period in which a male defending eggs has an increased probability of obtaining additional clutches.…”

Section: Discussionmentioning

confidence: 99%

“…However, cannibalistic males may have been in poorer physical condition, since cannibalism rate was affected by the interval without eggs following the previous clutch cycle (males that cannibalized had less "time off"). Several studies of pomacentrids have shown decreased feeding rates or increased aggression rates for parental versus nonparental individuals (Clarke, 1971;Keenleyside, 1972;Mapstone and Wood, 1975;Itzkowitz and Mackie, 1986;H. Hess, unpubl, [aggression-rate data for S. rectifraenum]).…”

Section: Discussionmentioning

confidence: 99%

“…of a preferred oviposition site longer (Rohwer, 1978;Dominey and Blumer, 1984). Because eggs of all ages are quickly eaten by both con specific and heterospecific fish once parents stop providing care (Barash, 1980;Itzkowitz and Mackie, 1986), filial cannibalism should be a common behavior ofabandoning parents. This scenario has led these authors to predict what qualities should characterize cannibalized clutches in a population and what female counterstrategies should evolve to reduce cannibalism of their eggs.…”

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confidence: 99%

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FILIAL CANNIBALISM IN THE CORTEZ DAMSELFISHSTEGASTES RECTIFRAENUM

Petersen

Marchetti

1989

Evolution

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Abstract.-Male cortez damselfish, Stegastes rectifraenum, in a central Gulf of California population, ate a large percentage (28.3%) ofthe clutches they received. This high rate offilial cannibalism permitted the testing of several predictions concerning the types of clutches that should be preferentially eaten and the mating tactics females should employ to reduce cannibalism rates. Males ate clutches that were smaller than average and that were at early stages of development. Experimentally reduced clutches were consumed at higher rates than controls. When multiple clutches were present, males preferentially ate the younger, smaller clutches. Females were more likely to deposit eggs with males who were caring for other early-stage eggs and to avoid males with latestage eggs. This pattern was accentuated in females that deposited smaller clutches. These results provide evidence that filial cannibalism represents an adaptive response to clutches that do not provide adequate benefits to warrant the costs of parental care.

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Habitat structure and reproductive success in the beaugregory damselfish

Cited by 49 publications

References 10 publications

Filial cannibalism improves survival and development of beaugregory damselfish embryos

Filial cannibalism improves survival and development of beaugregory damselfish embryos

Bioacoustics and reproductive ecology of the damselfish Dascyllus albisella

FILIAL CANNIBALISM IN THE CORTEZ DAMSELFISHSTEGASTES RECTIFRAENUM

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