Does otolith macrostructure record environmental or biological events? The case of black hake (Merluccius polli and Merluccius senegalensis)

Rey, J.; Fernández-Peralta, L.; Esteban, Alba; García-Cancela, R.; Salmerón, F.; Puerto, Miguel Ángel; Piñeiro, C.

doi:10.1016/j.fishres.2011.10.010

Cited by 14 publications

(6 citation statements)

References 23 publications

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“…Merluccius polli males, with lower gonad requirements than females, possibly require extra energy during mating migrations, thus explaining trade‐off delays related to females. When the results of this study were contrasted with those concerning the otolith macrostructure patterns identified for both M. senegalensis and M. polli (Rey et al , ), they revealed some resemblances between the condition and growth patterns. Extended slowdowns in growth were reported only for the deep‐water M .…”

Section: Discussioncontrasting

confidence: 71%

“…The shallow-water M. senegalensis shows greater spatial (depth) and temporal (year) variability in its energy reserves than the deep-water M. polli. Conversely, growth analysis of these species (Rey et al, 2012) suggests that M. polli is more affected by internal or external events than M. senegalensis. The fact that both species coexist in a wide bathymetric range and that most oceanographic events are common to both species pinpoints the way in which their responses differ.…”

Section: Discussionmentioning

confidence: 91%

“…polli . Conversely, growth analysis of these species (Rey et al , ) suggests that M . polli is more affected by internal or external events than M .…”

Section: Discussionmentioning

confidence: 99%

“…This study was carried out to identify the different strategies employed by two sympatric Merluccius species (M. senegalensis and M. polli) that enable them to successfully cohabit in such a variable environment. Supposedly, these species have comparable biological features and are managed as a single stock, but recent studies have demonstrated the existence of significant differences in their reproductive (Fernández-Peralta et al, 2011), growth (Rey et al, 2012) and distribution patterns (Ramos & Fernández-Peralta, 1995;FAO, 2011). The plasticity of the responses, changes in development, behaviour or energy allocation, potentially allows individuals to match their phenotypes to spatial or temporal variations in their abiotic and biotic environments (Reed et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…M. polli). Recent studies focusing on reproduction (Fernández-Peralta et al, 2011), growth (Rey et al, 2012) and distribution (Ramos & Fernández-Peralta, 1995;FAO, 2011) of M. senegalensis and M. polli in the study area have shown some disparities between the two species, although further research is needed to clearly define each species' life strategy, key information to ensure sustainable resource management. Here, it is hypothesized that the spatio-temporal variability of the oceanographic scenarios induced by the North Atlantic climate may affect the energy allocation strategy of M. senegalensis and M. polli in a different way.…”

Section: Introductionmentioning

confidence: 98%

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Contrasting energy allocation strategies of two sympatric Merluccius species in an upwelling system

Rey

Fernández-Peralta

Quintanilla

et al. 2015

Journal of Fish Biology

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This study investigated the somatic growth and energy allocation strategy of two sympatric hake species (Merluccius polli and Merluccius senegalensis), coexisting under the strong influence of the Mauritanian upwelling. The results revealed that ontogeny, bathymetry, geography and reproduction shaped the differences found between the condition dynamics of the two species. Aside from species-specific differences, individuals were observed in better condition in the northernmost area (more influenced by the permanent upwelling) and in the deepest waters, probably the most favourable habitat for Merluccius spp. Both species also displayed contrasting trade-offs in energy allocation probably due to the dissimilarity of their habitats, which favours the existence of divergent adaptive strategies in response to different ontogenic requirements. It was hypothesized that M. polli invests in mass and energy reserves while sacrificing growth, as larger sizes may not provide an ecological advantage in a deeper and more stable environment. Moreover, M. senegalensis capitalizes on a steady growth without major disruptions, enabling earlier spawning at the expense of a lower somatic mass, which is fitting to a less stable shallower environment. This study sheds new light on differences in the biological traits and life strategies of Merluccius spp., which permit their overlap in a complex upwelling system and may contribute to the long-lasting scientific-based management of these species.

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Section: Discussioncontrasting

confidence: 71%

Section: Discussionmentioning

confidence: 91%

“…polli . Conversely, growth analysis of these species (Rey et al , ) suggests that M . polli is more affected by internal or external events than M .…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

Contrasting energy allocation strategies of two sympatric Merluccius species in an upwelling system

Rey

Fernández-Peralta

Quintanilla

et al. 2015

Journal of Fish Biology

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Overlapping Distribution of Two Sympatric Species: The Case of Black Hakes, Merluccius polli Cadenat 1960 and Merluccius senegalensis Cadenat 1960, Off Mauritania

Fernández-Peralta

Quintanilla

Rey

2017

Deep-Sea Ecosystems Off Mauritania

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Identifying major events in two sturgeons’ life using pectoral fin spine ring structure: exploring the use of a non-destructive method

Bakhshalizadeh

Bani

Abdolmalaki

et al. 2017

Environ Sci Pollut Res

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Maturation is one of the most important life history traits that influences on many ecological characteristics of animals. This study aimed to describe the indirect distinguish of first reproduction and habitat shift (transition from the pelagic to benthic environment), using the width of translucent and annuluses of the pectoral fin spine of two sturgeon species, Persian sturgeon, Acipenser persicus, and starry sturgeon, Acipenser stellatus. Interpretation of growth bands in pectoral fin sections was done objectively using direct reading of thin sections and image analysis. The results showed that changes in the profiles of translucent and annuluses occurred at the time of habitat shift and first reproduction. Females of both sturgeons move to the deeper waters earlier than males, which can be considered as strategy for the prolonged gonad development of female individuals. Estimated age at maturity for A. persicus (9 years for female and 7 years for male) was higher than A. stellatus (7 years for female and 6 years for male), which coincide with abrupt reduction in annuli width. Marks of habitat shift and first reproduction in the pectoral fin spine are species-specific characters and enable life history traits to be identified.

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Does otolith macrostructure record environmental or biological events? The case of black hake (Merluccius polli and Merluccius senegalensis)

Cited by 14 publications

References 23 publications

Contrasting energy allocation strategies of two sympatric Merluccius species in an upwelling system

Contrasting energy allocation strategies of two sympatric Merluccius species in an upwelling system

Overlapping Distribution of Two Sympatric Species: The Case of Black Hakes, Merluccius polli Cadenat 1960 and Merluccius senegalensis Cadenat 1960, Off Mauritania

Identifying major events in two sturgeons’ life using pectoral fin spine ring structure: exploring the use of a non-destructive method

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