Pattern of hemipenis use in the male lizard Anolis sagrei after unilateral castration

Richard Tokarz

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This study investigated whether sensory feedback from the testis and sperm duct determines the pattern of hemipenis use in male A. sagrei. Males were unilaterally castrated and observed in copulations that began 2 wk after surgery. Independent of whether the left or right testis had been removed, unilaterally castrated males showed no significant difference in the frequency of use of either the left or right hemipenis in either of two copulations separated by 1–3 h or in a series of 16 copulations over 16 days. Thus, males did not preferentially use the hemipenis leading to the intact testis. Moreover, unilaterally castrated males showed significant alternation in the use of the hemipenes, not only in the two successive copulations, but also in the series of 16 copulations. The mass of the sperm ducts differed significantly after the last of the copulations. The mass of ducts that led to a testis was significantly greater than that of ducts not leading to a testis. These findings suggest that the pattern of alternation of hemipenis use in male A. sagrei is not determined by sensory input from either the testis or the sperm duct.

Original languageEnglish (US)
Pages (from-to)93-99
Number of pages7
JournalJournal of Experimental Zoology
Volume250
Issue number1
DOIs
StatePublished - 1989

Fingerprint

Copulation
Anolis
Lizards
Castration
castration
copulation
lizards
Testis
testes
Spermatozoa
spermatozoa
Sensory Feedback
surgery

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

Pattern of hemipenis use in the male lizard Anolis sagrei after unilateral castration. / Tokarz, Richard.

In: Journal of Experimental Zoology, Vol. 250, No. 1, 1989, p. 93-99.

Research output: Contribution to journalArticle

@article{14d36ba6ab0545af8c786a4b68a9ed5f,
title = "Pattern of hemipenis use in the male lizard Anolis sagrei after unilateral castration",
abstract = "This study investigated whether sensory feedback from the testis and sperm duct determines the pattern of hemipenis use in male A. sagrei. Males were unilaterally castrated and observed in copulations that began 2 wk after surgery. Independent of whether the left or right testis had been removed, unilaterally castrated males showed no significant difference in the frequency of use of either the left or right hemipenis in either of two copulations separated by 1–3 h or in a series of 16 copulations over 16 days. Thus, males did not preferentially use the hemipenis leading to the intact testis. Moreover, unilaterally castrated males showed significant alternation in the use of the hemipenes, not only in the two successive copulations, but also in the series of 16 copulations. The mass of the sperm ducts differed significantly after the last of the copulations. The mass of ducts that led to a testis was significantly greater than that of ducts not leading to a testis. These findings suggest that the pattern of alternation of hemipenis use in male A. sagrei is not determined by sensory input from either the testis or the sperm duct.",
author = "Richard Tokarz",
year = "1989",
doi = "10.1002/jez.1402500113",
language = "English (US)",
volume = "250",
pages = "93--99",
journal = "Journal of Experimental Zoology Part A: Comparative Experimental Biology",
issn = "0022-104X",
publisher = "John Wiley and Sons Inc.",
number = "1",

}

TY - JOUR

T1 - Pattern of hemipenis use in the male lizard Anolis sagrei after unilateral castration

AU - Tokarz, Richard

PY - 1989

Y1 - 1989

N2 - This study investigated whether sensory feedback from the testis and sperm duct determines the pattern of hemipenis use in male A. sagrei. Males were unilaterally castrated and observed in copulations that began 2 wk after surgery. Independent of whether the left or right testis had been removed, unilaterally castrated males showed no significant difference in the frequency of use of either the left or right hemipenis in either of two copulations separated by 1–3 h or in a series of 16 copulations over 16 days. Thus, males did not preferentially use the hemipenis leading to the intact testis. Moreover, unilaterally castrated males showed significant alternation in the use of the hemipenes, not only in the two successive copulations, but also in the series of 16 copulations. The mass of the sperm ducts differed significantly after the last of the copulations. The mass of ducts that led to a testis was significantly greater than that of ducts not leading to a testis. These findings suggest that the pattern of alternation of hemipenis use in male A. sagrei is not determined by sensory input from either the testis or the sperm duct.

AB - This study investigated whether sensory feedback from the testis and sperm duct determines the pattern of hemipenis use in male A. sagrei. Males were unilaterally castrated and observed in copulations that began 2 wk after surgery. Independent of whether the left or right testis had been removed, unilaterally castrated males showed no significant difference in the frequency of use of either the left or right hemipenis in either of two copulations separated by 1–3 h or in a series of 16 copulations over 16 days. Thus, males did not preferentially use the hemipenis leading to the intact testis. Moreover, unilaterally castrated males showed significant alternation in the use of the hemipenes, not only in the two successive copulations, but also in the series of 16 copulations. The mass of the sperm ducts differed significantly after the last of the copulations. The mass of ducts that led to a testis was significantly greater than that of ducts not leading to a testis. These findings suggest that the pattern of alternation of hemipenis use in male A. sagrei is not determined by sensory input from either the testis or the sperm duct.

UR - http://www.scopus.com/inward/record.url?scp=84912859593&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84912859593&partnerID=8YFLogxK

U2 - 10.1002/jez.1402500113

DO - 10.1002/jez.1402500113

M3 - Article

VL - 250

SP - 93

EP - 99

JO - Journal of Experimental Zoology Part A: Comparative Experimental Biology

JF - Journal of Experimental Zoology Part A: Comparative Experimental Biology

SN - 0022-104X

IS - 1

ER -