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10 results for “Belonidae”
Figure 8 in First information on biology of the needlefish Tylosurus acus imperialis (Belonidae) off the Tunisian coast (Central Mediterranean)
Figure 8. - Growth curve and back calculated length at age by sex of T. a. imperialis from Tunisian coast.
Figure 2 in First information on biology of the needlefish Tylosurus acus imperialis (Belonidae) off the Tunisian coast (Central Mediterranean)
Figure 2. - Length-weight relationships of T.a. imperialis from Tunisian coast. A: Females; B: Males.
Habitat transitions alter the adaptive landscape and shape phenotypic evolution in needlefishes (Belonidae)
<p class="Normal1">Habitat occupancy can have a profound influence on macroevolutionary dynamics, and a switch in major habitat type may alter the evolutionary trajectory of a lineage. In this study we investigate how evolutionary transitions between marine and freshwater habitats affect macroevolutionary adaptive landscapes, using needlefishes (Belonidae) as a model system. We examined the evolution of body shape and size in marine and freshwater needlefishes and tested for phenotypic change in response to transitions between habitats. Using micro-computed tomographic (µCT) scanning and geometric morphometrics, we quantified body shape, size, and vertebral counts of 31 belonid species. We then examined the pattern and tempo of body shape and size evolution using phylogenetic comparative methods. Our results show that transitions from marine to freshwater habitats have altered the adaptive landscape for needlefishes and expanded morphospace relative to marine taxa. We provide further evidence that freshwater taxa attain reduced sizes either through dwarfism (as inferred from axial skeletal reduction) or developmental truncation (as inferred from axial skeletal loss). We propose that transitions to freshwater habitats produce morphological novelty in response to novel prey resources and changes in locomotor demands. We find that repeated invasions of different habitats have prompted predictable changes in morphology.</p>
Figure 4 in First information on biology of the needlefish Tylosurus acus imperialis (Belonidae) off the Tunisian coast (Central Mediterranean)
Figure 4. - Length at first maturity of females of T. a. imperialis.
Figure 1 in First information on biology of the needlefish Tylosurus acus imperialis (Belonidae) off the Tunisian coast (Central Mediterranean)
Figure 1. - Length distribution of needlefishes T. a. imperialis from Tunisian coast.
Figure 6 in First information on biology of the needlefish Tylosurus acus imperialis (Belonidae) off the Tunisian coast (Central Mediterranean)
Figure 6. - Otolith of Tylosurus acus imperialis.
Figure 5 in First information on biology of the needlefish Tylosurus acus imperialis (Belonidae) off the Tunisian coast (Central Mediterranean)
Figure 5. - Length at first maturity of males of T. a. imperialis.
Habitat transitions alter the adaptive landscape and shape phenotypic evolution in needlefishes (Belonidae)
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Systematic Identification of Needlefish (Belonidae) Species using Molecular Genetic and Morphological Markers in the Mediterranean and Black Seas
<p><span>In this study, we aimed to clarify the taxonomic status of Belonidae species distributed in the Mediterranean Sea and the Black Sea by conducting detailed genetic and morphological markers. A total of 550 needlefish samples were caught between January 2022 and January 2024.<span> </span>The data set used in the study contains a total of 171 sequences for the <em>COI</em> gene and 120 sequences for the <em>12s rRNA</em> gene from different Belonidae species, including data from GenBank. Systematic analysis of needlefish species was investigated by using sequencing of mtDNA <em>COI</em> and <em>12s rRNA</em> gene regions and morphological characters in the Turkish Marine Waters. A separate analysis of the two mitochondrial genes supported by morphological characters revealed that each species is grouped within itself. The genetic and morphological analyses showed that <em>Belone belone acus</em> and <em>Belone belone euxini</em> which are considered as the subspecies of <em>Belone belone</em> are not subspecies of the genus <em>Belone</em> and should be considered at the species level, <em>Belone belone</em>.<span> </span><em>Belone svetovidovi</em> is also considerably different from <em>Belone belone</em> and should be considered as a different species. <em>T. acus imperialis</em>, which is thought to be distributed in the Mediterranean Sea, is not a subspecies of <em>Tylosorus acus and should be revised as Tylosorus imperialis </em><span>which genetically </span>differs from<em> Tylosorus acus </em>and also other<em> Tylosorus </em><span>species</span><em> </em>at the species level<em>. </em></span></p>
Genetic dataset of Systematic Identification of Needlefish (Belonidae) Species using Molecular Genetic and Morphological Markers in the Mediterranean and Black Seas
<p>The sequences used in the study from NCBI and BOLD databases.</p>
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