Ethological Differences and the Probability of Introgressive Hybridization Between Two Species of the Ninespine Stickleback, Pungitius Pungitius and Pungitius Platygaster, in Eurasia

Behaviour ◽  
1985 ◽  
Vol 93 (1-4) ◽  
pp. 169
Author(s):  
V.V. Ziuganov
Keyword(s):  
Introgressive Hybridization ◽  
Pungitius Pungitius ◽  
Ninespine Stickleback

The cestode parasite Schistocephalus pungitii: castrator or nutrient thief of ninespine stickleback fish?

Parasitology ◽  
2017 ◽  
Vol 144 (6) ◽  
pp. 834-840 ◽  
Author(s):  
DAVID C. HEINS
Keyword(s):  
Threespine Stickleback ◽  
Reproductive Capacity ◽  
Pungitius Pungitius ◽  
Cestode Parasite ◽  
Ninespine Stickleback ◽  
Dog Bone ◽  
Infected Adult ◽  
Parasite Relationship ◽  
Negative Effect ◽  
Relationship Of

SUMMARYIn this investigation, the host–parasite relationship of ninespine stickleback fish Pungitius pungitius and the cestode parasite Schistocephalus pungitii was studied using samples from Dog Bone Lake, Kenai Peninsula, Alaska, to test the hypothesis that S. pungitii is a castrator of ninespine stickleback. Infected, adult females of all sizes (ages) were capable of producing clutches of eggs. S. pungitii had a negative effect on the ability of host females to produce a clutch, which was related to increasing parasite:host mass ratio (parasite index, PI). Among infected females with egg clutches, both clutch size and egg size were reduced; and the reduction increased with greater PI. The results of this study are consistent with the hypothesis that S. pungitii causes host sterility as a result of simple nutrient theft and is not a true castrator as hypothesized in earlier reports. The degree of parasite-induced sterility appears to vary among populations of the ninespine stickleback, perhaps reflecting differences in resource availability. Populations of ninespine stickleback appear to show a greater reduction in host reproductive capacity with PI than populations of the threespine stickleback infected by Schistocephalus solidus, possibly owing, in part, to the length-adjusted somatic mass of the threespine stickleback being greater.

Heteromorphic sex chromosomes in the ninespine stickleback Pungitius pungitius

2008 ◽  
Vol 73 (2) ◽  
pp. 456-462 ◽  
Author(s):  
K. Ocalewicz ◽  
D. Fopp-Bayat ◽  
P. Woznicki ◽  
M. Jankun
Keyword(s):  
Sex Chromosomes ◽  
Pungitius Pungitius ◽  
Ninespine Stickleback ◽  
Heteromorphic Sex Chromosomes

The adaptive significance of dorsal spine variation in the fourspine stickleback, Apeltes quadracus. V. Temporal variation

1987 ◽  
Vol 65 (11) ◽  
pp. 2651-2657 ◽  
Author(s):  
D. M. Blouw ◽  
D. W. Hagen
Keyword(s):  
Temporal Variation ◽  
Geographic Variation ◽  
Local Equilibrium ◽  
Adaptive Significance ◽  
Pungitius Pungitius ◽  
Maritime Provinces ◽  
Ninespine Stickleback ◽  
Apeltes Quadracus ◽  
Fourspine Stickleback ◽  
Spine Number

We investigated temporal variation in polymorphisms for the number of dorsal spines in the fourspine stickleback, Apeltes quadracus, and in the ninespine stickleback, Pungitius pungitius, to complement studies based on geographic variation. The changes in spine number that occurred over a 10-year period at Daigle Inlet, New Brunswick, are small relative to geographic variation among sites in the Maritime Provinces. However, some statistically significant changes occur in both species: they take place at or near reproduction; there is no evidence that they are related to selection by predators or any other environmental factor that we measured; and they tend to be followed by reversals that damp the net change. Contrary to expectation, based on spatial relationships, spine numbers in A. quadracus and P. pungitius do not covary predictably over time. The results show that events at or near reproduction play a role in determining local morph frequencies. Our main finding is that spine number is surprisingly stable for both species, and we conclude that it is constrained to local equilibrium values.

Acanthocephalan Parasites of Slimy Sculpin, Cottus cognatus, and Ninespine Stickleback, Pungitius pungitius, from Lake Michigan, U.S.A

2012 ◽  
Vol 79 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Patrick M. Muzzall ◽  
Michael Lima ◽  
Alex Gentile ◽  
Jacob Gunn ◽  
Amanda Jones ◽  
...  
Keyword(s):  
Lake Michigan ◽  
Pungitius Pungitius ◽  
Cottus Cognatus ◽  
Ninespine Stickleback ◽  
Slimy Sculpin
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