Paternity testing of wild black rockfish Sebastes inermis (brownish type) from the Seto Inland Sea of Japan

González, Enrique; Murakami, Tomoya; Teshima, Yuki; Yoshioka, Kouji; Jeong, Dalsang; Umino, Tetsuya

doi:10.1007/s10228-008-0055-0

Cited by 11 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No evidence of multiple paternity was found in broods from quillback rockfish. Multiple paternity has been described in 13 of 21 rockfish species examined to date (Yoshida et al 2001, Hyde et al 2008, Sogard et al 2008, Van Doornik et al 2008, Blanco Gonzalez et al 2009, and seems to be common in the genus. Considering the close relationship of copper and quillback rockfishes (Hyde & Vetter 2007), the absence of evidence of multiple paternity in quillback rockfish in the present study may be a consequence of low sample size, rather than evidence that it does not occur.…”

Section: Parentage Analysismentioning

confidence: 99%

“…Ultimately, the decision whether or not to mate appears to lie with the female (Hyde et al 2008). Multiple mating, with up to 4 different fathers, has been demonstrated in 13 different rockfish species to date, and may be a common bethedging strategy in the genus when mate selection criteria are uncertain or incomplete (Yasui 2001, Hyde et al 2008, Sogard et al 2008, Van Doornik et al 2008, Blanco Gonzalez et al 2009). As consequences of selective mate choice by females and multiple paternity, a population of organisms that experiences sweepstakes recruitment, such as rockfishes, may experience enhanced genetic diversity and avoid the loss of rare alleles, may see diminished impacts of inbreeding depression, and may benefit from increased effective population size (Hedgecock 1994).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mate selection in captive-breeding rockfishes Sebastes spp.: inference from parentage analysis and the major histocompatibility complex (MHC)

Johansson¹,

Clifford²,

Fodness³

et al. 2012

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Rockfish species of the genus Sebastes are notable for being numerous and diverse. Rockfishes are unusual among fish because they fertilize their eggs internally and release live, swimming larvae. They undergo complex courting behaviors, which may allow females to be selective about their mates. The major histocompatibility complex (MHC) is implicated as having an important influence on mate selection in other fishes, especially in sticklebacks and salmonids. Research suggests that females choose mates that optimize the MHC genotypes of their offspring. Previous research on rockfishes indicates that multiple functional MHC sequences may be found in each species, and that multiple mating is common in the genus, possibly as a bet-hedging strategy against uncertain or incomplete mate-selection information. In this project, we characterized the MHC genotypes of copper (S. caurinus) and quillback (S. maliger) rockfish parents, assessed parentage of 14 larval broods, and assessed the MHC genotypes of the parents to determine if MHC-mediated mate choice was occurring. As in previous studies, we found that rockfishes possess multiple, highly variable MHC genes, and that females may mate with multiple males. We also found evidence of female preference for particular males. However, we found no strong evidence of selection based on MHC genotype. Females were not consistently selective based on relatedness, allele count, proportion of shared alleles, or minimum, mean, or maximum DNA or amino acid genetic distance. Instead, it appears that females were selective based on other measures of mate quality not considered in this study, with some hedging of bets through multiple mating also occurring.

show abstract

Section: Parentage Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mate selection in captive-breeding rockfishes Sebastes spp.: inference from parentage analysis and the major histocompatibility complex (MHC)

Johansson¹,

Clifford²,

Fodness³

et al. 2012

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

Fertilization modes and the evolution of sperm characteristics in marine fishes: Paired comparisons of externally and internally fertilizing species

Ito

Morita

Okuno

et al. 2022

Ecology and Evolution

View full text Add to dashboard Cite

Fertilization mode may affect sperm characteristics, such as morphology, velocity, and motility. However, there is little information on how fertilization mode affects sperm evolution because several factors (e.g., sperm competition) are intricately intertwined when phylogenetically distant species are compared. Here, we investigated sperm characteristics by comparing seven externally and four internally fertilizing marine fishes from three different groups containing close relatives, considering sperm competition levels. The sperm head was significantly slenderer in internal fertilizers than in external fertilizers, suggesting that a slender head is advantageous for swimming in viscous ovarian fluid or in narrow spaces of the ovary. In addition, sperm motility differed between external and internal fertilizers; sperm of external fertilizers were only motile in seawater, whereas sperm of internal fertilizers were only motile in an isotonic solution. These results suggest that sperm motility was adapted according to fertilization mode. By contrast, total sperm length and sperm velocity were not associated with fertilization mode, perhaps because of the different levels of sperm competition. Relative testis mass (an index of sperm competition level) was positively correlated with sperm velocity and negatively correlated with the ratio of sperm head length to total sperm length. These findings suggest that species with higher levels of sperm competition have faster sperm with longer flagella relative to the head length. These results contradict the previous assumption that the evolution of internal fertilization increases the total sperm length. In addition, copulatory behavior with internal insemination may involve a large genital morphology, but this is not essential in fish, suggesting the existence of various sperm transfer methods. Although the power of our analyses is not strong because of the limited number of species, we propose a new scenario of sperm evolution in which internal fertilization would increase sperm head length, but not total sperm length, and change sperm motility.

show abstract

Ecomorphology of three closely related Sebastes rockfishes with sympatric occurrence in Seto Inland Sea, Japan

et al. 2023

View full text Add to dashboard Cite

Paternity testing of wild black rockfish Sebastes inermis (brownish type) from the Seto Inland Sea of Japan

Cited by 11 publications

References 25 publications

Mate selection in captive-breeding rockfishes Sebastes spp.: inference from parentage analysis and the major histocompatibility complex (MHC)

Mate selection in captive-breeding rockfishes Sebastes spp.: inference from parentage analysis and the major histocompatibility complex (MHC)

Fertilization modes and the evolution of sperm characteristics in marine fishes: Paired comparisons of externally and internally fertilizing species

Ecomorphology of three closely related Sebastes rockfishes with sympatric occurrence in Seto Inland Sea, Japan

Contact Info

Product

Resources

About