New remarkable sexually dimorphic miniature species of <i>Hyphessobrycon</i> (Characiformes: Characidae) from the upper Rio Tapajós basin

Camelier, Priscila; Dagosta, Fernando César Paiva; Marinho, Manoela M. F.

doi:10.1111/jfb.13579

Cited by 10 publications

(6 citation statements)

References 40 publications

(49 reference statements)

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“…[26] redefined the genus to include T . marajoara , a species presenting all characters used by Géry [23] to raise the genus, except the strictly conical teeth in jaws (some multicuspid teeth occur in T . marajoara ), a condition similar to that of T .…”

Section: Discussionmentioning

confidence: 99%

“…Among fishes, sexual selection is responsible for the evolution of impressive morphological novelties. Specifically in the Characiformes, secondary sexual dimorphism is commonly associated to the occurrence of bony hooks on fins, breeding tubercles, gill glands, modified scales [2–10], shape and length of the dorsal, pelvic and anal fins [11–21], and sexual dichromatism [22,23].…”

Section: Introductionmentioning

confidence: 99%

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On a remarkable sexual dimorphic trait in the Characiformes related to the olfactory organ and description of a new miniature species of Tyttobrycon Géry (Characiformes: Characidae)

2019

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Among the order Characiformes, secondary sexual dimorphism is commonly associated to the occurrence of bony hooks on fins, shape and length of the dorsal and anal fins, and sexual dichromatism. The analysis of a new miniature Characidae species of the genus Tyttobrycon, described herein, yielded to the discovery of a sexually dimorphic trait related to nostril aperture and number of olfactory lamellae. In this type of dimorphism, mature males present larger nostril aperture and higher number of olfactory lamella than females. A dimorphic olfactory organ is for the first time recorded and described for a member of the Characiformes. Gross morphology and development of brain and peripheral olfactory organ of Tyttobrycon sp. n. are described and compared to other species of Characidae. It is hypothesized that such dimorphic trait is related to male-male detection during cohort competition in small characids. The new species of Tyttobrycon is diagnosed from its congeners by the number of branched anal-fin rays (19–21) and the absence of a caudal-peduncle blotch. It occurs in a small tributary of Rio Madeira basin, near to the limit between Brazil and Bolivia, Acre State, Brazil.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On a remarkable sexual dimorphic trait in the Characiformes related to the olfactory organ and description of a new miniature species of Tyttobrycon Géry (Characiformes: Characidae)

2019

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“…In certain fish species, sex is a morphological criterion to distinguish between male and female (sexual dimorphism) in aquaculture broodstock selection. In general, the character performance of males is more attractive than females (Camelier et al, 2018;Kottler & Schartl, 2018). This research showed that %LRCC and %ARCC values in males were higher than that of females (P<0.05) (Table 3).…”

Section: Meanmentioning

confidence: 73%

VARIATIONS OF RED COLOR COVERAGE OF CULTURED NEON TETRA (Paracheirodon innesi) FOR BREEDING IMPROVEMENT STRATEGIES

Kusumah¹,

Soelistyowati

Alimuddin

et al. 2021

Indonesian Aquaculture Journal

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Red color coverage (RCC) is a commercial trait developed and refined to improve the appearance of many ornamental fish commodities. In neon tetra, the status of variation of RCC is not yet investigated or reported. This study aimed to analyze the RCC variation of cultured neon tetra as a basis for breeding strategies. A total of 900 neon tetras (standard length, SL, of 2.29 ± 0.16 cm) were collected from Bojongsari, Curug, and Pondok Petir fish farms located in Depok Districts, West Java. All fish were relocated and reared in a fish farm specialized in culturing neon tetra for two weeks using nine aquariums with photoperiod set up of 12 hours bright and 12 hours dark. The RCC traits were determined according to the percentages of RCC length (%LRCC), RCC width (%WRCC), and RCC area (%ARCC) and quantified using the digital image method. The result showed that the RCC varied by sex, size, and original location (P<0.05) in a low coefficient of variation (1.89%-11.41%). The RCC values in the male group were higher than that of females based on %LRCC and %ARCC parameters (P<0.05). Males had the highest %LRCC at size LXL, which was correlated with SL (r 0.25, P<0.1), of females at M size. The %LRCC values of the neon tetra population from the Bojongsari farm were higher than those from the other locations. Based on these findings, breeding strategies of the RCC traits should consider sex, size, and population (farm location) variations. Specifically for neon tetra, this strategy should be based on selecting the SL or %LRCC parameter of M for females and LXL for males.

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“…As discussed by Camelier et al . (2018), although the aforementioned subgroups help in the identification of such a species‐rich genus, potential homologies based on coloration pattern need to be evaluated in a phylogenetic framework. The relationships of H. chiribiquete among congeners is still undetermined and will probably remain so until a study based on DNA sequences can be performed.…”

Section: Discussionmentioning

confidence: 99%

A new species of Hyphessobrycon Durbin (Characiformes: Characidae) from the western Amazon basin in Colombia and Peru

García–Alzate

Lima

Taphorn³

et al. 2020

Journal of Fish Biology

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Hyphessobrycon chiribiquete n. sp. is described from the Río Caquetá drainage in Colombia and the Río Ucayali drainage in Peru, western Amazon. The new species is diagnosed from its congeners by having the following combination of characters: a conspicuous narrow midlateral stripe, starting on the sides of the body behind the opercle near the lateral line; lateral stripe overlapped anteriorly with a vertically elongated humeral blotch; inner premaxillary teeth pentacuspid; margin of anal fin falcate in mature males.

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New remarkable sexually dimorphic miniature species of Hyphessobrycon (Characiformes: Characidae) from the upper Rio Tapajós basin

Cited by 10 publications

References 40 publications

On a remarkable sexual dimorphic trait in the Characiformes related to the olfactory organ and description of a new miniature species of Tyttobrycon Géry (Characiformes: Characidae)

On a remarkable sexual dimorphic trait in the Characiformes related to the olfactory organ and description of a new miniature species of Tyttobrycon Géry (Characiformes: Characidae)

VARIATIONS OF RED COLOR COVERAGE OF CULTURED NEON TETRA (Paracheirodon innesi) FOR BREEDING IMPROVEMENT STRATEGIES

A new species of Hyphessobrycon Durbin (Characiformes: Characidae) from the western Amazon basin in Colombia and Peru

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