نتایج جستجو برای: syngnathus abaster
تعداد نتایج: 134 فیلتر نتایج به سال:
Syngnathid fish (pipefish and seahorses) are unique among teleost fish in that their ovary consists of a rolled sheet with germinal ridge(s) on the dorsal side running along the entire length of the sheet. A distinct difference is seen in the ovarian structure between polygamous Syngnathus pipefish and monogamous seahorses (Hippocampus spp.), the former having one germinal ridge and the latter ...
The genetic mating system of a sex-role-reversed pipefish ( Syngnathus typhle ): a molecular inquiry
In response to movements involving a large part of the visual field, the eyes of vertebrates typically show an optokinetic nystagmus, a response in which both eyes are tightly yoked. Using a comparative approach, this study sets out to establish whether fish with independent spontaneous eye movements show independent optokinetic nystagmus in each eye. Two fish with independent spontaneous eye m...
Abstract Coastal lagoons and other estuarine habitats are increasingly exposed to the negative effects of growing human populations with associated intensifications in nutrient loading, harmful algal blooms, pollution, habitat degradation. We examined population dynamics Gulf pipefish Syngnathus scovelli waters Indian River Lagoon, on Atlantic coast Florida. Substantial declines abundance this ...
Gyrodactylus eyipayipi sp. n. is described from the skin, gills, flute and male brood pouch of captive specimens of the greater pipefish Syngnathus acus L., collected for and maintained at the Two Oceans Aquarium in Cape Town, South Africa. It is the first marine Gyrodactylus species reported from the African continent. The new species is compared to the three known Gyrodactylus species affecti...
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