Evolution: How a Barnacle Came to Parasitise a Shark
نویسنده
چکیده
A new study on a parasitic barnacle that lives on a deep sea shark found that its closest living relatives are rocky shore barnacles. The findings provide insight into barnacle phylogeny and raise new questions about the evolution of parasitism.
منابع مشابه
On the Origin of a Novel Parasitic-Feeding Mode within Suspension-Feeding Barnacles
In his monograph on Cirripedia from 1851, Darwin pointed to a highly unusual, plateless, and most likely parasitic barnacle of uncertain phylogenetic affinity. Darwin's barnacle was Anelasma squalicola, found on deep-water sharks of the family Etmopteridae, or lantern sharks. The barnacle is uncommon and is therefore rarely studied. Recent observations by us have shown that they occur at an unu...
متن کاملCan Social Contagion Help Global Health ‘Jump the Shark’?; Comment on “How to Facilitate Social Contagion?”
The instrumental use of social networks has become a central tenet of international health policy and advocacy since the Millennium project. In asking, ‘How to facilitate social contagion?’, Karl Blanchet of the London School of Hygiene and Tropical Medicine therefore reflects not only on the recent success, but also hints to growing challenges; the tactics of partnerships, alliances and platfo...
متن کاملGrowth modelling of milk shark, Rhizoprionondon acutus (Ruppel, 1837) from waters of the Persian Gulf and Oman Sea (Hormozgan province)
This study aimed to investigate Growth modelling of the milk shark (Rhizoprionondon acutus Ruppel, 1837) from October 2019 until march 2021 for 18 months in northern waters of the Persian Gulf and the Oman Sea (Hormozgan Province). Overall, 317 shark samples of R. acutus including 137 males and 180 females were weighted. Results of the present work indicated that length-frequency distribution o...
متن کاملContraction-band Formation in Barnacle Myofibrils.
Contractions induced by adenosine triphosphate, in myofibrils isolated from the barnacle, Balanus aquilia, were observed with a phase microscope. The formation of contraction bands was well under way before the A-band came into contact with the Z-membrane. This is in disagreement with the hypothesis that contraction bands are formed when the A-band pushes against the Z-membrane.
متن کاملThe immunomodulatory effects of shark cartilage on the mouse and human immune system
Background: Sharks get cancer rarely. A major difference between these animals and other species is that sharks have a great amount of cartilaginous tissue. Immunomodulatory effects of the cartilage of some species (cow) have been proved. Because the immune system has a major role in the defense of the body against cancer, we studied the effects of shark cartilage on the mouse and human immune...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Current Biology
دوره 24 شماره
صفحات -
تاریخ انتشار 2014