Evidence of pre-zygotic barriers in attempts to cross-breed Penaeus ( Litopenaeus) vannamei (Boone) and P. ( Litopenaeus) stylirostris (Stimpson) by means of artificial insemination
The feasibility of cross-breeding of Pacific white shrimp, P. ( Litopenaeus) vannamei (PV) and blue shrimp, P. ( Litopenaeus) stylirostris (PS), by means of artificial insemination, was evaluated. Intra-specific (pure species) crosses were used as control treatments: 1) ♂PV × ♀PV and 2) ♂PS × ♀PS. R...
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Published in | Aquaculture Vol. 304; no. 1; pp. 100 - 103 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
15.06.2010
Elsevier Elsevier Sequoia S.A |
Subjects | |
Online Access | Get full text |
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Summary: | The feasibility of cross-breeding of Pacific white shrimp,
P. (
Litopenaeus)
vannamei (PV) and blue shrimp,
P. (
Litopenaeus)
stylirostris (PS), by means of artificial insemination, was evaluated. Intra-specific (pure species) crosses were used as control treatments: 1) ♂PV
×
♀PV and 2) ♂PS
×
♀PS. Reciprocal, inter-specific (hybrid) crosses 3) ♂PV
×
♀PS and 4) ♂PS
×
♀PV, were performed employing a variety of artificial insemination techniques. Twelve intra-specific inseminations of white shrimp (♂PV
×
♀PV) were performed. All inseminated females spawned eggs, ranging from 70,111 to 139,940 eggs per spawn. Five out of the 12 spawns produced nauplii (14,241 nauplii per spawn), with a mean hatch rate of 11.7%. For intra-specific blue shrimp crosses (♂PS
×
♀PS), 13 out of 14 inseminated females spawned eggs ranging from 112,349 to 282,141 eggs per spawn, and obtaining three fertile spawns with a mean hatch rate of 12.8% and 24,588 nauplii per spawn. For the inter-specific crosses, a total of 49 hybridization attempts were made, 27 for the cross ♂PV
×
♀PS and 22 for the reciprocal cross ♂PS
×
♀PV. In spite of trying artificial insemination in various ways, none of the hybridization attempts was successful; indicating that cross-breeding of white and blue shrimp is not possible by means of traditional artificial insemination techniques. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0044-8486 1873-5622 |
DOI: | 10.1016/j.aquaculture.2010.03.021 |