Life History of the Swampfish From a North Carolina Stream

Ross, Steve W.; Rohde, Fred C.

doi:10.1656/1528-7092(2003)002[0105:lhotsf]2.0.co;2

Cited by 7 publications

(6 citation statements)

References 9 publications

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“…Disruption of the monophyly of Aphredoderus + Amblyopsidae, as in Murray & Wilson (1999), is highly intriguing. All adult members of these groups share the apomorphic condition of the urogenital pore located in the throat region, due to a migration anteriorly during ontogeny (Ross & Rohde 2003; Fletcher et al. 2004).…”

Section: Discussionmentioning

confidence: 99%

Regressive progression, progressive regression or neither? Phylogeny and evolution of the Percopsiformes (Teleostei, Paracanthopterygii)

Dillman

Bergstrom

Noltie³

et al. 2010

Zoologica Scripta

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Dillman, C.B., Bergstrom, D.E., Noltie, D.B., Holtsford, T.P. & Mayden, R.L. (2010). Regressive progression, progressive regression or neither? Phylogeny and evolution of the Percopsiformes (Teleostei, Paracanthopterygii). —Zoologica Scripta, 40, 45–60. Cave animals have fascinated scientists for centuries, and clades consisting primarily of cave‐adapted species are even more intriguing. The percopsiforms are an enigmatic group of fishes comprised of nine species in seven genera, with four species in three genera exhibiting characteristic troglomorphic features, such as a lack of pigmentation and eyes. Nucleotide characters presented here provide the first test of monophyly for both the Percopsiformes and Amblyopsidae with this character type and taxonomic completeness. Characters of ND2 support a monophyletic Percopsiformes and Amblyopsidae and further document phylogeographic subdivision in two stygobitic genera, Amblyopsis and Typhlichthys, in Amblyopsidae. Age estimates from time‐calibrated branch lengths utilizing two independent intra‐lineage fossils indicate that the ancestor to amblyopsids is Eocene in age, and that phylogeographic subdivision in both Amblyopsis and Typhlichthys occurred primarily in the Miocene. Interestingly, ancestral character state reconstruction for the amblyopsids strongly supports the re‐evolution of eyes and body pigment. While certainly unconventional, but supported with this character set, the hypothesis provides continued challenge to Dollo’s Law.

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Section: Discussionmentioning

confidence: 99%

Regressive progression, progressive regression or neither? Phylogeny and evolution of the Percopsiformes (Teleostei, Paracanthopterygii)

Dillman

Bergstrom

Noltie³

et al. 2010

Zoologica Scripta

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“…These trends agree with Murdy and Wortham (1980), who examined 43 A. sayanus and concluded that gonads begin to ripen in the fall with testes maturing earlier than ovaries. There was a positive relationship (r = 0.51, P = 0.001) between standard length and the number of mature ova, but there was no trend (r = 0.21, P = 0.20) between standard length and the size of mature ova; both results are similar to C. cornuta (Ross and Rohde 2003).…”

Section: Reproductive Observationsmentioning

confidence: 67%

“…Females were longer (65.3 mm + 11.4), deeper (19.7 mm + 4.0), and had a higher mean ratio (3.4 f 0.3) compared to males (53.9 mm + 8.8, 17.3 mm + 2.9, and 3.1 + 0.2, respectively), which is in agreement with Brill (1977). Ross and Rohde (2003) reported that the C. cornuta, another Aphredoderiform, is sexually dimorphic with females being larger than males, perhaps to accommodate egg carrying; the same might be true of A. sayanus.…”

Section: Reproductive Observationsmentioning

confidence: 99%

“…Hemdal (2003) stated that A. sayanus scatters non-adhesive eggs that are left to develop unguarded. Also, not all -Aphredoderiformes are branchial brooders; Ross and Rohde (2003) suggested that the swampfish, Chologaster cornuta (Amblyopsidae), is a nest builder. Because of conflicting evidence and the secretive nature of A. savanus, Poly and Wetzel(2003) stated that future reproduction studies of A. savanus (e.g., fecundity and alternative reproductive strategies) should be addressed.…”

Section: Introductionmentioning

confidence: 99%

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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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“…Both Chologaster and Forbesichthys are nocturnal benthic predators that seek shelter during the daytime and exhibit strong thigmotaxis (Weise 1957;Smith and Welch 1958;Niemiller and Poulson 2010). Chologaster typically occurs in heavily vegetated and shaded swamps and backwater habitats where they can be collected in dense vegetation, leaf litter, and other organic debris (Cooper and Rohde, 1980;Ross and Rohde, 2003) and are rarely found in flowing water (Poulson 1960). Likewise, Forbesichthys typically are found in dense vegetation, under rocks, or seek shelter underground deep in springs and caves (Weise 1957;Smith and Welch 1958;Niemiller and Poulson 2010).…”

Section: Discussionmentioning

confidence: 99%

Variation in cephalic neuromasts surface and cave-dwelling fishes of the family Amblyopsidae (Teleostei: Percopsiformes)

Soares

Niemiller

2019

Preprint

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Cave adaptation has led to unique sensory specializations to compensate for the lack of visual cues in aphotic subterranean habitats. As the role of vision is reduced or disappears, other sensory modalities become hypertrophied allowing cave-adapted organisms to successfully detect and interact their surrounding environment. The array of aquatic subterranean habitats, from fast-flowing streams and waterfalls, to quiet phreatic pools, presents a diverse palette to examine what possible sensory solutions have evolved against a backdrop of complete darkness.Mechanosensation is enhanced in many subterranean animals to such an extent that a longer appendage is recognized as a prominent troglomorphic adaptation in many metazoans. Fishes, however, not only interact with the environment using their fins, but also with specialized sensory organs to detect hydrodynamic events. We hypothesize that subterranean adaptation drives the hypertrophy of the mechanosensory lateral line, but that other environmental forces dictate the specific neuromast phenotype. To this end, we studied differences in the cephalic lateral line of the fishes in the North American family Amblyopsidae, which includes surface, cave-facultative, and cave-obligate species. None of the taxa we examined possessed canal neuromasts on the head. Primarily surface-dwelling species, Chologaster cornuta and Forbesichthys agassizii, possessed receded neuromasts throughout most of the head, with a few on papillae located in front of the nostrils and on ventral grooves on each side of the mouth. The cavefishes Amyblopsis spelaea and Typhlichthys subterraneous possessed papillate superficial neuromasts all over the head. We speculate that the change from the surface to the cave environment has led to papillate neuromasts in this group, which are likely shaped to detect the hydrodynamic characteristics of the boundary layer created by the swimming fish. Moving sensory organs from the surface of the body out into the boundary layer could increase sensitivity to high frequency stimuli created by prey, predators, and conspecifics.

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Life History of the Swampfish From a North Carolina Stream

Cited by 7 publications

References 9 publications

Regressive progression, progressive regression or neither? Phylogeny and evolution of the Percopsiformes (Teleostei, Paracanthopterygii)

Regressive progression, progressive regression or neither? Phylogeny and evolution of the Percopsiformes (Teleostei, Paracanthopterygii)

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

Variation in cephalic neuromasts surface and cave-dwelling fishes of the family Amblyopsidae (Teleostei: Percopsiformes)

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