Chromosomes of the Parasitic Isopod Anilocra Physodes

Chromosomes of the Parasitic Isopod Anilocra Physodes CHROMOSOMES OF THE PARASITIC ISOPOD ANILOCRA PHYSODES BY ROBERTO VITTURI, ELIODORO CATALANO, MARIA STELLA COLOMBA Istituto di Zoologia, Università di Palermo, Via Archirafi 18, I-90123 Palermo, Italy and LORENZO PELLERITO1) Dipartimento di Chimica Inorganica, Università di Palermo, Via Archirafi 26, I-90123 Palermo, Italy ABSTRACT Counts of mitotic chromosomes have allowed to determine 2n = 12 as the modal diploid number of Anilocra physodes. Application of the C-banding technique reveals that two hetero- chromatic blocks bordering the centromeric region occur in each chromosome. This supports the notion that the actual low chromosome number of A. physodes may have been derived through a process of Robertsonian fusion. RIASSUNTO Il valore diploide modale 2n = 12 è stato determinato per Anilocra physodes dal conteggio dei cromosomi mitotici. L'applicazione del bandeggio C ha rivelato la presenza di due blocchi eterocromatici ai bordi della regione centromerica di ciascun cromosoma. Ciò contribuisce a sostenere l'ipotesi che l'attuale basso numero di cromosomi di A. physodes possa essere derivato per un processo di fusione Robertsoniana. INTRODUCTION The order Isopoda includes free-living and parasitic species of the genera Nerocila and Anilocra (Flabellifera, Cymothoidea). Anilocra species are ectoparasi- tic on the skin and fins of fish hosts (Cheng, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crustaceana Brill

Chromosomes of the Parasitic Isopod Anilocra Physodes

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Publisher
Brill
Copyright
© 1996 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0011-216x
eISSN
1568-5403
D.O.I.
10.1163/156854096X00079
Publisher site
See Article on Publisher Site

Abstract

CHROMOSOMES OF THE PARASITIC ISOPOD ANILOCRA PHYSODES BY ROBERTO VITTURI, ELIODORO CATALANO, MARIA STELLA COLOMBA Istituto di Zoologia, Università di Palermo, Via Archirafi 18, I-90123 Palermo, Italy and LORENZO PELLERITO1) Dipartimento di Chimica Inorganica, Università di Palermo, Via Archirafi 26, I-90123 Palermo, Italy ABSTRACT Counts of mitotic chromosomes have allowed to determine 2n = 12 as the modal diploid number of Anilocra physodes. Application of the C-banding technique reveals that two hetero- chromatic blocks bordering the centromeric region occur in each chromosome. This supports the notion that the actual low chromosome number of A. physodes may have been derived through a process of Robertsonian fusion. RIASSUNTO Il valore diploide modale 2n = 12 è stato determinato per Anilocra physodes dal conteggio dei cromosomi mitotici. L'applicazione del bandeggio C ha rivelato la presenza di due blocchi eterocromatici ai bordi della regione centromerica di ciascun cromosoma. Ciò contribuisce a sostenere l'ipotesi che l'attuale basso numero di cromosomi di A. physodes possa essere derivato per un processo di fusione Robertsoniana. INTRODUCTION The order Isopoda includes free-living and parasitic species of the genera Nerocila and Anilocra (Flabellifera, Cymothoidea). Anilocra species are ectoparasi- tic on the skin and fins of fish hosts (Cheng,

Journal

CrustaceanaBrill

Published: Jan 1, 1996

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