Hermaphroditism in Citharichthys cornutus (Heterosomata, Family Bothidae)

Gutherz, Elmer J.

doi:10.2307/1442085

Cited by 2 publications

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“…Occasionally gonads have both mature testicular tissue with sperm and ovarian tissue containing vitellogenic stage oocytes, but this is unusual, as far as we can determine. Such gonads arise with low incidence and mature testicular and ovarian tissue configurations may be inconsistent between individuals of a species (Turner 1931; Dence 1938; Lagler and Chin 1951; Gutherz 1969; Dorfman and Heyl 1976; Dominguez et al. 1989).…”

Section: Definitionsmentioning

confidence: 99%

Functional hermaphroditism in teleosts

2008

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Introduction 2Definitions 3Bisexual 3Abstract Teleost fishes are characterized by a diversity of sexual patterns. Hermaphroditism, the expression of both male and female reproductive function in a single individual, generates the most curiosity and controversy. Yet diagnosis of this form of sexuality continues to challenge workers, in particular the distinction between functional and non-functional hermaphroditism. This distinction, reflected as it is in the relationships between gonad form and function, is important if we wish to improve our understanding of the origin of hermaphroditism in the teleosts and of its highly sporadic expression today. Although structure can indicate phylogenetic affinities, it does not always reflect reproductive function, and function is important for understanding adaptation. With resurgent interest in hermaphroditism comes the recognition that understanding sexual pattern is not only important for better knowledge of reproductive biology and ecology but may also elucidate phylogenetic relationships. On the basis of a conservative and clearly defined set of diagnostic criteria, which incorporate new accounts of hermaphroditic species, and by applying an improved understanding of gonadal ontogeny, a comprehensive review and careful re-examination of all primary literature was conducted. This overview documents the incidence of hermaphroditism in teleosts and explores its phylogenetic distribution, possible origin and range of expression. The review confirms functional hermaphroditism in 27 teleost families in seven orders, predominantly among tropical, marine perciforms in which its diversity of expression is greatest. In families with functional hermaphrodites, the sexual pattern is widespread and often highly variable in expression, even within a single genus or between populations. Based on our understanding of gonadal ontogeny in teleosts and on known phylogenetic interrelationships, the origin of functional hermaphroditism is most parsimoniously explained by a proto-hermaphroditic condition in teleosts and cyclostomes, constituting a hermaphroditic potential for these groups. Exploitation and expression of this potential appear to be a response to a suite of environmental and biological factors, opportunities and constraints that result in the independent appearance of the hermaphroditic option in many different fish lineages.

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Section: Definitionsmentioning

confidence: 99%

Functional hermaphroditism in teleosts

2008

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“…Before 141 dissection, fish were defrosted in seawater. All flatfish were identified with the FAO sheets 142 (FAO, 1978), Gutherz (1967) and Top & Hoff Jr (1972). After species identification, 143 standard length (cm), total length (cm) and wet weight (g) was determined.…”

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confidence: 99%

Occurrence and life history characteristics of tropical flatfishes at the coral reefs of Curaçao, Dutch Caribbean

Veer

Cardoso

Mateo

et al. 2018

Journal of Sea Research

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17 18 In this paper, life history characteristics of tropical flatfishes occurring at the 19 fringing reefs of Curaçao to a depth of 20 m were studied. In total four flatfish species were 20 caught, three common Bothidae species: the eyed flounder Bothus ocellatus, the mottled 21 or maculated flounder B. maculiferus and the peacock flounder B. lunatus, and -in small 22 temperature, the Bothus species showed a similar variability and range in growth rate as 34 some temperate and subtropical flatfish species. These observations do not fit the 35 hypothesis postulated by Pauly (1994) of an increasing importance of food-limitation in 36 juvenile flatfish with decreasing latitude, despite the low densities and biomass of benthic 37 in-and epifauna in the soft sediments in mangroves, seagrass beds and the reefs of 38 Curaçao. 39 40

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Hermaphroditism in Citharichthys cornutus (Heterosomata, Family Bothidae)

Cited by 2 publications

References 0 publications

Functional hermaphroditism in teleosts

Functional hermaphroditism in teleosts

Occurrence and life history characteristics of tropical flatfishes at the coral reefs of Curaçao, Dutch Caribbean

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