The effect of isolation on the life-history traits of Pseudosuccinea columella (Pulmonata: Lymnaeidae)
Mem. Inst. Oswaldo Cruz
;
96(4): 577-581, May 2001. tab, graf
Article
Dans Anglais
| LILACS
| ID: lil-285565
RESUMO
A population of Pseudosuccinea columella was raised under laboratory conditions and its life tables were determined in isolated and paired snails. Isolated snails were significantly larger in shell size than paired snails from five weeks of age onward. Also, statistically significant differences were found for the number of eggs per mass per individual from week 5 to 9, isolated snails exhibiting the highest values. The intrinsic and finite rates of increase were greater in isolated than in paired snails. Either an inhibition of the reproductive output between individuals or the advantage of selfing may be the cause of the differences in this species, acting as a possible mechanism that increase the fitness of isolated snails
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Isolement social
/
Lymnea
Type d'étude:
Étude pronostique
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
Mem. Inst. Oswaldo Cruz
Thème du journal:
Médecine tropicale
/
Parasitologie
Année:
2001
Type:
Article
Pays d'affiliation:
Cuba
Institution/Pays d'affiliation:
Instituto 'Pedro Kourí/CU
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