Topic
Rhodeus
About: Rhodeus is a research topic. Over the lifetime, 152 publications have been published within this topic receiving 3165 citations.
Papers published on a yearly basis
Papers
TL;DR: The European bitterlingRhodeussericeus Pallas is a freshwater fish belonging to the Acheilognathinae, a subfamily that has an unusual spawning symbiosis with freshwater mussels.
Abstract: The European bitterlingRhodeussericeus Pallas is a freshwater fish belonging to the Acheilognathinae, a subfamily that has an unusual spawning symbiosis with freshwater mussels. Female bitterling possess long ovipositors that they use to place their eggs onto the gills of a mussel through the mussels’ exhalant siphon. Males fertilize the eggs by releasing sperm into the inhalant siphon of the mussel. The embryos develop inside the mussel for approximately am onth, eventually leaving the mussel as actively swimming larvae. Because they use a discrete spawning site that can be readily manipulated they have recently been used in studies to understand oviposition choice with respect to mate and spawning site quality, host–parasite coevolution, alternative male mating tactics, and linking behavioural decisions with population dynamics. The current state of knowledge of bitterling reproductive ecology is reviewed and synthesized, and future directions for research on this species are proposed.
235 citations
1 Jan 1962
198 citations
TL;DR: Female oviposition choice is adaptive and minimizes individual embryo mortality in bitterling populations, and females distributed their eggs among mussels such that embryo mortalities conformed to the predictions of an ideal free distribution model.
Abstract: Choice of a site for oviposition can have fitness consequences. We investigated the consequences of female oviposition decisions for offspring survival using the bitterling, Rhodeus sericeus, a freshwater fish that spawns inside living unionid mussels. A field survey of nine bitterling populations in the Czech Republic revealed a significantly lower rate of release of juvenile bitterling from Anodonta cygnea compared to three other mussel species. A field experiment demonstrated that female bitterling show highly significant preferences for spawning in A. anatina, Unio pictorum, and U. tumidus. Within a species, female bitterling avoided mussels containing high numbers of bitterling embryos. Mortality rates of bitterling embryos in mussels were strongly density dependent and the strength of density dependence varied significantly among mussel species. Female preferences for mussels matched survival rates of embryos within mussels and females distributed their eggs among mussels such that embryo mortalities conformed to the predictions of an ideal free distribution model. Thus, female oviposition choice is adaptive and minimizes individual embryo mortality.
104 citations
TL;DR: It is shown that females of a freshwater fish, the European bitterling, Rhodeus sericeus, base their mate choice on multiple traits that differ in their reliability as indicators of expected reproductive success and are used at different stages of the decision process.
Abstract: In many taxa females appear to base their mate choice on multiple traits. But the relative importance of different traits in mate choice has rarely been determined. Here we show that females of a freshwater fish, the European bitterling, Rhodeus sericeus, base their mate choice on multiple traits that differ in their reliability as indicators of expected reproductive success and are used at different stages of the decision process. The initial decision to inspect a male is based on male behavior and red coloration, whereas the final spawning decision is based on the quality of the live unionid mussel, Anodonta anatina, that the male is defending as an oviposition site. Male traits may indicate which males are worth inspecting by reflecting male quality, such as reproductive condition and genetic constitution. Male traits do not, however, reflect mussel quality, as bright males also court females vigorously toward mussels that yield a low probability of survival of the offspring. Females, on the other hand, are choosier than males in their choice of spawning site and seem to gain reliable information about the survival probability of the eggs by inspecting the mussel directly. Key words: bitterlings, mate choice, multiple ornaments, reliable signaling, resource quality, Rhodeus sericeus, sexual selection. [Behav Ecol 12:407–411 (2001)]
100 citations
TL;DR: A new genus and species is described from a tributary of the Yangtze River, in Chongqing City, China, that can be distinguished from four closely related genera, Paratanakia, Pseudorhodeus, Rhodeus, and Tanakia, by the following combination of characters.
Abstract: A new genus and species, Sinorhodeus microlepis gen. et sp. nov., is described from a tributary of the Yangtze River, in Chongqing City, China. Sinorhodeus gen. nov. can be distinguished from four closely related genera, Paratanakia, Pseudorhodeus, Rhodeus, and Tanakia, by the following combination of characters: pharyngeal teeth 0,0,4-4,0,0, longitudinal scales 41-46, white spots on dorsal-fin rays absent, a black blotch on dorsal fin in juvenile absent, and less developed wing-like yolk sac projections in larvae. Phylogenetic analysis of one mitochondrial gene and six nuclear genes supports the establishment of the new genus.
92 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 5 |
| 2020 | 5 |
| 2019 | 6 |
| 2018 | 2 |
| 2017 | 5 |
| 2016 | 6 |