Nom du corpus

Corpus Systématique Animale

Titre du document

A new monotypic genus of neotropical freshwater sponges (Porifera-Spongillidae) and evidence of a speciation via hybridism

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Freshwater sponges
  • monotipic genera
  • hybridism
  • gemmulat reproduction
  • speciation
  • taxonomy
  • Amazonian communities
Nom du fichier dans la ressource
Eponges_v2b_0144
Auteur(s)
  • C. Volkmer-Ribeiro
Affiliation(s)
  • Museu de Ciências Naturais da Fundaçao Zoobotânica, Pôrto Alegre, RS, Brasil
Résumé

Particular characteristics of several specimens of a freshwater sponge integrating two communities of such sponges at river Juruá, Brasil, strongly indicate an hybrid origin for these specimens; Trochospongilla minuta (Potts, 1881) and Trochospongilla delicata Bonetto & de Drago, 1967 ‘sensu’ Volkmer-Ribeiro et al. 1972, being the parental species. However, the constancy and uniformity of the characteristics presented by all specimens do not support the hypothesis of origin from an hybrid swarm and allow grouping such characteristics under the term ‘specific’. This fact, together with the present lack of studies on genetics of freshwater sponges, necessitated the erection of the new genus Saturnospongilla and the description of the new species S.carvalhoi n.sp. The complexity of the spicular set of this new genus facilitates generalization of the hypothesis of a hybrid origin of the other presently known monotipic genera of freshwater sponges which also display a ‘multiple’ spicular composition. Reproduction of these hybrid sponges is in agreement with the presence of gemmules in all such monotypic genera. The hypothesis is also advanced that such sponges may be allopolyploid hybrids.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - biophysique moleculaire
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
A2E26EE54737DC4369298DEF89CDE65AD2B01ED5
Revue

Hydrobiologia

Année de publication
1976
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.136
Sous-corpus
  • Eponges
Type de publication
Journal
ark:/67375/1BB-389X3GMX-8
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