The events which trigger the activation of nematocytes are still poorly understood, and no evidence has been presented so far on either the nature of the activatory signal for the nematocyte or the transduction mechanism. In this paper, we present evidence for a role of NO in the discharge of acontial nematocytes. A citrulline-forming enzymatic activity, significantly decreased by the NO syntha...

The variety of reproductive processes and modes among coral species reflects their extraordinary regeneration ability. Scleractinians are an established example of clonal animals that can exhibit a mixed strategy of sexual and asexual reproduction to maintain their populations. This study provides the first description of the annual reproductive cycle and embryogenesis of the temperate species ...

The nature and role of potassium (K) and water transport mediating hyposmotically-induced regulatory volume decrease (RVD) were studied in nematocytes dissociated with 605 mM thiocyanate from acontia of the Anthozoan Aiptasia diaphana. Cell volume and hence RVD were calculated from the inverse ratios of the cross sectional areas of nematocytes (A/A(o)) measured before (A(o)) and after (A) chall...

Morphological identification of the majority Zygaenidae species in Eastern Mediterranean Region Turkey was undertaken and a phylogenetic tree these generated. Sampling performed between May September 2017 2018 Adana, Hatay, Kahramanmaraş, Mersin Osmaniye Provinces. This area is zoogeographical junction central Anatolia Levant. The were collected by sweep net visual control methods. Thirteen ide...

We examined the response of microbial communities in model sea anemone Exaiptasia diaphana (Aiptasia) to short-term thermal elevation. Through 16S rRNA gene sequencing, we characterized microbiomes symbiotic (with algal symbionts) and aposymbiotic (bleached) anemones under ambient (27°C) heat-stressed (34°C) conditions for 8-10 days, using both replicated endpoint non-replicated time-course app...

Abstract An integrated approach using morphological and genetic data is needed to disentangle taxonomic uncertainties affecting the hydrozoan families Sphaerocorynidae Zancleopsidae. Here we used this accurately characterise species in these families, identify previously unknown polyp stages of genera Euphysilla Zancleopsis , which were originally described exclusively based on medusa stages, d...

Lymnaeids in nature are subjected to temperature fluctuations that may have an influence on the shedding of cercariae. Thus, experimental infections of Lymnaea truncatula by Paramphistomum daubneyi were performed to determine whether a sudden fall in temperature--daily dipping of infected snails into spring water at 14-15 degrees C, or at 6-8 degrees C--followed by its increase at 20 degrees C ...