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Reproduction of Panulirus Longipes Longipes in Calatagan, Batangas, Philippines
Reproduction of Panulirus Longipes Longipes in Calatagan, Batangas, Philippines
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Reproduction of Panulirus Longipes Longipes in Calatagan, Batangas, Philippines
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Reproduction of Panulirus Longipes Longipes in Calatagan, Batangas, Philippines
Reproduction of Panulirus Longipes Longipes in Calatagan, Batangas, Philippines
Journal Article

Reproduction of Panulirus Longipes Longipes in Calatagan, Batangas, Philippines

1994
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Overview
Histological analysis confirmed the resemblance of the ovarian structure and development of Panulirus longipes longipes to those of other palinurid species. The low incidence of inactive ovaries and the presence of developing ovaries at any time of the year indicate that this species breeds year round in Calatagan, Batangas, Philippines. Continuous breeding of the population is further ascertained by the incidence of egg-bearing females in the landed catch during practically all months from July 1982 to June 1984. Furthermore, the incidence of developing and redeveloping ovaries in egg-bearing females (44.0-81.2 mm CL) suggests that individuals can produce at least 2 broods in rapid succession particularly during the warmer months of March to May. The smallest females with eggs and mature ovaries were 41.8 and 41.4 mm CL size, respectively. The disproportionate increase in the growth of the third walking leg of the males relative to the females indicate that males reach first functional sexual maturity between 55.0-60.0 mm CL. The relationship between the total number of eggs (E) carried and the size of the female (CL) is expressed by the relationship: E = -291063 + 7387 CL over the size range 43.0-85.4 mm CL. Over this size range, the reproductive potential of P. longipes longipes is higher than that of closely related species belonging to the P. japonicus group. /// L'analyse histologique a confirmé la ressemblance de la structure de l'ovaire et du développement de Panulirus longipes longipes avec ceux des autres espèces de palinurides. La faible fréquence d'ovaires inactifs et la présence d'ovaires en cours de développement à tout moment de l'année indiquent que cette espèce se reproduit toute l'année à Calatagan, Batangas, Philippines. La reproduction en continu de la population est confirmée par la fréquence de femelles ovigères dans les prises débarquées pendant pratiquement tous les mois de juillet 1982 à juin 1984. De plus, la fréquence des ovaires en développement ou redéveloppement chez les femelles ovigères (44,0 à 81,2 mm CL) suggère que les individus peuvent produire au moins 2 pontes en succession rapide en particulier au cours des mois les plus chauds de mars à mai. Les plus petites femelles avec oeufs et ovaires à maturité mesuraient 41,8 et 41,4 mm CL, respectivement. La croissance disproportionée de la troisième patte ambulatoire des mâles comparée à celle des femelles indique que les mâles atteignent les premiers la maturité sexuelle fonctionnelle entre 55,0 et 60,0 mm CL. La relation entre le nombre d'oeufs (E) et la taille de la femelle (CL) est exprimée par: E = -291063 + 7387 CL pour la classe de taille 43,0-85,4 mm CL. Dans cette classe de taille, le potentiel reproductif de P. longipes longipes est supérieur à celui d'espèces proches appartenant au groupe P. japonicus.
Publisher
Brill,BRILL,E. J. Brill