MCZ Mammalogy 68820

Cavia porcellus (Linnaeus, 1758) x Cavia rufescens

Date Collected:

1903-07-01/1908-12-31

North America: United States: Massachusetts | Harvard University, Museum of Comparative Zoology in Cambridge or Bussey Institute in Boston

occurrenceID: https://mczbase.mcz.harvard.edu/guid/MCZ:Mamm:68820 JSON-LD

Current Identification
Cavia porcellus x Cavia rufescens
Animalia Chordata Mammalia Rodentia Caviidae
Common Name(s): Domesticated Guinea Pig
Determiner: [no agent data]
Nature of ID: revised taxonomy
Remarks: originally ID'ed as C. aperea x C. porcellus, but Castle noted in his publications that the wild progenitors were later referred to C. rufescens; see Detlefsen 1914 preface, and Castle & Wright 1916
Cavia apera x Cavia porcellus
Animalia Chordata Mammalia Rodentia Caviidae
Common Name(s): Domesticated Guinea Pig
Determiner: [no agent data]
Nature of ID: migration
Remarks: original tags/labels

Detlefsen 1914, page 36, Other Useful Citation of Cavia Pallas, 1766 doi: 10.5962/bhl.title.56386 linked data icon
publication discusses crosses produced from wild male C. rufescens and albino domestic female C. porcellus. Specimen is a result of these crosses. See also table 44 (p. 116)

  • original number: ♀A7

Part Condition Disposition Count
skin (dry) edges of mouth ragged; hole near nose. Repaired tear in L muzzle. Tear near L elbow. Some small holes around ventral suture. Overall good in collection 1 History

Attribute Value Determination On
sex female [no agent data]
age class neonate [no agent data]
Remarks: "died at birth"
unformatted measurements coat notes: wild-type agouti like father ♂A1; heterozygous for albinism (Cc); heterozygous for rough-coated (Rfrf), showing dorsal ridge of reversed hairs By: John A. Detlefsen
Remarks: see Detlefsen 1914, table 44 & table 57
weight 61 g [no agent data]

  • one of two hybrid Cavia neonates found uncataloged in collection, Jan 2025. Part of W. E. Castle & J. A. Detlefsen's heredity work; see Detlefsen 1914.

  • None

  • Continent:
  • North America
  • Country:
  • United States
  • State/Province:
  • Massachusetts
  • dwc:highergeographyID:
  • http://vocab.getty.edu/tgn/7007517 linked data icon
Specimens with same Higher Geography
Specimens from the same Locality
Specimens from the same Collecting Event
  • Specific Locality:
  • Harvard University, Museum of Comparative Zoology in Cambridge or Bussey Institute in Boston
  • Verbatim Locality:
  • Harvard University, Museum of Comparative Zoology in Cambridge or Bussey Institute in Boston
  • Collecting Source:
  • lab colony/lab reared
  • Began Date / Ended Date:
  • 1903-07-01 / 1908-12-31
  • Verbatim Date:
  • [no verbatim date data]
  • Collecting Event Remarks:
  • F1 hybrid cross between wild caught C. rufescens ♂A1 (aka ♂1) and albino Abyssinian domestic C. porcellus ♀1125. Died at birth--date not noted, but range based on father ♂A1's time spent in captivity (imported July 1903; died in captivity 1908).
  • Collectors:
  • William E. Castle; John A. Detlefsen

  • None

  • None

  • [Masked]

  • None
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