Topic
Janolus
About: Janolus is a research topic. Over the lifetime, 4 publications have been published within this topic receiving 24 citations.
Papers
1 Jan 2014
TL;DR: In this paper, the authors present new distributional data on those 15 benthic opisthobranch gastropod species that were formerly known from Chilean waters, including 12 nudibranch, 1 cephalaspidean and 2 sacoglossan species.
Abstract: The Peruvian marine invertebrate fauna is thus far poorly investigated referring to sea slugs. From recent surveys along the entire Peruvian coast we present new distributional data on those 15 benthic opisthobranch gastropod species that were formerly known from Chilean waters. Our findings include 12 nudibranch, 1 cephalaspidean and 2 sacoglossan species. These are the first records for Peru of 7 species, such as Janolus rebeccae and Hancockia schoeferti. Known distributional ranges are extended to the north for 9 species, in case of Polycera priva for more than 3000 kilometres; the latter was formerly considered as a Magellanic species endemic to southern Chilean fjords. Photographs of living specimens as well as descriptions of habitats and biological observations are given. We also present the first record of splanchnotrophid copepods from Peru, infesting the aeolid nudibranch Phidiana lottini. Some further data and discussions are provided for species with insufficient or disputed information available.
11 citations
Journal Article•
9 citations
TL;DR: The seaslug Janolus fuscus of the family Proctonotidae, which is new to the Russian fauna, was found in the Sea of Japan for the first time, and the partial sequences of the mitochondrial COI gene differed in two nucleotide substitutions, suggesting that the population that is found inThe Sea ofJapan is conspecific to the North American J.fuscus.
Abstract: The seaslug Janolus fuscus of the family Proctonotidae, which is new to the Russian fauna, was found in the Sea of Japan for the first time. A small population of this mollusk was found at the northwestern coast on a bank occupying approximately 3000 m2 of the sea bottom south of Rudnaya Bay. Data on the distribution, ecology, radula morphology, and feeding of this mollusk on the bryozoan Microporina articulata are presented. The differences between J. fuscus and similar species of the genus Janolus are discussed. The partial sequences (614 bp) of the mitochondrial COI gene differed in two nucleotide substitutions, suggesting that the population that is found in the Sea of Japan is conspecific to the North American J. fuscus.
9 citations
TL;DR: Using scanning electron microscopy, three new Ismaila Bergh, 1867 species infesting nudibranch hosts from southern Chile are described and new discoveries further broaden the range of splanchnotrophid host taxa; they are in line with earlier hypotheses of strict host specificity of Is Maila species and support Chile as a hotspot for IsmailA radiation.
Abstract: The Splanchnotrophidae are a worldwide-distributed family of endoparasitic copepods, utilising shell-less opisthobranch gastropod hosts Using scanning electron microscopy, we describe three new Ismaila Bergh, 1867 species infesting nudibranch hosts from southern Chile Ismaila volatilis spec nov infests the proctonotid Janolus sp and differs from all congeners by the size and number of dorsal bulges, the number of processes on the maxilla, and the thickness of thoracic appendages Ismaila chaihuiensis spec nov was found in the doridoidean Diaulula punctuolata (D’Orbigny, 1837) and is diagnosed by a pore situated on a prominent bulge above the labrum Ismaila genalis spec nov from a polycerid Holoplocamus papposus Odhner, 1926 host differs from its congeners in the size and form of the ventral bulges present on the head These discoveries further broaden the range of splanchnotrophid host taxa; they are in line with earlier hypotheses of strict host specificity of Ismaila species and support Chile as a hotspot for Ismaila radiation Herein, we present a key to the identification of all 14 Ismaila species In Sulawesi (tropical Indo-West Pacific), Arthurius gibbosa spec nov infests the sacoglossan Elysia macnaei Marcus, 1982 The new species differs from both congeners by the short and stubby dorsal bulges Uniquely among splanchnotrophids, long thoracic appendages are absent Arthurius Huys, 2001 thus is the morphologically most divergent genus of the Splanchnotrophidae, but it is well characterized by the loss of several mouthparts and the preference for sacoglossan hosts Currently, the distribution of the genus is limited to the Indo-West Pacific
3 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2016 | 2 |
| 2014 | 1 |
| 1996 | 1 |