Reproductive traits of <i>Gobius niger</i> (Teleostei: Pisces) following a salinity stress: is it really a sedentary lagoon species?

Pampoulie, Christophe; Priour, F.; Bouchereau, Jean-Luc; Rosecchi, E.; Crivellì, Alain J.

doi:10.1017/s0025315499001186

Cited by 14 publications

(10 citation statements)

References 2 publications

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“…During the winter, 1993–94, salinity fell from 15 to 5 g L −1 in the Vaccarès in a few days, following once in a 100‐year floods leading to massive inflows of freshwater from the river (Rosecchi et al ., 1997). Salinity remained around 5 g L −1 in the Vaccarès until the end of 1997 (Pampoulie et al ., 1999).…”

Section: Methodsmentioning

confidence: 99%

Can life‐history traits predict the fate of introduced species? A case study on two cyprinid fish in southern France

2001

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1. The ecological and economic costs of introduced species can be high. Ecologists try to predict the probability of success and potential risk of the establishment of recently introduced species, given their biological characteristics. 2. In 1990 gudgeon, Gobio gobio, were released in a drainage canal of the Rhône delta of southern France. The Asian topmouth gudgeon, Pseudorasbora parva, was found for the first time in the same canal in 1993. Those introductions offered a unique opportunity to compare in situ the fate of two closely related fish in the same habitat. 3. Our major aims were to assess whether G. gobio was able to establish in what seemed an unlikely environment, to compare populations trends and life‐history traits of both species and to assess whether we could explain or could have predicted our results, by considering their life‐history strategies. 4. Data show that both species have established in the canal and have spread. Catches of P. parva have increased strongly and are now higher than those of G. gobio. 5. The two cyprinids have the same breeding season and comparable traits (such as short generation time, small body, high reproductive effort), so both could be classified as opportunists. The observed difference in their success (in terms of population growth and colonization rate) could be explained by the wider ecological and physiological tolerance of P. parva. 6. In conclusion, our field study seems to suggest that invasive vigour also results from the ability to tolerate environmental changes through phenotypic plasticity, rather than from particular life‐history features pre‐adapted to invasion. It thus remains difficult to define a good invader simply on the basis of its life‐history features.

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Section: Methodsmentioning

confidence: 99%

Can life‐history traits predict the fate of introduced species? A case study on two cyprinid fish in southern France

2001

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“…Individuals frequently enter brackish lagoons and estuaries (Whitehead et al, 1986;Joyeux et al, 1991aJoyeux et al, , b, 1992Pampoulie et al, 1999) and the species is widespread in the eastern Atlantic, Baltic, Mediterranean and Black Sea (Whitehead et al, 1986;Gandolfi et al, 1991). A maximum total length (L T ) of 16·5 cm and age of 5 years have been reported for open sea populations (Bouchereau & Guelorget, 1998), but smaller size and shorter life span have been observed in the Venetian Lagoon (North Adriatic Sea, Italy) (De Girolamo, 1994).…”

Section: Study Speciesmentioning

confidence: 99%

Alternative male mating tactics in Gobius niger

Mazzoldi

Rasotto

2002

Journal of Fish Biology

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In the field, parental males of the black goby Gobius niger were always>9 cm L T , showed a conspicuous elongation of the first dorsal fin, and were darkly coloured. Larger parental males did not occupy larger nests or obtain more eggs, suggesting that over a threshold size reproductive success was not correlated with male size. The mating system was polygynous with different egg clutches simultaneously present in a nest. Smaller sexually mature males were observed around and inside nests in which spawning was occurring. These opportunistic males ranged in body size between 6 to 8 cm L T . In contrast to parental males, they did not show an exaggeration of the first dorsal fin and were cryptically coloured, thus resembling small females in their external morphology. Aquarium experiments confirmed that smaller males perform a sneaking behaviour, releasing sperm when parental males spawn. As a consequence, it is possible to define three male types: type I are small, without an elongated dorsal fin and adopt a sneaking mating tactic; type III are large, have a pronounced elongation of the dorsal fin and perform parental behaviour; type II are intermediate both in size and elongation of the first dorsal fin and behave as either as sneakers or, possibly, as parental males according to nest availability and male competition.

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“…This fits with the more general ecological characteristics of the two species: the black goby shows a more pronounced marine life style than the grass goby, as also indicated by both the geographical distribution and habitat preference of these species with the black goby occurring also in the open sea (Atlantic and Mediterranean coasts down to 70 m depth; Miller, 1986) and the grass goby being more specialized for brackish, shallow water environments, such as the Adriatic lagoons and the Black Sea (Miller, 2004). Further, the black goby exhibits also a more pronounced migratory behaviour (Pampoulie et al , 1999) which would imply higher reserves in the muscle, as observed in salmonids (Jonsson & Jonsson, 1997).…”

Section: Discussionmentioning

confidence: 92%

Comparative energy allocation in two sympatric, closely related gobies: the black goby Gobius niger and the grass goby Zosterisessor ophiocephalus

Fiorin¹,

Malavasi²,

Franco³

et al. 2007

Journal of Fish Biology

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Seasonal energy allocation of lipid reserves into different body tissues was analysed comparatively in two sympatric, closely related gobies: the grass goby Zosterisessor ophiocephalus and the black goby Gobius niger. Lipid reserves were measured in liver, muscle and ovary and compared between the two species within a given sex and seasonal period (reproductive v. nonreproductive). Furthermore, temporal patterns of lipid reserves were investigated in the two species in relation to gonado-somatic and liver-somatic indices, as well as the relationship between size and lipid content. Results showed that the grass goby allocated more lipid reserves in reproduction while the black goby accumulated more reserves in liver and muscle, at a given size, although the temporal patterns of lipid accumulation and depletion were basically similar. Results are discussed in the light of life-history theories, taking into account both adaptation and evolutionary constraints.

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Reproductive traits of Gobius niger (Teleostei: Pisces) following a salinity stress: is it really a sedentary lagoon species?

Cited by 14 publications

References 2 publications

Can life‐history traits predict the fate of introduced species? A case study on two cyprinid fish in southern France

Can life‐history traits predict the fate of introduced species? A case study on two cyprinid fish in southern France

Alternative male mating tactics in Gobius niger

Comparative energy allocation in two sympatric, closely related gobies: the black goby Gobius niger and the grass goby Zosterisessor ophiocephalus

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