ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Gonadal structure and population characteristics of the protogynous goby Coryphopterus glaucofraenum (1992)
    Springer
    Marine biology 113 (1992), S. 1-9 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Protogynous hermaphroditism has been reported in two gobiid species within the genus Coryphopterus, including C. nicholsi from the temperate northeastern Pacific and C. personatus from the Caribbean. In a third species from the Caribbean, C. glaucofraenum, experimental groups were established and gonad structure of experimental individuals (collected off the southwest coast of Puerto Rico between February 1985 and June 1987) was subsequently examined histologically to determine the sexual pattern. Protogyny was confirmed in C. glaucofraenum. Sex change was either initiated or completed, typically by the largest female, in all-female groups held for 10 to 40 d. Ovarian, transitional, and testis structure were similar to that of C. nicholsi and C. personatus. No preformed testicular tissue was evident in the ovary proper and ovarian features were not retained in the sex-changed testis beyond the newly transformed stage. Secretory accessory gonadal structures associated with the testis and which develop at the time of sex change arose from precursive tissue masses associated with the ventral portion of the ovarian wall in the region of the common genital sinus. The rapid development and onset of function in these structures, generally preceding that of the associated developing testis, suggest that they may play an important role in sex change events and in advertising new male status. Based on observed similarities of ovarian, transitional and secondary testis structure in three protogynous Coryphopterus species, including one species isolated since the last closing of the American landbridge, it is probable that protogyny is an ancestral condition in this genus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00367632
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Male courting behaviour in the fathead minnow, Pimephales promelas (1987)
    Springer
    Environmental biology of fishes 18 (1987), S. 235-239 
    Details
    ISSN: 1573-5133
    Keywords: Courtship ; Fathead minnow ; Pimephales promelas ; Reproductive behaviour ; Cyprinidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopis Reproductively developed male fathead minnows, Pimephales promelas, exhibited courtship behaviour in the presence of female conspecifies under laboratory conditions. Male courtship consisted of several distinctive and visually conspicuous behaviours directed toward females, including approach, display, and two contact behaviours, as well as leading behaviour from the female to a suitable spawning site. An ovulated condition in females was not necessary to generate male courtship behaviour; in fact, the amount of courtship exhibited by males may depend inversely on the readiness of females to spawn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00000363
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Does gonad structure reflect sexual pattern in all gobiid fishes? (1994)
    Springer
    Environmental biology of fishes 41 (1994), S. 301-309 
    Details
    ISSN: 1573-5133
    Keywords: Ontogeny ; Protogyny ; Gobiosoma ; Gobiidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis In immature and adult females of protogynous gobies, small distinctive masses of cells associated with the ovarian wall develop into testis-associated glandular structures during sex change. These precursive accessory gonadal structures, or pAGS, have been found in females of known protogynous goby species, but not among gonochoric goby species, suggesting that their presence can be used as a species-specific indicator of protogyny within the family. However, a detailed examination of a developmental series of ovaries in two gonochoric species,Gobiosoma illecebrosum andG. saucrum, revealed the presence of a gonadal feature previously thought to be restricted to protogynous gobies. Among immature females of both species, pAGS-like structures having a similar appearance and placement as functional pAGS of protogynous gobies were found. In femaleG. illecebrosum, the size of these structures among immatures progressively decreased with maturation and were absent in all but the smallest adult females. A similar pattern was evident in a small sample ofG. saucrum. Population demography based on field collections showed thatG. illecebrosum exhibits sex ratios and male and female size-frequency distributions typical of gonochores and laboratory experiments indicated that final sexual identity was unaffected by social environment during the juvenile period. Thus, the presence of pAGS in juvenile femaleG. illecebrosum is not related to an ability to change sex at that ontogenic interval. Whether the transient pAGS observed here are vestiges of an ancestral protogynous condition is unknown. Based on their presence among immatures in two gonochore gobies, however, only the presence of pAGS in adult females should be used to predict protogyny among gobies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02197851
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Does gonad structure reflect sexual pattern in all gobiid fishes? (1994)
    Springer
    Environmental biology of fishes 41 (1994), S. 301-309 
    Details
    ISSN: 1573-5133
