Results 51 to 60 of about 17,957 (220)
Diversity, 2022 Despite a rich taxonomic literature on the symbionts of ascidians, the nature of these symbioses remains poorly understood. In the Egyptian Red Sea, the solitary ascidian Phallusia nigra hosted a symbiotic amphipod and four copepod species, with ...
Edwin Cruz-Rivera +3 more
doaj +1 more source
Suppression of cell-spreading and phagocytic activity on nano-pillared surface: in vitro experiment using hemocytes of the colonial ascidian Botryllus schlosseri. [PDF]
, 2015 Nano-scale nipple array on the body surface has been described from various invertebrates including endoparasitic and mesoparasitic copepods, but the functions of the nipple array is not well understood.
Ballarin, Loriano +5 more
core
Geometry of wave propagation on active deformable surfaces [PDF]
, 2018 Fundamental biological and biomimetic processes, from tissue morphogenesis to soft robotics, rely on the propagation of chemical and mechanical surface waves to signal and coordinate active force generation. The complex interplay between surface geometry
Dunkel, Jörn +2 more
core +2 more sources
Ascidians Collected in Tanzania
Journal of East African Natural History, 1997 Ascidians were collected in Tanzania in January 1996 by SCUBA diving. Among 31 species reported here, nine are new. Several species were also recently collected in Mozambique. Full descriptions are given with figures and colour plates. The present collection of Tanzanian ascidians significantly increases the number of species known in the tropical ...
Monniot, Françoise, Monniot, Claude
openaire +2 more sources
The Embryonic Development of the Cotylean Polyclad Phrikoceros jannetae
Acta Zoologica, EarlyView.ABSTRACT Polyclads exhibit distinct developmental modes ranging from direct to indirect development, with several transitional stages also recognised. The existence of an indirect developmental mode in polyclads with a planktonic life history stage in the form of a free‐swimming larva is unique among all free‐living flatworms and makes polyclads a ...
Mehrez Gammoudi +6 more
wiley +1 more source
Genome-wide survey of miRNAs and their evolutionary history in the ascidian, Halocynthia roretzi
BMC Genomics, 2017 Background miRNAs play essential roles in the modulation of cellular functions via degradation and/or translation attenuation of target mRNAs. They have been surveyed in a single ascidian genus, Ciona.
Kai Wang +4 more
doaj +1 more source
From Development To Evolution: The Re-Establishment Of The Alexander Kowalevsky Medal [PDF]
, 2002 The Saint Petersburg Society of Naturalists has reinstated the Alexander O. Kowalevsky Medal. This article announces the winners of the first medals and briefly reviews the achievements of A.O.
Gilbert, Scott F., Mikhailov, A. T.
core +1 more source
First occurrence of the non-native bryozoan Schizoporella japonica Ortmann (1890) in Western Europe [PDF]
, 2014 Schizoporella japonica Ortmann was described from Japan but was subsequently introduced on Pacific oysters to the Pacific coast of North America, where it is now well established. In this paper we record it for the first time in European waters.
Holt, Rohan +4 more
core +1 more source
Ascidian Sperm Lysin System [PDF]
Zoological Science, 2002 Fertilization is a precisely controlled process involving many gamete molecules in sperm binding to and penetration through the extracellular matrix of the egg. After sperm bind to the extracellular matrix (vitelline coat), they undergo the acrosome reaction which exposes and partially releases a lytic agent called "lysin" to digest the vitelline coat ...
openaire +2 more sources
Fisheries Management and Ecology, EarlyView.ABSTRACT Shore‐based observers are increasingly being used in place of at‐sea observers to monitor and sample commercial fisheries catch. However, few evaluations assess whether these programs meet their stated goals or how to optimize them, and industry data are rarely tested for accuracy despite serving as the foundation for catch accounting. Using a
Christian Gredzens +2 more
wiley +1 more source