The Status of Virginia\u27s Public Oyster Fishery 1994

This report summarizes data collected during 1994 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia

The Status of Virginia\u27s Public Oyster Resource 1993

This report summarizes data collected during 1993 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia

The Status of Virginia\u27s Public Oyster Fishery 1994

This report summarizes data collected during 1994 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia

The Status of Virginia\u27s Public Oyster Resource 1997

This report summarizes data collected during 1997 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia

The Status of Virginia's Public Oyster Resource 1996

This report summarizes data collected during 1996 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia

The Status of Virginia's Public Oyster Fishery 1995

This report summarizes data collected during 1995 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia

The Status of Virginia's Public Oyster Resource 1997

This report summarizes data collected during 1997 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia

The Status of Virginia's Public Oyster Fishery 1994

This report summarizes data collected during 1994 in the Virginia portion of the Chesapeake Bay. The report is composed of two parts, part one, oyster recruitment (shell string) in Virginia and part two, dredge survey of selected oyster bars in Virginia

Medición Testicular en Sementales de Raza Caballo Chileno Enteros y Castrados Unilateralmente

The aim of this study was to determine the testicular size and to estimate the daily sperm production (DSP) in entire and unilaterally castrated males of the Chilean Horse breed. Sixty one (31 entire and 30 unilaterally castrated) stallions, with ages between 3 and 20 years of age were studied. A scrotal caliper was used to measure height, width and length of testicles. Testicular volume (TV) was calculated and DSP was estimated using formulae proposed by Sertich (2011).  Testicular measures in entire stallions were larger than expected and without statistical difference between testicles. The estimated DSP in entire stallions was 7.67 ± 2.32 x 109 spermatozoa. There were no differences in size related to the remaining testicle in unilaterally castrated stallions, but height, width and TV were larger than in entire stallions (p<0.05). DSP in unilaterally castrated stallions was 5.13 ± 1.84 x 109 spermatozoa, and it was a 33% lower compared to entire males (p<0.0001). Results obtained allow concluding that testicular measures in Chilean Horse stallions are larger than expected for their body size.El objetivo del presente estudio fue establecer el tamaño testicular y estimar la producción espermática diaria (PED) en sementales de raza Caballo Chileno enteros y castrados unilateralmente. Se estudiaron 61 sementales (31 con ambos testículos y 30 castrados unilateralmente), de 3 a 20 años de edad. Se midió el alto, ancho y largo de los testículos con un vernier escrotal, se calculó el volumen testicular (VT) y se estimó la PED utilizando las fórmulas propuestas por Sertich (2011). Las medidas testiculares en los sementales con ambos testículos fueron mayores a las esperadas y sin diferencia estadística entre testículos contralaterales en sementales enteros. La PED estimada en sementales con ambos testículos fue de 7.67 ± 2.32 x 109 espermatozoides. En los sementales castrados unilateralmente no hubo diferencias de tamaño relacionadas con el testículo que mantenían, pero el alto, ancho y VT fueron mayores que en los sementales enteros (p<0.05). La PED estimada en sementales castrados unilateralmente fue de 5.13 ± 1.84 x 109 espermatozoides, lo cual es 33% menor que en caballos enteros (p<0.0001). Los resultados permiten concluir que las medidas testiculares de los sementales de raza Caballo Chileno son mayores a las esperadas para su tamaño corporal