Branchial Brooding in the Pirate Perch, Aphredoderus sayanus (Gilliams)

Boltz, J. M.; Stauffer, Jay R.

doi:10.2307/1445309

Cited by 8 publications

(7 citation statements)

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“…After observing expressed eggs moving along a groove into the gill chamber, Martin and Hubbs (1973) hypothesized that the female A. savanus incubates eggs in her branchial cavities, similar to some cavefishes (Aphredoderiformes: Amblyopsidae) (e.g., northern cavefish Amblyopsis spelaea) (Pflieger 1997). Boltz and Stauffer (1986) further strengthened this argument after examining one female A. savanus museum specimen with three eggs in the left branchial cavity. However, after field and aquaria observations, Poly and Wetzel(2003) described transbranchioral spawning and suggested it could be an evolutionary precursor to branchial brooding of cavefish.…”

Section: Introductionmentioning

confidence: 87%

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Observations of the Pirate Perch,Aphredoderus sayanus(Gilliams), with Comments on Sexual Dimorphism, Reproduction, and Unique Defecation Behavior

Tiemann¹

2004

Journal of Freshwater Ecology

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Analysis of variance results showed significant differences in measurements on 71 specimens of Aphredoderus sayanus comparing standard length (F = 2 1.9 1, P < 0.000 l), maximum depth (F = 8.44, P = 0.006), and standard length to body depth ratio (F = 9.1 1, P = 0.004), indicating that this fish is sexually dimorphic with females being larger and more full-bodied than males. In laboratory observations, a pair of A. sayanus created a nest and successfully spawned, which strengthens the argument that this fish might not be a branchial brooder but instead might be a nest builder with the female releasing adhesive eggs in the proximity of the nest. On three separate daytime occasions, A. sayanus ventured outside its refuge approximately to the point that only its head and anus were exposed, defecated, and then backed into its refuge. The jugular position of the anus might allow adult A. sayanus to partially leave its refuges to defecate to avoid altering water quality and without fully exposing itself to predators. This unique defecation behavior might explain the evolutionary reason for the position of the anus in adult 8.

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Section: Introductionmentioning

confidence: 87%

“…Brill (1977) discovered about 100 eggs approximately 2 mm in diameter. Boltz and Stauffer (1986) stated that the three eggs discovered in the branchial cavity in the A. sayanus museum specimen were yellow, spherical, and 1.4 mm in diameter.…”

Section: Reproductive Observationsmentioning

confidence: 99%

Observations of the Pirate Perch,Aphredoderus sayanus(Gilliams), with Comments on Sexual Dimorphism, Reproduction, and Unique Defecation Behavior

Tiemann¹

2004

Journal of Freshwater Ecology

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“…Furthermore, gill-brooding has been reported in the Northern Cavefish Amblyopsis spelaea (Breder and Rosen, 1966), a representative of the related family Amblyopsidae, whose six member species all also display a forward shifted urogenital pore (Nelson, 1994). However, no direct evidence for gill-brooding exists in Pirate Perch, the closest suggestion perhaps being a single observation of three eggs inside the branchial cavity of one museum-preserved female (Boltz and Stauffer, 1986). One reason to doubt gill-brooding was noted by Katula (1992): space within the branchial cavity of this species is insufficient to hold an entire clutch of eggs.…”

mentioning

confidence: 99%

Spawning Behavior and Genetic Parentage in the Pirate Perch (Aphredoderus sayanus), a Fish with an Enigmatic Reproductive Morphology

Fletcher¹,

Dakin²,

Porter³

et al. 2004

Copeia

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“…1980, Gelwicks 1996, Killgore and Baker 1996. Adult pirate perch are often abundant in low current velocity habitats such as woody debris, leaf litter, and under-cut banks (Gelwicks 1996(Gelwicks , blonzyk et al 1997, but because of their secretive nature, there is little information regarding their breeding behavior (Shepherd andHuish 1978, Boltz andStauffer 1986).…”

mentioning

confidence: 99%

“…It has been reported that pirate perch are nest spawners t h a t lay adhesive eggs (Breder andRosen 1966, Eddy andUnderhill 1974). However, the jugular position of the vent and urogenital pore has led to speculation t h a t pirate perch brood their eggs in their gill chambers (Martin andHubbs 1973, Boltz andStauffer 1986). similar to northern cavefish (Amblvo~sis s~e l a e a ; Breder andRosen 1966.…”

mentioning

confidence: 99%