The genus Anguilla Schrank, 1798: current state of knowledge and questions

The genus Anguilla Schrank, 1798: current state of knowledge and questions The freshwater eels of the genus AnguillaSchrank are widely distributed. They have beenconsidered for a long time to all have acatadromous spawning strategy. However, in arecent work Tsukamoto et al. (2002)considered that catadromy should be seen asfacultative. They all have a long oceaniclarval stage known as the leptophalus stage. Alarge number of studies on their ecology,biology, and physiology exist but littleattention has been focused on their systematicsand species-relationships. Ege (1939)described 19 species and sub-species based onmorphometric data. Castle and Williamson (1974)made A. ancestralis a synonym of A.celebesensis. Morphological characters,however, have limitations as taxonomiccharacters because they overlapped in mostspecies. Biochemical characters, such asmt-DNA, are more informative. Dijkstra andJellyman (1999) found no genetic differencesbetween A. australis australis and A. a. schmidtti, and now 15 species arewidely recognized. Phylogenetic studies(Aoyama and Tsukamoto, 1997) suggestdescendant-ancestor relationships betweenAtlantic and Pacific eels, respectively. Themost likely dispersal route for the Atlanticeels from the Pacific appears to have beenthrough the Tethys Sea. Two species are foundin the Atlantic: A. anguilla and A.rostrata. They both spawn in the Sargasso Sea,but differ in morphometric and genetic traits,and are considered as two separate species witha relatively recent evolutionary divergence.The purpose of this paper is to presentknowledge and questions about the life history,taxonomy, and evolution of this mysteriousgenus. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Reviews in Fish Biology and Fisheries Springer Journals

The genus Anguilla Schrank, 1798: current state of knowledge and questions

Loading next page...
 
/lp/springer_journal/the-genus-anguilla-schrank-1798-current-state-of-knowledge-and-adu3t18I9i
Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2003 by Kluwer Academic Publishers
Subject
Life Sciences; Freshwater & Marine Ecology; Zoology
ISSN
0960-3166
eISSN
1573-5184
D.O.I.
10.1023/B:RFBF.0000033072.03829.6d
Publisher site
See Article on Publisher Site

Abstract

The freshwater eels of the genus AnguillaSchrank are widely distributed. They have beenconsidered for a long time to all have acatadromous spawning strategy. However, in arecent work Tsukamoto et al. (2002)considered that catadromy should be seen asfacultative. They all have a long oceaniclarval stage known as the leptophalus stage. Alarge number of studies on their ecology,biology, and physiology exist but littleattention has been focused on their systematicsand species-relationships. Ege (1939)described 19 species and sub-species based onmorphometric data. Castle and Williamson (1974)made A. ancestralis a synonym of A.celebesensis. Morphological characters,however, have limitations as taxonomiccharacters because they overlapped in mostspecies. Biochemical characters, such asmt-DNA, are more informative. Dijkstra andJellyman (1999) found no genetic differencesbetween A. australis australis and A. a. schmidtti, and now 15 species arewidely recognized. Phylogenetic studies(Aoyama and Tsukamoto, 1997) suggestdescendant-ancestor relationships betweenAtlantic and Pacific eels, respectively. Themost likely dispersal route for the Atlanticeels from the Pacific appears to have beenthrough the Tethys Sea. Two species are foundin the Atlantic: A. anguilla and A.rostrata. They both spawn in the Sargasso Sea,but differ in morphometric and genetic traits,and are considered as two separate species witha relatively recent evolutionary divergence.The purpose of this paper is to presentknowledge and questions about the life history,taxonomy, and evolution of this mysteriousgenus.

Journal

Reviews in Fish Biology and FisheriesSpringer Journals

Published: Jan 15, 2005

References

  • A new molecular phylogenetic hypothesis for the evolution of freshwater eels
    Bastrop, R.; Strelhow, B.; Jurss, K.; Sturmbauer, C.
  • Genetic control and variability of phosphoglucose isomerase in eels from the Atlantic ocean and the Mediterranean sea
    Comparini, A.; Rizzotti, M.; Rodino, E.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from
Google Scholar,
PubMed
Create lists to
organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off