Phylogenetic Relationships of the North American Sturgeons (Order Acipenseriformes) Based on Mitochondrial DNA Sequences

Krieger, Jeannette; Fuerst, Paul A.; Cavender, Ted M.

doi:10.1006/mpev.1999.0743

Cited by 33 publications

(26 citation statements)

References 41 publications

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“…Moreover, paddlefish are close relatives of the sturgeons [13]. According to the analysis of the combined gene sequences, it was suggested that paddlefish even occupies a basal placement in regard to sturgeons [16]. It was confirmed that the early development in American paddlefish is very similar to that reported for sturgeons [4,8].…”

Section: Discussionsupporting

confidence: 69%

Comparative anatomy of pectoral girdle and pectoral fin in Russian sturgeon and American paddlefish

2016

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Section: Discussionsupporting

confidence: 69%

Comparative anatomy of pectoral girdle and pectoral fin in Russian sturgeon and American paddlefish

2016

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“…Numerous papers on fish phylogeny clearly show that Acipenseriformes are an ancient and relict group (Birstein and DeSalle 1998;Inoue et al 2003;Krieger et al 2000;Ludwig et al 2001;Nishida and Miya 2005;Robles et al 2004). For the resolution of controversies over relationships and for drawing conclusions on phylogeny, diverse studies including those providing morphological evidence from oogenesis are useful.…”

Section: Introductionmentioning

confidence: 97%

Possible participation of mitochondria in lipid yolk formation in oocytes of paddlefish and sturgeon

Żelazowska

Kilarski

2007

Cell Tissue Res

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The ovary of paddlefish and sturgeons (Acipenseriformes) is composed of discrete units: the ovarian nests and ovarian follicles. The ovarian nests comprise oogonia and numerous early dictyotene oocytes surrounded by somatic prefollicular cells. Each ovarian follicle consists of a spherical oocyte and a layer of follicular cells situated on a thick basal lamina, encompassed by thecal cells. The cytoplasm of previtellogenic oocytes is differentiated into two distinct zones: the homogeneous and granular zones. The homogeneous cytoplasm is organelle-free, whereas the granular cytoplasm contains numerous organelles, including mitochondria and lipid droplets. We have analyzed the cytoplasm of early dictyotene and previtellogenic oocytes ultrastructurally and histologically. In the cytoplasm of early dictyotene oocytes, two morphologically different types of mitochondria can be distinguished: (1) with well-developed cristae and (2) with distorted and fused cristae. In previtellogenic oocytes, the mitochondria of the second type show various stages of cristae distortion; they contain and release material morphologically similar to that of lipid droplets and eventually degenerate. This process of mitochondrial transformation is accompanied by an accumulation of lipid droplets that form a single large accumulation (lipid body) located in the vicinity of the oocyte nucleus (germinal vesicle). The lipid body eventually disperses in the oocyte center. The possible participation of these mitochondria in the formation of oocyte lipid droplets is discussed.

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“…Firstly, sturgeons are living fossils in which the rate of evolutionary change appears to be very low, not only within vertebrates in general but even within fish (Krieger et al, 2000;De la Herrán et al, 2001;Krieger and Fuerst, 2002;Robles et al, 2004). This characteristic to some extent hampers the use of molecular data for inter-and intraspecies differentiation of sturgeons.…”

Section: Techniques For Caviar Identificationmentioning

confidence: 98%

Identification of Sturgeon Caviar Using DNA Markers

Rejón

Robles

Herrán

et al. 2009

Biology, Conservation and Sustainable Development of Sturgeons

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The meat and, above all, the caviar from sturgeons have been gastronomic emblems of delicacy from time immemorial. When sturgeons were abundant, caviar was marketed primarily from three species (Huso huso, Acipenser gueldenstaedtii and A. stellatus) mostly from the Caspian Sea. However, these are not the only species of sturgeons used traditionally to produce quality caviar, nor is the Caspian its only geographic origin. For example, caviar from sturgeons belonging to the species A. sturio or A. naccarii captured in the Guadalquivir River (southern Spain) gained renown in the 1960s, winning prizes at world fairs. Now, when sturgeons are almost disappearing all over the world, the caviar trade has become far more complex. In fact, practically all sturgeon species can produce quality caviar, not only in the wild (in steady decline) but also in fish farms. This scenario makes it necessary to monitor the sale of caviar at a worldwide level, and for this the application of molecular techniques based on DNA, together with others, can be of great use. In this chapter, we present two types of DNA markers for this purpose: some, especially nuclear-DNA markers, indicate qualitative differences between the different species (presence/ absence of these markers); and others, particularly mitochondrial-DNA, indicate differences in certain bases of nucleotide sequences. In addition, sturgeons produce interspecific hybrids. Consequently, nuclear markers along with mitochondrial ones are needed for accurately identifying the species responsible for a given caviar.

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Phylogenetic Relationships of the North American Sturgeons (Order Acipenseriformes) Based on Mitochondrial DNA Sequences

Cited by 33 publications

References 41 publications

Comparative anatomy of pectoral girdle and pectoral fin in Russian sturgeon and American paddlefish

Comparative anatomy of pectoral girdle and pectoral fin in Russian sturgeon and American paddlefish

Possible participation of mitochondria in lipid yolk formation in oocytes of paddlefish and sturgeon

Identification of Sturgeon Caviar Using DNA Markers

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