    Keywords: Ontogeny ; Protogyny ; Gobiosoma ; Gobiidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis In immature and adult females of protogynous gobies, small distinctive masses of cells associated with the ovarian wall develop into testis-associated glandular structures during sex change. These precursive accessory gonadal structures, or pAGS, have been found in females of known protogynous goby species, but not among gonochoric goby species, suggesting that their presence can be used as a species-specific indicator of protogyny within the family. However, a detailed examination of a developmental series of ovaries in two gonochoric species,Gobiosoma illecebrosum andG. saucrum, revealed the presence of a gonadal feature previously thought to be restricted to protogynous gobies. Among immature females of both species, pAGS-like structures having a similar appearance and placement as functional pAGS of protogynous gobies were found. In femaleG. illecebrosum, the size of these structures among immatures progressively decreased with maturation and were absent in all but the smallest adult females. A similar pattern was evident in a small sample ofG. saucrum. Population demography based on field collections showed thatG. illecebrosum exhibits sex ratios and male and female size-frequency distributions typical of gonochores and laboratory experiments indicated that final sexual identity was unaffected by social environment during the juvenile period. Thus, the presence of pAGS in juvenile femaleG. illecebrosum is not related to an ability to change sex at that ontogenic interval. Whether the transient pAGS observed here are vestiges of an ancestral protogynous condition is unknown. Based on their presence among immatures in two gonochore gobies, however, only the presence of pAGS in adult females should be used to predict protogyny among gobies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00023819
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Patterns of gonad structure in hermaphroditic gobies (Teleostei Gobiidae) (1990)
    Springer
    Environmental biology of fishes 28 (1990), S. 125-142 
    Details
    ISSN: 1573-5133
    Keywords: Protogyny ; Transitional gonad ; Gobiid systematics ; Eviota ; Trimma ; Fusigobius ; Lophogobius ; Priolepis ; Gobiodon ; Paragobiodon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Hermaphroditism has been reported for a small number of gobiid fishes, but the extent of this sexual pattern within the family is not known. Gonad structure was examined in one or more species from twenty-one gobiid genera. No evidence of hermaphroditism was found in the species selected from 14 genera. Laboratory studies supported the conclusion of gonochorism for the examined species in four of them:Asterropteryx, Bathygobius, Gnatholepis, andPsilogobius. Currently, the absence of precursive testicular tissues associated with the ovary in females, in conjunction with no retained ovarian features in the testes of males, appear to be reliable indicators of a gonochoristic sexual pattern in gobiid fishes. Evidence for hermaphroditism was observed in seven genera:Eviota, Trimma, Fusigobius, Lophogobius, Priolepis, Gobiodon, andParagobiodon. Protogyny was experimentally confirmed inE. epiphanes, and the gonad structure in another nine of ten species ofEviota suggested either protogyny or protogynous tendencies. With the exception ofGobiodon andParagobiodon, which exhibited similar gonadal structure, ovarian and testicular structure varied considerably among the hermaphroditic genera examined, both with regard to the configuration and to the degree of development of ovarian and testicular tissues, or testicular tissue precursors. Findings of this study indicate that hermaphroditic gonad structure will prove to be a useful trait in determining evolutionary relationships within the Gobiidae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00751032
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Attraction of female fathead minnows,Pimephales promelas, to chemical stimuli from breeding males (1992)
    Springer
    Journal of chemical ecology 18 (1992), S. 1269-1284 
    Details
    ISSN: 1573-1561
    Keywords: Pheromone ; fathead minnow ; Pimephales promelas ; Cyprinidae ; mate attraction ; breeding behavior ; fish behavior
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Female fathead minnows,Pimephales promelas, were attracted to water that had contained conspecific males in breeding condition. The attraction was particularly strong in the morning and occurred in both females with mature gonads and gonadally regressed females. Females were also attracted to water that had contained other females but this attraction was weaker than the attraction to breeding males and tended to occur in afternoon trials. When offered a choice, females preferred breeding male water over regressed male water or female water. Swarming behavior, in which females formed a very active group near the water inlet, occurred primarily in test locations receiving water from breeding males. Our results indicate that breeding maleP. promelas produce water-borne chemical stimuli that attract females and that females distinguish breeding male stimuli from female or regressed-male waterborne stimuli.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00980079
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    facet.materialart.
    Unknown
    Does gonad structure reflect sexual pattern in all gobiid fishes? (1994)
    Springer
    Details
    Publication Date: 1994-11-01
    Print ISSN: 0378-1909
    Electronic ISSN: 1573-5133
    Topics: Biology
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Fish on glass. The science and art of histology (2012)
    Springer
    Details
    Publication Date: 2012-02-14
    Print ISSN: 0378-1909
    Electronic ISSN: 1573-5133
    Topics: Biology
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Male courting behaviour in the fathead minnow, Pimephales promelas (1987)
    Springer
    Details
    Publication Date: 1987-03-01
    Print ISSN: 0378-1909
    Electronic ISSN: 1573-5133
    Topics: Biology
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Patterns of reproductive morphology in the genus Gobiodon (Teleostei: Gobiidae) (2011)
    Springer
    Details
    Publication Date: 2011-05-25
    Print ISSN: 0378-1909
    Electronic ISSN: 1573-5133
    Topics: Biology
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...