Growth of dark chub, Zacco temmincki (Cyprinidae), with a discussion of sexual size differences

Katano, Osamu

doi:10.1023/a:1007348826218

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…However, our finding that chubs responded significantly stronger to the collision sound than to music noise suggests that the collision sound may convey an important message to chubs. Egg cannibalism and satellite spawning are common in chubs (Katano 1992a(Katano , 1992b(Katano , 1998Katano & Maekawa 1995) and we observed that some chubs attracted by the collision sound performed spawning-like actions during our experiments (FIGURE 4). Therefore, we believe that the collision sound indicates where a spawning event is happening and surrounding chubs use it to locate the event so that they can either eat eggs and/or release their own sperm onto the eggs.…”

Section: Discussionmentioning

confidence: 59%

“…), only a few individuals of those species were attracted (data not shown). In addition, while the hearing sensibility in cyprinids and mating and reproductive behaviors of the target chubs are similar (Katano 1985(Katano , 1990a(Katano , 1990b(Katano , 1992b(Katano , 1994(Katano , 1998Wang et al 1995;Yan et al 1995), they are different from those of the other species. Therefore, we excluded the other species from the analyses.…”

Section: Methodsmentioning

confidence: 97%

“…Such violent shaking movements often disturb sand and gravel, helping bury the eggs in the redd to protect them from cohabited or conspecific egg eaters. The behavior of egg cannibalism is believed to be accompanied by spawning behavior, and has been reported in the Japanese chub Zacco temminckii (Katano 1992a(Katano , 1992b(Katano , 1998Katano & Maekawa 1995). One can easily observe many cohabitated male and female Japanese chubs and/or other cyprinids swimming straight toward the redd, being spawned satellites or egg eaters, during or after spawning (Katano 1992a(Katano , 1992b.…”

Section: Introductionmentioning

confidence: 91%

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Chub movement is attracted by the collision sounds associated with spawning activities

WANG

LIN

Huang

et al. 2022

Zootaxa

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Cyprinids (carps, chubs and minnows) possess well-developed hearing and high sensitivity to sound pressure. The sensitive hearing may assist cyprinids with searching for food, territory defense, and mating behavior. Many paired fishes violently shake in sand and gravel while spawning in rivers. However, no study has examined the ecological importance of the collision sound made by the behavior. This study examined whether cohabitated chubs (Opsariichthys evolans and Zacco platypus) use the collision sound as a signal to locate spawning events so they can be a male satellite or egg eater. Three types of sounds (i.e., collision sound, music noise and ambient noise) were played with or without jerkbaits at the midstream of the Keelung River, Taiwan during the spawning season in 2018 and 2019. Generalized linear mixed models were then built to examine the effects of the sound types and the presence of jerkbaits on the number of individuals that the two chubs attracted. Results showed significantly different levels of attractiveness among the three sound types, with the collision sound attracting most fishes, including both females and males, followed by music noise and ambient noise. The presence of jerkbaits increased the number of fishes attracted, but the effect was only statistically marginally significant. These results suggest that the collision sound as an acoustic signal may be more important than a visual signal for the chubs to locate spawning events of other mating pairs, probably because of the longer transmission distance of the former. The present study demonstrates the ecological meanings of the collision sounds made in association with spawning activities of the chubs and implies that the native chub's spawning activities may be affected by the introduced Z. platypus. More studies on the interactions between these cohabitated chubs will benefit the conservation of native chubs.

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Section: Discussionmentioning

confidence: 59%

Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 91%

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Chub movement is attracted by the collision sounds associated with spawning activities

WANG

LIN

Huang

et al. 2022

Zootaxa

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“…In some species, however, males are larger than females (Mann, 1980). The exact reason for the size variation is not clear (Katano, 1998). However, several researchers reported that the evolution of larger body size in males likely results from male-male competition associated with a polygynous mating system (Katano, 1998;Kim et al, 2008).…”

Section: Accessory Sexual Charactersmentioning

confidence: 99%

Sexual Dimorphism in Commercially Important Fish Species in India: A Review

Sharma,

Singh

2024

BKAP

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Sexual dimorphism in fishes is an important biological aspect, which helps distinguish males and females based on various primary and secondary sexual characteristics. Based on sexual dimorphic characteristics fishes can be categorized as monomorphic, temporary dimorphic and permanent dimorphic. These characters can be either persistent or non-persistent types in fishes. Sexual dimorphism also can be determined using biometric characteristics as well. In fish, males typically display more conspicuous sexual characteristics compared to females, including the development of vibrant colouration, nuptial tubercles, or the formation of accessory organs. Sexual dimorphism is a significant trait helpful in categorizing and classifying fish species more accurately. It also has significant implications for commercial fisheries, which can aid in catch from the wild. This also can contribute to understanding the intricacies of aquatic ecosystems but also underscores the practical applications of studying sexual dimorphism in the context of sustainable fisheries management.

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Sexual size dimorphism, growth, and maturity of the fluvial eight-barbel loach in the Kako River, Japan

Aoyama¹

2007

Ichthyol Res

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The maturation and growth pattern of the fl uvial eight-barbel loach Lefua sp. (Japanese name: nagare-hotoke-dojo), an endangered species, was investigated using an individual identifi cation-recapture method from 1995 to 1998 in an upper reach of a headwater tributary of the Kako River, Hyogo Prefecture, Japan. Based on observations of the gonads through the abdominal skin, the loach was estimated to breed mostly from May to July. All the males matured by age 1 + , and all the females matured by age 2 + . Gamete release in all individuals of both males and females was predicted from recaptured loaches during each breeding season. The standard length of mature females was signifi cantly larger than that of males, showing sexual size dimorphism (SSD). The maximum sizes recorded were 75.4 mm SL for females and 61.2 mm SL for males. Both males and females of immature specimens grew mainly from May to November, including the breeding season, with no signifi cant differences in growth rates between them. After sexual maturity, both males and females grew mainly from July to October (or November), after the breeding season, and the females exhibited higher growth rates than males. Therefore, SSD of the species seems to be attributable to the different growth rates after maturity. The longevity of the loach was estimated to exceed ten years based on individual growth patterns of various sizes during the survey period. It is likely that the loach has an iteroparous life history, breeding every year, and moderate growth rates after maturity.

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Growth of dark chub, Zacco temmincki (Cyprinidae), with a discussion of sexual size differences

Cited by 10 publications

References 24 publications

Chub movement is attracted by the collision sounds associated with spawning activities

Chub movement is attracted by the collision sounds associated with spawning activities

Sexual Dimorphism in Commercially Important Fish Species in India: A Review

Sexual size dimorphism, growth, and maturity of the fluvial eight-barbel loach in the Kako River, Japan

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