1 Lifestyles and Feeding Biology The Natural History of the Crustacea , Volume 2 EDITED BY MARTIN THIEL AND LES WATLING

نویسنده

  • Antonio Baeza
چکیده

The adoption of a symbiotic lifestyle is a major adaptation in the marine realm. Protection against environmental stress, escape from natural enemies, and nourishment are the major benefits obtained by symbiotic crustaceans from hosts. Hosts also represent a mating and nursery ground for symbiotic crustaceans. Costs and/or benefits experienced by hosts are diverse but may be subtle and challenging to measure. Costs suffered by hosts include physical injury, reduced feeding/growth rates, decreased fecundity and lifespan, and feminization, including castration, of male hosts. Some rhizocephalans are capable of altering host behaviors. The life cycles of symbiotic crustaceans vary widely. At one extreme, juveniles recruit directly into hosts from parental brooding chambers in crustaceans with direct/abbreviated development. Many symbiotic crustaceans with indirect development spend their larval life in the pelagic environment and establish themselves in/on their hosts during the first post-larval stage. At another extreme, the most complex life cycles occur in parasitic copepods and rhizocephalan cirripeds. Such life cycles involve one or two hosts and subtle or considerable changes in body morphology relative to that of their closest free-living relatives. The species richness of various symbiotic clades is higher than that of their closest free-living relatives. Whether the symbiotic lifestyle favors adaptive radiations in crustaceans is an outstanding and open question.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Epidemiological surveillance of leishmaniasis in the European Union: operational and research challenges.

Surveillance and outbreak reports Re-emergence of leishmaniasis in Spain: community outbreak in Madrid, Spain, 2009 to 2012 5 by A Arce, A Estirado, M Ordobas, S Sevilla, N García, L Moratilla, S de la Fuente, AM Martínez, AM Pérez, E Aránguez, A Iriso, O Sevillano, J Bernal, F Vilas Imported leishmaniasis in the Netherlands from 2005 to 2012: epidemiology, diagnostic techniques and sequence-ba...

متن کامل

First case of Echinococcus vogeli infection imported to the Netherlands, January 2013.

In January 2013 in the Netherlands, a man in his 50s from Suriname underwent hemihepatectomy because of a cystic liver mass, assumed to be a cystadenoma. Pathology revealed an echinococcal infection. PCR analysis of cyst material identified Echinococcus vogeli, causing polycystic hydatid disease. This echinococcus species is rarely diagnosed outside South America. The patient received adequate ...

متن کامل

On the H-triangle of generalised nonnesting partitions

With a crystallographic root system Φ, there are associated two Catalan objects, the set of nonnesting partitions NN(Φ), and the cluster complex ∆(Φ). These possess a number of enumerative coincidences, many of which are captured in a surprising identity, first conjectured by Chapoton. We prove this conjecture, and indicate its generalisation for the Fuß-Catalan objects NN (Φ) and ∆(Φ), conject...

متن کامل

Dynamic attachment of Chlorovirus PBCV-1 to Chlorella variabilis.

Chloroviruses infect their hosts by specifically binding to and degrading the cell wall of their algal hosts at the site of attachment, using an intrinsic digesting enzyme(s). Chlorovirus PBCV-1 stored as a lysate survived longer than virus alone, suggesting virus attachment to cellular debris may be reversible. Ghost cells (algal cells extracted with methanol) were used as a model to study rev...

متن کامل

Imported leishmaniasis in the Netherlands from 2005 to 2012: epidemiology, diagnostic techniques and sequence-based species typing from 195 patients.

Leishmaniasis is an imported disease in the Netherlands. We report data for the period between 2005 and 2012, on clinical presentation, country where leishmaniasis was acquired, and causative species, for 195 civilian and military patients who had travelled abroad. Most patients were affected by cutaneous leishmaniasis (CL) (n=185 patients), while visceral leishmaniasis (VL) (n=8 patients) and ...

متن کامل

ذخیره 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 نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015