Ecomorphological analyses reveal impact of land-based stressors on stock structure of two commercially important fish species (Lutjanus synagris and Haemulon plumierii) in the Caribbean

Nuñez-Vallecillo, Mayra; Rivera, Antonella; Górski, Konrad; Brante, Antonio; Benítez, Hugo A.

doi:10.1016/j.fishres.2020.105812

Cited by 1 publication

(1 citation statement)

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“…Understanding how shape interacts with ecological, genetic, biomechanical or other factors is helpful, since traditional ecologists are interested in associating different phenotypes with environmental variation. The ecomorphological approach in ichthyology has had a relevant role in understanding fish diversity [ 10 , 14 , 15 ], since fish have great phenotypic and ecological diversity, live in a wide variety of ecological niches and have complex reproductive methods and complex sets of foraging, locomotor, respiratory, reproductive and sensory structures that allow them to live in different environments [ 16 , 17 ]. This has provided a wide field for studies of the relation between environment and biological shapes [ 10 , 14 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Ecomorphology and Morphological Disparity of Caquetaia Kraussii (Perciformes: Cichlidae) in Colombia

Hernández

Villalobos-Leiva

Tobón

et al. 2022

Animals

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Understanding the interspecific morphological variability of Caquetaia kraussii (Perciformes: Cichlidae) between different localities in its distribution range is becoming essential, as this species constitutes a valuable resource for the economy and subsistence of the local human communities where it is endemic in Colombia and Venezuela. In order to develop efficient farming and handling plans for this species, a deep understanding of the factors and mechanisms generating morphological variability is crucial. This study analyzes the morphological variability of C. kraussii by using geometric morphometrics in four localities distributed between the Dique and North channels, which are part of the Bolívar department in Colombia. Likewise, the effect of environmental variables such as temperature (T°), dissolved oxygen (OD) and pH on morphological variability was analyzed using a partial least squares approach. The results show that environmental stress has an influence on ~10% of the body shape of C. kraussii, whereas ~90% of the body shape is not directly influenced by environmental parameters, suggesting an effect from stress related to sexual dimorphism. Similarly, the analyses show shape variation among localities, mainly between populations of lotic environments and those of lentic environments. This morphological disparity seems to be subject to environmental and sexual stresses in the different localities.

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