Size-mediated dominance and aggressive behavior of male Japanese fluvial sculpin Cottus pollux (Pisces: Cottidae) reduce nest-site abundance and mating success of conspecific rivals

Natsumeda, Takaharu; Mori, Seiichi; Yuma, Masahide

doi:10.1007/s10164-011-0316-7

Cited by 9 publications

(4 citation statements)

References 30 publications

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“…This competition increases during the spawning season when a suitable shelter becomes also a nesting place. Larger males monopolize larger territories than smaller individuals, and even if a sufficient number of nesting places is provided, the dominants (larger males) prevent the smaller males approaching them through aggressive behaviour (Natsumeda 2001;Davey et al 2005;Natsumeda et al 2012). Gobies typically exhibit such territorial and aggressive behaviour (Miller 1984).…”

Section: Introductionmentioning

confidence: 99%

Can the presence of alien Ponto–Caspian gobies affect shelter use by the native European bullhead?

et al. 2016

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Extensive invasion of Ponto-Caspian gobies raised the question how they affect recipient ecosystems. The round and racer goby pose a threat to their native counterparts, cottid species, but the influence of other gobiids is still not sufficiently demonstrated. We experimentally assessed how monkey and western tubenose goby, two of the most widespread species across Central and Western Europe, affected time spent by bullhead in the shelter in different seasons and light conditions. Direct and indirect aggression and guarding the shelter by the fish were also checked. We observed the behaviour of single-species and mixed-species pairs in the presence of a single shelter, with bullhead as a resident and one of three species as an intruder introduced to the tank 24 h later. Neither tubenose nor monkey goby was the stronger competitor, capable of outcompeting bullhead from the shelter. Their influence on the resident bullhead was the same as that of intruding bullhead: all intruders made resident bullhead increase shelter occupancy in spring at night. Moreover, compared to the monkey goby, the tubenose goby spent more time in the shelter, occupied it similarly in both seasons, guarded it more intensely and was more aggressive. The monkey goby displayed indirect aggression more often in spring. Despite these differences, bullhead responded to the presence of both goby species similarly, especially during reproductive season.

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Section: Introductionmentioning

confidence: 99%

Can the presence of alien Ponto–Caspian gobies affect shelter use by the native European bullhead?

et al. 2016

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“…Japanese fluvial sculpin ( Cottus pollux ): Natsumeda et al. ) or males defending territory (e.g. in gibbons, Suwanvecho & Brockelman ).…”

Section: Introductionmentioning

confidence: 99%

The Dynamic of Aggression: How Individual and Group Factors Affect the Long‐Term Interspecific Aggression Between Two Sympatric Species of Dolphin

Cusick

Herzing

2014

Ethology

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Interspecific aggression, similar to intergroup conspecific aggression, has been observed in a variety of taxa. The dominant group or individual is determined by multiple aggressive events and can be influenced by the size, age, or group size of the participating individuals. Interspecific aggression between Atlantic bottlenose (Tursiops truncatus) and spotted (Stenella frontalis) dolphins, both resident and sympatric to Little Bahama Bank, the Bahamas has been consistently observed for over two decades. However, it is unclear whether one species is more dominant and little is known about the factors that influence the progression of aggression. For this study, underwater video recordings of 32 aggressive encounters composed of 451 aggressive behavioural events were analysed over a 12-yr period (1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004). These were used to describe the interspecific aggression observed and quantify which factors (the species and age class of the participants or the group size and behaviour of spotted dolphin groups) had the strongest impact on the progression and outcome of aggression. Over the long term, interspecific aggression was bidirectional with neither species being more dominant. During a single encounter, spotted dolphin group synchrony had the strongest impact on the dynamic of aggression, specifically impacting which group (1) initiated aggression, (2) the direction of aggression and (3) the occurrence of dynamic shifts or dominance reversals. This is the first study to quantify the dynamic of aggression for this population, to document bidirectional aggression and dynamic shifts during long-term interspecific aggression in free-ranging delphinids, and this study quantifies the role of synchrony during interspecific aggression using underwater observations.

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“…or they may also be factors related to the species' reproductive behaviour (social behaviour, sex ratio, relative size, etc. )-all of them related to mating success in behaviour studies [42][43][44][45][46], so specific behaviour studies (ex-situ and in-situ) should be developed in order to improve captive breeding effectiveness [47]. However, it is observed that there is a limiting factor in this step.…”

Section: Analysis Of Variation Into Phasesmentioning

confidence: 99%

First Captive Breeding Program for the Endangered Pyrenean Sculpin (Cottus hispaniolensis Bacescu-Master, 1964)

Manubens¹,

Comas²,

Valls³

et al. 2020

Water

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The strong decline of freshwater fish species in Europe implies that further ex-situ conservation plans should be implemented in the near future. The present study reflects our experience with the Pyrenean sculpin (Cottus hispaniolensis Bacescu-Mester, 1964)—a small cottid endemic to the Hispano-French Garona River basin. In recent years, the Spanish Pyrenean sculpin population has reached a limit situation. Because of that, the non-profit association ADEFFA—with support from the public administration—started the first captive breeding program for this species in 2006. Fourteen years later, this study presents the results and evaluates the different steps of the program, with the aim of discussing and improving the ex-situ conservation plans for this and other cold freshwater species. There is a description and a comparison between six consecutive phases during the captive breeding process: nesting behaviour, courtship, egg fixation, parental care (incubation), hatching and survival during juvenile development. The purposes of this project are to: (1) identify the most determining phases for a successful captive breeding; (2) identify the factors that had a major influence to the success of the critical phases; and (3) increase the number of the offspring. This study is based on thirty-three wild individuals collected from Garona River (Val d’Aran, Spanish Pyrenees). During the program, twelve couples spawned in captive conditions, with around 2300 eggs laid. Eight couples bred successfully, with 751 hatched individuals and 608 juveniles reared. The analysis of each step of the captive breeding does not reveal significant differences between phases, so it can be concluded that they are all critical at the same level. In the literature, similar study-cases of captive breeding programs identify incubation and survival phases as the most critical. Consequently, the management made for this project has probably allowed to overcome in part the main impediments described in other similar programs.

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Size-mediated dominance and aggressive behavior of male Japanese fluvial sculpin Cottus pollux (Pisces: Cottidae) reduce nest-site abundance and mating success of conspecific rivals

Cited by 9 publications

References 30 publications

Can the presence of alien Ponto–Caspian gobies affect shelter use by the native European bullhead?

Can the presence of alien Ponto–Caspian gobies affect shelter use by the native European bullhead?

The Dynamic of Aggression: How Individual and Group Factors Affect the Long‐Term Interspecific Aggression Between Two Sympatric Species of Dolphin

First Captive Breeding Program for the Endangered Pyrenean Sculpin (Cottus hispaniolensis Bacescu-Master, 1964)

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