The first record of the decapod, Pontonia pinnophylax, in Pinna nobilis from the southern Adriatic (Croatia) (Decapoda, Natantia)
2009; Brill; Volume: 82; Issue: 11 Linguagem: Inglês
10.1163/001121609x12475745628469
ISSN1568-5403
Autores Tópico(s)Marine Bivalve and Aquaculture Studies
Resumo[While collecting Foraminifera shells from the bottom substrate around Peljesac Peninsula (southern Adriatic), the presence of Pontonia pinnophylax (Otto, 1821) in mussels, Pinna nobilis Linnaeus, 1758, living in Posidonia oceanica (L.) Delile sea grass meadows, was recorded. According to available data, it was obvious that detailed investigations of that species had never been made for the southern Adriatic. Ten samples of Pinna nobilis were obtained and only four specimens from the P. nobilis population were removed for investigation, from which eight individuals of Pontonia pinnophylax were isolated. The numbers and positions of the individuals were recorded. All of these were associated with their Pinna host in pairs, so the sex-ratio was 50% males and 50% females. Morphological study identified the left chela as the major chela in male shrimps. The largest host had the largest individuals of commensal shrimp. Total length appeared to be larger in male shrimps than in females. Lors de prelevements de tests de Foraminiferes du fond autour de la peninsule de Peljesac (sud de l'Adriatique), la presence de Pontonia pinnophylax (Otto, 1821) a ete observee dans les coquilles de Pinna nobilis Linnaeus, 1758 vivant dans les herbiers a posidonies Posidonia oceanica (L.) Delile. Selon les donnees disponibles, il est manifeste que des recherches detaillees concernant cette espece n'avaient jamais ete menees dans le sud de l'Adriatique. Dix echantillons de Pinna nobilis ont ete obtenus et seuls quatre specimens de la population de P. nobilis ont ete retenus, desquels huit individus de Pontonia pinnophylax ont ete isoles. Le nombre et la position des individus ont ete notes. Tous etaient associes par paires a leur hote Pinna, d'ou la sex-ratio de 50% de mâles et 50% de femelles. L'etude morphologique a permis d'identifier la pince gauche comme la pince majeure chez les crevettes mâles. L'hote de plus grande taille renfermait les individus de la crevette commensale les plus grands. La longueur totale est apparue plus grande chez les crevettes mâles que chez les femelles., While collecting Foraminifera shells from the bottom substrate around Peljesac Peninsula (southern Adriatic), the presence of Pontonia pinnophylax (Otto, 1821) in mussels, Pinna nobilis Linnaeus, 1758, living in Posidonia oceanica (L.) Delile sea grass meadows, was recorded. According to available data, it was obvious that detailed investigations of that species had never been made for the southern Adriatic. Ten samples of Pinna nobilis were obtained and only four specimens from the P. nobilis population were removed for investigation, from which eight individuals of Pontonia pinnophylax were isolated. The numbers and positions of the individuals were recorded. All of these were associated with their Pinna host in pairs, so the sex-ratio was 50% males and 50% females. Morphological study identified the left chela as the major chela in male shrimps. The largest host had the largest individuals of commensal shrimp. Total length appeared to be larger in male shrimps than in females. Lors de prelevements de tests de Foraminiferes du fond autour de la peninsule de Peljesac (sud de l'Adriatique), la presence de Pontonia pinnophylax (Otto, 1821) a ete observee dans les coquilles de Pinna nobilis Linnaeus, 1758 vivant dans les herbiers a posidonies Posidonia oceanica (L.) Delile. Selon les donnees disponibles, il est manifeste que des recherches detaillees concernant cette espece n'avaient jamais ete menees dans le sud de l'Adriatique. Dix echantillons de Pinna nobilis ont ete obtenus et seuls quatre specimens de la population de P. nobilis ont ete retenus, desquels huit individus de Pontonia pinnophylax ont ete isoles. Le nombre et la position des individus ont ete notes. Tous etaient associes par paires a leur hote Pinna, d'ou la sex-ratio de 50% de mâles et 50% de femelles. L'etude morphologique a permis d'identifier la pince gauche comme la pince majeure chez les crevettes mâles. L'hote de plus grande taille renfermait les individus de la crevette commensale les plus grands. La longueur totale est apparue plus grande chez les crevettes mâles que chez les femelles.]
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