tallas y fecundidad de juxtafabia muliniarum (brachyura: pinnotheridae) asociado con saccostrea palmula (bivalvia: ostreidae), costa rica
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ID: 148894
2001
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Abstract
Se determinaron las tallas, frecuencia de infección y fecundidad de Juxtafabia muliniarum de la cavidad paleal de Saccostrea palmula de mayo de 1998 a mayo de 1999, la frecuencia de infestación fue de un 18.52 % en una muestra de 540 ostras. De los 136 cangrejos, el 36 % fueron parejas, el 60 % hembras solas y el 4 % machos solos. El promedio de la longitud del caparazón fue de 5.6 + 0.74 mm (ámbito entre 4.0 y 7.6 mm) para hembras y 2.71 + 0.60 mm (ámbito entre 1.6 y 4.0 mm) para machos. El peso promedio fue de 0.180 + 0.084 g (ámbito entre 0.06 y 0.4 g) para hembras y 0.011 + 0.003 g (ámbito entre 0.01 y 0.02 g) para machos. La fecundidad de J. muliniarum se rigió por la ecuación F = 3904.6 Ln (Lc) -4651.1. En todos los meses se encontraron hembras ovígeras. La relación longitud del caparazón-peso total para machos y hembras se rigió porla ecuación Pt = 6 X 10-4 Lc3.2122. La proporción sexual fue de 1.0 macho: 2.04 hembras. Se registra a S. palmula como huésped de J. muliniarum
Size and fecundity observations of pea crab (Juxtafabia muliniarum) from the paleal cavity of!he oyster Saccostrea palmula were made from May 1998 to May 1999. Infestation frequency was 18.52 % in a sample of 540 oysters. Of 136 pea crabs, 36 % were couples, 60 % were single females and 4 % were single males. The mean caparace length of J. muliniarum was 5.6 + 0.74 mm (range 4.0 to 7.6 mm) for females and 2.7 + 0.60 mm (range 1.6 to 4.0 mm) for males. The mean weight was 0.180 + 0.084 g (range 0.06 to 0.4g) for females and 0.011 + 0.003 g (range 0.01 to 0.02 g) for males. Ovigerous females (43.75 % of all females) were found in all months. The caparace length - fecundity relationship was F = 3904.6 Ln (Lc) -4651.1. The caparace length-weight relationship was P = 6 X 10-4 Lc3.2122. The mean sex-ratio was 1.0 male: 2.4 females. Saccostrea palmula infected only by females was the dominant group (60.78 %). This mollusk is a new host record for the crab
Size and fecundity observations of pea crab (Juxtafabia muliniarum) from the paleal cavity of!he oyster Saccostrea palmula were made from May 1998 to May 1999. Infestation frequency was 18.52 % in a sample of 540 oysters. Of 136 pea crabs, 36 % were couples, 60 % were single females and 4 % were single males. The mean caparace length of J. muliniarum was 5.6 + 0.74 mm (range 4.0 to 7.6 mm) for females and 2.7 + 0.60 mm (range 1.6 to 4.0 mm) for males. The mean weight was 0.180 + 0.084 g (range 0.06 to 0.4g) for females and 0.011 + 0.003 g (range 0.01 to 0.02 g) for males. Ovigerous females (43.75 % of all females) were found in all months. The caparace length - fecundity relationship was F = 3904.6 Ln (Lc) -4651.1. The caparace length-weight relationship was P = 6 X 10-4 Lc3.2122. The mean sex-ratio was 1.0 male: 2.4 females. Saccostrea palmula infected only by females was the dominant group (60.78 %). This mollusk is a new host record for the crab
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| Authors | ;Jorge Cabrera Peña;Maurizio Protti Quesada;Mario Urriola Hernández;Osvaldo Sáenz Vargas;Rebeca Alfaro Hidalgo |
| Journal | science journal of university of zakho |
| Year | 2001 |
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